Статті в журналах з теми "PIER SPACING"

Compared to the scour around a single pier, the local scour process around tandem double piers is much more complicated. Based on laboratory experiments in a flume, we conducted the scour process around tandem double piers under an ice-covered flow condition. The results showed that when the pier spacing ratio L/D = 2 (where L = the pier spacing distance, and D = the pier diameter), the rear pier (the downstream one) will intensify the horseshoe vortex process behind the front pier, and the scour depth around the front pier will increase by about 10%. As the pier spacing ratio L/D increases, the scour depth around the front pier will gradually decrease. When the pier spacing ratio L/D = 5, sediment scoured around the front pier begins to deposit between these two piers. To initiate a deposition dune between piers, the pier spacing distance under an ice-covered condition is about 20% more than that under an open flow condition. The results also showed that the existence of the rear pier will lead to an increase in the length of the scour hole but a decrease in the depth of the scour hole around the front pier. The local scour around the front pier interacts with the local scour of the rear pier. The maximum scour depth of the scour hole around the rear pier increases first, then decreases and increases again afterward. When the pier spacing ratio L/D = 9, the scour depth around the rear pier is the least. With an increase in the pier spacing ratio, the influence of the local scour around the front pier on the local scour around the rear pier gradually decreases. When the pier spacing ratio L/D is more than 17, the scour around the front pier has hardly any influence on that around the rear pier. The scour depth around the rear pier is about 90% of that around the front pier.

Stable riprap size and optimized extension of the riprap layer around double and triple piers along the flow direction are studied experimentally. Results showed that the critical riprap failure area and stable riprap size around the first pier remain unchanged with increasing pier spacing. In addition, the largest stable riprap should always be placed in front of the first pier in comparison with the remaining downstream piers. However, by increasing the pier spacing, stable riprap size around the second and third pier increased and approached that around the first pier. A relationship was developed for designing stable riprap size in pier groups. Based on this relationship, different riprap sizes are suggested for different zones around the pier group. Experiments showed that the critical zone around the piers includes only a small area and the rest of the riprap extent area can be protected with smaller riprap stones.

Flow structure and channel bed deformation caused by double piers in a tandem arrangement under ice-covered flow conditions in a bent channel is more complicated than those around a single pier in a straight channel. Based on experiments in an S-shaped flume, the scouring phenomenon at double piers in a tandem arrangement under an ice cover has been conducted by varying pier spacing distance, bend apex cross section (BACS), and hydraulic parameters. Results show that, under identical hydraulic conditions, the variation trend of the scour depth in the vicinity of double piers in a tandem arrangement in a bent channel is similar to that in a straight channel. The deepest depth of scour holes at the upstream BACS is more than that at piers at the downstream BACS. At each BACS, the effect resulting from the interaction of double piers gradually decreases with the pier spacing distance. Different from the characteristics of local scour at double piers in a tandem arrangement in the straight flume, when the ratio of pier spacing distance to pier diameter (L/D) is more than 15, the horseshoe vortex generated by the front pier has negligible impact on the rear pier, and the maximum depth of scour hole at the rear pier scour hole is about 90% that of the front pier. Also, when L/D is higher than 15, the influence of the rear pier on the front one is negligible, and the scour hole depth at the front pier remains the same. However, this phenomenon occurs when the straight flume’s L/D is greater than 17.

Local scour at the piers is one of the main reasons of bridge foundation undermining. Earlier research studies focused mainly on the scour at a single bridge pier; nevertheless, modern designs of the bridges comprise wide-span and thus group of piers rather than a single pier are usually used to support the superstructure. The flow and scour pattern around group of piers is different from the case of a single pier due to the interaction effect. Reviewing the literature of local scour around bridge piers group revealed that the local scour around bridge piers group founded in cohesive soil bed was not investigated, and most of the scour studies were related to scour in cohesionless soils. The objective of the present study is to investigate the effect of the interaction between two in-line (tandem) circular bridge piers of variable spacings founded in cohesive soil on the local scour. A set of laboratory flume experiments were conducted under the clear-water scour condition to investigate this effect. This study is the first that investigates experimentally the scour around group of bridge piers in cohesive bed. It was found that the maximum scour depth at the upstream pier of the two in-line piers occurred at a spacing of two times the diameter of the pier, scour at the downstream pier was reduced due to a sheltering effect, the interference effect will be reduced for pier spacings larger than three times of the pier diameter. A recent pier scour equation was used to estimate the scour depths at the two in-line piers in cohesive soil and compare the estimated value with the measured scour depths in the laboratory. The comparison indicated that the proposed scour equation overestimates the scour depths at both the upstream and the downstream pier.

The pier scour process is normally intensified in the presence of an ice cover, which poses risks to the longevity and safety of bridges. In the present study, the impact of the densimetric Froude number, locations, and pier spacing of side-by-side piers on the local scour depth under ice-covered flow conditions were investigated based on clear water scour experiments in an S-shaped laboratory flume. The results demonstrated that the local scour at piers along the convex bank was more substantial than that along the concave bank when other factors stayed identical. The densimetric Froude number clearly has more impact on local scour at piers along the convex bank than that along the concave bank. Different from the mechanism of the pier scour in a straight channel, the scour depth around a pier along the convex bank in the S-shaped flume increases as the distance between two piers (or pier spacing) increases, while it decreases around the piers along the concave bank. Similar scour patterns were observed when the side-by-side piers were installed at different bend apex cross-sections. The maximum local scour depths at piers along the convex bank measured at different bend apex cross-sections were relatively unchanged when other influencing factors were held constant. However, the maximum scour depth around piers along the concave bank decreased as the bends increased toward downstream.

Bridge pier scouring is a significant problem in the safety estimation of bridges. This research is carried out to study the local scour around the piers of Al-Kufa bridge ,and to estimate the effect of the spacing between the piers on the depth of equilibrium scour . Dimensional analysis technique was used ,and from the collected data filed measurements ,an empirical formula was derived .I has been found that the predicated scour depth from the formula compares well with the observed values . It was found that no mutual influence on maximum scour depth occurs for spacing ratio in Al-Kufa bridge piers , and the scour depth in the middle pier is greater than the others . The study showed that the piers of Al-Kufa bridge is safe against scouring in the present time , However the scour around the piers should be main laned when the hydraulic conditions is change in the location of the bridge.

This study based on laboratory experiments for computing depth of local scour around abutment and bridge pier neighboring abutment considering the study of the effects of upstream flow conditions , pier and abutment sizes , median size of bed material and spacing between pier and abutment on the maximum scour depth and scour pattern around a pier and abutment. The study was conducted using a physical hydraulic model of pier and abutment operated under subcritical flow , clear-water condition and using uniform cohesionless sand as bed material . Three different size models of pier and abutment were used to show the effect of the size on the local scour and two different median size (d50) of sand were used in this study. Dimensional analysis techniques and statistical analysis were used to find new formulas with help of the experimental data . One of these formula was to compute the maximum scour depth at pier neighboring abutment and the other to find the maximum scour depth at abutment. There formula were derived to predict the maximum scour depth in terms of Froude number , diameter of pier and abutment , median size of sand , flow depth , flow velocity and spacing between pier and abutment.

Purpose: Due to an increase in a number of bridges being constructed, scour depth around bridge piers is gradually being recognized as one of the possible reasons for bridge failure. According to [1] about 53% of bridge failures in the US were caused due to floods and corresponding scour in the rivers. Lots of work has been carried out around the single pier but in the case of group piers, the work is very less. Hence, it becomes necessary to calculate the actual scour depth around the bridge piers considering the close location of bridges as well. Design/methodology/approach: Recognizing the need for research in this direction, an experimental study was planned and conducted in the Hydraulics Laboratory of Civil Engineering Department of National Institute of Technology Kurukshetra, India. Experiments were conducted in a standard recirculating tilting bed water flume 15 m long, 0.4 m wide, and 0.60 m deep. The orientation of more than one pier, namely Tandem pattern was employed for the work. Two pier models, 62 mm and 42 mm diameter were used for the experimental study. The mobile bed used in the experiments had an average mean size, d50 = 0.23 mm, 0.30 mm and 0.50 mm. Findings: The outcomes of the ANN function and M5 model analysis have been used to compare with experimental results. From the earlier studies, it was concluded that, when the clear spacing between the pier models was greater than 0D the scour depth around the piers increase with a rapid rate. However, in the case of modelling techniques, M5 models show higher predictive accuracy than ANN models. Research limitations/implications: It is a significant area of research. However, the present study has been a time and facility- constrained study. Therefore, there is a large scope to conduct further studies on the subject, Different pattern i.e. Side by Side; Staggered and Group of piers can be adopted for further investigations. Originality/value: Sufficient work has been done by number of researchers around the single bridge pier. But due to rapid urbanization a number of bridges constructed in close proximity to each other which affects the scour depth of each other. Modelling techniques used in hydraulic engineering are not always effective in practice. The present study discusses the effect of spacing on scouring around piers in a tandem arrangement using experimental as well as modelling techniques. To predict the scour depth of the Tandem arrangement 89 laboratory data sets have been used.

The sliding formwork, combining high efficiency and low cost, is a kind of advanced technology in the construction of sluice pier of hydropower projects. Number of jacks and elevating shelf spacing are two important parameters in the structure design of sliding formwork, the mathematical model of the relationship between manufacture costs and jack number, spacing between the elevating shelf was established using polynomial least square method, the best value of jack number and spacing between the elevating shelf were calculated by using the simulated annealing algorithm, thereby optimized the design parameters of sliding formwork structure, whilst expatiated the technology of installing, debugging, sliding and disassembly of sliding formwork, put forward the feasible methods for solving the problems that often appeared in the construction of sliding formwork, summed up the merits of sliding formwork, analyzed the technology and economical benefit of sliding formwork

The Florida Pier Analysis Program (FLPIER) was developed by the University of Florida Department of Civil Engineering in conjunction with the Florida Department of Transportation (FDOT) Structures Division. The program was developed in order to give pier designers a comprehensive model development and analysis tool to optimize pier designs. The current version is a nonlinear, static, soil-structure interaction suite of programs that run on a personal computer and include group pile effects, layered soil, pier columns and cap, high mast lighting, sound, and retaining walls. The program was designed to allow input to be specified graphically using “designer variables” such as spacing, offsets, number of columns, and so forth. Its use has reduced the time for model development and analysis from days to under an hour. The numerical modeling techniques used have been compared with experimental data and give highly accurate results leading to an improved overall design and reduced costs.

A novel steel box bridge pier with replaceable energy dissipation wall plates at the base was proposed. After moderate earthquakes, the damaged energy dissipation wall plates and constraining steel plates on the two sides could be rapidly replaced, while the entire energy-dissipated column at the base can also be replaced after rare earthquakes. In this way, the seismic capacity of the new type of steel box bridge pier could be restored after earthquakes. For the purpose of discussing the seismic performance of this novel steel box-shaped bridge pier, the pseudostatic test and numerical simulation were performed. The results showed that the failure of the specimens in the pseudostatic tests occurred predominantly in the energy dissipation zone at the base. After replacing the damaged energy-dissipated column at the base, the seismic behavior of the proposed steel bridge pier can be recovered rapidly. Axial compression ratio is an important factor influencing the seismic behavior of the novel steel box bridge pier. The strength of the energy dissipation wall plates influences the novel steel box-shaped bridge pier’s bearing capacity and deformation capacity. Spacing between the horizontal stiffening ribs had little impact on the bearing capacity and deformation capacity of the proposed steel bridge pier. The larger the thickness of the energy dissipation wall plate, the higher the bearing capacity and deformation capacity of the steel box bridge pier. Finally, an empirical equation for the design of this novel steel bridge pier under cyclic loading was proposed.

According to using status of short span concrete bridges commonly used in highway viaduct, structural finite element analysis taking account of some parameters like connection between pier and beam, pier height, transverse bearing spacing and early support differential settlements was given based on existing cracking beams of small box girders during construction and operation. Some structural optimization recommendations and construction control suggestions was proposed. The study results are constant well with the data of the survey results and the actual status of projects, which may be taken as reference for similar projects in the design and construction.

In recent years, overturning accidents at single-pier bridges have occurred frequently, resulting in significant property losses and safety accidents. Overturning accidents show that there are still many hidden dangers in the design, operation, and management of existing single-pier bridges. Therefore, this paper takes the K503 + 647.4 separated overpass of the Hegang–Dalian Expressway as the research object and carries out an onsite anti-overturning stability test of a single-column pier bridge. Through loading under various working conditions, the displacement changes of each support are measured, and the reaction changes of the supports are calculated. In the process of simulating the field test using the finite element program ANSYS, a rigid model based on ideal support and an elastic model considering beam deformation are established, and the accuracy of the elastic model is verified by comparison with the field-measured data. Furthermore, a series of parameters, such as the bridge side-span ratio, bridge span number, bearing spacing, loading position, and torsional rigidity, are varied, and finite element simulation is carried out on the basis of the elastic model. Through comparison of the results, a relationship between the parameters of the single-pier bridge and the anti-overturning ability is obtained, which provides a theoretical basis for anti-overturning design research and the effective reinforcement of single-pier bridges.

To investigate the seismic behavior of the wall pier of a covered bridge, the multi-layer shell element in OpenSEES was used to carry out the numerical analysis under a horizontal low cyclic loading in the weak axis direction. The effects of the mesh divisions of the wall pier models were evaluated and the hysteretic curves, skeleton curves, bearing and energy dissipation capacity, stiffness degradation and displacement ductility of the wall pier with different lateral loading modes were mainly researched. The results demonstrate that the discretization of layers along the thickness direction of the multi-layer shell element model has a very limited effect on the hysteretic and skeleton curves. The mesh division of the horizontal direction depends on that of the vertical, and the vertical mesh spacing shall be longer than the plastic hinge with a length of 0.5744 m. The arrangement of the loading points is critical for the seismic behavior of the wall pier. The pier suffering the force from the five points presents a relatively strong energy dissipation and larger ductility, but this layout may cause a more concentrated force at the local position. When the loading points are evenly distributed, the capacity and displacement changes sharply and the ductility diminishes. Successively, the seismic performance indexes at the local position of the wall pier tend to be more consistent with the increasing loading points. The deformation and energy dissipation capacity of the nearby position with the denser side loading points becomes larger, but this has a minor impact on the seismic performance of the position far from the points. The wall pier without the bent cap and with three bearings set is supposed to be more reasonable for the covered bridge through the overall analysis of seismic performance.

This study proposes a class of hybrid isolation systems constructed by combining Buckling Restrained Braces (BRBs) with Rubber Bearings (RBs) or Lead Rubber Bearings (LRBs) for mitigating the seismic responses in bearing-supported bridges under strong earthquakes. Firstly, two different hybrid isolation systems (RB–BRB and LRB–BRB) were preliminarily designed based on the energy-conservation concept in the case of a bridge with Y-shaped piers, which can meet all the energy demands at different seismic hazard levels. Further, seismic evaluations were conducted on the bridges with the LRB, RB–BRB, and LRB–BRB isolation systems based on the nonlinear time history analyses. The proposed hybrid isolation systems show a two-phase energy dissipation behavior, which facilitates the systems to reduce the seismic responses remarkably under different earthquake scenarios and achieve most of the performance objectives corresponding to the code-specified hazard levels. Finally, based on fragility analyses, the effects of the gap spacing and the stiffness ratio of the BRB to the pier were investigated with respect to the failure probability in the case of a bridge with LRB–BRB. It has been validated that the seismic performances of this study’s bridge can be improved considerably with the optimized gap spacing and BRB stiffness.

Abstract This study presents the results of 32 laboratory experiments on local scour at a single pile and a 1 × 4 pile group for both uniform and non-uniform sediments under clear water conditions. The present study aims to evaluate the effects of different sediment beds made up of mixtures of sand and gravel (four-bed configurations) in d 50 (1–3.5 mm) and gradation (1.4–3) ranges on scour depth for different flow discharges and flow depths. Further, the findings of the experiments are deployed to describe the effects of pile spacing and flow conditions on the local pier scour for both uniform and non-uniform bed granulometries. In addition, this study addresses the performance of some existing scour-depth predictors. Also, the corresponding results are suitable for validating the numerical models in local pier scour prediction importantly with non-uniform sediments. In summary, the results show that effects of sediment gradation dampen with increasing flow shallowness. Furthermore, the maximum scour depth at pile groups generally increases as pile spacing decreases for uniform sediments, whereas the mentioned trend was not observed for non-uniform sediments for the same flow and sediment conditions. Moreover, the experimental results revealed that bed sediment gradation is a controlling factor in the pile’s scour. Thus, the existing scour depth predictions could be highly improved by considering sediment gradation in the predictions. Finally, the conclusions drawn from this study provide crucial evidence for the protection of bridge foundations not only at the front pile but also at rear piles.

Padma Multipurpose Bridge (PMB) is one of the most important projects in the history of Bangladesh due to its regional importance, economic benefit, and primary connectivity of one-third population of the country. The bridge is 6.15km long, connecting the ends of Mawa and Janjira in Bangladesh. The entire project is challenging to construct and complex in design as it contains both four-lane highways and train tracks supported by a double-deck composite warren truss. In this study, the dynamic response of the truss due to the moving train has been analyzed using the Moving Element Method (MEM). In this process, a separate finite element model has been developed using Finite Element (FE) program to convert the double deck truss into an equivalent beam. Analysis has been conducted for a series of different load cases, converging to the most realistic case where the actual train parameters are considered. Parametric studies have been carried out to determine the dynamic responses of the bridge with varying pier spacing and speed of the train. The most optimal solution has been discussed with the effect of the vibration of the train acting on the multi-purpose Padma bridge. The bridge's dynamic amplification factor (DAF) at a design speed of below 100km/hr is found 1.05. The parametric study shows that the critical train speed for the PMB is 1400km/hr resulting in the bridge resonance with a DAF of 18. It is also evident that with the increase of pier spacing the resonance of the bridge is expected to occur at a relatively lower speed.

The reinforced concrete (RC) piers of offshore bridges inevitably experience seawater freeze–thaw cycles due to the periodic movement of tides in cold climates. The damage caused by seawater freeze–thaw cycles will reduce the durability and mechanical properties of concrete, and then affect the seismic performance of RC piers. The method of seismic performance analysis on RC piers by numerical simulation is gradually emerging because the process of the conventional experiment is relatively complicated, and the heterogeneity and degradation of concrete after seawater freeze–thaw cycles should be considered. In this study, the method of meso-element equivalent and layered modeling was used to simulate a low cyclic loading test on an RC pier after seawater freeze–thaw cycles with ABAQUS software. The numerical simulation results were compared with the experimental results; the deviation value of peak load was not more than 6%, and the deviation value of peak displacement was not more than 10%. The result of the numerical simulation matched well with the experimental results, and the influence of different parameters was analyzed through the practical method of numerical simulation. It can be determined that the peak load decreased by 11%, while the peak displacement increased by 40% after 125 seawater freeze–thaw cycles. In the same 125 freeze–thaw cycles, the peak load increased by 15% and 27% while the axial compression ratio and the longitudinal reinforcement diameter increased. As the stirrup spacing of specimens decreased, the peak load remained unchanged, but the ductility coefficient of the specimens increased by 20%.

Ha Shuang Bridge is located in Harbin city within Heilongjiang province in the east north of China. The purposes of this study are to monitor the damage in structural members of Ha Shuang prestressed concrete box girder oblique bridge before strengthening and to evaluate the dynamic performance of the bridge structure by adopting dynamic load test. Monitoring process of damage of the bridge structure shows that the web of box girder in the quarter of the second span (about 10.5m from the pier) suffers from serious shear cracks. These cracks extend from the top to lower flange of box girder. The width of cracks rang from 0.5mm to 2mm and the angle is 45 degree. There are 6 bending cracks. The spacing between these cracks rang from 20cm to 30cm and the width is 035mm. In the span No. 3 near the pier, the web of box girder appears 12 diagonal cracks have width rang from 0.1mm to 0.12 mm. The results of dynamic load test analysis show that the values of measured vertical natural frequency is w1 = 3.616Hz and horizontal natural frequency w2 = 4.492Hz less than the values of theoretical natural frequency which is 3.863Hz and 4.848Hz, indicating that the actual stiffness of the bridge structure is less than the theoretical stiffness. Therefore the dynamic working state of bridge structure is not good. Therefore the working state of bridge is not good and it need to repair and strengthening.

Horizontal bar racks used as fish protection measures at hydropower plants have rapidly gained importance in recent years. Despite the large number of installed racks in Europe, systematic investigations of the hydraulic losses and velocity fields were missing. To fill these research gaps, the hydraulic performance of horizontal bar racks was systematically investigated in a laboratory flume for a large number of rack parameters and different hydropower plant layouts. The results of the head loss assessment are published in a paper entitled Head Losses of Horizontal Bar Racks as Fish Guidance Structures, whereas the present paper focuses on the velocity fields. The measurements show that the bar shape, the horizontal approach flow angle, and the clear bar spacing have only a minor effect on the velocity fields. In contrast, bottom and top overlays might enhance the fish guidance efficiency for bottom and surface oriented fish, while the asymmetric downstream velocity field can reduce turbine efficiencies. The hydropower plant layout strongly affects the approach flow field to horizontal bar racks. For block-type hydropower plants, the installation of a dividing pier or partial opening of the spillways improves the flow field for better fish guidance.

Ships sailing in the area of a bridge are vulnerable to the influence of complex water flow, due to the complex flow pattern around the bridge pier. Ships often crash into bridge piers, leading to serious economic losses and threating personal safety. Based on the common forms of piers of skew bridges, the hydrodynamic problems encountered during ship–bridge interactions in the area of a skew bridge were studied using particle image velocimetry-based flume testing, physical model testing, and numerical simulation. The influence of the flow angle of attack of a round-ended pier on the force and center of gravity of a ship moving on both sides of a pier is discussed under various ship–bridge transverse spacings. The results show that as a ship passes through the bridge area, the bow roll moment exhibits three peak values: ‘positive’, ‘negative’, and ‘positive’, and the curve of the center of gravity position forms the shape of a ‘straw hat’. With an increase in the flow angle of attack of the pier, the negative peak value and the second positive peak value of the bow roll moment of the ship passing through the back flow side of the pier become greater than those on the upstream side. Moreover, the ship’s navigation attitude is more unstable compared to that upstream, and the ship is at risk of colliding with the pier and sweeping. The width of the restricted water area, determined by the hydrodynamic action between the ship and bridge in the skew bridge area, is the same as that determined by the critical lateral velocity. For the ship class referred to in this study, the current code can also be used in channel design, to safeguard ship and personal safety with piers with a large flow angle of attack.

Pounding may occur between the main girders under the action of strong earthquakes, so as between main girders and abutments. This causes excessive longitudinal displacement of the main girder and unseating damage to bridges. Because long bridges in mountainous areas with high intensity are easy to unseat, the authors studied the influence of restrainer piers, expansion joint spacings (EJSs), and the span on the seismic performance of long bridges. The ABAQUS finite element software was used to simulate a bridge dynamic analysis model considering the elastoplasticity of the pounding effect of the pier and the beam. By inputting El-Centro, Northbridge, and Taft seismic waves, the time-history analysis of the seismic response of long bridges was carried out. The results indicated that a reasonable number of restrainer piers, an appropriate EJS, and a span could effectively reduce the maximum relative displacement of pier-beams. This behavior will improve the seismic performance of bridge structures. Moreover, for a 24-span equal-height beam bridge, the optimum seismic effect was obtained when 3 restrainer piers, an EJS of 70 mm, and a 50 m span were used.

The integration of oscillating water column (OWC) wave energy converters into a coastal structure (breakwater, jetty, pier, etc.) or, more generally, their installation along the coast is an effective way to increase the accessibility of wave power exploitation. In this paper, a theoretical model is developed based on the linear potential flow theory and eigenfunction matching method to evaluate the hydrodynamic performance of an array of OWCs installed along a vertical straight coast. The chamber of each OWC consists of a hollow vertical circular cylinder, which is half embedded in the wall. The OWC chambers in the theoretical model may have different sizes, i.e. different values of the radius, wall thickness and submergence. At the top of each chamber, a Wells turbine is installed to extract power. The effects of the Wells turbine together with the air compressibility are taken into account as a linear power take-off system. The hydrodynamic and wave power extraction performance of the multiple coast-integrated OWCs is compared with that of a single offshore/coast-integrated OWC and of multiple offshore OWCs. More specifically, we analyse the role of the incident wave direction, chamber size (i.e. radius, wall thickness and submergence), spacing between OWCs and number of OWCs by means of the present theoretical model. It is shown that wave power extraction from the coast-integrated OWCs for a certain range of wave conditions can be significantly enhanced due to both the constructive array effect and the constructive coast effect.

Piers were important structural members between superstructure and foundation of bridge which were designed to transfer and resist the vertical loads and horizontal loads (dead load of structure, traffic loads, water pressure, ice, and wind) to the foundation. The objective of this study was to evaluate the effect of number of piers in transverse direction (horizontal distance or spacing) between piers on the static and dynamic responses for two types of bridges structure which they include continuous and simply supported bridges. Static and dynamic analysis methods were adopted to analyse the bridges structures by using CSI-bridge software. The results of static analysis for two types of bridges models (continuous and simply supported) showed that the increasing of piers numbers had significant effects on the increasing of bridge structure stiffness by decreasing the downward vertical deflection due to service loads, increasing of the resistance of prestressed loads to service loads, and increasing of compression stresses. The results of time history analysis for two types of bridges models showed that the values of natural frequency were increased when the piers numbers were increased. Traffic load frequency (vibration frequency) values were decreased with increasing of bridge piers number because of the bridge structure had more stability. It can be concluded that the values of natural frequency were more than values of traffic load frequency, indicating that the bridges structures had enough stiffness and stability.

Evaluation of reinforcement detailing with respect to the amount and spacing of transverse reinforcement, development length, and splice length based on seismic provisions for seven Pennsylvania bridges is discussed. The selection of prototype bridges as representative of the stock of all PA bridges for the study are explained. A case study of seismic evaluation of one of the bridges selected based on finite element analysis and ductility estimation is presented as representative of the approach used to evaluate all other selected bridges.

Precast segmental reinforced concrete (RC) piers have been widely used in the construction of offshore bridges to speed up construction. Offshore bridges in cold regions are inevitably affected by the seawater freeze–thaw cycles under the periodic movement of tides, which could reduce the mechanical property of RC piers. Based on the low cyclic loading test on 12 specimens with different seawater freeze–thaw cycles, axial compression ratio, diameters of longitudinal reinforcement, and stirrup spacing, the hysteresis characteristics of precast segmental RC piers were analyzed. The test results show that the peak load decreased by 11%, while the peak displacement increased by 40% after 125 seawater freeze–thaw cycles. The hysteresis curves became fuller and the residual displacement became smaller with the accumulation of freeze–thaw damage. In the same 125 freeze–thaw cycles, the peak load increased by 15% and 27% while increasing the axial compression ratio and the longitudinal reinforcement diameter. Combined with the regression analysis of the experimental results, the restoring force model of RC piers considering the seawater freeze–thaw damage and design parameters was established, and the calculation method of each characteristic point in the model was given. The deviation values of flexural capacity are not more than 6.5%, and the deviation values of peak displacement are not more than 12%. The restoring force model determined in this paper could provide a reference for seismic response analysis of offshore bridges in cold regions.

Round-ended rectangular concrete-filled steel tube (RRCFST) columns are prone to local buckling that are close to straight steel plates when used as piers of a bridge and affect its long-term use. In order to solve this problem, tie bars were used in this research to stiffen RRCFST columns. Eleven specimens with tie bars and three specimens without tie bars were tested to analyze influences of cross-sectional aspect ratio, longitudinal spacing, limb numbers and diameter of the tie bar on failure model, confined effect, bearing capacity and ductility of RRCFST stub columns. Finite element models (FEM) with different concrete constitutive models for rectangular and circle parts were established and validated to reveal the mechanism of the constrained effect of tie bars. Experimental and FEM results show that the local buckling scope was decreased and gradually moved to middle height with decreased longitudinal spacings tie bars. The addition of tie bars in RRCFST columns with large aspect ratios slightly enhanced the ultimate bearing capacity, the diameter of tie bars changing from 8 mm to 12 mm greatly enhanced displacement and energy ductility by 58.4% and 85.1%, respectively. However, more tie bars (e.g., two or three limbs) utilization could not further improve the bearing capacity and failure mode. While, the tie bars had very limited contribution to bearing capacity and ductility for RRCFST columns with small aspect ratios, because the outer steel tubes already individually provided for enough confinement on inner concrete. By considering different concrete confined models for rectangular and round-ended parts, an analytical model was proposed and validated to predict the ultimate bearing load for RRCFST stub columns with tie bars.

Cette étude s’est déroulée dans une plan- tation forestière en Amérique centrale, proche de la ville de Diriamba au Nica- ragua, où des plantations de teck sur 48,9 ha, dans une zone de reboisement de 76,5 ha, sont renouvelées depuis 2006 (2006 : 7,90 ha ; 2007 : 13,63 ha ;2008 : 11,93 ha ; 2009 : 12,87 ha ; 2010 :21,70 ha). Cette plantation sort de l’ordi- naire du fait de l’espacement de 1 x 1 m des arbres et des facteurs écologiques limitants de cette zone tropicale aride. L’espacement de 1 x 1 m a été choisi pour favoriser la croissance en hauteur et obtenir ainsi des tiges de haute taille, et pour limiter les ramifications afin d’éviter la formation de houppiers importants. Cela permet de démarrer une production de poteaux de teck, adaptés à certaines constructions, dès la première coupe d’éclaircissement. Les paramètres de croissance des tecks (hauteur, circonfé- rence) ont été mesurés dans les placettes expérimentales mises en place en 2011. Des données complémentaires (morta- lité, arbres cassés ou tordus) ont égale- ment été relevées. Une méthodologie de terrain a été développée et les résultats restitués sous forme de tableaux et gra- phiques. Une évaluation statistique des paramètres de croissance a été menée à partir des mesures prises sur les placettes expérimentales délimitées dans la planta- tion. Les jeunes arbres plantés la même année ont été comparés selon leur prove- nance en termes de hauteur, de circonfé- rence, de productivité et de mortalité. Au total, 10 955 arbres sur 143 placettes ont été mesurés. Sur ces peuplements de 1 à 5 ans d’âge, le bois sur pied total est estimé à 1 287,89 m3, la masse moyenne de bois à l’hectare à 17,89 m3, la hauteur moyenne des peuplements à 3,03 m et la circonférence moyenne à hauteur de poitrine à 2,74 cm. Les arbres cassés représentent 5,64 %, les arbres tordus 5,66 % et la mortalité moyenne s’établit à 21,48 %.

This paper presents the results of the seismic evaluation of an elevated seven-span bridge with tall piers in western Pennsylvania. The bridge was modeled using the SEISAB software, and the analysis used modal superposition method. Various modeling strategies related to piers, abutments, expansion joints, fixed joints, rocker bearings, and hanger supports were studied. Several modeling options were made to capture different behavior responses under seismic loading conditions. The force and displacement demands are compared, and an assessment is made with respect to the potential for damage based on the analysis results. The result of the study shows that for the level of earthquakes expected in the region, columns will not be overstressed. Furthermore, the analysis results show that displacements of the superstructure should not be of concern in light of the fact that there is sufficient bearing seat width and that concrete pedestals have been added in front of the bearing supports to presumably prevent the walking off of the bearing from the support. The study concludes that considering the low level of earthquakes expected in PA, the potential for collapse of the superstructure due to bearing support failure is negligible. The paper contributes to better understanding of the behavior of tall and elevated highway bridges in low seismic regions. The results of the study reinforce the view that decisions on seismic retrofit of such bridges in low seismic regions should not be based on column tie spacing.

Abstract: Hollow Concrete Columns (HCCs) are one of the preferred construction systems in civil infrastructures including bridge piers, ground piles, and utility poles to minimize the overall weight and costs. HCCs are also considered a solution to increase the strength to mass ratio of structures. However, HCCs are subjected to brittle failure behaviour by concrete crushing means that the displacement capacity and the strength after steel yielding in HCCs are decreasing due to the unconfined concrete core. Absence of the concrete core changes the inner stress formation in HCCs from triaxial to biaxial causes lower strength. A new type of Hollow Composite Reinforcing System (HCRS) has recently been designed and developed to create voids in structural members. This reinforcing system has four external flanges to facilitate mechanical bonding and interaction with concrete. Therefore, providing the inner Hollow Composite Reinforced Sections (HCRS) can significantly increase strength by providing a higher reinforcement ratio and confining the inner concrete core triaxially. The corrosion of steel is also a notable factor in the case of steel reinforced HCCs which became more critical because their outer and inner surfaces exposing more concrete surface area. An alternative reinforcement is Glass Fibre Reinforced Polymer (GFRP) bars, can overcome the brittle behaviour of steel reinforced HCC. In previous studies, HCC shows high strength capacity, when appropriate reinforcement in the form of longitudinal GFRP bars, laterally using GFRP spirals and internally using rectangular HCRS which provide enough inner confinement. However, the spirals laterally restrict the expansion of the concrete core and limit the buckling of the longitudinal bars, allowing the columns to keep resisting applied loads and gives maximum strength. Therefore, in this study, the spirals are replaced by discrete hoops as lateral reinforcement to analyse the effect on structural behaviour of HCC reinforced with rectangle shaped HCRS under axial load using ANSYS software. The results show that column laterally reinforced with spiral attained insignificant increase in strength than their counterpart specimens confined with hoops. So, the circular hoops were found to be as efficient in confining concrete as spirals in a column reinforced internally with rectangle shaped HCRS. The increase in volumetric ratio can be achieved by reducing the spacing between lateral reinforcement. So, this study also investigates the effectiveness of reducing the spiral spacing in HCC reinforced with HCRS, three models with lateral spacing of 50mm, 40mm and 30mm are modelled and analysed. The results show that columns with closer spiral spacing attained more axial stability. Keywords: Hollow Concrete Column, Rectangular Hollow Composite Reinforced Sections, GFRP Spirals, GFRP Hoops, Nonlinear Static Analysis, ANSYS.

Un cuerpo llena la inmensidad: la palabra y el espacio en la escultura de Jaume PlensaLa obra de Jaume Plensa (Barcelona, 1955) se ha caracterizado desde sus inicios por un interés hacia lo corporal y hacia lo escritural. Al comienzo, guiado por el propósito de ofrecer una representación del pensamiento como «medida» y «peso», el artista crea unas piezas voluminosas revestidas de textos para reproducir la sonoridad del ámbito inteligible. En sus últimos trabajos, las palabras se convierten en la piel de unas figuras silentes humanoides que suelen dejar ver su interior. Lo que tienen en común estas obras es que hay tras ellas un acto creador semejante al poeta que nombra las cosas por vez primera. En este caso Plensa da origen a un lugar previo a la distinción entre espacio y tiempo en el que el cuerpo y la escritura se confunden. Un «espaciamiento» al que los griegos denominaban chora y que bien podría ser la esencia de la escultura.Palabras clave: Escultura, espacio, tiempo, materia, Estética, Jaume Plensa A Body that Fills Immensity: Word and Space in the sculpture of Jaume PlensaThe work of Jaume Plensa (Barcelona, 1955) has been characterized from the beginning by an interest towards the corporeal and towards the scriptural. At first, guided by the aim of providing a representation of thought in terms of "measure" and "weight", the artist creates voluminous sculptures covered with texts with the intention of reproducing the sound of the intelligible area. In his last works, words become the skin of silent humanoid figures that often reveal its inner self. What these works have in common is that you will find in them a creative act similar to act of a poet naming things for the first time. Plensa makes for a place prior to the distinction between Space and Time. A place where body and writing merge. A «spacing» named chora by the Greeks, and that could be the essence of sculpture.Key words: Sculpture, Space, Time, Material, Aesthetics, Jaume Plensa

Pile foundations supporting bridge piers, offshore platforms, and marine structures are required to resist not only static loading but also lateral dynamic loading. The static p–y curves are widely used to relate pile deflections to nonlinear soil reactions. The p-multiplier concept is used to account for the group effect by relating the load transfer curves of a pile in a group to the load transfer curves of a single pile. Some studies have examined the validity of the p-multiplier concept for the static and cyclic loading cases. However, the concept of the p-multiplier has not yet been considered for the dynamic loading case, and hence it is undertaken in the current study. An analysis of the dynamic lateral response of pile groups is described. The proposed analysis incorporates the static p–y curve approach and the plane strain assumptions to represent the soil reactions within the framework of a Winkler model. The model accounts for the nonlinear behaviour of the soil, the energy dissipation through the soil, and the pile group effect. The model was validated by analyzing the response of pile groups subjected to lateral Statnamic loading and comparing the results with field measured values. An intensive parametric study was performed employing the proposed analysis, and the results were used to establish dynamic soil reactions for single piles and pile groups for different types of sand and clay under harmonic loading with varying frequencies applied at the pile head. "Dynamic" p-multipliers were established to relate the dynamic load transfer curves of a pile in a group to the dynamic load transfer curves for a single pile. The dynamic p-multipliers were found to vary with the spacing between piles, soil type, peak amplitude of loading, and the angle between the line connecting any two piles and the direction of loading. The study indicated the effect of pile material and geometry, pile installation method, and pile head conditions on the p-multipliers. The calculated p-multipliers compared well with p-multipliers back-calculated from full scale field tests.Key words: lateral, transient loading, nonlinear, pile–soil–pile interaction, p–y curves, Statnamic.

SISTEMA WEB DE MANEJO DA IRRIGAÇÃO – SISMI EDUARDO DE PIERI PRANDO[1]; LUIZ SERGIO VANZELA2; KARLA NASCIMENTO SENA3 E GUILHERME MORAIS4 [1]Mestre, Professor Instituto Federal de Educação Ciência e Tecnologia de São Paulo - IFSP, Votuporanga/SP, Email: eduardoprando@yahoo.com.br.2 Doutor, Universidade Camilo Castelo Branco - UNICASTELO, Fernandópolis/SP, Email: lsvanzela@yahoo.com.br.3 Mestranda, Universidade Estadual Paulista "Julio de Mesquita Filho" Ilha Solteira/SP, Email: karlla_senna@hotmail.com.4 Mestre, Professor Instituto Federal de Educação Ciência e Tecnologia de São Paulo - IFSP, Votuporanga/SP, Email: morais_guilherme@yahoo.com.br. 1 RESUMO Como os atuais métodos de manejo da irrigação são de difícil aplicação e custo relativamente elevado para irrigantes de baixa renda, este trabalho teve como objetivo o desenvolvimento de um aplicativo de baixo custo denominado SISMI (Sistema Web de Manejo da Irrigação), para o controle da água pelo manejo da irrigação.A plataforma foi desenvolvidautilizando a IDE NetBeans com o módulo da linguagem PHP, adaptada para computadores e celulares.O aplicativo SISMI indica o momentoe calcula o tempo de irrigação de acordo com uma adaptação da metodologia do balanço hídrico para o controle da irrigação, tanto para sistemas de irrigação por aspersão quanto para localizada. Para isso, são utilizados dados do clima (temperatura máxima e mínima, e precipitação), dados do tipo de solo da área (textura ou capacidade média de água disponível), dados da planta (espécie, fase de desenvolvimento, fator de disponibilidade de água no solo e profundidade efetiva do sistema radicular) e do sistema de irrigação (método de irrigação, eficiência de aplicação, vazão do emissor e espaçamento). O aplicativo (disponível em http://www.sismmi.com.br/), proporciona aos usuários uma ferramenta capaz de auxiliá-los no controle da aplicação de água pelo manejo da irrigação via atmosfera, de forma simples, de baixo custo e confiável, com aumento da eficiência do uso da água e energia na irrigação. Palavras-chave: recursos hídricos,evapotranspiração, irrigação por aspersão, irrigação localizada. PRANDOE. P.; VANZELAL. S.; SENA K. N.; MORAIS G.SYSTEM WEB FOR MANAGEMENT OF IRRIGATION - SISMI 2 ABSTRACT As the current water management methods are difficult to apply and relatively high cost for low-income irrigators, this study aimed to develop a low cost single application SISMI (Web Management System of Irrigation), for control water for irrigation management. The platform was developed using NetBeans IDE with the module of the PHP language, adapted to computers and mobile phones. The application SISMI indicates the time, and calculates the time of irrigation according to an adaptation of the method of water balance control for irrigation, both irrigation sprinkler systems and for localized. For this, climate data are used (maximum and minimum temperature and precipitation), soil type data area (texture or medium capacity available water), plant data (type, developmental stage, water availability factor in soil and effective depth of the root system) and irrigation system (irrigation method, application efficiency, emitter flow and spacing). The application (available in http://www.sismmi.com.br/), provides users with a tool to assist them in controlling the application of water for irrigation management in the atmosphere, so simple, inexpensive and reliable, with increased efficiency of water use and energy in irrigation. Keywords: drip irrigation, evapotranspiration, sprinkler irrigation, water resources.

La dermatitis asociada a la incontinencia, una manifestación clínica de lesiones de la piel asociadas a la humedad, es un estado caracterizado por irritación e inflamación, y es una consideración común en pacientes con incontinencia urinaria y/o fecal. Debido a la localización y apariencia de estas “lesiones por humedad”, a menudo se confunden con las úlceras por presión.<br /><br />Objetivo: Llevar a cabo una revisión bibliográfica acerca del término “lesiones por humedad”.<br /><br />Método: Se realizó una búsqueda de datos mediante el metabuscador Gerion del Sistema Sanitario Público de Andalucía. El término empleado para la búsqueda fue el concepto "lesiones por humedad" en inglés (“moisture lesions”). La recolección de datos fue realizada por una sola persona. Se identificaron y analizaron 18 artículos en los que se trata el concepto “lesiones por humedad”.<br /><br />Resultados y conclusiones: El diagnostico diferencial, usualmente basado en el examen visual, puede ayudar a determinar si está presente una úlcera por presión o una lesión por humedad. Los objetivos del tratamiento incluyen proteger la piel de un daño adicional por la exposición a irritantes y establecer un ambiente orientado a la curación.<br /><br />Esta revisión de la literatura subraya la escasa cantidad de información basada en la evidencia disponible y destaca la necesidad de realizar más estudios.Esto debería alentar a las enfermeras a prestar más atención a las lesiones por humedad y a su evaluación y tratamiento.<br />.<br /><br /><!--[if gte mso 9]><xml> <w:WordDocument> <w:View>Normal</w:View> <w:Zoom>0</w:Zoom> <w:TrackMoves /> <w:TrackFormatting /> <w:HyphenationZone>21</w:HyphenationZone> <w:PunctuationKerning /> <w:ValidateAgainstSchemas /> <w:SaveIfXMLInvalid>false</w:SaveIfXMLInvalid> <w:IgnoreMixedContent>false</w:IgnoreMixedContent> <w:AlwaysShowPlaceholderText>false</w:AlwaysShowPlaceholderText> <w:DoNotPromoteQF /> <w:LidThemeOther>ES</w:LidThemeOther> <w:LidThemeAsian>X-NONE</w:LidThemeAsian> 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The collision force of a heavy rail transit vehicle hitting a bridge pier is affected by many factors. In order to investigate the characteristics of the collision force when a heavy rail transit vehicle hits a bridge, the finite element software LS-DYNA is used to simulate the impact of a heavy rail transit vehicle on a bridge. The influence of the vehicle speed of heavy rail transit vehicles, the strength of bridge pier concrete, the spacing of pier stirrups, the ratio of pier stirrup reinforcement, and the eccentric distance between the vehicle and the bridge pier on the characteristics of the collision force. The simulation analysis results show that the total deformation frequency around the impact point of the bridge pier and the heavy rail transit vehicle decreases as the distance from the impact point increases, and the deformation frequency in the vicinity of the impact point is the largest. The speed of the heavy rail transit vehicle, the concrete strength of the bridge pier, the reinforcement ratio of the pier stirrup, the larger the eccentric distance between the vehicle and the bridge pier, and the smaller the spacing between the stirrups, the greater the collision force when the heavy rail transit vehicle hits the bridge pier.

Marine construction projects face significant challenges due to their physical environment as well as safety and environmental regulations. A well-engineered design with constructability in mind is essential for the successful construction of such projects. This study investigated the design features that created significant constructability benefits on the Pier 12 Replacement Project at San Diego, California. The US $82 Million fixed price design-build project involved the construction of a new 1,500-foot pier that could fulfill the utility needs of multiple stationed ships. The following design features were important in improving the constructability of the new pier: (1) Selection of plumb piles; (2) Design of uniform and longer pile spacing; (3) Increased depth of pile dowel tubes; (4) Use of T-headed pile dowels; (5) Avoiding the use of pile caps; (6) Minimizing the fluctuations of deck soffit elevations; (7) Minimizing the expansion joints; (8) Minimizing the variety of rebar sizes; and (9) Increasing the depth of concrete rebar cover.

AbstractTo correctly manage the road infrastructure before and after an earthquake, it is necessary to estimate and even predict the seismic performance of the bridge. The quantification of the bridge's seismic performance response was present in terms of displacement and also based on previous research of reinforced concrete bridge pier models. The displacement did define from a force lateral-displacement response diagram corresponding to the capacity curve, calculated through a non-linear static pushover analysis of the reinforced concrete bridge pier model for each limit state, from intact state to collapse. Thus, six defined displacements correspond to the cracking displacement, the yielding displacement, the spalling displacement, the crushing displacement, the buckling displacement, and the fracturing displacement. The six defined limit states correspond to the cracking limit state, the yielding limit state, the spalling limit state, the crushing limit state, the buckling limit state, and the fracturing limit state. Also, parametric analysis did carry out to evaluate the influence, relative importance, and trend of the input parameters in response to the seismic performance of the reinforced concrete bridge pier model. Eleven input parameters did analyze as the concrete compressive strength, the yield stress of reinforcing steel, the concrete cover thickness, the pier aspect ratio, the configuration of the transverse reinforcement, the spacing of the transverse reinforcing steel, the transversal diameter of the transverse reinforcing steel, the longitudinal reinforcement ratio, the transversal diameter of the longitudinal reinforcing steel, the axial load ratio, and coefficient of subgrade reaction.

Numerical simulations are being conducted on the behavior of thin-walled steel tubular bridge piers under cyclic lateral loading in the presence of constant axial compression loads. The effects of cyclic lateral loading on the behavior of the thin-walled steel tubular bridge piers have been evaluated through analysis of the hysteresis curve, envelope curve, stiffness, and strength degradation characteristics, and energy-dissipating capacity, including interaction effects of local buckling and flexural buckling, and post-buckling regimes. This study also compares the numerical analysis with experimental results available in the literature to validate the accuracy of the proposed finite element model. Based on this model, a range of relevant material and structural parameters will be investigated in future work. Numerous numerical specimens will be designed and analyzed, gaining further information about the influence of width-to-thickness ratio, Rt, column slenderness ratio, , material properties of the embedded shell plate, spacing of transverse stiffening ribs of the shell, height, and properties of partially infill concrete, and axial compression load.

Over the past decades, a variety of ice control structures (ICS) have been designed and built, but to date, there has been no systematic evaluation of the effectiveness of these structures. To achieve this objective, first an understanding of the interaction between the different ice processes and the ICSs must be established. For this purpose, a total of four ICSs located in the province of Québec were monitored during the 2021-2022 winter. The results showed that the ice jam holding time could vary from 1.5 to 68.5 hours. The release of the jam was mechanically driven when the ratio of release to initiation Froude number was higher than one and was thermally driven when this ratio was lower than one and the water temperature increased between initiation and release. Also, as the ratio of the total pier spacings to upstream river width increased, the holding time decreased.

"verbiage very thinly sliced and plated up real nice" (Barrett 1)IntroductionMany of us share in an obsessive collecting of cookbooks and recipes. Torn or cut from newspapers and magazines, recipes sit swelling scrapbooks with bloated, unfilled desire. They’re non-hybrid seeds, peas under the mattress, an endless cycle of reproduction. Desire and narrative are folded into each other in our drive, as humans, to create meaning. But what holds us to narrative is good writing. And what can also drive desire is image—literal as well as metaphorical—the visceral pleasure of the gaze, or looking and viewing the sensually aesthetic and the work of the imagination. Creative WritingCooking, winemaking, and food and wine writing can all be considered art. For example, James Halliday (31), the eminent Australian wine critic, posed the question “Is winemaking an art?,” answering: “Most would say so” (31). Cookbooks are stories within stories, narratives that are both factual and imagined, everyday and fantastic—created by both writer and reader from where, along with its historical, cultural and publishing context, a text gets its meaning. Creative writing, in broad terms of genre, is either fiction (imagined, made-up) or creative nonfiction (true, factual). Genre comes from the human taxonomic impulse to create order from chaos through cataloguing and classification. In what might seem overwhelming infinite variety, we establish categories and within them formulas and conventions. But genres are not necessarily stable or clear-cut, and variation in a genre can contribute to its de/trans/formation (Curti 33). Creative nonfiction includes life writing (auto/biography) and food writing among other subgenres (although these subgenres can also be part of fiction). Cookbooks sit within the creative nonfiction genre. More clearly, dietary or nutrition manuals are nonfiction, technical rather than creative. Recipe writing specifically is perhaps less an art and more a technical exercise; generally it’s nonfiction, or between that and creative nonfiction. (One guide to writing recipes is Ostmann and Baker.) Creative writing is built upon approximately five, more or less, fundamentals of practice: point of view or focalisation or who narrates, structure (plot or story, and theme), characterisation, heightened or descriptive language, setting, and dialogue (not in any order of importance). (There are many handbooks on creative writing, that will take a writer through these fundamentals.) Style or voice derives from what a writer writes about (their recurring themes), and how they write about it (their vocabulary choice, particular use of imagery, rhythm, syntax etc.). Traditionally, as a reader, and writer, you are either a plot person or character person, but you can also be interested primarily in ideas or language, and in the popular or literary.Cookbooks as Creative NonfictionCookbooks often have a sense of their author’s persona or subjectivity as a character—that is, their proclivities, lives and thus ideology, and historical, social and cultural place and time. Memoir, a slice of the author–chef/cook’s autobiography, is often explicitly part of the cookbook, or implicit in the nature of the recipes, and the para-textual material which includes the book’s presentation and publishing context, and the writer’s biographical note and acknowledgements. And in relation to the latter, here's Australian wine educator Colin Corney telling us, in his biographical note, about his nascent passion for wine: “I returned home […] stony broke. So the next day I took a job as a bottleshop assistant at Moore Park Cellars […] to tide me over—I stayed three years!” (xi). In this context, character and place, in the broadest sense, are inevitably evoked. So in conjunction with this para-textual material, recipe ingredients and instructions, visual images and the book’s production values combine to become the components for authoring a fictive narrative of self, space and time—fictive, because writing inevitably, in a broad or conceptual sense, fictionalises everything, since it can only re-present through language and only from a particular point of view.The CookbooksTo talk about the art of cookbooks, I make a judgmental (from a creative-writer's point of view) case study of four cookbooks: Lyndey Milan and Colin Corney’s Balance: Matching Food and Wine, Sean Moran’s Let It Simmer (this is the first edition; the second is titled Let It Simmer: From Bush to Beach and Onto Your Plate), Kate Lamont’s Wine and Food, and Greg Duncan Powell’s Rump and a Rough Red (this is the second edition; the first was The Pig, the Olive & the Squid: Food & Wine from Humble Beginnings) I discuss reading, writing, imaging, and designing, which, together, form the nexus for interpreting these cookbooks in particular. The choice of these books was only relatively random, influenced by my desire to see how Australia, a major wine-producing country, was faring with discussion of wine and food choices; by the presence of discursive text beyond technical presentation of recipes, and of photographs and purposefully artful design; and by familiarity with names, restaurants and/or publishers. Reading Moran's cookbook is a model of good writing in its use of selective and specific detail directed towards a particular theme. The theme is further created or reinforced in the mix of narrative, language use, images and design. His writing has authenticity: a sense of an original, distinct voice.Moran’s aphoristic title could imply many things, but, in reading the cookbook, you realise it resonates with a mindfulness that ripples throughout his writing. The aphorism, with its laidback casualness (legendary Australian), is affectively in sync with the chef’s approach. Jacques Derrida said of the aphorism that it produces “an echo of really curious, indelible power” (67).Moran’s aim for his recipes is that they be about “honest, home-style cooking” and bringing “out a little bit of the professional chef in the home cook”, and they are “guidelines” available for “sparkle” and seduction from interpretation (4). The book lives out this persona and personal proclivities. Moran’s storytellings are specifically and solely highlighted in the Contents section which structures the book via broad categories (for example, "Grains" featuring "The dance of the paella" and "Heaven" featuring "A trifle coming on" for example). In comparison, Powell uses "The Lemon", for example, as well as "The Sheep". The first level of Contents in Lamont’s book is done by broad wine styles: sparkling, light white, robust white and so on, and the second level is the recipe list in each of these sections. Lamont’s "For me, matching food and wine comes down to flavour" (xiii) is not as dramatic or expressive as Powell’s "Wine: the forgotten condiment." Although food is first in Milan and Corney’s book’s subtitle, their first content is wine, then matching food with colour and specific grape, from Sauvignon Blanc to Barbera and more. Powell claims that the third of his rules (the idea of rules is playful but not comedic) for choosing the best wine per se is to combine region with grape variety. He covers a more detailed and diversified range of grape varieties than Lamont, systematically discussing them first-up. Where Lamont names wine styles, Powell points out where wine styles are best represented in Australian states and regions in a longish list (titled “13 of the best Australian grape and region combos”). Lamont only occasionally does this. Powell discusses the minor alternative white, Arneis, and major alternative reds such as Barbera and Nebbiolo (Allen 81, 85). This engaging detail engenders a committed reader. Pinot Gris, Viognier, Sangiovese, and Tempranillo are as alternative as Lamont gets. In contrast to Moran's laidbackness, Lamont emphasises professionalism: "My greatest pleasure as a chef is knowing that guests have enjoyed the entire food and wine experience […] That means I have done my job" (xiii). Her reminders of the obvious are, nevertheless, noteworthy: "Thankfully we have moved on from white wine/white meat and red wine/red meat" (xiv). She then addresses the alterations in flavour caused by "method of cooking" and "combination of ingredients", with examples. One such is poached chicken and mango crying "out for a vibrant, zesty Riesling" (xiii): but where from, I ask? Roast chicken with herbs and garlic would favour "red wine with silky tannin" and "chocolatey flavours" (xiii): again, I ask, where from? Powell claims "a different evolution" for his book "to the average cookbook" (7). In recipes that have "a wine focus", there are no "pretty […] little salads, or lavish […] cakes" but "brown" albeit tasty food that will not require ingredients from "poncy inner-city providores", be easy to cook, and go with a cheap, budget-based wine (7). While this identity-setting is empathetic for a Powell clone, and I am envious of his skill with verbiage, he doesn’t deliver dreaming or desire. Milan and Corney do their best job in an eye-catching, informative exemplar list of food and wine matches: "Red duck curry and Barossa Valley Shiraz" for example (7), and in wine "At-a-glance" tables, telling us, for example, that the best Australian regions for Chardonnay are Margaret River and the Adelaide Hills (53). WritingThe "Introduction" to Moran’s cookbook is a slice of memoir, a portrait of a chef as a young man: the coming into being of passion, skill, and professionalism. And the introduction to the introduction is most memorable, being a loving description of his frugal Australian childhood dinners: creations of his mother’s use of manufactured, canned, and bottled substitutes-for-the-real, including Gravox and Dessert Whip (1). From his travel-based international culinary education in handmade, agrarian food, he describes "a head of buffalo mozzarella stuffed with ricotta and studded with white truffles" as "sheer beauty", "ambrosial flavour" and "edible white 'terrazzo'." The consonants b, s, t, d, and r are picked up and repeated, as are the vowels e, a, and o. Notice, too, the comparison of classic Italian food to an equally classic Italian artefact. Later, in an interactive text, questions are posed: "Who could now imagine life without this peppery salad green?" (23). Moran uses the expected action verbs of peel, mince, toss, etc.: "A bucket of tiny clams needs a good tumble under the running tap" (92). But he also uses the unexpected hug, nab, snuggle, waltz, "wave of garlic" and "raining rice." Milan and Corney display a metaphoric-language play too: the bubbles of a sparkling wine matching red meat become "the little red broom […] sweep[ing] away the […] cloying richness" (114). In contrast, Lamont’s cookbook can seem flat, lacking distinctiveness. But with a title like Wine and Food, perhaps you are not expecting much more than information, plain directness. Moran delivers recipes as reproducible with ease and care. An image of a restaurant blackboard menu with the word "chook" forestalls intimidation. Good quality, basic ingredients and knowledge of their source and season carry weight. The message is that food and drink are due respect, and that cooking is neither a stressful, grandiose nor competitive activity. While both Moran and Lamont have recipes for Duck Liver Pâté—with the exception that Lamont’s is (disturbingly, for this cook) "Parfait", Moran also has Lentil Patties, a granola, and a number of breads. Lamont has Brioche (but, granted, without the yeast, seeming much easier to make). Powell’s Plateless Pork is "mud pies for grown-ups", and you are asked to cook a "vat" of sauce. This communal meal is "a great way to spread communicable diseases", but "fun." But his passionately delivered historical information mixed with the laconic attitude of a larrikin (legendary Australian again) transform him into a sage, a step up from the monastery (Powell is photographed in dress-up friar’s habit). Again, the obvious is noteworthy in Milan and Corney’s statement that Rosé "possesses qualities of both red and white wines" (116). "On a hot summery afternoon, sitting in the sun overlooking the view … what could be better?" (116). The interactive questioning also feeds in useful information: "there is a huge range of styles" for Rosé so "[g]rape variety is usually a good guide", and "increasingly we are seeing […] even […] Chambourcin" (116). Rosé is set next to a Bouillabaisse recipe, and, empathetically, Milan and Corney acknowledge that the traditional fish soup "can be intimidating" (116). Succinctly incorporated into the recipes are simple greyscale graphs of grape "Flavour Profiles" delineating the strength on the front and back palate and tongue (103).Imaging and DesigningThe cover of Moran’s cookbook in its first edition reproduces the colours of 1930–1940's beach towels, umbrellas or sunshades in matt stripes of blue, yellow, red, and green (Australian beaches traditionally have a grass verge; and, I am told (Costello), these were the colours of his restaurant Panoroma’s original upholstery). A second edition has the same back cover but a generic front cover shifting from the location of his restaurant to the food in a new subtitle: "From Bush to Beach and onto Your Plate". The front endpapers are Sydney’s iconic Bondi Beach where Panoroma restaurant is embedded on the lower wall of an old building of flats, ubiquitous in Bondi, like a halved avocado, or a small shallow elliptic cave in one of the sandstone cliff-faces. The cookbook’s back endpapers are his bush-shack country. Surfaces, cooking equipment, table linen, crockery, cutlery and glassware are not ostentatious, but simple and subdued, in the colours and textures of nature/culture: ivory, bone, ecru, and cream; and linen, wire, wood, and cardboard. The mundane, such as a colander, is highlighted: humbleness elevated, hands at work, cooking as an embodied activity. Moran is photographed throughout engaged in cooking, quietly fetching in his slim, clean-cut, short-haired, altar-boyish good-looks, dressed casually in plain bone apron, t-shirt (most often plain white), and jeans. While some recipes are traditionally constructed, with the headnote, the list of ingredients and the discursive instructions for cooking, on occasion this is done by a double-page spread of continuous prose, inviting you into the story-telling. The typeface of Simmer varies to include a hand-written lookalike. The book also has a varied layout. Notes and small images sit on selected pages, as often as not at an asymmetric angle, with faux tape, as if stuck there as an afterthought—but an excited and enthusiastic afterthought—and to signal that what is informally known is as valuable as professional knowledge/skill and the tried, tested, and formally presented.Lamont’s publishers have laid out recipe instructions on the right-hand side (traditional English-language Western reading is top down, left to right). But when the recipe requires more than one item to be cooked, there is no repeated title; the spacing and line-up are not necessarily clear; and some immediate, albeit temporary, confusion occurs. Her recipes, alongside images of classic fine dining, carry the implication of chefing rather than cooking. She is photographed as a professional, with a chef’s familiar striped apron, and if she is not wearing a chef’s jacket, tunic or shirt, her staff are. The food is beautiful to look at and imagine, but tackling it in the home kitchen becomes a secondary thought. The left-hand section divider pages are meant to signal the wines, with the appropriate colour, and repetitive pattern of circles; but I understood this belatedly, mistaking them for retro wallpaper bemusedly. On the other hand, Powell’s bog-in-don’t-wait everyday heartiness of a communal stewed dinner at a medieval inn (Peasy Lamb looks exactly like this) may be overcooked, and, without sensuousness, uninviting. Images in Lamont’s book tend toward the predictable and anonymous (broad sweep of grape-vined landscape; large groups of people with eating and drinking utensils). The Lamont family run a vineyard, and up-market restaurants, one photographed on Perth’s river dockside. But Sean's Panoroma has a specificity about it; it hasn’t lost its local flavour in the mix with the global. (Admittedly, Moran’s bush "shack", the origin of much Panoroma produce and the destination of Panoroma compost, looks architect-designed.) Powell’s book, given "rump" and "rough" in the title, stridently plays down glitz (large type size, minimum spacing, rustic surface imagery, full-page portraits of a chicken, rump, and cabbage etc). While not over-glam, the photography in Balance may at first appear unsubtle. Images fill whole pages. But their beautifully coloured and intriguing shapes—the yellow lime of a white-wine bottle base or a sparkling wine cork beneath its cage—shift them into hyperreality. White wine in a glass becomes the edge of a desert lake; an open fig, the jaws of an alien; the flesh of a lemon after squeezing, a sea anemone. The minimal number of images is a judicious choice. ConclusionReading can be immersive, but it can also hover critically at a meta level, especially if the writer foregrounds process. A conversation starts in this exchange, the reader imagining for themselves the worlds written about. Writers read as writers, to acquire a sense of what good writing is, who writing colleagues are, where writing is being published, and, comparably, to learn to judge their own writing. Writing is produced from a combination of passion and the discipline of everyday work. To be a writer in the world is to observe and remember/record, to be conscious of aiming to see the narrative potential in an array of experiences, events, and images, or, to put it another way, "to develop the habit of art" (Jolley 20). Photography makes significant whatever is photographed. The image is immobile in a literal sense but, because of its referential nature, evocative. Design, too, is about communication through aesthetics as a sensuous visual code for ideas or concepts. (There is a large amount of scholarship on the workings of image combined with text. Roland Barthes is a place to begin, particularly about photography. There are also textbooks dealing with visual literacy or culture, only one example being Shirato and Webb.) It is reasonable to think about why there is so much interest in food in this moment. Food has become folded into celebrity culture, but, naturally, obviously, food is about our security and survival, physically and emotionally. Given that our planet is under threat from global warming which is also driving climate change, and we are facing peak oil, and alternative forms of energy are still not taken seriously in a widespread manner, then food production is under threat. Food supply and production are also linked to the growing gap between poverty and wealth, and the movement of whole populations: food is about being at home. Creativity is associated with mastery of a discipline, openness to new experiences, and persistence and courage, among other things. We read, write, photograph, and design to argue and critique, to use the imagination, to shape and transform, to transmit ideas, to celebrate living and to live more fully.References Allen, Max. The Future Makers: Australian Wines for the 21st Century. Melbourne: Hardie Grant, 2010. Barratt, Virginia. “verbiage very thinly sliced and plated up real nice.” Assignment, ENG10022 Writing from the Edge. Lismore: Southern Cross U, 2009. [lower case in the title is the author's proclivity, and subsequently published in Carson and Dettori. Eds. Banquet: A Feast of New Writing and Arts by Queer Women]Costello, Patricia. Personal conversation. 31 May 2012. Curti, Lidia. Female Stories, Female Bodies: Narrative, Identity and Representation. UK: Macmillan, 1998.Derrida, Jacques. "Fifty-Two Aphorisms for a Foreword." Deconstruction: Omnibus Volume. Eds. Andreas Apadakis, Catherine Cook, and Andrew Benjamin. New York: Rizzoli, 1989.Halliday, James. “An Artist’s Spirit.” The Weekend Australian: The Weekend Australian Magazine 13-14 Feb. (2010): 31.Jolley, Elizabeth. Central Mischief. Ringwood: Viking/Penguin 1992. Lamont, Kate. Wine and Food. Perth: U of Western Australia P, 2009. Milan, Lyndey, and Corney, Colin. Balance: Matching Food and Wine: What Works and Why. South Melbourne: Lothian, 2005. Moran, Sean. Let It Simmer. Camberwell: Lantern/Penguin, 2006. Ostmann, Barbara Gibbs, and Jane L. Baker. The Recipe Writer's Handbook. Canada: John Wiley, 2001.Powell, Greg Duncan. Rump and a Rough Red. Millers Point: Murdoch, 2010. Shirato, Tony, and Jen Webb. Reading the Visual. Crows Nest: Allen & Unwin, 2004.