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Автор: Grafiati
Опубліковано: 11 вересня 2023

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Статті в журналах з теми "FLAT PLATE STRUCTURAL SYSTEM"

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Firmansyah, Tomi. "REDESIGN BUILDING STRUCTURE RSGM UGM PROF. SOEDOMO USING FLAT SLAB METHOD WITH DROP PANELS." Inersia: Jurnal Teknik Sipil 12, no. 2 (October 25, 2020): 98–103. http://dx.doi.org/10.33369/ijts.12.2.98-103.

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Flat slab is reinforced concrete plate construction without beam. Without using beam, the obtainable profit is to minimize concrete volume, height/floor, and structural load. Other profits are simpler and economic reinforcement, scaffolding, and formwork. In this study, structural redesign of RSGM UGM Prof. Soedomo Yogyakarta building was made by using flat slab method. The objective of this study was to find structural dimension of floor and roof plates as well as reinforcement of the RSGM UGM Prof. Soedomo Building using structural system of flat slab, dimension of structural column and drop panel as well as reinforcement of the RSGM UGM Prof. Soedomo Building using structural system of flat slab. This method was to redesign using flat slab method complying with the standard of SNI 2847-2013 and software ETABS 2017. The results of analysis and calculation of structural dimension using flat slab method showed floor plate thickness of 170 mm; roof plate thickness, 120 mm; drop panel thickness, 270 mm with drop panel width of 2000 mm in direction x and 1500 mm in direction y, as well as use of column dimension of 500 mm x 500 mm. The analysis using software ETABS 2016 showed building structure in period (T) of 1.07 seconds.Keywords: RSGM UGM Prof. Soedomo Building, Drop Panel, Flat slab.
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2

Patil, Virendra P., and Vik ram. "Analytical Study on Effective Width of Equivalent Frame Flat Plate Structural System Subjected to Seismic Loads." Bonfring International Journal of Man Machine Interface 4, Special Issue (July 30, 2016): 56–62. http://dx.doi.org/10.9756/bijmmi.8157.

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3

Pavlikov, Andrii, Serhii Mykytenko, and Anton Hasenko. "Effective Structural System for the Affordable Housing Construction." International Journal of Engineering & Technology 7, no. 3.2 (June 20, 2018): 291. http://dx.doi.org/10.14419/ijet.v7i3.2.14422.

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This article falls within vital question in quickly builds construction – theoretical method for calculating the slabs and columns of such buildings. Calculation research of buildings with reinforced concrete frame slabs is described in the article. The features of work the collapsible flat plate ceiling in composition of reinforced concrete framework of building are analyzed. Problems in the design of framework building are considered in order to increase its reliability. The suggestions for directions of perfection the calculation of flat plate frame construction elements are proposed in the article. The novelty of this work is to get new theoretical data about bearing capacity and deformability of structural system for the affordable housing construction from reinforced concrete.
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Magerramov, Vagif Ali, and Mehman Huseyn Hasanov. "DYNAMIC PARAMETERS OF ELASTIC PLATE OPTICAL SWITCH DRIVES." SYNCHROINFO JOURNAL 6, no. 3 (2020): 20–23. http://dx.doi.org/10.36724/2664-066x-2020-6-2-20-23.

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The methods and means of improving the efficiency and the parameters of the dynamic parameters of the elastic plate of the optical commutator drive using advanced information and telecommunication technologies are analyzed. The bandwidth of optical communication networks based on systems with flat spring-loaded optical drive switch rods is investigated. On the basis of the study, the dynamic parameters of the elastic plate of the optical commutator drive are proposed a structural-functional scheme of a system with flat spring-loaded plates and linear algebraic equations for the dynamics of an elastic plate with the aid of which the equation for small oscillations of a rod near a rectilinear position is compiled. The equations of dynamics of systems with flat spring-loaded optical drive switch rods are considered and determined. On the basis of the system-technical analysis, a general integral of the spring deflection equation is determined. With the help of the solution, the equation for the dynamics of an elastic plate obtained a mathematical expression of the displacement of the upper end of the rod vertically of the spring-loaded drive system of the optical commutator.
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Huang, Ling. "Study on the Structural Floor Design of High-Rise Buildings." Applied Mechanics and Materials 256-259 (December 2012): 1017–21. http://dx.doi.org/10.4028/www.scientific.net/amm.256-259.1017.

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There is a high-rise building whose main structure is framework - core tube. In order to meet the requirements for architectural features, the distance between the outer frame and the exterior wall of core tube is relatively small, therefore the floor structure program adopts a thick plate and wide flat beam floor system, and part floors of the upper structure adopt a thick plate and dark beam system. As wide flat beams (dark beams) have a small height and cannot form effective support for the floor, special analysis has been made on floors from the security point of view without considering the role of wide flat beams (dark beams). The floor system of this high-rise building has been analyzed and discussed with regard to bearing capacity, deformation, comfort and other aspects.
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SUZUKI, Koichi, Tomohiro YOSHIDA, Akio TOMITA, and Yukitada OGIHARA. "PRODUCTIVITY AND STRUCTURAL PERFORMANCE OF STEEL/PRECAST CONCRETE HYBRID STRUCTURAL SYSTEM USING FLAT-STEEL-PLATE-CONNECTIONS." AIJ Journal of Technology and Design 5, no. 7 (1999): 157–60. http://dx.doi.org/10.3130/aijt.5.157.

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Kang, Thomas H. K., John W. Wallace, and Kenneth J. Elwood. "Nonlinear Modeling of Flat-Plate Systems." Journal of Structural Engineering 135, no. 2 (February 2009): 147–58. http://dx.doi.org/10.1061/(asce)0733-9445(2009)135:2(147).

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Kim, Dong-Jin, Hyun-Oh Shin, and Chi-Hyung Ahn. "Concrete Curing System Using Flat-Plate Induction Heating Coil." Journal of the Korean Society for Railway 25, no. 10 (October 31, 2022): 686–93. http://dx.doi.org/10.7782/jksr.2022.25.10.686.

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Mohamed, Osama Ahmed, Manish Kewalramani, and Rania Khattab. "Fiber Reinforced Polymer Laminates for Strengthening of RC Slabs against Punching Shear: A Review." Polymers 12, no. 3 (March 19, 2020): 685. http://dx.doi.org/10.3390/polym12030685.

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Reinforced concrete flat slabs or flat plates continue to be among the most popular floor systems due to speed of construction and inherent flexibility it offers in relation to locations of partitions. However, flat slab/plate floor systems that are deficient in two-way shear strength are susceptible to brittle failure at a slab–column junction that may propagate and lead to progressive collapse of a larger segment of the structural system. Deficiency in two-way shear strength may be due to design/construction errors, material under-strength, or overload. Fiber reinforced polymer (FRP) composite laminates in the form of sheets and/or strips are used in structurally deficient flat slab systems to enhance the two-way shear capacity, flexural strength, stiffness, and ductility. Glass FRP (GFRP) has been used successfully but carbon FRP (CFRP) sheets/strips/laminates are more commonly used as a practical alternative to other expensive and/or challenging methods such column enlargement. This article reviews the literature on the methodology and effectiveness of utilizing FRP sheets/strips and laminates at the column/slab intersection to enhance punching shear strength of flat slabs.
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Onoue, Kyohei, and Kenneth S. Breuer. "Vortex formation and shedding from a cyber-physical pitching plate." Journal of Fluid Mechanics 793 (March 14, 2016): 229–47. http://dx.doi.org/10.1017/jfm.2016.134.

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We report on the dynamics of the formation and growth of the leading-edge vortex and the corresponding unsteady aerodynamic torque induced by large-scale flow-induced oscillations of an elastically mounted flat plate. All experiments are performed using a high-bandwidth cyber-physical system, which enables the user to access a wide range of structural dynamics using a feedback control system. A series of two-dimensional particle image velocimetry measurements are carried out to characterize the behaviour of the separated flow structures and its relation to the plate kinematics and unsteady aerodynamic torque generation. By modulating the structural properties of the cyber-physical system, we systematically analyse the formation, strength and separation of the leading-edge vortex, and the dependence on kinematic parameters. We demonstrate that the leading-edge vortex growth and strength scale with the characteristic feeding shear-layer velocity and that a potential flow model using the measured vortex circulation and position can, when coupled with the steady moment of the flat plate, accurately predict the net aerodynamic torque on the plate. Connections to previous results on optimal vortex formation time are also discussed.
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Дисертації з теми "FLAT PLATE STRUCTURAL SYSTEM"

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Xue, Huizhong. "Progressive Collapse Resistance of Reinforced Concrete Flat Plate Structures." Thesis, Griffith University, 2019. http://hdl.handle.net/10072/388147.

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Progressive collapse of structures caused by extreme or accidental loads may lead to significant loss of life and property. Considerable research efforts have been made to date to mitigate the probability of progressive collapse and its consequences. However, a vast amount of the existing knowledge is pertinent to the reinforced concrete (RC) frame structures whilst the understanding of progressive collapse mechanisms of RC flat plate structures is still limited. RC flat plate structures represent one of the most common construction systems used in residential buildings and car parks in Australia and internationally. The absence of beams, column capitals and drop panels which can help to redistribute the concentrated loads, makes flat plate structures susceptible to punching shear failure at their slab-column connections and subsequent damage propagation, potentially leading to a catastrophic progressive collapse. The post-punching shear behaviour of the slab-column connections and the load redistribution in the slabs are of particular interests, which essentially dominate the load-carrying capacities after punching shear failure. To investigate the progressive collapse mechanisms and resistance of RC flat plates, experimental tests were performed on two 1/3-scaled 2  2-bay RC flat plate substructures specimens under an interior column removal scenario. In addition to the uniformly distributed load (UDL) imposed on the slab, an incremental downward displacement was applied to the interior slab-column connection to simulate the column loss and subsequent collapse. Custom-built column load cells were designed and carefully calibrated to ensure an accurate measurement of the reaction forces and moments at column bases. The overall load-displacement responses, crack propagations, failure modes and strain developments, were recorded and analysed. The complete collapse-resistant behaviour and load redistribution pattern of the specimens were examined, from which three load-carrying mechanism phases, in the form of flexural, tensile membrane and a combination of oneway catenary and dowel actions were distinguished in resisting the applied concentrated load. To study the punching and post-punching shear behaviours of RC slab-column connections being isolated from their parent flat plate structures, a set of numerical modelling techniques was established and verified against the experimental results of eight slab-column connections. In this modelling strategy, the concrete was simulated using solid elements with calibrated Continuous Surface Cap material model (CSCM) and failure criterion for punching shear. The reinforcing bars were explicitly created using beam elements with material properties obtained from the uniaxial tensile tests as well as calibrated failure criterion for rebar rupture. As a result, a competent 3D nonlinear numerical model of RC slab-column connections without shear reinforcement was created, with which, the punching shear failure featuring a critical punching shear surface and an abrupt drop of the applied force in the load-displacement response was able to be accurately reproduced. The post-punching shear behaviour, taking the form of an increased load-carrying capacity which was ceased by rebar fracture in the suspension stage, was also well captured. Using the proposed numerical model, typical punching and post-punching shear failure mechanisms were studied in some detail, finally leading to a simple yet effective analytical solution to accurately and reliably predict the postpunching shear response of RC slab-column connections. To investigate the influences of critical slab design parameters on the progressive collapse resistance of RC flat plate structures subjected to an interior column loss, the already established numerical modelling strategy for RC slab-column connections was employed to simulate our own experiment of the 2  2-bay flat plate substructure under a concentrated load and a similar test under a UDL in the literature for model validation. In addition to the modelling techniques developed for RC slab-column connections, the modelling of bond-slip behaviour at the interface between concrete and reinforcing bars was also highlighted, which was found to have a significant impact on the structural performance of flat plate substructures in progressive collapse. The key structural behaviours of the substructures under large deformations including the tensile membrane and suspension actions were able to be replicated. Further, the validated numerical model being subjected to a concentrated load was used to conduct a series of parametric studies in which the influences of concrete strength, slab thickness and reinforcement ratio on the progressive collapse performance were examined. The outcomes of the parametric studies indicated that the concrete strength and the slab thickness only affected the flexural capacity to different degrees with no impact on the post-failure capacity, whereas the load-carrying capacity due to the tensile membrane action was primarily governed by the amount of slab reinforcement. This research, covering experimental, numerical and analytical studies of RC slab-column connections and flat plate substructures with a missing interior column, offers a further understanding of their punching and post-punching shear behaviours as well as collapseresistant mechanisms. The numerical modelling techniques developed for the substructures with an interior column loss can be readily used to simulate other column loss scenarios (edge column, corner column and multiple columns). Further detailed analyses of the 3D numerical models will help to establish a simplified numerical model to facilitate collapse simulations of entire flat plate structures induced by any potential column removal scenarios.
Thesis (PhD Doctorate)
Doctor of Philosophy (PhD)
School of Eng & Built Env
Science, Environment, Engineering and Technology
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Vaňková, Ivana. "Polyfunkční dům." Master's thesis, Vysoké učení technické v Brně. Fakulta stavební, 2017. http://www.nusl.cz/ntk/nusl-265651.

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This master thesis deals with study of area, which is intended for construction of apartments building and public facilities. Four building are projected with visually connection by a covered parking place. There are three apartments building and one multifunctional building. The aim of this master thesis is elaboration of project documentation for the implementation of new multifunctional house in the area of the city Uherský Brod. In the first floor is designed café, which has its own entrance. In the second part of the floor is household equipment and utility room, which also has a separate entrance from outside. In the second to fourth floor is ten housing units of different sizes. The object is located on a gently sloping land in the northern part of Uherský Brod in the new city district called “Nad Zámkem”. Wall construction is designed from Porotherm elements. Ceiling construction is monolithic reinforced concrete. Roofing is solved by single-flat roof. The drawing part of this master thesis is processed in AutoCAD.
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Egberts, Michael. "Preventing progressive collapse of flat plate structures with an irregular layout of structural integrity reinforcement." Thesis, McGill University, 2009. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=40841.

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To investigate the post-punching shear resisting mechanism of slab-column connections having an irregular layout of structural integrity steel, two test specimens were designed, constructed and tested. The aim of the research program is to determine the appropriateness of the CSA A23.3-04 code provision which assume that the post-punching shear resistance is a function of the total area of bottom steel. The first of two test specimens experienced significant tilting which may have reduced the post-punching resistance of the slab-column connection, however, the second test specimen was able to resist the expected post-punching load as required by the CSA code. The slabs were designed with 150% of the required structural integrity steel, a ratio of three to one for area of structural integrity steel provided in each span direction, detailing the minimum slab thickness required for the span length between columns, and provisions for high design live loads. These factors likely reduce the post-punching resistance of slab-column connections, however, the details specified using the code were adequate.
Pour investiguer le mécanisme de résistance des raccordements dalle-poteau avec une disposition irrégulière d’armature pour l’intégrité structurale, deux spécimens ont été conçus, construits et puis testés. Le but du programme de recherche est de déterminer si les provisions inclues dans le code CSA A23.3-04 présentement sont appropriées. Celles-ci supposent que la résistance post-poinçonnement est déterminée en fonction de l’aire totale de l’armature placé dans le bas de la dalle. Le premier spécimen a subi un penchement significatif ce qui aurais pu réduire sa résistance. En revanche, le deuxième spécimen a réussi à résister la charge prévue par l’obligation indiquée dans le code CSA. Les dalles ont été conçues avec 150% de l’armature requise pour intégrité structurale, incluaient un rapport de trois a un pour l’aire d’acier pour l’intégrité structurale dans chaque direction, étaient détaillées avec l’épaisseur de dalle la plus petite pour la portée entre les colonnes et les provisions de conception pour les charges vives les plus élevées ont été utilisées. Tous ces éléments réduisent probablement la résistance des connections dalle-poteau. Cependant, le deuxième specimen était quand même capable d’atteindre la résistance de post-poinçonnement prévue.
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Kessentini, Hamdi. "Numerical and experimental study of a flat plate collector with honeycomb transparent insulation and overheating protection system." Doctoral thesis, Universitat Politècnica de Catalunya, 2014. http://hdl.handle.net/10803/144658.

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In this thesis a flat plate collector (FPC) with plastic transparent insulation materials (TIM) and a low-cost overheating protection system destined for heat supply from 80 to 120°C is presented. A ventilation channel with a thermally actuated door is inserted below the absorber allowing to protect the collector from stagnation conditions, while preserving good performance during normal operation. For this objective, a prototype has been constructed and experimentally tested and in parallel, numerical and CFD models have been implemented with the aim of predicting the thermal behavior of this collector. The present thesis consists of six chapters and a brief summary of each one is given below: In the first chapter, a literature survey is carried out in order to present the most updated R&D status in the field of solar heat at medium temperatures. This literature research has allowed to appreciate the latest findings and key challenges related to the studied topic and to present the contribution of this work to the pool of existing knowledge. The second chapter is devoted to the description of the experimental set up. The problem of overheating for FPC with TIM is first pointed out and the technical description of the studied FPC is then presented. The different sensors used and the test procedures adopted during the experiments are presented. In the third chapter, a fast calculation numerical model is implemented. This model is based on the resolution of the different components of the collector by means of a modular object-oriented platform. Indoor and outdoor tests are performed and have shown the effectiveness of the overheating system being able to maintain low enough temperatures at the collector preventing thus the plastic TIM from stagnation conditions. The comparison of the numerical results with experiments has demonstrated that the code can accurately reproduce the performance of the collector. Several parametric simulations are then performed in order to optimize the collector design: 3125 different configurations are evaluated by means of virtual prototyping and the results have allowed to propose the most promising design of a stagnation proof FPC with plastic TIM able to work at operating temperature 100°C with promising efficiency. In the forth chapter, the most critical elements of the collector (ventilation channel and air gap&TIM) have been substituted by high-level CFD objects in the implemented modular object-oriented code. For the detailed numerical simulations, Large Eddy Simulations (LES) modeling is used. In order to speed-up the simulations, parallelisation techniques are used. The numerical solutions are firstly validated with benchmark cases. Then, the general model of the collector is validated by comparison of the numerical results with the indoor experimental tests showing a reasonable agreement. The preliminary CFD simulation results have allowed to understand the heat transfer and fluid flow at different operating temperatures of the studied collector. In the fifth chapter, a heat transfer analysis of the honeycomb TIM is carried out. The combined radiation and conduction heat transfer across the isolated cell is treated by means of the solution of the energy equation in its three dimensional form which is coupled to the Radiative Transfer Equation (RTE). The Finite Volume Method is used for the resolution of the RTE. The numerical results are compared to experimental measurements of the heat transfer coefficient on various honeycomb TIM given by different authors in the literature showing acceptable agreements. Finally, a parametric study is conducted in order to investigate the effect of the variation of the most relevant optical and dimensional parameters of the TIM on the heat transfer. Finally, the last chapter summarizes the contribution of this thesis and discuss the possible directions of future research.
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Shepley, Martin Gerard. "The kinematic and structural evolution of the Embrunais-Ubaye nappe system (southern French Alps)." Thesis, University of Oxford, 1991. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.314922.

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Deshpande, Dhananjay D. "Computer Modeling Of A Solar Thermal System For Space Heating." Wright State University / OhioLINK, 2016. http://rave.ohiolink.edu/etdc/view?acc_num=wright1484142894264319.

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Sari, Ozgur Gokmen. "Exergy Analysis Of A Solar Assisted Absorption Heat Pump For Floor Heating System." Master's thesis, METU, 2004. http://etd.lib.metu.edu.tr/upload/2/12604765/index.pdf.

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Solar assisted single-stage absorption heat pump (AHP) was used to supply energy to a floor-heating system by using the exergy methods. An existing duplex-house,in Ankara, with a heating load of 25.5 kW was analysed. Heating loads of the spaces in the building were calculated and a floor heating panel was modelled for each space leading to the capacity of the AHP before it was designed. Solar energy was delivered to the evaporator and high temperature heat input delivered to the genarator are met by auxiliary units operating with natural gas.The solar energy gained by flat-plate collectors was circulated through AHP.The anaysis performed according to the storage tank temperature reference value if the water temperature leaving the storage tank exceeds a predetermined value it is directly circulated through the floor heating system. Exergue analysis were carried out with Mathcad program. Exergy analysis showed that irreversibility have an impact on absorption system performance.This study indicated which components in the system need to be improved thermally.A design procedure has been applied to a water-lithium-bromide absorption heat pump cycle and an optimisation procedure that consists of determinig the enthalpy, entropy ,exergy, temperature, mass flow rate in each component and coeficient of performance and exergetic coefficient of performance has been performed and tabulated.
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Filatov, Artem. "Concentrating Collector for Torsång District Heating System." Thesis, Högskolan Dalarna, Energiteknik, 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:du-28539.

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In this thesis report for Dalarna University in Borlange and Absolicon company the study of a possibility to add an array of concentrating solar collectors to a Torsång district heating system was done. The whole idea of this work was to make a simulation of this kind of system, trying to get 15-20% of solar fraction, and make an economical evaluation. At the same time, another goal was to make two comparisons: between concentrating and flat-plate collector in the same system, and between two tools for collector analysis – Polysun and Absolicon tool, based on TRNSYS, which was designed to estimate the output of the collector for a certain temperature, without any load. During the study, the analysis of the simulating tools was made and the combination of those two tools was used. Using long iteration cycles, involving changing the field layout, number of collectors and distance between collector rows in flat-plate collector case, both types of collectors were analyzed. The method of the analysis was to get an equal output of the field and see the differences, which appear while using different collector types.
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Kosařová, Pavla. "Přístavba fary a komunitního centra ke kostelu v Brně-Líšňi." Master's thesis, Vysoké učení technické v Brně. Fakulta stavební, 2016. http://www.nusl.cz/ntk/nusl-240468.

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The final thesis is focused on the annex of complex of mixed-use buildings toward the church in Brno-Lisen. A pair of buildings consists of a one-storey Building a community of Salesians and two-storey building with parish office. The group of buildings is located on the southern slope in the housing estate of a block of flats from the 80s. Objects vertically copy a curve of the slope and is increasing to the dominant church building. Block of buildings are adjacent by shorter side to the church building and form a small enclosed courtyard inside. The buildings are designed at brick ceramic blocks, buildings are withnout cellar, with flat green roof. Living rooms are located on the southern facade, the north is reserved for corridors. The entrance to the courtyard is connected to the existing service road. Pedestrian approach builds on the existing surrounding landscaping.
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Khazaradze, Giorgi. "Tectonic deformation in western Washington State from global positioning system measurements /." Thesis, Connect to this title online; UW restricted, 1999. http://hdl.handle.net/1773/6841.

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Книги з теми "FLAT PLATE STRUCTURAL SYSTEM"

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Müller, Michael D. Analysis of long-term GPS observations in Greece (1993-2009) and geodynamic implications for the Eastern Mediterranean. Zürich: Schweizerische Geodätische Kommission, 2011.

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in Research on Fossil Energy Resources and in Earthquake Hazard Assessment" (2002 Geological Institute of Hungary) Workshop on "Application of GPS in Plate Tectonics. Proceedings of the Workshop on Application of GPS in Plate Tectonics, in Research on Fossil Energy Resources and in Earthquake Hazard Assessment, Geological Institute of Hungary, August 2002, Budapest. Edited by Fodor László 1961-, Brezsnyánszky Károly, and Magyar Állami Földtani Intézet. Budapest: Magyar Állami Földtani Intézet, 2005.

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3

Sheaff, Rod, and Jill Schofield. Inter-Organizational Networks in Health Care. Edited by Ewan Ferlie, Kathleen Montgomery, and Anne Reff Pedersen. Oxford University Press, 2016. http://dx.doi.org/10.1093/oxfordhb/9780198705109.013.29.

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Inter-organizational networks have proliferated in health systems, as has network research, but coherent explanations relating the varieties of health network to their respective structures, activities and outcomes remain lacking. Focusing on their core productive processes and their governance structures, this chapter contrasts care networks with program networks. It compares these concepts with findings from some primary research on NHS health networks during 2005–10, and notes some implications for network theory and research. NHS networks’ dense, flat structures reflect these networks’ dual function as both care and as program networks. These findings are relevant to the “integrated care” networks developing in many health systems. The development of these networks appears, partly, to be a workaround for the obstacles that market and quasi-market health systems place in the way of coordinating complex care across multiple separate providers.
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Частини книг з теми "FLAT PLATE STRUCTURAL SYSTEM"

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Yang, Z., H. Guan, Y. Li, and X. Z. Lu. "Numerical study of dynamic collapse resistance of an RC flat plate substructure under an interior column removal scenario." In Current Perspectives and New Directions in Mechanics, Modelling and Design of Structural Systems, 645–49. London: CRC Press, 2022. http://dx.doi.org/10.1201/9781003348443-107.

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Yang, Z., H. Guan, Y. Li, and X. Z. Lu. "Numerical study of dynamic collapse resistance of an RC flat plate substructure under an interior column removal scenario." In Current Perspectives and New Directions in Mechanics, Modelling and Design of Structural Systems, 227–28. London: CRC Press, 2022. http://dx.doi.org/10.1201/9781003348450-107.

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Hoffman, Edward S., David P. Gustafson, and Albert J. Gouwens. "Two-Way Solid Flat Plate Design." In Structural Design Guide to the ACI Building Code, 76–141. Boston, MA: Springer US, 1998. http://dx.doi.org/10.1007/978-1-4757-6619-6_5.

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4

Bogdanova, Olga. "Safe Loading of the Orthotropic Plate with Periodic System of Collinear Cracks." In Structural Integrity, 235–41. Cham: Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-47883-4_43.

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5

Kalbande, Vednath P., and Pramod V. Walke. "Oil- and Aluminum-Based Thermal Storage System Using Flat Plate Solar Collector." In Smart Technologies for Energy, Environment and Sustainable Development, 553–62. Singapore: Springer Singapore, 2019. http://dx.doi.org/10.1007/978-981-13-6148-7_53.

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Khandelwal, Neelam, Jatin Singh, Ishita Singh, Manikant Singh, and Raj Kumar Kesharwani. "Design Analysis of Solar Water Distillation System by Using Flat Plate Collector." In Lecture Notes in Mechanical Engineering, 169–78. Singapore: Springer Nature Singapore, 2022. http://dx.doi.org/10.1007/978-981-19-3498-8_15.

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Bahnamiri, A. B., T. D. Hrynyk, and C. Y. Goh. "Estimating post-punching capacity and progressive collapse resistance of RC flat plates using shell-based FEA." In Current Perspectives and New Directions in Mechanics, Modelling and Design of Structural Systems, 1224–29. London: CRC Press, 2022. http://dx.doi.org/10.1201/9781003348443-199.

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8

Bahnamiri, A. B., T. D. Hrynyk, and C. Y. Goh. "Estimating post-punching capacity and progressive collapse resistance of RC flat plates using shell-based FEA." In Current Perspectives and New Directions in Mechanics, Modelling and Design of Structural Systems, 423–24. London: CRC Press, 2022. http://dx.doi.org/10.1201/9781003348450-199.

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Fukuda, Junko, and Jiro Suhara. "Design system of optimizing contour shape to minimize stress concentration in flat plate." In Computer Applications in Production Engineering, 102–10. Boston, MA: Springer US, 1995. http://dx.doi.org/10.1007/978-0-387-34879-7_11.

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Trinh, Tran Mai Kim Hoang, Sanaul Chowdhury, Jeung-Hwan Doh, and Cai Shunyao. "The Impacts of Different Structural Design Alternatives on the Embodied Emissions of Flat Plate Buildings." In Lecture Notes in Civil Engineering, 1199–208. Singapore: Springer Singapore, 2020. http://dx.doi.org/10.1007/978-981-15-5144-4_118.

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Тези доповідей конференцій з теми "FLAT PLATE STRUCTURAL SYSTEM"

1

"Post-Punching Capacity of Flat-Plate Floor Systems." In SP-309: Structural Integrity and Resilience. American Concrete Institute, 2016. http://dx.doi.org/10.14359/51689096.

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Clark, Don T., Ali S. Siahpush, and Gary L. Anderson. "Model Based Structural Evaluation and Design of Overpack Container for Bag-Buster Processing of TRU Waste Drums." In ASME/JSME 2004 Pressure Vessels and Piping Conference. ASMEDC, 2004. http://dx.doi.org/10.1115/pvp2004-2775.

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This paper describes a materials and computational model based analysis utilized to design an engineered “overpack” container capable of maintaining structural integrity for confinement of transuranic wastes undergoing the cryo-vacuum stress based “Bag-Buster” process and satisfying DOT 7A waste package requirements. The engineered overpack is a key component of the “Ultra-BagBuster” process/system being commercially developed by UltraTech International for potential DOE applications to non-intrusively breach inner confinement layers (poly bags/packaging) within transuranic (TRU) waste drums. This system provides a lower cost/risk approach to mitigate hydrogen gas concentration buildup limitations on transport of high alpha activity organic transuranic wastes. Four evolving overpack design configurations and two materials (low carbon steel and 300 series stainless) were considered and evaluated using non-linear finite element model analyses of structural response. Properties comparisons show that 300-series stainless is required to provide assurance of ductility and structural integrity at both room and cryogenic temperatures. The overpack design were analyzed for five accidental drop impact orientations onto an unyielding surface (dropped flat on bottom, bottom corner, side, top corner, and top). The first three design configurations failed the bottom and top corner drop orientations (flat bottom, top, and side plates breached or underwent material failure). The fourth design utilized a protruding rim-ring (skirt) below the overpack’s bottom plate and above the overpack’s lid plate to absorb much of the impact energy and maintained structural integrity under all accidental drop loads at both room and cryogenic temperature conditions. Selected drop testing of the final design will be required to confirm design performance.
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Oliveira, Marcos B., Chang Liu, Mengtao Zhao, and Samuel M. Felton. "Design of a Variable Stiffness Wrist Brace With an Origami Structural Element." In ASME 2018 Conference on Smart Materials, Adaptive Structures and Intelligent Systems. American Society of Mechanical Engineers, 2018. http://dx.doi.org/10.1115/smasis2018-8049.

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This paper presents a motor driven wrist brace that can adjust its stiffness by changing its mesoscale geometry. The design involves a plate structure that folds from a flexible flat shape to a stiff corrugated shape by means of a motor driven tendon. The structure is built using a laminate of rigid and flexible layers, with embedded flexural hinges that allow it to fold. The paper proposes a simplified analytical model to predict stiffness, and physical three-point bending tests indicate that the brace can increase its stiffness up to fifty times by folding.
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4

Ratcliffe, Colin P., Roger M. Crane, and Armando L. Santiago. "Optimizing Reinforced Polyurethane as a Combined Structural and Damping Component." In ASME 1996 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 1996. http://dx.doi.org/10.1115/imece1996-0204.

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Abstract In many engineering applications, mechanical vibration can cause structural failure or other problems. While traditional composite systems are typically more heavily damped than metal structures, there may still be insufficient energy dissipation for vibration control. When more control is required, additional mechanical damping treatments may be applied, commonly in the form of viscoelastic free or constrained layers. Reinforced polyurethane has been shown to be both a structural system, and one that dissipates significant amounts of vibration energy. This material system has been shown to significantly enhance the damping loss factor of cylindrical and flat plate structures. For these structures, mechanical strength and flexibility were the primary design requirements. The level of damping for each structure was quantified, but the material systems were not optimized for energy dissipation. The high level of damping in these reinforced polyurethane systems was attributed to a combination of the flexibility, i.e. high strains, of the material, coupled with energy dissipation within the matrix. As the system deforms, the matrix is subject to time-varying shear, and energy is dissipated in the matrix. This mechanism can be likened to micro-mechanical constrained layer damping. This paper presents an experimental technique for the determination of the damping of thin fiber reinforced damping layers. A conventional composite beam with varying thicknesses of reinforced polyurethane was modally tested. The results of the modal analysis were then processed to yield the damping of the free layer. The experimentally determined levels of damping were significantly higher than conventional free layer treatments, especially at low frequencies.
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Medina, Lior, Rivka Gilat, and Slava Krylov. "On the Usage of Berger’s Model for Electrostatically Actuated Circular Curved Micro Plates." In ASME 2017 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. American Society of Mechanical Engineers, 2017. http://dx.doi.org/10.1115/detc2017-67523.

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Micro- and nanolectromechanical systems (MEMS/NEMS) incorporating two-dimensional structural elements such as plates attracted significant interest in recent years. In this work, we explore implementation of a model based on Berger’s approximation, which significantly simplifies the formulation of a curved plate and describes it by a single governing equation. The solution of this equation is based on the Galerkin decomposition with buckling modes of an initially flat plate used as the base functions. To track the unstable branches of the equilibrium curve, a continuous method based on the Riks algorithm is implemented. The validation of the models is conducted for two loading cases, “mechanical” deflection-independent load, and electrostatic displacement-dependent load. In the case of an initially flat plate, results provided by the reduced order (RO) Galerkin models were compared to results available in the literature. In the case of a curved plate undergoing “mechanical” loading, results of a direct finite elements (FE) analysis, as well as of a finite differences (FD) analysis, were used as a reference. We show that the DOF Berger RO model can be conveniently used for analysis of plates with small curvature, as it provides satisfactory accuracy. Further more, a single DOF model can be used for the development of a bistability criterion.
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SIEBER, PAUL, KONSTANTINOS AGATHOS, ROHAN SOMAN, WIESLAW OSTACHOWICZWIESLAW OSTACHOWICZ, and ELENI CHATZI. "A PARAMETRIZED REDUCED ORDER MODEL FOR RAPID EVALUATION OF FLAWS IN GUIDED WAVE TESTING." In Structural Health Monitoring 2021. Destech Publications, Inc., 2022. http://dx.doi.org/10.12783/shm2021/36315.

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Data from guided wave propagation in structures, produced by piezoelectric elements, can offer valuable information regarding the possible existence of flaws. Numerical models can be used to complement the attained data for refining the potential for flaw characterization. Unfortunately, evaluation of these models remains computationally expensive, especially for small defects, due to the short wavelength required for detection and, the in turn fine discretization in time and space. This renders real–time simulation infeasible, rendering GW–approaches less attractive for inverse problem formulations, where the forward problem needs to be solved several times. We propose an accelerated computation method, which exploits the properties of guided waves interacting with defects, where an extra band of waves is created, whose phase is differentiated, depending on the location of the flaw (e.g. notch) within the medium. To expedite the actual simulation for the inverse problem, the system is parametrized in terms of the location of the flaw and, in an offline phase, is repeatedly solved to produce snapshots of the system’s response. The snapshots are used to create a physics–informed interpolation of the solution of the wave propagation problem for different flaw locations. The gained information is then used in an inverse setting for localising the defect using an evolution strategy as a means to stochastic, derivative-free numerical optimization. The method is demonstrated in simulations of a 2D slice of a thin plate.
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Salem, Abouelnadar, Guozhong Zhang, and Hongchang Wang. "The Effect of Integrating a Bio-Inspired Convex Structure with a Low-Surface Energy Polymer on Soil Adhesion and Friction." In 11th Asia-Pacific Regional Conference of the ISTVS. International Society for Terrain-Vehicle Systems, 2022. http://dx.doi.org/10.56884/guln6927.

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The capacity of soil-burrowing animals to move freely in sticky soil is a motivational trait for developing soil engaging tools with high operational efficiency. The hydrophobicity and morphological profiles of soil animals' skin were reported to be the key pillars in producing their anti-adhesive mechanisms. Ultra-high molecular weight polyethylene (UHMW-PE) possess outstanding corrosion resistance, hydrophobicity, and chemical stability, which qualify it as a potential choice in soil adhesion reduction. Hence, this study aimed to investigate the feasibility of integrating a domed surface inspired by the micro-convex structure of the dung beetle skin with the UHMW-PE as a surface coating for soil engaging components in terms of soil adhesion reduction. The sliding resistance of three sliding plates (flat plate of carbon steel, flat plate of UHMW-PE, and domed plate of UHMW-PE), entirely identical in the projected area, was evaluated in two soil textures of silty clay and sandy clay loam, at four moisture levels of 18, 23, 28, and 33% and four drag speeds of 0.15, 0.2, 0.25, and 0.3 m s-1 using a completely randomized design. The dimensions of the embossed domes on the tested plate surface and their distribution pattern were established based on the previously published structural optimization of the bioinspired convex surface. In each treatment, the tested plate was dragged for 0.7 m of the soil bin length, and the sliding resistance was recorded continuously using the distributed stress and strain test and analysis system (DH3820 N). The coefficients of adhesion and friction were calculated according to the Mohr-Coulomb failure criterion. The variance analysis revealed that all investigated parameters significantly affected coefficients of adhesion and friction. In addition, as compared to flat steel plates, UHMW-PE coated plates exhibited much lower adhesion in all treatments, paving the way for practical applications in soil adhesion reduction and soilengaging component optimization.
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Sim, Woo-Lim, Hyunkyoung Shin, and Rupesh Kumar. "Experimental Study of the Stationkeeping of a Floater Using Passive Flapping Flat Plates in Waves." In ASME 2019 2nd International Offshore Wind Technical Conference. American Society of Mechanical Engineers, 2019. http://dx.doi.org/10.1115/iowtc2019-7527.

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Abstract To effectively use the resources of marine environments, it is necessary to consider the deep and remote parts of the ocean. Stationkeeping of floating offshore wind turbines (FOWTs) mainly relies on mooring lines[1][2]. However, current mooring lines have structural and economical limitations for applications in extreme sea environments. The University of Ulsan is conducting ongoing research to develop a new economical stationkeeping system that can maintain the position of a FOWT in the deep sea using passive flapping foils. This paper describes an experimental study of the stationkeeping of actual structures based on the above-mentioned investigations and suggested directions to supplement the deficiencies in stationkeeping systems using passive flapping foils. This experiment was carried out in the three-dimensional “Widetank” and in actual sea conditions, focusing on the drift of a floater in the surge direction.
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Gresil, Matthieu, Bin Lin, Yanfeng Shen, and Victor Giurgiutiu. "Predictive Modeling of Space Structures for SHM With PWAS Transducers." In ASME 2011 Conference on Smart Materials, Adaptive Structures and Intelligent Systems. ASMEDC, 2011. http://dx.doi.org/10.1115/smasis2011-5190.

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This paper presents an investigation of predictive modeling of space structures for structural health monitoring (SHM) with piezoelectric wafer active sensors (PWAS) transducers. The development of a suitable SHM system for complex space structure is not trivial; creating a robust SHM capability requires at least: (a) flexible accommodation of numerous configurations; (b) detection of damage in complex multifunctional structures; (c) identification if mechanical interfaces are properly connected. To realize this, we propose a predictive modeling approach using both analytical tools and finite element method (FEM) to study the health status of the structure, the power and energy transduction between the structure and the PWAS. After a review of PWAS principles, the paper discusses the modeling and the power and energy transduction between structurally guided waves and PWAS. The use of guided wave (GW) and the capability of embedded PWAS to perform in situ nondestructive evaluation (NDE) are explored. FEM codes are used to simulate GW of 2D and 3D space structure using the commercials software ABAQUS. PWAS transducers placement at different location on a flat plate and on an isogrid panel was simulated. The signal scattered by a crack emerging from the hole is simulated. Predictive modeling of power and energy transduction is discussed using an analytical approach. This model of 2-D power and energy transduction of PWAS attached to structure allows examination of power and energy flow for a circular crested wave pattern. Wave propagation method for an infinite boundary plate, electromechanical energy transformation of PWAS and structure, and wave propagation energy spread out in 2-D plate are considered. The parametric study of PWAS size, impedance match gives the PWAS design guideline for PWAS sensing and power harvesting applications.
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Eto, Hiroaki, Osamu Saijo, and Koichi Maruyoshi. "A Study on Wave Response and Evaluation of Habitability of Floating Restaurant." In ASME 2008 27th International Conference on Offshore Mechanics and Arctic Engineering. ASMEDC, 2008. http://dx.doi.org/10.1115/omae2008-57364.

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Since Japan is limited in area, the effective ocean space development is very important and urgent subject. Concerning a research and development of effective ocean space utilization, the MEGA-FLOAT was one of the most famous projects in Japan that had the purpose of a floating airport construction, and the numerous R & D were conducted aiming at actual construction and those results were reported in respect of conceptual design, construction method, fluid analysis, structural dynamic analysis, environment issue etc. However, the end was faced without achieving it, it can be said that the effect is large. After the end of that project, the realistic, small or medium size structure began to be paid to attention. As the good example of such a kind floating structure, floating pier and disaster prevention base having an advantage against an earthquake, floating restaurant etc. were constructed shown in Figure 1. In this paper, assuming the small size floating restaurant, the wave response analysis was studied, and the habitability of that structure was evaluated from the response calculation results. Concretely, the floating base part; barge type of the restaurant building was designed by the Class NK (Rules and Guidance for the survey and construction of steel ships, Part Q Steel barges). The calculation model consists of a three-story building and the base, that floating artificial base supporting the building was assumed by the elastic plate structural system, and also that building was of the frame structure system. In order to structural analysis, the restaurant model of two different structural systems was united into one body system. In this paper, it is called the hybrid structural system. Fluid effect was analyzed as the fluid-structural interaction problem. Concretely, the Boundary Integral Equation Method (BIEM) was used here, and the wave response calculation was demonstrated by that forces. The evaluation of habitability of the restaurant in vertical and horizontal motion was examined by the diagram proposed from our research results.
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Звіти організацій з теми "FLAT PLATE STRUCTURAL SYSTEM"

1

Freeman, Janine, Jonathan Whitmore, Leah Kaffine, Nate Blair, and Aron P. Dobos. System Advisor Model: Flat Plate Photovoltaic Performance Modeling Validation Report. Office of Scientific and Technical Information (OSTI), December 2013. http://dx.doi.org/10.2172/1115788.

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E.J. Brown, C.T. Ballinger, S.R. Burger, G.W. Charache, L.R. Danielson, D.M. DePoy, T.J. Donovan, and M. LoCascio. Measurements of Conversion Efficiency for a Flat Plate Thermophotovoltaic System Using a Photonic Cavity Test System. Office of Scientific and Technical Information (OSTI), May 2000. http://dx.doi.org/10.2172/821940.

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3

Kerber, Steve, Daniel Madrzykowski, James Dalton, and Robert Backstrom. Improving Fire Safety by Understanding the Fire Performance of Engineered Floor Systems and Providing the Fire Service with Information for Tactical Decision Making. UL Firefighter Safety Research Institute, March 2012. http://dx.doi.org/10.54206/102376/zcoq6988.

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This research project was a collaboration of several research organizations, product manufacturers and fire service representatives to examine hazards associated with residential flooring systems to improve firefighter safety. Funding for this project was provided through the National Institute of Standards and Technology’s American Recovery and Reinvestment Act Grant Program. The main objective of this study was to improve firefighter safety by increasing the level of knowledge on the response of residential flooring systems to fire. Several types (or series) of experiments were conducted and analyzed to expand the body of knowledge on the impact of fire on residential flooring systems. The results of the study have been prepared to provide tactical considerations for the fire service to enable improved decision making on the fire scene. Experiments were conducted to examine several types of floor joists including, dimensional lumber, engineered I-joists, metal plate connected wood trusses, steel C-joists, castellated I-joists and hybrid trusses. Experiments were performed at multiple scales to examine single floor system joists in a laboratory up through a full floor system in an acquired structure. Applied load, ventilation, fuel load, span and protection methods were altered to provide important information about the impact of these variables to structural stability and firefighter safety. There are several tactical considerations that result from this research that firefighters can use immediately to improve their understanding, safety and decision making when sizing up a fire in a one or two family home. This report summarizes the results from each of the experimental series and provides discussion and conclusions of the results.
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Wu, Yingjie, Selim Gunay, and Khalid Mosalam. Hybrid Simulations for the Seismic Evaluation of Resilient Highway Bridge Systems. Pacific Earthquake Engineering Research Center, University of California, Berkeley, CA, November 2020. http://dx.doi.org/10.55461/ytgv8834.

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Анотація:
Bridges often serve as key links in local and national transportation networks. Bridge closures can result in severe costs, not only in the form of repair or replacement, but also in the form of economic losses related to medium- and long-term interruption of businesses and disruption to surrounding communities. In addition, continuous functionality of bridges is very important after any seismic event for emergency response and recovery purposes. Considering the importance of these structures, the associated structural design philosophy is shifting from collapse prevention to maintaining functionality in the aftermath of moderate to strong earthquakes, referred to as “resiliency” in earthquake engineering research. Moreover, the associated construction philosophy is being modernized with the utilization of accelerated bridge construction (ABC) techniques, which strive to reduce the impact of construction on traffic, society, economy and on-site safety. This report presents two bridge systems that target the aforementioned issues. A study that combined numerical and experimental research was undertaken to characterize the seismic performance of these bridge systems. The first part of the study focuses on the structural system-level response of highway bridges that incorporate a class of innovative connecting devices called the “V-connector,”, which can be used to connect two components in a structural system, e.g., the column and the bridge deck, or the column and its foundation. This device, designed by ACII, Inc., results in an isolation surface at the connection plane via a connector rod placed in a V-shaped tube that is embedded into the concrete. Energy dissipation is provided by friction between a special washer located around the V-shaped tube and a top plate. Because of the period elongation due to the isolation layer and the limited amount of force transferred by the relatively flexible connector rod, bridge columns are protected from experiencing damage, thus leading to improved seismic behavior. The V-connector system also facilitates the ABC by allowing on-site assembly of prefabricated structural parts including those of the V-connector. A single-column, two-span highway bridge located in Northern California was used for the proof-of-concept of the proposed V-connector protective system. The V-connector was designed to result in an elastic bridge response based on nonlinear dynamic analyses of the bridge model with the V-connector. Accordingly, a one-third scale V-connector was fabricated based on a set of selected design parameters. A quasi-static cyclic test was first conducted to characterize the force-displacement relationship of the V-connector, followed by a hybrid simulation (HS) test in the longitudinal direction of the bridge to verify the intended linear elastic response of the bridge system. In the HS test, all bridge components were analytically modeled except for the V-connector, which was simulated as the experimental substructure in a specially designed and constructed test setup. Linear elastic bridge response was confirmed according to the HS results. The response of the bridge with the V-connector was compared against that of the as-built bridge without the V-connector, which experienced significant column damage. These results justified the effectiveness of this innovative device. The second part of the study presents the HS test conducted on a one-third scale two-column bridge bent with self-centering columns (broadly defined as “resilient columns” in this study) to reduce (or ultimately eliminate) any residual drifts. The comparison of the HS test with a previously conducted shaking table test on an identical bridge bent is one of the highlights of this study. The concept of resiliency was incorporated in the design of the bridge bent columns characterized by a well-balanced combination of self-centering, rocking, and energy-dissipating mechanisms. This combination is expected to lead to minimum damage and low levels of residual drifts. The ABC is achieved by utilizing precast columns and end members (cap beam and foundation) through an innovative socket connection. In order to conduct the HS test, a new hybrid simulation system (HSS) was developed, utilizing commonly available software and hardware components in most structural laboratories including: a computational platform using Matlab/Simulink [MathWorks 2015], an interface hardware/software platform dSPACE [2017], and MTS controllers and data acquisition (DAQ) system for the utilized actuators and sensors. Proper operation of the HSS was verified using a trial run without the test specimen before the actual HS test. In the conducted HS test, the two-column bridge bent was simulated as the experimental substructure while modeling the horizontal and vertical inertia masses and corresponding mass proportional damping in the computer. The same ground motions from the shaking table test, consisting of one horizontal component and the vertical component, were applied as input excitations to the equations of motion in the HS. Good matching was obtained between the shaking table and the HS test results, demonstrating the appropriateness of the defined governing equations of motion and the employed damping model, in addition to the reliability of the developed HSS with minimum simulation errors. The small residual drifts and the minimum level of structural damage at large peak drift levels demonstrated the superior seismic response of the innovative design of the bridge bent with self-centering columns. The reliability of the developed HS approach motivated performing a follow-up HS study focusing on the transverse direction of the bridge, where the entire two-span bridge deck and its abutments represented the computational substructure, while the two-column bridge bent was the physical substructure. This investigation was effective in shedding light on the system-level performance of the entire bridge system that incorporated innovative bridge bent design beyond what can be achieved via shaking table tests, which are usually limited by large-scale bridge system testing capacities.
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SHAKING TABLE TEST OF NEW LIGHT STEEL STRUCTURE SYSTEM. The Hong Kong Institute of Steel Construction, August 2022. http://dx.doi.org/10.18057/icass2020.p.342.

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The low-rise cold-formed thin-walled steel buildings have good seismic performance, and their lateral force resistance is generally provided by the pull-out parts, the wall skeleton support system, and the skin effect between the wall skeleton and the wall. However, the current cold-formed thin-walled steel residential system is difficult to meet the seismic requirements of multi-storey cold-formed thin-walled steel buildings in high intensity areas. In this paper, the thin steel brace and light steel skeleton are combined to form a wall skeleton with a new support system with "truss structure" at the top and bottom of the skeleton. A full-scale shaking table test model is designed and made, and its structural dynamic characteristics and dynamic response are studied by shaking table test. The results show that the horizontal steel strap and inclined steel strap are used to form a "flat" structure with steel columns and guide beams, and the triangular element on the "flat" structure is used to restrict the displacement of the local area at the top and bottom of the wall skeleton and improve the stiffness of the area. T1 model performs better than T2 model, and has better seismic application potential for developing multi-storey cold-formed thin-walled steel residential buildings, which can meet the engineering needs.
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EXPERIMENTAL STUDY OF HYSTERETIC BEHAVIOR OF RESILIENT PREFABRICATED STEEL FRAMES WITH AND WITHOUT INTERMEDIATE COLUMNS. The Hong Kong Institute of Steel Construction, September 2022. http://dx.doi.org/10.18057/ijasc.2022.18.3.9.

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Анотація:
The research innovatively proposed a seismic resilient structural system including a prefabricated self-centering steel frame (PSC) and an intermediate column with a friction damper (CD). The CD, installed in the mid-span beam of the PSC, was expected to provide additional stiffness and damping, The seismic performance of the newly-developed resilient structural system thus can be greatly improved. This paper stated the experimental study on the hysteretic behaviors of the newly-developed system. Comparative pseudo-dynamic tests were conducted for the validation where two systems, a PSC with CD and a PSC without CD, were tested respectively. The testing results indicated that a PSC with CD has better seismic performance for long-span structures under catastrophic earthquakes’ attack. The CD overall provided additional stiffness for requirements of earthquake fortification criteria. The friction damper, part of CD greatly improves the damping effect together with the energy-dissipation bolts. The small residual rotations of beam-column connections on the PSC subsystem provides a satisfactory self-centering mechanism. Moreover, the steel strands of the resilient structural system can maintain the elasticity even after the highest-intensity earthquake. In turn, the satisfactory seismic performance of the proposed PSC with CD structural system validated. This research developed a series of design formula for the T-plate and L-plate friction damper in the CD to guarantee the designed seismic performance of the proposed seismic resilient structural system. The theoretical hysteresis curve of the system was proposed for the future design specification.
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SIMPLIFIED MODELLING OF NOVEL NON-WELDED JOINTS FOR MODULAR STEEL BUILDINGS. The Hong Kong Institute of Steel Construction, December 2021. http://dx.doi.org/10.18057/ijasc.2021.17.4.10.

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Анотація:
Prefabricated modular steel (PFMS) construction is a more efficient and safe method of constructing a high-quality building with less waste material and labour dependency than traditional steel construction. It is indeed critical to have a precise and valuable intermodular joining system that allows for efficient load transfer, safe handling, and optimal use of modular units' strength. Thus, the purpose of this study was to develop joints using tension bolts and solid tenons welded into the gusset plate (GP). These joints ensured rigid and secure connectivity in both horizontal and vertical directions for the modular units. Using the three-dimensional (3D) finite element (FE) analysis software ABAQUS, the study investigated the nonlinear lateral structural performance of the joint and two-storey modular steel building (MSB). The solid element FE models of joints were then simplified by introducing connectors and beam elements to enhance computational efficiency. Numerous parameters indicated that column tenons were important in determining the joint's structural performance. Moreover, with a standard deviation (SD) of 0.025, the developed connectors and beam element models accurately predicted the structural behaviour of the joints. As a result of their simplification, these joints demonstrated effective load distribution, seismic performance, and ductility while reducing computational time, effort, and complexity. The validity of the FE analysis was then determined by comparing the results to the thirteen joint bending tests performed in the reference.
Стилі APA, Harvard, Vancouver, ISO та ін.
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