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Journal articles on the topic 'Concrete arches'

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Author: Grafiati

Published: 4 June 2021

Last updated: 1 August 2024

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1

Bouras, Yanni, and Zora Vrcelj. "In-plane stability of shallow concrete arches under fire." Journal of Structural Fire Engineering 11, no. 1 (January 8, 2020): 1–21. http://dx.doi.org/10.1108/jsfe-11-2018-0039.

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Purpose Concrete arch structures are commonly constructed for various civil engineering applications. Despite their frequent use, there is a lack of research on the response and performance of concrete arches when subjected to fire loading. Hence, this paper aims to investigate the response and in-plane failure modes of shallow circular concrete arches subjected to mechanical and fire loading. Design/methodology/approach This study is conducted through the development of a three-dimensional finite element (FE) model in ANSYS. The FE model is verified by comparison to a non-discretisation numerical model derived herein and the reduced modulus buckling theory, both used for the non-linear inelastic analysis of shallow concrete arches subjected to uniformly distributed radial loading and uniform temperature field. Both anti-symmetric and symmetric buckling modes are examined, with analysis of the former requiring geometric imperfection obtained by an eigenvalue buckling analysis. Findings The FE results show that anti-symmetric bifurcation buckling is the dominant failure mode in shallow concrete arches under mechanical and fire loading. Additionally, parametric studies are presented which illustrate the influence of various parameters on fire resistance time. Originality/value Fire response of concrete arches has not been reported in the open literature. The authors have previously investigated the stability of shallow concrete arches subjected to mechanical and uniform thermal loading. It was found that temperature greatly reduced the buckling loads of concrete arches. However, this study was limited to the simplifying assumptions made which include elastic material behaviour and uniform temperature loading. The present study provides a realistic insight into the fire response and stability of shallow concrete arches. The findings herein may be adopted in the fire design of shallow concrete arches.

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2

Myer, Donald B., and Abba Lichtenstein. "Washington, a City of Beautiful Bridges: Paradigms to Emulate." Transportation Research Record: Journal of the Transportation Research Board 1549, no. 1 (January 1996): 18–34. http://dx.doi.org/10.1177/0361198196154900103.

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Washington enjoys a unique international focus as a city planned for beauty. It incorporates a monumental baroque plan superimposed on a topography bordered by rivers and hills. Marble monuments and governmental structures carefully range a tree-lined formal landscape in the city's core. Fiercely protected height limits assure as a centerpiece the Capitol dome and monument-lined Mall. Conscious planning and architectural aesthetic effort have resulted in bridges that are an integral part of the nation's capital in 1996. Its structures reveal history, engineering excellence, and undeniable aesthetic import. Six bridges defend this thesis: Arlington Memorial Bridge, sculpture and arches formally carrying the Mall across the Potomac River; Francis Scott Key Bridge, high concrete arches whose silhouette are a major feature of the Potomac Palisades; William Howard Taft Bridge, engineering tour de force (largest unreinforced concrete structure in the world), carrying one of the city's main avenues across Rock Creek Park on multiple arches; Dumbarton Bridge, integrating architecture and sculpture in the parkscape while solving a street misalignment across Rock Creek Park; Connecticut Avenue Bridge over Klingle Valley, Art Deco steel-arched structure; and John Phillip Sousa Bridge, early 20th century axial connection of Pennsylvania Avenue, S.E., over the Anacostia River. Steel, concrete, arches, and trusses make up the aesthetic components of these structures, each in a unique visual context.

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3

Zhou, Yu, Zhi Lin, Lili Liu, and Jianghao Zhou. "Experimental Study on Prefabricated Steel Fiber-Reinforced Concrete Casing Arch Method for Strengthening Cracked Lining in Confined Spaces." Applied Sciences 14, no. 13 (July 8, 2024): 5941. http://dx.doi.org/10.3390/app14135941.

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Increasingly, research indicates that steel fibers can significantly enhance the engineering properties of mortar and concrete; however, few studies have examined their impact on the reinforcement of in-service tunnel linings within sleeve arch structures. In this study, a series of 1:2 scale experiments were conducted using a specialized loading device to compare the reinforcement performance of steel fiber-reinforced concrete sleeve arches and traditional reinforced concrete sleeve arches on prefabricated cracks with depths of 1/3 and 2/3 of the lining thickness. The experimental results were validated using numerical simulations. The results indicate that under the same load, when reinforcing components with 2/3 prefabricated cracks, the maximum compressive strains for steel fiber-reinforced and reinforced concrete sleeve arches were −852 με and −985 με, respectively, and the maximum deflections were 3.57 mm and 5.48 mm. Composite sleeve arches of both materials provide a certain degree of reinforcement to linings with varying damage. The reinforcement performance of steel fiber-reinforced concrete sleeve arches is superior to that of traditional reinforced concrete sleeve arches, with particularly significant reinforcement for linings with 2/3 prefabricated cracks. Numerical simulations have shown that the stress in reinforced concrete at the concentrated stress regions is 16.15%, 6.01%, 12.68%, 36.62%, and 4.82% higher than that in steel fiber-reinforced concrete, respectively, thereby validating the reliability of the experimental results. Therefore, this study recommends the application of steel fiber materials in sleeve arches to achieve superior maintenance and reinforcement, addressing cracking issues in in-service tunnel linings and thereby improving the safety and durability of these structures.

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4

Houšt’, Vladimír, Jan Eliáš, and Lumír Miča. "Shape optimization of concrete buried arches." Engineering Structures 48 (March 2013): 716–26. http://dx.doi.org/10.1016/j.engstruct.2012.11.037.

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5

Nakhaev, M. R. "Manufacturing of fiber-reinforced concrete bridge arches." Herald of Dagestan State Technical University. Technical Sciences 48, no. 3 (November 9, 2021): 99–105. http://dx.doi.org/10.21822/2073-6185-2021-48-3-99-105.

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Objective. A new method of manufacturing arches for a fiber-reinforced concrete bridge in the form of an analogue of permanent formwork is considered. Within the framework of this work, research results have been obtained that confirm the effectiveness of the system for the construction of bridge arches of various configurations.Method. The proposed developments will improve the strength characteristics of the bridge arch for small and medium bridges by optimizing the shape and size of the cross section in accordance with the change in the bending moment along the length of the arch. At the same time, reduce its metal consumption by several times.Result. The results obtained confirmed the effectiveness of electrostatic spraying of dry concrete mixture with simultaneous moisture up to moisture, which contributes to the work of capillary forces for compaction of concrete layers and the manufacture of a profiled strong shell (analogue of non-removable reinforced formwork) from reinforced fiber-reinforced concrete.Conclusion. By varying the shape and dimensions of the cross- section, the thickness of the shell and the degree of its reinforcement, as well as filling this shell with high-strength fiber-reinforced concrete, it is possible to design and manufacture bridge arches for various loads.

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6

Holzer, Stefan M., and Karen Veihelmann. "Hinges in historic concrete and masonry arches." Proceedings of the Institution of Civil Engineers - Engineering History and Heritage 168, no. 2 (May 2015): 55–64. http://dx.doi.org/10.1680/ehah.14.00019.

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7

Wang, Tao, Mark A. Bradford, and R. Ian Gilbert. "Creep Buckling of Shallow Parabolic Concrete Arches." Journal of Structural Engineering 132, no. 10 (October 2006): 1641–49. http://dx.doi.org/10.1061/(asce)0733-9445(2006)132:10(1641).

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8

M. Husain, Husain, Hisham M. Al-Hassani, and Ahmed Y. A. Zainul-Abideen. "Experimental Investigation of Composite Steel-Concrete Arches." Engineering and Technology Journal 31, no. 13 (August 1, 2013): 2393–414. http://dx.doi.org/10.30684/etj.31.13a.1.

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9

Bakht, Baidar, and Akhilesh C. Agarwal. "On distress in pipe-arches." Canadian Journal of Civil Engineering 15, no. 4 (August 1, 1988): 589–95. http://dx.doi.org/10.1139/l88-079.

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Cracking of bolt holes is a very common form of distress in pipe-arch type of soil–steel structures, the conduit walls of which are subjected to very large radial soil pressures in their lower haunches. This paper, in discussing the mechanics of this form of distress, concludes that the cracks are formed mainly due to the inability of the soil in the haunch areas to sustain the very high pressures. It also contains methods to alleviate these problems, both at the design and at the construction stage. Guidelines for proper bolt arrangements are given, and use of low-strength concrete around and under the haunches is recommended. Pouring of concrete in segments is suggested to avoid potential flotation of the pipe during construction. A case history incorporating this measure is given to demonstrate its feasibility. Key words: soil–steel structure, pipe-arch, culvert, highway bridges, bolt-hole tears.

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10

Jiang, Wei, and Da Gang Lu. "In-Plane Creep Stability Design of Concrete Filled Steel Tubular Arches Using Inverse Reliability Method." Applied Mechanics and Materials 351-352 (August 2013): 1601–4. http://dx.doi.org/10.4028/www.scientific.net/amm.351-352.1601.

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An inverse first order reliability method (FORM) is presented to solve the safety factors for the in-plane creep stability of concrete filled steel tubular (CFST) arches. In the inverse analysis, the safety factors with or without considering the time-dependent behavior of concrete are introduced into limit state equations for the in-plane stability design of CFST arches. For different target reliability indices and steel ratios, the time-independent and time-dependent safety factors are solved. The results show that the inverse FORM is of good efficiency and applicability. The target reliability indices have little effect on the safety factors for the creep stability of CFST arches. The effects of steel ratios are significant which should be considered in design. For the commonly used steel ratios of CFST arches, the in-plane safety factors for creep stability range from 1.17 to 1.43.

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11

DG, Marshal, Prakash A, Venkatasubramanian C, Muthu D, and Madhan Vignesh M. "Application of Ancient Principles of Architecture in Modern Practice." International Journal of Engineering & Technology 7, no. 3.12 (July 20, 2018): 643. http://dx.doi.org/10.14419/ijet.v7i3.12.16445.

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Before the advent of reinforced cement concrete and steel structures in the 20th century, structures like Arches, domes and vaults were being widely used worldwide. Arches were mainly used in span openings replacing beams. This was done based on the erstwhile cultural aesthetics and technical development in the prevailing construction methodologies. Nowadays, about 35 to 40 percentage of the total construction cost is being consumed by steel and concrete and therefore constructing a building without steel and concrete contributes to reduction in cost. Vaults and arches do not require concrete and steel but use only bricks and hence environment friendly. This paper deals with the design and construction procedure for structural members including the vault and buttress wall. It also highlights the reduction in cost when adopting vault method over conventional methods, in a residential building. The Vault prototype has been made with the studied design and concepts. The idea is to introduce this technique as a cost reduction approach and to preserve this ancient construction technique. Also, this method will be economical for construction of low cost houses up to two storeys.

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12

KATO, Shiro, Ryo HARA, and Shoji NAKAZAWA. "ANALYSIS OF ULTIMATE STRENGTH OF REINFORCED CONCRETE ARCHES." Journal of Structural and Construction Engineering (Transactions of AIJ) 76, no. 668 (2011): 1795–802. http://dx.doi.org/10.3130/aijs.76.1795.

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13

Franciosi, C. "Heyman's assumption for reinforced concrete arches re-examined." International Journal of Mechanical Sciences 27, no. 4 (January 1985): 199–205. http://dx.doi.org/10.1016/0020-7403(85)90079-7.

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14

Luo, Kai, Yong Lin Pi, Wei Gao, and Mark A. Bradford. "Finite Element Model for Analysis of Time-Dependent Behaviour of Concrete-Filled Steel Tubular Arches." Applied Mechanics and Materials 553 (May 2014): 606–11. http://dx.doi.org/10.4028/www.scientific.net/amm.553.606.

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This paper presents a finite element model for the linear and nonlinear analysis of time-dependent behaviour of concrete-filled steel tubular (CFST) arches. It is known when a CFST arch is subjected to a sustained load, the visco-elastic effects of creep in the concrete core will result in significant increases of the deformations and internal forces in the long-term. In this paper, a finite element model is developed using the age-adjusted effective modulus method to describe the creep behaviour of the concrete core. The finite element results of long-term displacement and stress redistribution agree very well with their analytical counterparts. The finite element model is then used to compare the linear and nonlinear results for the long-term behaviour of shallow CFST arches. It is demonstrated that the linear analysis underestimates the long-term deformations and internal force significantly and that to predict the time-dependent behaviour shallow CFST arches accurately, the nonlinear analysis is essential.

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15

Kudaibergenov, N. B., K. Y. Astankov, I. G. Ovchinnikov, and T. Sh Abilmazhenov. "THE USE OF PIPE CONCRETE IN AN ARCHED BRIDGE CONSTRUCTION." Bulletin of Kazakh Leading Academy of Architecture and Construction 92, no. 2 (June 30, 2024): 91–107. http://dx.doi.org/10.51488/1680-080x/2024.2-07.

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The experience of using tubular concrete structures in bridge construction is considered on the example of facilities built over the past 30 years in the People's Republic of China. The features of the construction of a bridge over the Xun River in Pingnan County, Guangxi Province, which currently has a record span of 575 m, are considered. An overview of outstanding facilities built using large-span lattice arches made of tubular concrete elements, working mainly on off-center compression, is performed. Various methods of mounting spans of steel-reinforced concrete arch bridges, advantages and disadvantages of each method are considered. The technology of concreting pipes is considered in detail. The designs and methods of construction of facilities using large-span arches of solid cross section with tightening for the construction of bridges with spans of 46 and 96 meters are considered. Modern research in the field of the work of bendable arches is considered in comparison with the model considering the work of a tubular concrete element as an out-of-center compressed column, which in the future can ensure more efficient use of material properties in design. The prospects of using tubular concrete structures for the construction of small bridges are indicated, which is especially important in areas remote from construction industry enterprises with an underdeveloped highway network.

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16

Surianinov, M. G., S. P. Neutov, I. B. Korneieva, and D. O. Kirichenko. "EXPERIMENTAL AND NUMERICAL STUDIES OF THE CARRYING CAPACITY OF A CIRCULAR ARCH UNDER HYDROSTATIC PRESSURE." Bulletin of Odessa State Academy of Civil Engineering and Architecture, no. 80 (September 3, 2020): 50–58. http://dx.doi.org/10.31650/2415-377x-2020-80-50-58.

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Abstract. The results of a numerical and experimental study of the bearing capacity of a circular concrete arch loaded with hydrostatic pressure are presented. To implement the specified scheme of loading arches, the authors made a stand that allows you to determine the bearing capacity of models of concrete, reinforced concrete, steel-fiber concrete and wooden arches. For experiments, a double-hinged arch was made of concrete С16/20. At the same time, samples-cubes with an edge size of 10 cm were prepared from the same batch, which were tested for compression in accordance with the current regulatory documents. During the tests, the load was applied in small steps for a detailed study of the arch deformation process. At each stage, the readings of the measuring devices, dial indicators and strain gauges, were recorded. For computer modeling and numerical analysis by the finite element method, the software LIRA-SAPR was used. It is noted that, despite the widespread use of arched structures made of reinforced concrete, there are still no generalizing conclusions and recommendations for determining their actual bearing capacity and strengthening methods in the domestic literature. During the tests, a breaking load of 600 kN was achieved, that is, the bearing capacity of the arch, determined experimentally, was 0.845 of the value obtained by numerical analysis, although, as a rule, in our experimental studies of other structures, the theoretical value of the bearing capacity turned out to be lower than the actual one. In this case, the destruction occurred in the support part, i.e. at the junction of the support (heel) and the arch, which is explained by the lack of reinforcement of the heel. The results of experimental and numerical studies of a concrete arch indicate that under this loading scheme, almost equal stresses arise in all cross sections of the arch. Obviously, the bearing capacity of the structure can be increased due to the uniform dispersed reinforcement of the arch and reinforcement of the heel with bar reinforcement, which determines the direction of our further research.

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17

Ishchenko, A. V., and D. A. Pogodin. "Calculation of reinforced concrete arches on stability when creeping." IOP Conference Series: Materials Science and Engineering 698 (December 18, 2019): 022086. http://dx.doi.org/10.1088/1757-899x/698/2/022086.

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18

Cahill, Paul, Eoin Allen, Vikram Pakrashi, and Alan O’Connor. "Horizontal Loading Effects of Fresh Concrete on Precast Arches." Journal of Bridge Engineering 18, no. 8 (August 2013): 779–89. http://dx.doi.org/10.1061/(asce)be.1943-5592.0000409.

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19

Abdulhameed, Ali A., and AbdulMuttalib I. Said. "Experimental Investigation of the Behavior of Self-Form Segmental Concrete Masonry Arches." Fibers 7, no. 7 (July 2, 2019): 58. http://dx.doi.org/10.3390/fib7070058.

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This research aims to introduce a new technique—off-site and self-form segmental concrete masonry arches fabrication, without the need of construction formwork or centering. The innovative construction method in the current study encompasses two construction materials forms the self-form masonry arches, wedge-shape plain concrete voussoirs, and carbon fiber-reinforced polymer (CFRP) composites. The employment of CFRP fabrics was for two main reasons: bonding the voussoirs and forming the masonry arches. In addition, CFRP proved to be efficient for strengthening the extrados of the arch rings under service loadings. An experimental test was conducted on four sophisticated masonry arch specimens. The research parameters were the Keystone thickness and the strengthening of the self-form arch ring at the intrados. The major test finding was that the use of thicker Keystone alters the behavior of the self-form arch and considerably increases the load carrying capacity by 79%. Partial strengthening of the intrados with CFRP fabrics of typical arch ring Keystone resulted considerable increase in the debonding load of fabrication CFRP sheets by 81%, increase in the localized crushing load by 13% and considerably increase voussoir sliding load by 107%.

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20

Alexandru, Dima, and Răcănel Ionuţ Radu. "Design of the New Arch Bridge at Mioveni." Romanian Journal of Transport Infrastructure 3, no. 1 (July 1, 2014): 12–22. http://dx.doi.org/10.1515/rjti-2015-0020.

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Abstract Road bridges with steel arches are used efficiently for medium and large spans. These solutions show advantages determined by the arches geometry, by the number and distributions of hangers and by the form and type of the arches bracing system. The appearance of the welding as standard connection procedure for steel bridges, for road bridge decks two solutions are mainly used: - the solution with a concrete slab acting together with the stringers and cross beams (the composite solution); - the solution with orthotropic deck (the orthotropic deck consists in a network formed by the continuous longitudinal stiffeners and cross beams connected at the upper part by a steel plate). In this paper a comparative study of the strength and fatigue checks performed on the new road bridge over river Argeşel near Mioveni in Argeş county is presented. The results are obtained using the Romanian standards STAS 1844-75 and SR 1911-1998 and the European norms SR EN 1990, SR EN 1993 and SR EN 1994. The deck was designed with two parallel steel arches, which are sustaining through vertical hangers a concrete slab connected with steel girders at the way level. The aim of the paper is to outcome the safety factors obtained from checks performed on steel hangers using the Romanian standards with respect with those obtained using Eurocodes.

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21

Tian, Zhongchu, Ye Dai, Tao Peng, Zujun Zhang, Yue Cai, and Binlin Xu. "Laminated Steel Fiber-Reinforced Concrete Hingeless Arch: Research on Damage Evolution Laws." Applied Sciences 14, no. 12 (June 8, 2024): 5015. http://dx.doi.org/10.3390/app14125015.

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In the context of reinforced concrete (RC) arch bridges, while the incorporation of full sections of steel fibers can enhance the bridge’s toughness, cracking resilience, and bearing capacity, achieving an optimal balance between structural performance and economic viability in this manner remains challenging. This article introduces a novel computational approach—the distributed steel fiber concrete (LSFRC) arch—which considers the spatial distribution of damage in RC arches. The static performance of SFRC elements and LSFRC beams was compared and analyzed using the concrete plastic damage model (CDP) in ABAQUS software. This study validated the rationality of the model and investigated the impact of varying steel fiber volume ratios and steel fiber layer heights on the damage evolution of LSFRC arches. The results of this study demonstrate that the cracking load and bearing capacity of an RC arch can be effectively enhanced through the addition of steel fibers to a local area under static loading. Furthermore, the deflection and damage to the arch waist and arch roof can be significantly reduced. Furthermore, the incorporation of steel fibers at an increased volume rate and at a greater height within the doped section can effectively slow the rate of damage evolution within the section. This results in the inhibition of crack extensions and in an improvement in the ductility and reliability of the damage stage. The LSFRC arches offer superior economic and practical advantages over their full cross-section doped steel fiber (FRC) counterparts. This study offers novel insights and methodological guidance for the design and implementation of concrete arch bridges.

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22

Pi, Yong-Lin, Changyong Liu, Mark Andrew Bradford, and Sumei Zhang. "In-plane strength of concrete-filled steel tubular circular arches." Journal of Constructional Steel Research 69, no. 1 (February 2012): 77–94. http://dx.doi.org/10.1016/j.jcsr.2011.08.008.

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23

Bouras, Yanni, and Zora Vrcelj. "Thermal in-plane stability of concrete-filled steel tubular arches." International Journal of Mechanical Sciences 163 (November 2019): 105130. http://dx.doi.org/10.1016/j.ijmecsci.2019.105130.

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24

Baxter, Daniel J., and Toader A. Balan. "Design of the Fulton Road Bridge Precast Segmental Concrete Arches." Journal of Bridge Engineering 13, no. 5 (September 2008): 476–82. http://dx.doi.org/10.1061/(asce)1084-0702(2008)13:5(476).

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25

Jiang, Wei, and Dagang Lü. "In-plane creep buckling of concrete-filled steel tubular arches." Transactions of Tianjin University 20, no. 3 (June 2014): 168–73. http://dx.doi.org/10.1007/s12209-014-2136-7.

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26

Zhang, Xu, Peng Wang, Meirong Jiang, Hualin Fan, Jiannan Zhou, Wanxin Li, Lu Dong, Hailong Chen, and Fengnian Jin. "CFRP strengthening reinforced concrete arches: Strengthening methods and experimental studies." Composite Structures 131 (November 2015): 852–67. http://dx.doi.org/10.1016/j.compstruct.2015.06.034.

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27

Yousefpour, Hossein, Jose M. Gallardo, Todd A. Helwig, and Oguzhan Bayrak. "Innovative precast, prestressed concrete network arches: Elastic response during construction." Structural Concrete 18, no. 5 (May 7, 2017): 768–80. http://dx.doi.org/10.1002/suco.201600176.

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28

Wu, Jianqin, Jiannan Zhou, Ying Xu, Xinli Kong, Peng Wang, Bo Wang, Chengjie Zhao, Fengnian Jin, Wenye Wang, and Fengxia Wang. "Dynamic Responses of Blast-Loaded Shallow Buried Concrete Arches Strengthened with BFRP Bars." Materials 15, no. 2 (January 11, 2022): 535. http://dx.doi.org/10.3390/ma15020535.

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This paper proposes a prefabricated basalt fiber reinforced polymer (BFRP) bars reinforcement of a concrete arch structure with superior performance in the field of protection engineering. To study the anti-blast performance of the shallow-buried BFRP bars concrete arch (BBCA), a multi-parameter comparative analysis was conducted employing the LS-DYNA numerical method, which was verified by the results of the field explosion experiments. By analyzing the pressure, displacement, acceleration of the arch, and the strain of the BFRP bars, the dynamic response of the arch was obtained. This study showed that BFRP bars could significantly optimize the dynamic responses of blast-loaded concrete arches. The damage of exploded BBCA was divided into five levels: no damage, slight damage, obvious damage, severe damage, and collapse. BFRP bars could effectively mitigate the degree of damage of shallow-buried underground protective arch structures under the explosive loads. According to the research results, it was feasible for BFRP bars to be used in the construction of shallow buried concrete protective arch structures, especially in the coastal environments.

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29

Hurd, M. K. "Multiple Precast Concrete Arches Replace Old Garfield Park Bridge in Chicago." PCI Journal 42, no. 2 (March 1, 1997): 14–19. http://dx.doi.org/10.15554/pcij.03011997.14.19.

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30

Krauthammer, T., and R. D. Puglisi. "Simplified analysis of buried reinforced concrete arches under simulated nuclear loads." Computers & Structures 43, no. 6 (June 1992): 1029–39. http://dx.doi.org/10.1016/0045-7949(92)90003-i.

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31

Liu, Changyong, Qing Hu, Yuyin Wang, and Sumei Zhang. "In-Plane Stability of Concrete-Filled Steel Tubular Parabolic Truss Arches." International Journal of Steel Structures 18, no. 4 (July 18, 2018): 1306–17. http://dx.doi.org/10.1007/s13296-018-0122-y.

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32

Dagher, Habib J., Daniel J. Bannon, William G. Davids, Roberto A. Lopez-Anido, Edwin Nagy, and Keenan Goslin. "Bending behavior of concrete-filled tubular FRP arches for bridge structures." Construction and Building Materials 37 (December 2012): 432–39. http://dx.doi.org/10.1016/j.conbuildmat.2012.07.067.

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33

Dang, Kien Van, Hung Trong Vo, Hao Doan Ngo, and Huy Xuan Tran. "An experimental study on the use of fly ash for making concrete lagging of SVP steel arches in underground coal mines in Quang Ninh area." Journal of Mining and Earth Sciences 63, no. 3a (July 31, 2022): 103–11. http://dx.doi.org/10.46326/jmes.2022.63(3a).12.

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In 2020, Vietnam has 25 thermal power plants in operation, emitting a total amount of fly ash and coal bottom ash of about 13 million tons/year. It makes increasing the costs of landfill space, and negatively affect the environment. The major goal of this study is to recommend an optimal amount of thermal power plant fly ash to be added to the concrete mix to create concrete lagging for the SVP steel arches of the underground coal mine in the Quang Ninh region. In order to lower the cost of drift support and improve the efficiency of environmental protection, fly ash is used in this study to make concrete lagging in place of cement to the extent of 30%. This study also demonstrates a recent development in the use of novel materials to construct rock/soil supports for underground mines in Vietnam. use of fly ash in concrete as a partial replacement for cement is more important today. The comparison of strength properties of concrete laggings by experimental study at the Laboratory of underground construction between two concrete lagging types at Hanoi University of Mining and Geology (HUMG) will show the benefits in terms of the strength of concrete lagging using fly ash. The paper also presents the results of an experimental study on using fly ash for making concrete lagging at the Laboratory. The comparison of the drift support using concrete laggings in SVP steel arches fly ash-made products and conventional underground mining support will aid in demonstrating the benefits of employing fly ash. From the study's findings, it can be inferred that fly ash can substitute cement in lower classes of construction concrete such as M200.

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34

Ficek, Paweł, Krzysztof Kuczowicz, Szymon Wróbel, and Marek Rotkegel. "Load Capacity of steel arches with shotcrete coating." E3S Web of Conferences 133 (2019): 02006. http://dx.doi.org/10.1051/e3sconf/201913302006.

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The shotcrete technology (application of a concrete layer) is widely used in coal mines. The applied layer of shotcrete to the underground workings support, changes the load capacity of the entire supporting system (and its elements). The coating of shotcrete is several times cheaper, faster and safer compared to the traditional reconstruction of the roadways - replacement of the supports. Appropriate selection of shotcrete parameters will allow applying shotcrete to places previously dedicated for reconstruction, and thus reduce the financial resources consumed in the mines for the reconstruction of underground workings. The article presents a method of testing steel arch supports covered with shotcrete, a station for weighting support section and a test plan.

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35

Răcănel, Ionuţ Radu, Marian Daraban, and Răzvan Stănescu. "Some Investigations Performed for the Bridge Over Jiu at Aninoasa." Romanian Journal of Transport Infrastructure 1, no. 1 (December 1, 2012): 50–59. http://dx.doi.org/10.1515/rjti-2015-0005.

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Abstract The carrying structure of the bridge over the Jiu River at Aninoasa consists in two parallel concrete arches with variable height of the cross section, sustaining a concrete deck through vertical concrete hangers. In the time period passed since the bridge was erected, some structural elements shown damages. In order to establish the technical state of the bridge, a technical appraisement was performed and according to this, the most exposed elements to the risk of failure are the hangers. The purpose of this paper is to present briefly both, the method used to test the actual bridge carrying capacity in situ and the finite element model developed for the static and dynamic analysis of the structure. In order to estimate the state of the structural elements, two ways were followed. In the first stage, a test project was carried out and in the second stage, a complete 3D finite element model was developed to analyze the bridge structure. The test project has foreseen the loading of the bridge by heavy unloaded trucks, disposed in some positions on the deck and the measurements of the deck and arches displacements. The positions of the trucks were established in order to obtain the maximum values both for arches transverse displacements and vertical displacements of the deck. Using electro-resistive transducers the hangers elongations and strains values on their cross section were also measured. These measured values were compared with those obtained from the numerical calculations performed by using the complete finite element model. By means of the finite element model, also the response of the structure following the dynamic action of vehicles was investigated.

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El Bouanani, Latifa, Khadija Baba, Ghizlane Ardouz, and Fatima Ezzahraa Latifi. "Parametric Study of a Soil Erosion Control Technique: Concrete Lozenges Channels." Civil Engineering Journal 8, no. 9 (September 1, 2022): 1879–89. http://dx.doi.org/10.28991/cej-2022-08-09-09.

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A new technique, "the concrete lozenges channels" is described in this paper. It is an erosion control measure to attenuate the water soil loss quantity to a tolerable level. These are open inclined channels that form lozenges on the slope. In fact, they drain rainfall, runoff, and sediments alongside the slope into the ditch. Using the RUSLE erosion model for erosion assessment, the parameters that had the most influence on the percentage decrease of the soil erodibility are discussed. A comparison between techniques already used, that is, the concrete arches and the concrete lozenge channels proposed in this paper, makes it possible to mention the shortcomings and the strengths of each technique. In fact, the percentage decrease in erosion soil loss is about 42% for 2 arches and is about 49% for 2 lozenges. If the number of channels present on the slope increases, the area exposed to erosion decreases. By comparing the study case, the exposed area for one lozenge is less by 39% to 68% than the exposed area for one arch. The total perimeter lengths are comparable. In this article, a parametric study is undertaken to define the optimum dimensions and optimum number of concrete inclined channels. The ditch section and the inclined channel section are determining factors in the lozenge sizing. Doi: 10.28991/CEJ-2022-08-09-09 Full Text: PDF

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Prekop, Lubomir. "Modeling the Load Test of Vertical Resistance of Pile." Key Engineering Materials 738 (June 2017): 310–18. http://dx.doi.org/10.4028/www.scientific.net/kem.738.310.

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This paper deals with the modeling of the load test of vertical resistance of reinforced concrete piles. The pile is a part of a group of piles with reinforced concrete heads. The head is pressed with steel arches of a bridge on highway Jablonov - Studenec. Pile model is created in ANSYS with several models of foundation having properties found out from geotechnical survey. Finally some crucial results obtained from computer models are presented and compared with these obtained from experiment.

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Morrison, Timothy D. "Long-Span Deep-Corrugated Structural Plate Arches with Encased-Concrete Composite Ribs." Transportation Research Record: Journal of the Transportation Research Board 1736, no. 1 (January 2000): 81–93. http://dx.doi.org/10.3141/1736-11.

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The design and construction of two long-span reinforced deep-corrugated structural plate arch culverts are described. The arch structures have maximum spans of 23.3 and 19.0 m. They were constructed on the Alaska Highway in northern British Columbia, Canada, during the fall of 1998. The 23.3-m-span arch is the largest of its kind in the world. Both structures are intermittently reinforced using a system of encased-concrete stiffeners. This system employs concrete pumped into the cavities formed by opposing deep-corrugated steel plates fitted with shear studs. The reinforcement for the 19.0-m structure was terminated at a location above the springline of the arch. The reinforcement for the 23.3-m-span arch extended to the top of the foundation. The arches were designed in accordance with the provisions of the Ontario Highway Bridge Design Code and the new Canadian Highway Bridge Design Code for Buried Structures. They were also reviewed using a nonlinear frame analysis (Structural Optimization Design and Analysis, or SODA) and a finite-element analysis (Nonlinear Soil-Structure Interaction Program, or NLSSIP). The deflected shapes of the two arches were monitored by instruments in the field during the construction and backfilling operation. The design results and field-measured deflections are evaluated.

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Banitalebi Dehkordi, Afsaneh, and Kaveh Kumarci. "Cellular Automata Approach In Optimum Shape Of Concrete Arches Under Dynamic Loads." Journal of Mathematics and Computer Science 04, no. 04 (December 30, 2012): 554–69. http://dx.doi.org/10.22436/jmcs.04.04.06.

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Shaima Sabri Ali et al.,, Shaima Sabri Ali et al ,. "Effects of KYE Properties, Shape and Locations on Reinforced Concrete Arches Behavior." International Journal of Civil, Structural, Environmental and Infrastructure Engineering Research and Development 8, no. 3 (2018): 1–6. http://dx.doi.org/10.24247/ijcseierdjun20181.

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Xia, Qilong, Yuyin Wang, Jasmin Jelovica, Changyong Liu, and Dawei Sun. "Experimental study on corrugated steel–concrete composite semicircular arches under midspan loading." Structures 38 (April 2022): 1137–50. http://dx.doi.org/10.1016/j.istruc.2022.02.038.

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Wang, Peng, Meirong Jiang, Jiannan Zhou, Bo Wang, Jiang Feng, Hailong Chen, Hualin Fan, and Fengnian Jin. "Spalling in concrete arches subjected to shock wave and CFRP strengthening effect." Tunnelling and Underground Space Technology 74 (April 2018): 10–19. http://dx.doi.org/10.1016/j.tust.2018.01.009.

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Shrestha, K. M., Bao-chun Chen, and Yong-feng Chen. "State of the art of creep of concrete filled steel tubular arches." KSCE Journal of Civil Engineering 15, no. 1 (December 11, 2010): 145–51. http://dx.doi.org/10.1007/s12205-011-0734-7.

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Barbashev, Nikita. "CALCULATION OF DYNAMIC LOAD IMPACT ON REINFORCED CONCRETE ARCHES IN THE GROUND." Vestnik MGSU, no. 1 (January 2016): 35–43. http://dx.doi.org/10.22227/1997-0935.2016.1.35-43.

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Wang, Qi, Ying-cheng Luan, Bei Jiang, Shu-cai Li, and Heng-chang Yu. "Mechanical behaviour analysis and support system field experiment of confined concrete arches." Journal of Central South University 26, no. 4 (April 2019): 970–83. http://dx.doi.org/10.1007/s11771-019-4064-0.

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Song, Xinyu, Zhengyuan Yue, Erhu Zheng, Jiannan Zhou, Ying Xu, Xinli Kong, Bo Wang, and Yinzhi Zhou. "Numerical simulation on the load-bearing capacity of CFRP-strengthened concrete arches." Case Studies in Construction Materials 20 (July 2024): e03137. http://dx.doi.org/10.1016/j.cscm.2024.e03137.

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Pouraminian, Majid, and Somayyeh Pourbakhshian. "Multi-criteria shape optimization of open-spandrel concrete arch bridges: Pareto front development and decision-making." World Journal of Engineering 16, no. 5 (October 7, 2019): 670–80. http://dx.doi.org/10.1108/wje-04-2019-0104.

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Purpose This paper aims to study the shape of the concrete arched bridge by particle swarm optimization algorithm. Design/methodology/approach Finite element model of open-spandrel concrete arch bridges was constructed using a number of parameters. Design variables of optimization problem include height of skewback abutment, height of arch crown, position of crown with respect to global axes and left and right radius of up and down arches. After parametric modeling of bridge geometry and application of multi-objective particle swarm optimization, the shape optimization of bridge arch was determined. The concrete volume used in bridge substructure construction and maximum principal tensile stress of concrete arch body was adopted as two objective functions in this study. The optimization problem aims to minimize the two objective functions. Geometric and stress constraints are also included in the problem. Findings Based on the results presented in the paper, the Pareto front is generated which helps the decision-maker or designer to pick the compromise solution from among 20 optimum designs according to their subjective preferences or engineering judgment, respectively. Moreover, to help the decision-maker, the two multiple objective decision-making methods were used for selection of the best solution from among nondominated solutions. Originality/value This research aims to solve an interesting optimization problem in structural engineering. Optimization of arch bridges structure was done for reducing construction costs and increasing safety for the first time.

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Rajeev, Shilpa, Deepak John Peter, and M. V. Varkey. "Study of Concrete Filled Steel Tubular Arch Bridge: A Review." Applied Mechanics and Materials 857 (November 2016): 261–66. http://dx.doi.org/10.4028/www.scientific.net/amm.857.261.

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In many developed countries, concrete filled steel tubular arch bridges are being constructed for roads and railway lines. The CFST arch bridges use steel tubular arches with self consolidating concrete pumped inside and the steel tube provides confinement to the concrete infill. Also, these concrete filled steel tubes have enhanced ductility, better seismic performance, aesthetic quality, lesser consumption of materials and self weight, speedy construction and small vibrations according to studies conducted earlier. Due to the presence of steel tube, local buckling of arch is delayed and reduces the ingress of moisture when exposed to harsh environmental conditions. This paper aims to find the seismic performance of CFST arch bridges in terms of seismic output and deformation when compared to conventional bridges being currently constructed.

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Bencardino, Francesco, and Roberta Curto. "Seismic behaviour assessment and rehabilitation of a masonry three‐arched bridge." ce/papers 6, no. 5 (September 2023): 959–68. http://dx.doi.org/10.1002/cepa.2116.

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AbstractMany existing historical masonry arch bridges used in the road and railway networks are still in service. However, most of them show a structural performance deficit due to several factors. This study deals with the seismic behavior assessment of an existing masonry three‐arched railway bridge through a nonlinear, non‐adaptive static analysis carried out by a three‐dimensional Finite Element model. Input data were collected from a variety of sources. The structural analysis showed a risk index that was not in compliance with the limit values suggested by current European Standards. In order to improve the structural reliability of the masonry arch railway bridge, a traditional structural rehabilitation was proposed and designed. The bottom faces of the arches and the piles of the masonry bridge were strengthened by reinforced concrete thin slabs and reinforced concrete jackets, respectively, all adequately connected to the existing structure by using steel bar connectors. Finally, a nonlinear analysis of the strengthened structure showed that the new risk index satisfied the seismic vulnerability verification. The proposed structural rehabilitation using traditional techniques appears to be a viable but not unique solution to improving structural reliability.

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Mei, Yuchun, Xiuming Li, Weiteng Li, Ning Yang, Yuhua Zhang, and Shuo Zhang. "Bearing properties and influence laws of concrete-filled steel tubular arches for underground mining roadway support." Science and Engineering of Composite Materials 27, no. 1 (March 26, 2020): 73–88. http://dx.doi.org/10.1515/secm-2020-0008.

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AbstractThe concrete-filled steel tubular (CFST) arch is a new high-strength support form for a mine roadway in deep/soft rock stratum; however, the bearing characteristics have not been clearly elucidated for scientifically guiding field applications. Numerical simulation tests with 15 schemes shaped as a ‘half circle with two straight legs’ and 10 schemes shaped as a circle were conducted, and the main responses of the numerical model were verified by performing the laboratory tests to evaluate the basic CFST structures and global CFST arches. The bearing and failure behaviors of the CFST arches were studied, and the influence laws, in terms of the arch shape, size and lateral pressure coefficient λ, were further investigated. The results show that the bearing capacity of a circular arch is significantly higher than that of a straight-leg arch under a uniform load. Furthermore, the bearing capacity of the circular arch decreases considerably with the increase in the arch size or λ. In addition, the bearing capacity of a straight-leg arch decreases with the increase in the leg height and arch size; however, it first increases and later decreases with the increase in λ. The failure modes of all the arches correspond to the instability at the extreme point caused by the strength deterioration, except in the case of a circular arch under a uniform pressure, the failure mode of which corresponds to the instability at the branch points. Finally, the recommendations for the field practice are proposed and verified.

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