Relevant bibliographies by topics / Beam bridge

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  1. Journal articles

Academic literature on the topic 'Beam bridge'

Author: Grafiati
Published: 4 June 2021
Last updated: 5 May 2022

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Journal articles on the topic "Beam bridge"

1

Svoboda, Adam, and Ladislav Klusáček. "Possibility of Increasing the Load Bearing Capacity of Parapet Bridge Structures." Solid State Phenomena 272 (February 2018): 319–24. http://dx.doi.org/10.4028/www.scientific.net/ssp.272.319.

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Post-tensioning is a suitable, reliable and durable method for strengthening existing reinforced concrete bridge structures. The high efficiency of post-tensioning can be seen on many implemented applications for bridge reconstructions worldwide. There are still several thousands of beam and slab bridges the load capacity of which no longer meets the demanding transport conditions. The oldest reinforced concrete beam bridges, from 1905-1915, are designed according to the Austrian Ministry of Railways Bridge Standard of 1904 when the largest load to be considered was the 18-tonne road steamroller. These bridges are not dimensioned for the currently valid traffic load values. The paper deals with the strengthening of the parapet beam bridges from the period of 1905-1930. These bridges have two main beams pulled over the bridge deck which is supported by cross beams. The cross beams connect the two main beams, forming a half-frame in the transverse direction which provides spatial rigidity of the structure. The spans of these bridges are usually in the range of 15 to 25 m.
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2

Yang, Ya Xun, and Wei Ya Fan. "Single Beam Load Test of Continuous Beam." Applied Mechanics and Materials 578-579 (July 2014): 801–4. http://dx.doi.org/10.4028/www.scientific.net/amm.578-579.801.

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GengYuHe bridge was a prestressed concrete continuous box girder bridge,based on the static load test of single beam bridges compared with theoretical calculation value,check whether the actual control section stress of the bridge are in conformity with the design requirements,and give advice.
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3

Liu, Chun Lei, and Su Juan Dai. "The Best Position to Determine the Hinge in the Cantilever Bridge." Applied Mechanics and Materials 578-579 (July 2014): 814–17. http://dx.doi.org/10.4028/www.scientific.net/amm.578-579.814.

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The simple-supported beam bridge is a common structure form widely used in small and medium span bridges. When the span is longer, the maximum bending moment is accordingly bigger. The maximum positive and negative bending moment numerical of beam decreases obviously because of cantilever bridge with cantilever beams to reduce the amount of materials. This article analyzes the current commonly used cantilever bridge with large span. The two-span cantilever bridge is analyzed under various loads about the internal force according to the condition of the absolute value of the maximum positive and negative bending moment being equal. It carries on the contrast and analysis about simple-supported beam bridges and obtains the best location of the hinge in the cantilever bridge. Moreover, it provides some reference for the optimum design of similar bridges and projects.
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4

Jiao, CY, MZ Cheng, H. Cheng, X. Xiao, and YF Wu. "Comparative study of numerical simulation methods for seismic pounding of adjacent girder of curved girder bridges." Journal of Physics: Conference Series 2158, no. 1 (2022): 012027. http://dx.doi.org/10.1088/1742-6596/2158/1/012027.

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Abstract Under seismic action, non-uniform collision will occur between the main beams of curved beam bridge, which may lead to local damage of front beam or rear beam. At present, the research on collision effect is mainly based on straight beam bridge, and there is still a lack of relevant research on seismic collision of curved beam bridge. Taking two adjacent typical curved bridges as examples, this paper establishes contact elements (linear elastic model, Kelvin model and Hertz model) and solid elements (three-dimensional contact friction model) which can fully reflect the physical characteristics of seismic collision of curved bridges. By comparing the numerical simulation methods of seismic collision, the advantages and disadvantages of the existing numerical simulation methods in the seismic response analysis of curved bridges are evaluated. The results show that the calculation results of Kelvin model and three-dimensional contact friction model have the least error and high calculation efficiency, and are suitable for the seismic analysis of curved beam bridges.
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5

Huang, Jianwei. "Shear live load analysis of NEXT beam bridges for accelerated bridge construction." Bridge Structures 17, no. 3-4 (2021): 111–19. http://dx.doi.org/10.3233/brs-210191.

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Using precast concrete elements in bridge structures has emerged as an economic and durable solution to enhance the sustainability of bridges. The northeast extreme tee (NEXT) beams were recently developed for accelerated bridge construction by the Precast/Prestressed Concrete Institute (PCI). To date, several studies on the live load distribution factor (LLDF) for moment in NEXT F beam bridges have been reported. However, the LLDFs for shear in NEXT F beam bridges are still unclear. In this paper, the lateral distributions of live load shear in NEXT F beam bridges were examined through a comprehensive parametric study. The parameters covered in this study included bridge section, span length, beam section, number of beams, and number of lanes loaded. A validated finite element (FE) modeling technique was employed to analyze the shear behavior of NEXT F beam bridges under the AASHTO HL-93 loading and to determine the LLDFs for shear in NEXT beam bridges. A method for computing the FE-LLDF for shear was proposed for NEXT beam bridges. Results from this study showed that the FE-LLDFs have a similar trend as the AASHTO LFRD-LLDFs. However, it was observed that some LRFD-LLDFs are lower than the FE-LLDFs by up to 14.1%, which implied using the LRFD-LLDFs for shear could result in an unsafe shear design for NEXT beam bridges. It is recommended that a factor of 1.2 be applied to the LRFD-LLDF for shear in NEXT F beam bridges for structural safety and design simplicity.
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6

Huang, De Yu. "Development and Construction Techniques of Foreign PC Continuous Beam." Advanced Materials Research 671-674 (March 2013): 1729–31. http://dx.doi.org/10.4028/www.scientific.net/amr.671-674.1729.

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In construction of medium span, small span and commonly long span bridges, the prestressed concrete continuous beams are playing an important role and the vistas of development of the bridges is vast. The design , construction and new material application remain to be further improved, through great achievements has been made in China in the construction of the PC continuous beam bridges, the global techniques of the bridges in the country in the recent several decades. Through the study of prestressed concrete continuous beam bridge construction technology development trend and research, understand the international bridge of advanced design concepts and construction technology of foreign engineering project bidding, formulates the reasonable construction plan, strengthen the domestic enterprises to expand overseas bridge construction market competitive force, and provide useful reference.
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7

Ding, Yanchao, Zhongfu Xiang, Yayong Li, Xuesong Zhang, and Yin Zhou. "Mechanical System Evolution and Reasonable Structural Design Parameters of Long-Span Deck-Type Beam-Arch Composite Rigid Frame Bridge." International Journal of Design & Nature and Ecodynamics 15, no. 6 (2020): 885–93. http://dx.doi.org/10.18280/ijdne.150614.

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Long-span deck-type beam-arch composite rigid frame (BACRF) bridge fully integrates the merits of arch bridges and beam bridges, and overcomes the cracking and deflection problems of continuous rigid frame bridges. As a perfect combination of beam bridges and arch bridges, the long-span deck-type BACRF bridge boasts a light structure, a strong bearing capacity, and a powerful spanning capability. From the perspective of mechanical system evolution, this paper theoretically analyzes the structural mechanics of the beam-arch composite system, establishes a half-bridge model for BACRF bridge, and derives the expressions of the internal force and displacement of the beam-arch composite system. Next, finite-element analysis was conducted to analyze how the variation of a single parameter, e.g., rise-span ratio, open web ratio, and side-to-middle span ratio, affects midspan displacement, arch-beam junction displacement, main beam bending moment, and main arch axial force. Finally, the calculation formula for deflection-span ratio of BACRF bridge was proposed based on the maximum hyperplane method. The research results provide a reference for the structural design of similar bridges.
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8

You, Qi Yong. "Finite Element Analysis of Continuous Curved Box-Girder Bridge." Applied Mechanics and Materials 454 (October 2013): 183–86. http://dx.doi.org/10.4028/www.scientific.net/amm.454.183.

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The calculations of plan truss and beam-girder method on straight bridge were analyzed, which determined right beam-girder method calculation model of the box-girder bridge. Based on this model, the different radius continuous curved box-girder bridges were simulated by finite element, and then the internal forces of the bridge were obtained. The calculations of inner beam and outer beam show the change rule of internal force and bridge radius. The reasonable calculation methods of continuous curved box girder bridges are obtained, which can offer help to the bridge designers.
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9

Russo, Francesco M., Terry J. Wipf, and F. Wayne Klaiber. "Diagnostic Load Tests of a Prestressed Concrete Bridge Damaged by Overheight Vehicle Impact." Transportation Research Record: Journal of the Transportation Research Board 1696, no. 1 (2000): 103–10. http://dx.doi.org/10.3141/1696-50.

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A series of diagnostic load tests performed on two prestressed concrete bridges located in western Iowa are discussed. The bridges are dual prestressed concrete I-beam structures. In June 1996, an overheight vehicle struck the westbound structure and caused significant loss of section and cracking. As a result of the severity of the damage and because of concerns about the remaining capacity and long-term durability of the damaged beams, the Iowa Department of Transportation decided to remove the two most severely damaged beams. The diagnostic load-testing portion of the research program consisted of positioning test vehicles of known weight at predetermined locations along the deck of the damaged westbound and undamaged eastbound bridge. Single-and dual-truck tests were conducted on each bridge. Following replacement of the damaged beams in the westbound structure, additional tests were conducted. The results of these three load tests are compared to determine the effect of the localized beam damage on the overall live load distribution pattern in the bridge. The objective of this research is to determine the effects of damage on the load distribution and the remaining strength of damaged prestressed concrete bridges. Noticeable differences in response were detected in the westbound and eastbound bridges before beam replacement, with the difference essentially disappearing after the repair of the westbound bridge. The research project also involved model bridge testing, along with the repair of the beams that were removed from service and those that were intentionally damaged in the laboratory. The project is now complete.
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10

Huang, Jian Wei, and Jonathan Davis. "Skew Reduction Factors for Moment in NEXT Beam Bridges with Integral Abutments." Applied Mechanics and Materials 878 (February 2018): 49–53. http://dx.doi.org/10.4028/www.scientific.net/amm.878.49.

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Northeast Extreme Tee (NEXT) beams have been recently developed for the accelerated bridge construction. The skew effect on live load distribution in a NEXT beam bridge, especially with integral abutments, is not clear and shall be assessed. In this paper, various skew NEXT beam bridges are evaluated through validated finite element (FE) analyses with solid brick elements. Parameters as studied include beam section, span length, and skew angle. Per AASHTO LRFD specifications, one- and two-lane loaded cases are examined to obtain the maximum tensile strains in beam stems under the design live loading (HL-93). Unskewed bridges are used as control specimens to compute skew reduction factors (SRF) for moment from the obtained FE strains. The FE- and LRFD-SRFs for moment are compared in terms of figures, which indicate the LRFD-SRFs have good agreements with the FE-SRFs at large. For the majority of the bridges, LRFD-SFRs govern the FE-SRFs. The research findings from this paper are useful for practicing engineers to safely design a skew NEXT beam bridge with integral abutments.
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