Shaking table test of the seismic performance for railway simply-supported girder bridge isolated by self-centering bearing

Wei, Biao; Tan, Hao; Jiang, Lizhong; Xiao, Binqi; Lu, Andong

doi:10.1016/j.engstruct.2023.117249

Cited by 20 publications

(2 citation statements)

References 27 publications

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“…In general, the superstructure of a bridge tends to maintain their elasticity under seismic activity. In the finite element software, we use the elastic frame unit to simulate the box beam, base plate, track plate, and rail [24,25]. The sliding layer, CA mortar layer, fasteners, shear tooth grooves, shear reinforcement, and horizontal blocks play pivotal roles in the transmission of internal forces within essential elements of the track structure [26].…”

Section: Finite Element Modelmentioning

confidence: 99%

Effect of Subsequent Subgrade on Seismic Response of the High-Speed Railway Track–Bridge System

Wei,

Yuan,

Jiang

et al. 2024

Applied Sciences

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As an important part of the boundary conditions on both sides of the high-speed railway track–bridge system, the seismic response of the subgrade structure is different from that of the bridge structure. This difference has become increasingly significant with the widespread adoption of continuous welded rail technology in bridge construction. Therefore, investigating the seismic response of the bridge system, with a specific focus on the longitudinal constraint effects of the subsequent subgrade track structure, is of paramount importance. Utilizing finite element software, two distinct bridge models are developed: one incorporating the subsequent subgrade track structure and another excluding it. Through nonlinear time history analysis under varying seismic intensities, it is demonstrated that the longitudinal constraint of the subsequent subgrade track structure mitigates the longitudinal displacements and internal forces in critical components of the high-speed railway track–bridge system. Concurrently, acknowledging the heightened complexity and cost associated with post-earthquake repairs of the bridge structure compared to subgrade structure, this study uses a risk transfer connecting beam device. This device can redirect seismic damage from bridge structure to subgrade structure, thereby potentially reducing post-seismic repair expenses for the bridge.

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Section: Finite Element Modelmentioning

confidence: 99%

Effect of Subsequent Subgrade on Seismic Response of the High-Speed Railway Track–Bridge System

Wei,

Yuan,

Jiang

et al. 2024

Applied Sciences

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“…Railway transportation facilities are unique systems that function in extremely diverse natural and climatic conditions [1][2][3]. Ensuring the safe operation of this system is a complex and multifaceted task [5][6][7][8][9][10].…”

Section: Introductionmentioning

confidence: 99%

Stress-strain states of reinforced concrete spans of a railroad overpass using a spatial finite element model

Bondar,

Aldekeyeva,

Ospanova

2024

Vib. proced.

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The paper presents the results of computational analysis of the stress-strain state of reinforced concrete spans of the railway (single-track railway line) overpass over the highway, under specified loads using spatial finite element models. The static load consists of a cohesion of three TEM-18 diesel locomotives and two loaded gondola cars (up to 25 tons per axle). The purpose of this study was to ensure reliable and safe operation of artificial structures on the railroads, as there is a constant increase in transit freight trains from China through the territory of Kazakhstan to near and far abroad, and often the load on the axle reaches 25 tons, and sometimes larger values – up to 27 tons per axle. The results of the study are recommended to be used for inspections and tests of typical girder bridge spans, as well as in the case of monitoring their technical condition with increasing operational loads.

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Seismic vulnerability analysis of continuous beam bridge based on finite element Method

Li,

Jin,

Chen

et al. 2024

Environ Dev Sustain

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Shaking table test of the seismic performance for railway simply-supported girder bridge isolated by self-centering bearing

Cited by 20 publications

References 27 publications

Effect of Subsequent Subgrade on Seismic Response of the High-Speed Railway Track–Bridge System

Effect of Subsequent Subgrade on Seismic Response of the High-Speed Railway Track–Bridge System

Stress-strain states of reinforced concrete spans of a railroad overpass using a spatial finite element model

Seismic vulnerability analysis of continuous beam bridge based on finite element Method

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