Simplified design theory of variable curvature friction pendulum bearing with adaptive capability and its application in railway bridge

Wei, Biao; Yang, Zhixing; Xiao, Binqi; Jiang, Lizhong; Yu, Yujie

doi:10.1016/j.istruc.2024.106370

Cited by 13 publications

(2 citation statements)

References 36 publications

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“…The CHN60 rails are fixed and restrained to the track plate by WJ-8C type fasteners. The design of the bearings of the whole bridge is based on spherical steel bearings [7], which are arranged as shown in Figure 1c.…”

Section: Engineering Backgroundmentioning

confidence: 99%

“…Hu et al created a coupling system encompassing a train, track, and subgrade, revealing that the bridge-subgrade transition section experiences peak dynamic stress and displacement [6]. Wei et al examine the seismic vulnerability of HSR bridges with track constraints, emphasizing the importance of track-bridge interaction in seismic response analysis [7]. Yan et al employed a 100 m finite element model for the subgrade track outside the bridge, aiming to minimize boundary condition impacts [8].…”

Section: Introductionmentioning

confidence: 99%

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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: Engineering Backgroundmentioning

confidence: 99%