Effects of vertical ground motions on seismic vulnerabilities of a continuous track-bridge system of high-speed railway
Effects of vertical ground motions on seismic vulnerabilities of a continuous track-bridge system of high-speed railway
复制标题
垂直地震动对高速铁路连续轨桥系统地震脆弱性的影响
DOI：
10.1016/j.soildyn.2018.08.022
复制
发表时间：
2018-12
影响因子：
4
通讯作者：
Wang Teng
中科院分区：
文献类型：
--
作者：
Wei Biao;Zuo Chengjun;He Xuhui;Jiang Lizhong;Wang Teng
高速铁路连续梁桥与我国已知的几条断层距离较近。距桥址不同距离的断层将产生不同的地震动，其竖向分量与水平分量的比值也不同。因此，有必要研究竖向地震动对轨道-桥梁系统地震反应和易损性的影响。针对这一问题，本文对一座在我国广泛使用的连续梁桥进行了增量动力分析（IDA），并进一步进行了地震易损性分析。结果表明，大部分桥梁和轨道构件的破坏概率沿着地震动竖向分量的增大而增大。这一趋势对纵向轨道部分滑带层和各方向桥梁部分桥墩有显著影响，但对各方向桥梁部分支座影响不大。而且，由于相邻桥梁地震反应的不同，这种趋势对于跨越梁缝的轨道部分更为显著。轨道-桥梁系统的抗震设计应严格考虑竖向地震动的影响。
A continuous bridge in high-speed railway is close to several known faults in China. Those faults, respectively at different distances from the bridge site, will produce different ground motions with the different ratios of vertical component to the horizontal component at the bridge site. It is necessary to identify the influence of vertical ground motions on the seismic responses and vulnerabilities of the track-bridge system. This paper solved this problem by carrying out an incremental dynamic analysis (IDA) and a further seismic fragility analysis on a widely used continuous bridge in China. The results show that the damage probabilities of most bridge and track components increase along with the increase of vertical part in ground motions. This trend is significant for the sliding layer of track part in the longitudinal direction and the piers of bridge part in any direction, however, insignificant for the bearings of bridge part in any direction. Moreover, this trend is more significant for the track part across the girder gap due to the different seismic responses of adjacent bridges. The seismic design of track-bridge system should rigorously take the vertical part of ground motions into account.
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影响因子：
4.1
作者：
Cornell, CA;Jalayer, F;Foutch, DA
通讯作者：
Foutch, DA
DOI：
10.1061/(asce)st.1943-541x.0000306
发表时间：
2011-02
期刊：
Journal of Structural Engineering-asce
影响因子：
--
作者：
S. J. Kim;C. Holub;A. Elnashai
通讯作者：
S. J. Kim;C. Holub;A. Elnashai
影响因子：
5
作者：
Zhenghua Wang;J. Padgett;L. Dueñas-Osorio
通讯作者：
Zhenghua Wang;J. Padgett;L. Dueñas-Osorio
影响因子：
4.5
作者：
Zeynep Gulerce;E. Erduran;S. Kunnath;N. Abrahamson
通讯作者：
Zeynep Gulerce;E. Erduran;S. Kunnath;N. Abrahamson
影响因子：
4.4
作者：
Chen Ling-kun;Zhang Nan;Guo Wei
通讯作者：
Guo Wei