Seismic response analysis of complex subway station structure with unequal-span in liquefiable foundation

被引：0
|
作者：
Wang J. [1 ,2 ]
Fu J. [3 ]
Zhuang H. [3 ]
Dou Y. [1 ]
Ma G. [1 ]
机构：
[1] School of Civil and Transportation Engineering, Hebei University of Technology, Tianjin
[2] China National Machinery Industry Co., Ltd., Beijing
[3] Institute of Geotechnical Engineering, Nanjing Tech University, Nanjing
来源：
Zhendong yu Chongji/Journal of Vibration and Shock | 2020年 / 39卷 / 07期
关键词：
Sand liquefaction; Seismic performance; Seismic response; Subway station; Unequal-span underground structure;
D O I：
10.13465/j.cnki.jvs.2020.07.024
中图分类号：
学科分类号：
摘要：
Foundation liquefaction is one of the important causes for serious damage of subway underground station structure in earthquake. However,there is a little research on the seismic response of subway underground station structure in liquefiable sites at present. The research on the seismic response of large and complex underground station structures with unequal spans is even more rare. In this paper, by introducing the large deformation constitutive model of sand liquefaction and using the finite element mesh adaptive adjustment technique to overcome the distortion of soil mesh large deformation, a finite element numerical model of static and dynamic coupling nonlinear interaction between liquefied site soil and complex unequal span subway station structure was established. The distribution characteristics of site liquefaction, floating characteristics of unequal-span station structure, displacement settlement and vector characteristics of surrounding site, lateral deformation and seismic damage characteristics of the interaction system were analyzed. The seismic response law of the interaction system and the seismic failure characteristics of large-scale unequal-span underground structures in liquefied foundation were preliminarily revealed. The research results help to improve the understanding of the seismic response of unequal-span subway station structures in liquefied sites and the seismic design methods. © 2020, Editorial Office of Journal of Vibration and Shock. All right reserved.
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页码：170 / 179
页数：9
相关论文
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