Seismic vulnerability evaluation of rectangular prefabricated subway station structure based on IDA method

被引：0
|
作者：
Chen J. [1 ]
Du X. [1 ]
Xu C. [1 ]
Liu H. [2 ]
Jiang J. [3 ]
Liu D. [1 ]
机构：
[1] Key Laboratory of Urban Security and Disaster Engineering, The Ministry of Education, Beijing University of Technology, Beijing
[2] School of Civil and Transportation Engineering, Beijing University of Civil Engineering and Architecture, Beijing
[3] Institute of Geotechnical Engineering, Nanjing Tech University, Nanjing
来源：
Jianzhu Jiegou Xuebao/Journal of Building Structures | 2023年 / 44卷 / 07期
关键词：
damage probability; incremental dynamic analysis; prefabricated subway station; seismic performance; seismic vulnerability;
D O I：
10.14006/j.jzjgxb.2022.0189
中图分类号：
学科分类号：
摘要：
In order to evaluate the seismic performance of prefabricated underground structures and promote their application in underground engineering, a method for calibrating the limit values of the seismic performance index of prefabricated subway station structures was proposed. Then, based on the incremental dynamic analysis method, the seismic vulnerability curves of the two-story three-span prefabricated subway station structure in different site categories were established, and the damage probabilities of different performance states were evaluated. The analysis results show that seismic characteristics and site categories have significant influence on the dynamic response of prefabricated subway station structure. The lower the equivalent shear wave velocity of the site, the more significant the effect of ground motion on underground structure and the easier it is to suffer from seismic damage. In the case of seismic fortification of 9-degree (APG is 0.4g), when this structure is embedded in class I site, only 6.7% of the probability of damage occurs and the damage is minor; in class II site, the probability of minor damage is 26.3%, and the probability of exceeding minor damage is 3.8%; the structure in class II site is dominated by minor damage and moderate damage, the probabilities are 42.1% and 20.5% respectively, and the probability of exceeding moderate damage is 10.8%. At the same time, the given vulnerability curves and damage probability table of the two-story three-span prefabricated subway station structure can be used to quickly evaluate the seismic performance of this type structure. © 2023 Science Press. All rights reserved.
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页码：37 / 46
页数：9
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