Aseismic performance of underground structure under mainshock-aftershock sequences based on endurance time analysis

被引：0
|
作者：
Wang, Guobo [1 ]
Wang, Hongjie [1 ]
Wang, Manning [2 ]
Jin, Liguo [3 ]
Zhao, Dingfeng [4 ]
机构：
[1] College of Civil Engineering and Arehiteetural, Wenzhou University, Wenzhou
[2] China National Maehinery Industry Group Co., Ltd., Beijing
[3] Institute of Geology, China Earthquake Administration (CEA), Beijing
[4] Shanghai Waterway Engineering Design and Consulting Co., Ltd., Shanghai
来源：
Zhendong yu Chongji/Journal of Vibration and Shock | 2024年 / 43卷 / 15期
关键词：
endurance time analysis; mainshock-aftershock sequences; seismic damage; underground structure;
D O I：
10.13465/j.cnki.jvs.2024.15.030
中图分类号：
学科分类号：
摘要：
Here, aiming at current study on aseismic performance of subway underground structures mostly only considering effects of mainshock and ignoring potential multi-aftershock to possibly occur after an earthquake, a study was performed for dynamic response law of underground structure under actions of mainshock-aftershock sequences. A typical 2-story 3-span subway station was taken as the prototype, and a finite element numerical simulation model of soil-underground structure interaction was established. 12 mainshock-aftershock sequences as inputs were constructed, based on the basic concept of aseismic time history method and combined with design response spectra in relevant aseismic standards in China, 2 aseismic time history curves were generated. Lateral deformation characteristics and damage failure laws of the subway underground station under actions of mainshock-aftershock sequences were studied. The results showed that the aseismic time history method can be taken as a new and efficient method for studying aseismic performance of underground structures under actions of mainshock-aftershock sequences; lateral deformation of the structure with damage after mainshock should fully consider effects of the peak intensity ratio a of mainshock-aftershock sequence; the higher the level of mainshock and the state of failure, the smaller the critical value of the peak intensity ratio a for generating aftershock incremental damage, and the higher the risk of more serious damage faced by the structure; the study results can provide new ideas for aseismic analysis and evaluation of structures under sequential seismic actions. © 2024 Chinese Vibration Engineering Society. All rights reserved.
引用
收藏
页码：261 / 268and276
相关论文
共 28 条
  • [1] Wang J., Jian X.U., Peng P.A.N., Et al., Seismic performance and incremental damage analysis of underground structures under mainshock-aftershock earthquakes [J], Engineering Mechanics, 40, 12, pp. 203-211, (2023)
  • [2] Fang L.H., Wu J.P., Wang W.L., Et al., Relocation of the mainshock and aftershock sequences of Ms7. 0 Sichuan Lushan earthquake [J], Chinese Science Bulletin, 58, 2, pp. 3451-3459, (2013)
  • [3] Guixi Y.I., Long F., Liang M., Et al., Seismogenic structure of the 5 September 2022 Sichuan Luding Ms6. 8 earthquake sequence [J], Chinese Journal of Geophysics, 66, 4, pp. 1363-1384, (2023)
  • [4] Hongnan L.I., Xiao S., Linsheng H.U.O., Damage investigation and analysis of engineering structures in the Wenehuan earthquake [J], Journal of Building Structures, 29, 4, pp. 10-19, (2008)
  • [5] Huang Y., Miao Y.U., Bhattacharya S., Review on liquefaction-induced damages of soils and foundations during 2011 of the Pacific Coast of Tohoku Earthquake (Japan) [J], Chinese Journal of Geotechnical Engineering, 35, 5, pp. 834-840, (2013)
  • [6] Liwen C.A.I., Huang Y., Jing H.E., Et al., Earthquake damage and enlightenment from traffic system in 2022 Qinghai Menyuan Ms6. 9 earthquake [J], Earthquake Engineering and Engineering Dynamics, 42, 4, pp. 8-16, (2022)
  • [7] Jingbo L.I.U., Wang W., Zhao D., Et al., Pushover analysis method of underground structures under reversal load and its application in seismic damage analysis [J], China Earthquake Engineering Journal, 35, 1, pp. 21-28, (2013)
  • [8] Chen Z., Yifan F.A.N., Huang P., Et al., Column-wall shear ratio of subway station based on pushover method [J], China Civil Engineering Journal, 53, pp. 233-237, (2020)
  • [9] Qiu D.P., Chen J.Y., Xu Q., Improved pushover analysis for underground large-scale frame structures based on structural dynamic responses [J], Tunnelling and Underground Space Technology, 103, (2020)
  • [10] Zhuang H.Y., Yang J., Chen S., Et al., Statistical numerical method for determining seismic performance and fragility of shallow-buried underground structure [J], Tunnelling and Underground Space Technology, 116, (2021)
123