Longitudinal seismic analysis method of utility tunnel in large-scale liquefiable site

被引：0
|
作者：
Ruan B. [1 ]
Ji H. [1 ]
Liu H. [1 ]
Wang S. [1 ]
Miao Y. [1 ]
机构：
[1] School of Civil and Hydraulic Engineering, Huazhong University of Science and Technology, Wuhan
来源：
Huazhong Keji Daxue Xuebao (Ziran Kexue Ban)/Journal of Huazhong University of Science and Technology (Natural Science Edition) | 2022年 / 50卷 / 08期
关键词：
effective stress method; energy dissipation node; reaction displacement method; seismic response; utility tunnel;
D O I：
10.13245/j.hust.220811
中图分类号：
学科分类号：
摘要：
In order to solve the longitudinal seismic analysis of long underground structures crossing liquefied complex sites, an improved generalized response displacement method was proposed for the prefabricated pipe gallery connection structure by using the effective stress method.The effectiveness of this method was verified by establishing a refined three-dimensional solid model. The longitudinal seismic performance of the utility tunnel was studied by setting memory alloy energy dissipation and damping joints at the locations where the seismic response of the utility tunnel is vulnerable. The results show that the improved generalized response displacement method is more reliable than the three-dimensional time history analysis method.The opening of tunnel joint calculated by effective stress method increases obviously in liquefaction area, but the seismic response of tunnel joint in non-liquefaction area changes minor.The opening of the tunnel joint at the location of the energy dissipation node is enlarged,while the opening in other areas is obviously attenuated,which effectively improves the seismic performance of the utility tunnel.The research contents can provide reference for seismic analysis and evaluation of long underground structures. © 2022 Huazhong University of Science and Technology. All rights reserved.
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页码：99 / 104
页数：5
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