Local response acceleration method for seismic analysis of deep buried underground structures

被引：0
作者：
Xu Z.-G. [1 ]
Du X.-L. [2 ]
Xu C.-J. [1 ,3 ]
Wu Y. [2 ]
机构：
[1] Jiangxi Key Laboratory of Infrastructure Safety Control in Geotechnical Engineering, East China Jiaotong University, Nanchang
[2] Key Laboratory of Urban Security and Disaster Engineering of the Ministry of Education, Beijing University of Technology, Beijing
[3] Research Center of Coastal and Urban Geotechnical Engineering, Zhejiang University, Hangzhou
来源：
Gongcheng Lixue/Engineering Mechanics | 2021年 / 38卷 / 06期
关键词：
Deep buried; Local response acceleration method; Seismic analysis; Simplified analysis method; Underground structure;
D O I：
10.6052/j.issn.1000-4750.2020.06.0406
中图分类号：
学科分类号：
摘要：
The urban underground structures gradually show the characteristics of larger buried depth, of complicated section and of stereoscopic space. The response displacement method (RDM) and response acceleration method (RAM) recommended by Code for Seismic Design of Urban Rail Transit Structures (GB 50909−2014) have some limitations in the seismic analysis of underground structures with large buried depth or complicated sections. Based on the generalized response displacement method (GRDM) and traditional RAM, this paper proposes the local response acceleration method (LRAM) for the seismic analysis of deep buried underground structures, and this method only needs to determine the acceleration and soil shear stress of the local free field. In combination with a tunnel structure with circle cross section, the validity of the proposed method with different heights of the model and different stiffness of the structure is verified by comparing with the results of the dynamic time history analysis method. The analysis results show that the proposed method is a practical analysis method with a simple operation. When the height of the model is 5 times that of the underground structure, a more accurate structural response can be obtained. Copyright ©2021 Engineering Mechanics. All rights reserved.
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页码：62 / 71
页数：9
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