Simplified response displacement method for transverse aseismic analysis of soft soil tunnel

被引:0
|
作者
Huang Mao-song [1 ,2 ]
Liu Hong-zhe [1 ,2 ]
Cao Jie [3 ]
机构
[1] Tongji Univ, Dept Geotech Engn, Shanghai 200092, Peoples R China
[2] Tongji Univ, Minist Educ, Key Lab Geotech & Underground Engn, Shanghai 200092, Peoples R China
[3] China Airport Construction Grp Corp CAAC, Airport Engn Civil Aviat R&D Base, Beijing 100621, Peoples R China
关键词
response displacement method; complex variable method; aseismic design; whole dynamic finite element method; soil spring stiffness;
D O I
暂无
中图分类号
P5 [地质学];
学科分类号
0709 ; 081803 ;
摘要
Response displacement method is a kind of simple and practical analysis method for aseismic design of soft soil tunnel, for the method can reflect dynamic reaction behavior of soft soil tunnel under aseismic load. Taking square section tunnel for example, the accuracy of the method has been verified by comparing its predictions with results from a soil-structure whole dynamic finite element method. Based on plane strain assumption, the analytical expression for soil spring stiffness has been deduced from the function of complex variable method in elastic theory for the purpose of simplifying the calculation process of response displacement method. The analytical solution for soil spring stiffness has been verified by comparing its predictions with results from finite element method. The analytical expression for soil spring stiffness has been applied to response displacement method. Meanwhile, simplified calculation models for shear stress and seismic response displacement of free soil field have been adopted. The whole dynamic finite element method has been used to validate the accuracy of simplified response displacement method for transverse secion aseismic analysis of soft soil tunnel.
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页码:3115 / 3121
页数:7
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