地震工程学报Issue(3)：434-440,7.DOI:10.3969/j.issn.1000-0844.2014.03.0434
基于黏弹性边界的地下隧道非线性地震响应分析模型
A Nonlinear Seismic Response Analysis Model for Underground Tunnels Based on the Viscous-spring Boundary
摘要
Abstract
This paper presents a model for the nonlinear seismic response analysis of tunnels,in which the viscous-spring boundary method and the earthquake equivalent node force input method are combined for half-space seismic excitation and the general finite element software ANSYS is utilized for analysis.The model uses the equivalent linear method to model soil nonlinearity and combines Rayleigh damping and material damping to model soil damping.Concrete and reinforce-ment nonlinearity are considered separately,and soil-liner contact is taken into account.The mod-el is validated through comparisons with the results in the existing literature.The nonlinear seis-mic response of the metro twin tunnels in Tianjin City with thick soil layers is implemented,and it is shown that when two tunnels are close,the tunnel-tunnel interaction is significant and non-linear seismic stresses of the two tunnels become larger.This model can be used for the nonlinear seismic analysis of underground structures.关键词
地下隧道/地震响应分析/非线性/等效线性法/黏弹性边界/边界等效节点力Key words
underground tunnels/seismic response analysis/nonlinear/equivalent linear method/viscous-spring boundary/equivalent node load分类
建筑与水利引用本文复制引用
梁建文,于军港,张季,巴振宁..基于黏弹性边界的地下隧道非线性地震响应分析模型[J].地震工程学报,2014,(3):434-440,7.基金项目
天津市应用基础研究重点项目(12JCZDJC29000) （12JCZDJC29000）
国家自然科学基金项目(51378348) （51378348）
