结构工程师2018，Vol.34Issue(z1)：122-129,8.
地震作用下软土隧道的易损性分析
Seismic Fragility Analysis of Tunnels in Soft Soils
摘要
Abstract
Seismic fragility of tunnels is the probability that tunnel structure's demand equals or exceeds a limit state under a seismic ground motion given a specified intensity.The assessment of tunnel's seismic fragility can not only provide some necessary guidance for the seismic design of tunnel structure,but also be used for future damage prediction.Based on the study of seismic fragility of tunnel structures in China and abroad,dynamic time-history analyses of a metro tunnel in soft soil of Shanghai were carried out by using finite element software.The nonlinear characteristics of the soil profile are considered by one-dimensional equivalent linear method.The fragility curves of the tunnel model were obtained and compared with the current analytical fragility curves from a referrence and the empirical curves from American Lifelines Alliance to highlight that the analytical fragility curves obtained are reasonable,and that the process for developing fragility curves for tunnels in soft soil is reasonable.关键词
隧道结构/地震易损性/动力时程分析/软土/易损性曲线Key words
tunnel structure/seismic fragility/dynamic time history analysis/soft soils/analytical fragility curve引用本文复制引用
周志光,任永强..地震作用下软土隧道的易损性分析[J].结构工程师,2018,34(z1):122-129,8.基金项目
国家科技支撑计划课题(2015BAK17B04-4) （2015BAK17B04-4）
国家自然科学基金项目(51478357) （51478357）
