引入无限元的地铁区间隧道地震反应分析

Studying on the Response of Subway Tunnel Subjected to Earthquake Loading

采用弹塑性本构关系和摩尔库伦屈服准则 ,应用六结点单向无限元和四结点双向无限元与八结点平面等参单元耦合的方法 ,对地铁区间隧道及周围土体这一结构复合系统进行动力无限元分析 ,揭示出地震荷载作用下地铁隧道结构的工作状态 。

Adopting the method of finite element coupled with inf inite elements,incorporating nonlinear stress-strain relationship of material a nd Mohr-Coulomb criteria,the dynamic response of the tunnel subjected to earthq uake loading is studied The dynamic working state of the tunnel is revealed,whi ch provides basis for subway tunnel design and setting up defense against earthq uake.