隧道抗震仰拱形式优化分析  

Optimized Analysis for Seismic Design on Inverted Arch of Tunnel

作　　者：高峰[1] 王猛[1] 胡蓉[1] 尹恒[1] 王长辉[1] 

机构地区：[1]重庆交通大学土木建筑学院,重庆400074

出　　处：《交通科技与经济》2014年第2期71-75,共5页Technology & Economy in Areas of Communications

基　　金：国家自然科学基金资助项目(51178490);山区桥梁与隧道工程国家重点实验室培育基地开放基金项目(CQSLBF-Y12-2);中铁二院科研项目(2009-55)

摘　　要：借助大型有限元软件ANSYS对隧道的地震反应进行数值模拟研究,确定计算模型并选取适当的材料参数,利用EL.Centro地震波研究处于特定条件下仰拱形式不同的隧道,分析隧道衬砌的位移、应力变化情况,确定不同围岩条件下适宜的隧道仰拱曲率半径,优化隧道仰拱形式。China is a country of earthquake disasters,found in the existing tunnel seismic damage data,when the inverted arch form is different,the tunnel subjected to the earthquake disaster is different,in this paper,by means of large finite element software ANSYS,a numerical simulation study on the seismic response of the tunnel is done.Determining the calculation model and selecting appropriate material parameters.Studying different inverted arch form of tunnel under certain conditions by using the EL. Centro earthquake wave,changes of the displacement and stress of tunnel lining is analyzed,and then appropriate inverted arch curvature radius of tunnel in different surrounding rock conditions is determined, the tunnel arch form is optimized.

关 键 词：隧道 抗震 仰拱形式 曲率半径 界限 位移 应力 

分 类 号：U448[建筑科学—桥梁与隧道工程]