不同类型地震波作用下地铁车站横通道动力响应分析  

Dynamic Response Analysis of Cross Passage in Subway Station under Different Types of Seismic Waves

作　　者：王忠昶 王嘉辉 夏洪春[2] WANG Zhongchang;WANG Jiahui;XIA Hongchun(School of Traffic and Transportation Engineering,Dalian Jiaotong University,Dalian 116028,China;School of Civil Engineering and Architecture,Dalian University,Dalian 116622,China)

机构地区：[1]大连交通大学交通运输工程学院,辽宁大连116028 [2]大连大学建筑工程学院,辽宁大连116622

出　　处：《大连交通大学学报》2022年第6期86-92,104,共8页Journal of Dalian Jiaotong University

基　　金：辽宁省“兴辽英才计划”资助项目(XLYC1807219);大连大学科研创新创业团队资助项目(XQN202002)。

摘　　要：为了获得不同类型地震波对地铁车站横通道衬砌结构的影响规律,以大连地铁5号线某车站横通道为背景,利用Midas/Gen软件对不同类型地震波作用引起衬砌结构的位移、应力、加速度等动力响应特性进行分析.结果表明:地铁车站横通道衬砌结构侧墙处的相对水平位移在不同类型地震荷载下随埋深增加而减小,不同地震波对衬砌层间相对位移影响百分比的差异较为明显,Kobe波对其影响最大;衬砌结构在各层侧墙与中隔板交叉处产生应力集中现象;不同地震荷载下拱顶处的水平加速度峰值均大于拱底处的水平加速度峰值,且顶板和底板产生的加速度对所输入的地震波加速度均有放大效果;各处监测点在不同地震作用下产生的竖向位移最大值为4.86 mm,最大主应力2.81 MPa,均满足规范要求.In order to obtain the influence of different types of seismic waves on the lining structure of subway station cross passage,the dynamic response characteristics of the lining structure caused by different types of seismic waves such as displacement,stress and acceleration were analyzed by using MIDAS/GEN software in the background of the construction of cross-passage in a station of Dalian Metro Line 5.The results show that the relative horizontal displacement at the side wall of the lining structure of the transverse passage of the subway station is decreased with the increase of the buried depth under different types of seismic loads.The influence percentage of different seismic waves on the relative displacement between the lining layers is obviously different,and the influence of Kobe wave is the greatest.Stress concentration occurs at the intersection of the side wall and the middle partition of the lining structure.Under different seismic loads,the peak of horizontal acceleration at the vault is greater than that at the bottom of the arch,and the acceleration generated by the roof and floor can amplify the acceleration of the input seismic wave.The maximum vertical displacement and the maximum principal stress of each monitoring point under different earthquake action are 4.86 mm and 2.81 MPa,which all meet the requirements of the codes.

关 键 词：地铁车站 横通道 衬砌结构 地震波 动力响应 

分 类 号：U231.4[交通运输工程—道路与铁道工程]