天津软土地区地铁车站结构的三维地震响应  

3-dimensional Seismic Response Analysis of Subway Station in Soft Soil Area of Tianjin

作　　者：杨德健[1] 王晓鹏[1] 

机构地区：[1]天津城建大学土木工程学院,天津300384

出　　处：《天津城市建设学院学报》2013年第4期249-254,共6页Journal of Tianjin Institute of Urban Construction

摘　　要：采用黏弹性边界,建立土-结构相互作用的三维动力模型,对软土地区的天津地铁5号线月牙河路站进行三维数值模拟,重点分析了在天津波输入下,地铁车站中柱关键部位的应力、加速度和下层中柱的水平相对位移时程响应.研究结果表明:地铁车站中柱与顶板、底板和中板的连接处为应力集中的薄弱部位,下层中柱的水平相对位移和水平方向加速度反应主要由水平地震作用控制.A numerical simulation of Yueyahe Road Station of subway in Tianjin soft soil area was carried on by establishing the 3-D dynamic model based on the soil-structure interaction, and the viscoelastic artificial boundary. The main point was focused on the seismic time-history analysis of stress, acceleration and horizontal relative displacement of key nodes in col- umns. The research results showed that, the joints of columns with top, medium and bottom plate were the weak parts of structure because of stress concentration. The horizontal relative displacement and acceleration mainly controlled by the horizontal direction seismic wave.

关 键 词：地铁车站 黏弹性人工边界 土-结构相互作用 地震响应 

分 类 号：TU93[建筑科学—结构工程]