深圳地铁重叠隧道列车振动响应测试与数值分析

英文篇名：On-site Test and Numerical Analysis of Dynamic Response of Shenzhen Overlap Tunnels due to Train's Vibration
中文刊名：城市轨道交通研究
英文刊名：Urban Mass Transit
作者：凌昊 ; 郑余朝 ; 仇文革 ; 龚伦
英文作者：Ling Hao ; Zheng Yuchao ; Qiu Wenge ; Gong Lun School of Civil Engineering ; Southwest Jiaotong University ; 610031 ; Chengdu ; China
中文关键词：地铁 ; 重叠隧道 ; 列车振动 ; 结构动力分析
英文关键词：metro ; overlap tunnels ; train's vibration ; structural dynamic analysis
出版日期：2010-08-15
机构：西南交通大学土木工程学院;
年：2010
期：08
出版单位：城市轨道交通研究

摘要

在对深圳地铁重叠隧道各典型断面现场振动加速度测试的基础上,结合相关车辆体系的振动理论,得到了重叠隧道各典型断面列车振动荷载的数学表达式,进而采用有限元法分析了各典型断面隧道结构的动力性态。分析表明:计算结果和实测值符合良好;对于单洞双层的隧道结构,最不利受力位置出现在隔板与边墙的连接处,而双隔板结构对列车振动的反应小于单隔板结构;结构设计受静力控制,但需要考虑列车振动对结构的影响。
Based on the vibrating acceleration data measured from several typical sections of overlap tunnels in Shenzhen Metro,plus the related vibrating theory of train,a numerical expression of train vibrating load is obtained.In addition,the dynamic response of overlap tunnels due to the train load is analysed by FEM.The analysis results indicate that the calculation data are close to the tested data;for the double-deck tunnel,the most unfavourable site is located in the cross of middle plate and side wall;when the double-plate is served as a middle plate,the structural response due to train's vibration is smaller than the response of single plate;structural design mainly considers the static load,but the influence that the train imposes on the structure shall also be taken into account.

引文

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