上海地铁荷载作用下邻近建筑物振动响应分析  

Numerical Analysis of the Vibration Impact Induced by Underground Moving Trains on Surrounding Buildings in Shanghai

作　　者：高广运[1,2] 陈娟[1,2] 朱林圆 GAO Guang-yun;CHEN Juan;ZHU Lin-yuan(Key Laboratory of Geotechnical and Underground Engineering of Ministry of Education,Tongji University, Shanghai 200092, China;Department of Geotechnical Engineering, Tongji University, Shanghai 200092, China;CREEC East China Survey and Design Co. Ltd., Hangzhou 310004, China)

机构地区：[1]同济大学岩土及地下工程教育部重点实验室,上海200092 [2]同济大学土木工程学院地下建筑与工程系,上海200092 [3]中铁二院华东勘察设计有限责任公司,杭州310004

出　　处：《噪声与振动控制》2016年第6期136-141,共6页Noise and Vibration Control

基　　金：国家自然科学基金资助项目(51178342);高等学校博士点基金资助项目(20130072110016)

摘　　要：为进一步了解上海地区地铁运行所引起的临近建筑物振动情况,根据上海实际地层剖面建立隧道-土体-建筑物相互作用三维有限元数值模型,分析地铁运行所引起的相邻建筑物各层水平和竖向振动变化规律。其中,列车荷载由三质点振动模型求出并施加于轨道上。同时对列车运行速度、建筑物与隧道距离及建筑物楼层数等因素对振动幅值的影响进行分析。结果表明,同一建筑物内竖向振动随层高基本不变,水平向振动先减小后增加,顶层有明显的振动放大现象;建筑物各层的振动随列车车速的减小、与轨道中心距离的增大和楼层数的增大而减小;但随着楼层数的增加,建筑物各层水平向振动放大现象也更明显。To further understand the building vibrations induced by nearby subways in Shanghai, a three dimensional tunnel-soil-building interaction FEM model is established based on actual stratigraphic profile of Shanghai. The dynamic train load is determined through the three mass- points vibration model, and exerted on the track of the established model. The variations of vertical and horizontal vibrations in each floor of the surrounding building are analyzed. Besides, the effects of train velocity, tunnel-to-building distance and the total number of floors on the building vibration amplitudes are investigated.The results show that the horizontal vibration of buildings decreases initially and increases later, while the vertical vibration amplitude basically remains the same; there exists an obvious vibration amplification effect for horizontal vibration in the top story of the building. Building vibration in each floor decreases with the decreasing of the train speed and increasing of the tunnel-to-building distance and building floor number. However, the horizontal vibration amplification exaggerates when the total number of the floors increases.

关 键 词：振动与波 地铁 建筑物 数值模拟 列车动荷载 

分 类 号：TU311.3[建筑科学—结构工程] U231[交通运输工程—道路与铁道工程]