地铁引起古建筑物振动三维数值分析  

Three-dimensional Numerical Analysis of Subway-induced Vibration of a Historic Building

作　　者：涂勤明[1] 雷晓燕[1] 

机构地区：[1]华东交通大学铁路环境振动与噪声教育部工程研究中心,南昌330013

出　　处：《噪声与振动控制》2014年第5期130-134,共5页Noise and Vibration Control

基　　金：国家自然科学基金项目(U1134107);江西省普通本科高校科技落地计划项目

摘　　要：以南昌市八一广场地铁旁的一个古建筑物为研究对象,通过建立包含4孔隧道的轨道—隧道—大地—建筑物三维有限元模型,进行模态分析和瞬态动力学分析。计算1、2号线单独运行及1、2号线同时运行三种情况下的建筑物振动。结果表明:埋深较浅的2号线对建筑物振动影响较大;只有当1号线和2号线同时运行时,建筑物振动才会超过限值,但超标量不大;随楼层上升,建筑物水平振动呈减小趋势,但在顶层却有最大值。Taking a historic building near the subway of Nanchang Bayi Square as the research object, a three-dimensional finite element model of rail-tunnel-ground-building including four tunnels is constructed and the modal and transient dynamics analyses are conducted. Three situations, line 1 in operation, line 2 in operation and line 1 and line 2 in operation at the same time, are considered and their building vibration responses are calculated respectively. The results show that line 2 with shallow depth has a greater influence on the building vibration than line 1 does. Building vibration value exceeds the limit value a little bit only when the line 1 and line 2 are in operation at the same time. With the floor rising, building horizontal vibration decreases but its maximum value appears on the top floor.

关 键 词：振动与波 地铁 建筑物振动 数值分析 振动速度 

分 类 号：U211.3[交通运输工程—道路与铁道工程]