地铁运营对古建筑物振动响应影响分析  

Vibration Impact on Ancient Architecture Induced by Subway Running

作　　者：毛顺茂 熊超华 雷晓燕[2] 

机构地区：[1]南昌轨道交通集团有限公司,南昌董事长330038 [2]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：《城市轨道交通研究》2016年第10期13-17,共5页Urban Mass Transit

基　　金：国家自然科学基金项目(U1134107);江西省青年科学基金资助项目(20142BAB216001)

摘　　要：以南昌地铁1号线诱发的环境振动对"八一起义纪念馆"影响为工程背景,运用傅里叶变换法和有限元软件ANSYS,分别建立列车-轨道结构双层梁模型和大地-建筑物有限元模型。以水平速度为评价指标,仿真分析轮轨竖向力作用以及竖向力和横向力共同作用对古建筑物的振动影响。计算结果表明,地铁引起的建筑物振动为低频振动;随着楼层的增加,建筑物水平振动逐渐增大;横向力对建筑物的振动能量分布没有影响,对水平振动有一定的影响,其中对x方向影响较大;该建筑物振动没有超过标准。Based on the environmental vibration impact of Bayi Uprising Memorial Hall induced by Nanchang Metro Line 1, the track structure with two layer Eular beam model for slab track structure and the earth building finite element model are established by using Fourier transform method and large general finite element software ANSYS. With horizontal velocity as the evaluation index, the impact of vertical force and the impact of interaction between vertical and horizontal forces on the structure arc simulated. The results show that building vibration induced by metro run- ning is in the category of low frequency, while the floor in- crcases, the horizontal vibration of building will increase gradually. Sincc the latcral force has a certain impact on the horizontal vibration, especially for the x direction, building vibration does not exceed the standard.

关 键 词：地铁运营 古建筑物 振动响应 横向力 水平速度 

分 类 号：U211.3[交通运输工程—道路与铁道工程]