地铁振动引发地面与建筑物响应及其减振研究  

Research on Ground and Building Response Induced by Subway Vibration andits Vibration Reduction

作　　者：刘星宇 刘叔灼[1,2] 陈俊生 Liu Xingyu;Liu Shuzhuo;Chen Junsheng(State Key Laboratory of Subtropical Building Science,School of Civil Engineering and Transportation,South China University of Technology,Guangzhou 510610,China;South China Institute of Geotechnical Engineering,Guangzhou 510610,China)

机构地区：[1]华南理工大学土木与交通学院亚热带建筑科学国家重点实验室,广州510610 [2]华南岩土工程研究院,广州510610

出　　处：《科技通报》2024年第10期83-89,共7页Bulletin of Science and Technology

基　　金：广东省基础与应用基础研究基金项目(2020A1515010713)。

摘　　要：本文针对地铁振动对建筑造成的振动噪音问题,以广州地铁9号线地质勘察报告为基础,基于ABAQUS建立轨道-隧道-土层-建筑有限元模型,研究地面距隧道不同水平距离拾振点受到地铁振动的振动变化规律和地铁振动在建筑物中随楼层变化的传播规律,并探究空沟隔振对地铁振动的减振效果。结果表明:地铁运行引起的土层和建筑物振动以竖向振动为主,其中建筑物竖向振动与水平振动的比值更大;地面拾振点随着距离隧道水平距离的增大,振动衰减明显,其中初始的0~20 m段振动衰减最大;建筑物随楼层的增加振动变化不大,建筑振动能量主要以低频频段5~15 Hz为主,振动峰值分布在10 Hz附近;空沟隔振效果良好,对建筑物的加速度振级衰减率达到了4%,且中间楼层的衰减效果更好。Aiming at the problem of vibration and noise caused by subway vibration to buildings,based on the geological survey report of Guangzhou Metro Line 9,a rail-tunnel-soil layer-building finite element model was established based on ABAQUS to study the vibration change law of subway vibration at different horizontal distances from the ground to the tunnel pick-up point and the propagation law of subway vibration in the building with the change of floor.The results show that vertical vibration is the main vibration of soil layer and building caused by subway operation,and the ratio of vertical vibration to horizontal vibration of building is greater;With the increase of the horizontal distance from the tunnel,the vibration attenuation of the ground pickup point is obvious,and the initial 0-20 m vibration attenuation is the largest;The vibration energy of the building is mainly in the low frequency band 5-15 Hz,and the peak value of vibration is around 10 Hz;The gap has good vibration isolation effect,and the attenuation rate of the acceleration vibration level of the building reaches 4%,and the attenuation effect of the middle floor is better.

关 键 词：地铁振动 有限元模型 建筑物振动 振动特性 空沟隔振 

分 类 号：U211.3[交通运输工程—道路与铁道工程]