车辆段不同区域上盖建筑振动测试分析  

Analysis of Vibration Test of Over-track Buildings in Different Areas of Depots

作　　者：贺利工 徐浩能 唐柏赞 刘庆杰[2] 涂勤明 冯青松[2] HE Ligong;XU Haoneng;TANG Baizan;LIU Qingjie;TU Qinming;FENG Qingsong(Guangzhou Metro Design&Research Institute Co.,Ltd.,Guangzhou 510010,China;State Key Laboratory of Performance Monitoring and Protecting of Rail Transit Infrastructure,East China Jiaotong University,Nanchang 330013,China)

机构地区：[1]广州地铁设计研究院股份有限公司,广州510010 [2]华东交通大学轨道交通基础设施性能监测与保障国家重点实验室,南昌330013

出　　处：《噪声与振动控制》2024年第2期235-241,共7页Noise and Vibration Control

基　　金：国家自然科学基金资助项目(51868024;52068029)。

摘　　要：为研究地铁列车在车辆段不同区域引起的上盖建筑振动问题,对广州某车辆段试车线,咽喉区及其上盖建筑进行现场振动测试,分析车辆段各区域车致振动特性及传递规律。分析结果表明,轨旁源强振动的主频随车速增加而增大,咽喉区15 km/h、试车线40和60 km/h工况的主频分别为31.5、40和50 Hz,试车线源强的振动能量要大于咽喉区。由于梁和楼板的阻抗作用,振动总能量在向上传播的过程中逐渐衰减,不同传递路径对不同频段振动的衰减作用不尽相同。建筑物内振动主频主要受楼板固有频率影响较大,主要集中在40~50 Hz范围。In order to study the vibration of the over-track buildings caused by metro train operation in different areas of the depot,the field tests of the testing line,throat area,maintenance line and its over-track buildings in a depot in Guangzhou are performed.The transmission characteristics of vehicle induced vibration in each section of the depot are analyzed by means of Fourier transform and transmission loss.The analysis results show that the dominant frequency of strong vibration of trackside source increases with the increase of vehicle speed.The dominant frequencies of 15 km/h in throat area,40 km/h in testing line and 60 km/h in testing line are 31.5,40 and 50 Hz respectively,and the vibration energy of source intensity of the testing line is greater than that of throat area.Due to the impedance of the beam and floor,the total vibration energy gradually attenuates in the process of upward propagation.Different transmission paths have different attenuation effects on different frequency bands.The main frequency of vibration in the building is mainly affected by the natural frequency of the floor,and concentrated in the range of 40-50 Hz.

关 键 词：振动与波 地铁车辆段 上盖建筑 振动传递规律 试车线 咽喉区 

分 类 号：U231[交通运输工程—道路与铁道工程]