地铁车辆段试车线列车振动影响的试验研究  

Experimental Investigation into Train-Induced Vibrations of Test-Line at Metro Depot

作　　者：汪益敏[1] 曾泽民[1] 邹超[1] 陈页开[1] 

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,广东广州510640

出　　处：《华南理工大学学报（自然科学版）》2014年第12期1-8,共8页Journal of South China University of Technology(Natural Science Edition)

基　　金：国家自然科学基金资助项目(50808086);广州市地下铁道总公司科研项目(J11ZZ090008)

摘　　要：国内很多城市的地铁车辆段正在规划和实施上盖物业开发，为了分析和评价地铁车辆段列车运行造成的环境振动影响，对广州地铁3号线厦沼车辆段试车线临近地面及建筑物振动进行了现场实测，在时域和频域内分析了振动的传播特性，并将实测结果与我国环境振动标准进行对比和分析．研究结果表明：当车辆段试车线列车正常运行时，临近地面竖向振动明显大于水平振动，实测的最大竖向振动加速度级为66．4～91．2dB，竖向振动的响应频带为10-120Hz，竖向振动峰值出现在25～40Hz之间；试车线列车运行引起临近建筑物的最大振动加速度级为48．9～76．2dB，振动沿结构物向上传播时，振动频率成分主要是5～60Hz，楼板振动分频最大加速度级出现在20～25Hz之间；在距离轨道0-30m范围之内，地面振动与建筑物振动均已经超过相关国家振动标准，地铁车辆段上盖物业开发时在试车线临近区域采取减振设计措施控制环境振动影响十分必要．In recent years, over-track buildings have been planned and constructed at the upper space above metro depots in many Chinese cities. In order to analyze and evaluate the influence of train-induced environment vibra- tions at metro depots, the field measurements of vibrations of ground and buildings adjacent to the test-line at Xia- jiao Metro Depot of Guangzhou Metro Line 3 were carried out, and the propagation characteristics of the vibrations were analyzed in the domains of time and frequency. Then, the results were compared with the national vibration standards for the environmental impact assessment of vibration. It is found that （ 1 ） when the train at the metro depot runs normally on the test-line, the vertical vibration of adjacent ground is significantly larger than the horizon- tal vibration with a measured maximum vertical vibration acceleration level of 66.4 - 91.2 dB and a vertical vibra- tion frequency range of 10- 120 Hz; furthermore, the vertical vibration peak values appear within the frequency range of 25 - 40 Hz; （2） the maximum vertical vibration acceleration level of adjacent buildings is 48.9-76.2dB, and when the vibrations propagate upward along the structures, the vibration frequencies are mainly 5 -60 Hz and the maximum vibration acceleration levels of floor appear within 20 - 25 Hz ; and （ 3 ） the ground and building vi- bration levels within the range of 0 - 30 m from the track center both exceed the relevant national vibration stan- dards. Therefore, it is very necessary to adopt measures to reduce the influence of environmental vibrations in the area adjacent to the test-line when over-track buildings are going to be constructed above metro depots.

关 键 词：地铁 车辆段 试车线 振动 建筑物 现场测试 

分 类 号：U231[交通运输工程—道路与铁道工程]