地铁列车引起与地铁线路合建建筑结构振动特性试验研究(修改2).doc

地铁列车引起与地铁线路合建建筑结构振动特性试验研究(修改2)
地铁列车引起与地铁合建建筑结构环境振动特性现场试验分析
1211肖桂元韦红亮王志驹;龙进彬( 1、桂林理工大学;广西交通厅)摘要:通过对地铁列车引起与地铁合建建筑结构环境振动响应进行现场试验,从时域和频域角度分析了地铁列车引起合建建筑结构环境振动特性。研究结果表明,在地铁列车荷载作用下,合建建筑结构的振动幅值随距振源距离增大而减小,;合建建筑结构上部结构的振动频率分布特性基本上与地铁线路结构一致,主要集中在20~80Hz范围内;合建建筑结构横向环境振动水平虽较垂向环境振动要小,但两者处于同一水平,甚至在部分频率范围内要比垂向速度振动水平要高,横向环境振动对人们工作和生活的干扰不能忽视。
关键字:地铁列车;合建建筑;振动特性;现场试验
中图分类号: U 文献识别码:A On-situ experiment and analysis of vibration characteristics of the Jointly-Built
Structure of Subway and the Buildings Caused by the train
XIAO Gui-yuan1 , WANG Zhi-ju1 , CHEN Long1, WEI Hong-liang2
(1、Guilin University of Technology scientific experiment center of mining, metallurgy and environment; b. Guangxi Key Laboratory of geomechnics and Geotechnical Engineering, Guilin 541004;2、
Communications Department of Guangxi Zhuang Autonomous Region, Nanning 530012)
Abstract: Through on-situ experiments and analysis of vibration characteristics of the
Jointly-Built Structure of Subway and the Buildings caused by the metro, this paper analyzes the vibration characteristics of building structures caused by the subway train from the perspective of the time domain and frequency domain. The research findings show that under the subway train load, the Jointly-Built Structure vibration amplitude decreases with increasing distance from the source, the transverse vibration response amplitude is about times of the vertical vibration response amplitude; The vibration frequency distribution characteristics of the upper structure of the jointly-built structure is basically consistent with the structure of the subway line, which is mainly concentrated in the range from 20 HZ to 80 HZ. The horizontal environmental vibration level of the jointly-built structure is lower than the vertical one, but they are on the same level, and the vibration level is higher than the vertical speed one even in some frequency range ,so the
interference in people’s working an