边 金¹，  陶连金²，  张印涛²，  李芳成¹
    （1 广东海洋大学工程学院，湛江524088；2 北京工业大学城市与工程安全减灾省部共建教育部重点实验室，北京100124）

[摘要] 在某地建于地铁线路附近的两栋装有隔震装置和一栋没有安设隔震装置的建筑物内，对地铁列车运行引起的振动进行了监测，并对地面结构的振动进行了数值模拟，然后对记录的振动波和数值计算结果进行了分析与对比，发现随着建筑物高度的增加，振动峰值呈余弦函数变化；地铁列车运行在建筑物内引起的振动时程的主要频率成分集中在22~ 40Hz之间；安置在建筑物底部的隔震阻尼器对地铁运行诱发的振动波的阻隔作用不大；地铁列车运行引起的加速度值很小，不会对混凝土结构产生破坏，但生活在建筑物内的人群却能明显的感觉到振动；建筑物的振动不会表现出该振动波的特性，而是表现出本身的振动频率特性。因此，改变结构的动力特性是无法减小地铁列车运行引起的振动，而只能通过减弱振源来减轻振动，比如在轨道加隔振垫、挖隔振沟等。
[关键词] 振动；加速度；频率；振源
中图分类号：TU311.3    文献标识码：A  文章编号：1002-848X(2011) S2-0107-04

    Subway-train-motion-induced vibration influence on neighboring buildings and its propagation regulation
    Bian Jin¹, Tao Lianjin², Zhang Yintao²,  Li Fangcheng¹
    (1 Engineering College of Guangdong Ocean University, Zhanjiang 524088, China; 2 City and Project Safety Hazards Mitigation Educational Key Lab, Beijing University of Technology, Beijing 100124, China)

Abstract: The vibration of the three buildings induced by the subway train motion is recorded. Among them, at the bottom of two the shock insulation apparatuses are set up, and at the end of another there is no this kind of apparatuses. Then the numerical calculation is made on the non-isolation building. After analysis and comparison of the recorded vibration waves and the numerical calculation results, the following are found: with the height increase the vibration acceleration is changing in cosine function; the frequencies of the vibration waves mainly lie in 22~40Hz induced by the subway train motion; the shock insulation apparatuses basically don't act on the subway-train-motion-induced vibration; the subway-train-motion-induced vibration acceleration value is small, but people can feel it clearly; the induced building vibration doesn't display the characteristics of the train motion,  so the change of the building dynanuc behavior doesn't reduce the subway-train-motion-induced vibration, and the efficient way is to weaken the train motion, like installing vibration isolating pad and digging the vibration isolating trough, and so on.
Keywords: vibration; acceleration; frequency; vibration source