Study on Vibration Bounce Area Caused by Metro-Based on the Pulse Impact Experiment
At present,there is no systematic research on the ground surtace vibration bounce area induced by metro.The experiments of vibration attenuated on the ground surface were carded out in an underground laboratory at Beijing Jiaotong University to obtain the ground surface attenuation characteristics of vibration in 0~200Hz.The automatic falling weight device was designed for exciting a wide band vibration in the experiments.Vibration measurements were performed on the ground surface at distances varying from 0 to 60 m from the track at every 5m.Detailed results indicates that the attenuation of different single frequency acceleration peak value envelope decays wavy-type with peaks and valleys,and the attenuation of each single frequency is not the same.The ground surface vibration bounce positions depend on the main vibration frequency band of the vibration source and the propagation characteristics of the stratum.
pulse impact experiment automatic falling weight device vibration bounce area attenuation characteristic metro
Wenbin WANG Weining LIU Ning SUN Meng MA
Engineering Consulting Company Limited.,China Academy of Railway Sciences,China School of Civil Engineering,Beijing Jiaotong University,China
国际会议
沈阳
英文
839-843
2012-09-26（万方平台首次上网日期，不代表论文的发表时间）