An Explanation on Mechanism of Local Amplification in Attenuation of Ground Vibration from Rail Traffic in Urban Area
The mechanism of local amplifying on attenuation of ground vibration from urban rail traffic is deal with by Zheng et al (2011).The vertical vibrations on ground points of a model with single soil layer overlaid on elastic half-space is calculated with transfer matrix method in frequency domain.The results show that the amplification could be simulated well by the calculation, and the location and degree of the amplification are govemed by the ratio between shear modulus of the the overburden layer and the half space, the thickness and damping ratio of soil layers.It is further pointed out in this paper that the most significant factor is the impedance ratio at the buried velocity interface.Then the mechanics is explained as the meeting of the directly arriving surface wave and the reflected and refracted waves from the interface.
vibration urban rail traffic attenuation local amplification reflection
Haiming Liu Xiaxin Tao Xin Zheng Futong Wang
State Key Laboratory of Bridge Structural Dynamics,China Merchants Chongqing Communication Research Harbin Institute of Technology,Harbin,150090,China
国际会议
上海
英文
392-395
2012-10-19（万方平台首次上网日期，不代表论文的发表时间）