EFFECT OF SUB-RAIL PARAMETERS TO THE METRO DYNAMIC RESPONSE DUE TO MOVING TRAIN

摘要

With the development of metro, the vibration and noise induced by metro trains have been paid more and more attention. In this paper, an algorithm is tried to study the transmission rule of the vibration. Firstly, a space due to underground moving loads is a-dopted as the model of the metro. The dynamic response of a point ξ is expressed as the periodic analyze solution. Secondly, combined with numerical computation, the dynamic response of a point ξ in the ground surface is given; Finally, the effect of sub-rail parameters to the dynamic response of ground due to metro train are calculated and analyzed in time domain and frequency domain.