TRAIN TRACK-GROUND DYNAMICS DUE TO HIGH SPEED MOVING SOURCE AND GROUND VIBRATION TRANSMISSION

Abstract

The present paper has dealt with the train track-ground interaction vibration due to a moving load on the track and the induced ground vibration transmission alongside. The track is modeled by a bending beam. The ground is modeled by either a halfspace or stratum on a rigid base. First, the ground characteristic is investigated in the frequency-wave number domain for the wave propagation. Secondly the loading on the ground through interaction with the track is evaluated. Thirdly the transient track and ground vibration is computed to find drastically changed by the source moving speed Finally, the ground surface response is viewed versus the source moving speed. The findings from the above are useful for predicting the train induced vibration.