2.5-D FEM APPLICATION FOR PREDICTING TRACK-GROUND VIBRATION DUE TO HIGH-SPEED TRAIN AND MITIGATION BY WIB PROCEDURE

Abstract

This paper has dealt with the train-induced vibrations through the track and ground interaction under a moving train. The solution method is to apply the 2.5 dimensional finite element method (2.5-D FEM). The X-2000 of the Swedish National Railway was chosen for the model for analysis; since the measurement data are available for comparison besides a unique response features were observed. At a soft ground, the high-speed operation led the so-called transeismic range that resulted in significantly large vibrations of the track and nearby ground. With the aid of computer simulation, the authors interpret the mechanism for vibration generation and propagation that facilitate the prediction and mitigation when the WIB (Wave Impeding Barrier) measures are taken at the site.