Simulation of Track Vibration Due to Moving Load by Using 2.5D Finite Element Method

摘要

A numerical model is established for prediction track-embankment vibration due to moving harmonic load on the basis of the two-and half dimensional(2.5D)finite element(FE) method.This model allows the arbitrarily shaped cross-section of the track-embankment system only if the system can be assumed as homogeneous along the track direction.Influences of height of embankment on the track vibration are analyzed and some useful conclusions are gained.Comparing with the conventional 3D FE model,the computation efficiency of the 2.5D FE model is very higher.