Development of three-dimensional dynamic analysis model of high speed train-bridge interaction
Citation:
Van Nguyen Dinh, Ki Du Kim, Jae Soo Shim, Eun Soo Choi and Songsak Suthasupradit, Development of three-dimensional dynamic analysis model of high speed train-bridge interaction, Journal of the Korean Society of Steel Construction (KSSC), 20, 2008, 151 - 163Download Item:
Abstract:
A formulation of three-dimensional model of articulated train-bridge dynamic interaction has been made for the Korean eXpress Train (KTX). Semi-periodic profiles of rail irregularities consisting of elevation, alignment, cross and gauge irregularities have also been proposed using FRA maximum tolerable rail deviations. The effects of rail joints and sleeper step were also included. The resulting system matrices of train and bridge are very sparse, and, thus, are stored in one-dimensional arrays, yielding a time-efficient solution. A numerical algorithm for computing bridge-train response including an iterative scheme is also formulated. A program simulating train-bridge interaction and solving this problem using the new algorithm is implemented as new modules for the finite element analysis software named XFINAS. Computed results using the new program are then checked by that of the validated 2-D bridge-train interaction model. This new 3D
analysis provides more detailed train responses such as swaying, bouncing, rolling, pitching and yawing accelerations, which are useful inevaluating passenger riding comfort. Train operation safety and derailment could also be directly investigated by relative wheel displacements computed from this program.
Author's Homepage:
http://people.tcd.ie/nguyendvDescription:
PUBLISHED
Author: DINH, VAN NGUYEN
Type of material:
Journal ArticleSeries/Report no:
Journal of the Korean Society of Steel Construction (KSSC)20
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