Nonlinear analysis of high-speed trains moving on bridges during earthquakes

This paper investigates the derailment of high-speed trains moving on multispan simply supported bridges. A moving wheel finite element containing contact and separation modes was developed to simulate vehicle–bridge interaction problems under seismic loads. Rail irregularities and bridge–rail–train...

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Bibliographic Details
Published in:Nonlinear dynamics 2012-07, Vol.69 (1-2), p.173-183
Main Author: Ju, S. H.
Format: Article
Language:English
Subjects:
Automotive Engineering
Bridge loads
Bridges (structures)
Classical Mechanics
Control
Derailments
Dynamical Systems
Earthquake loads
Engineering
Finite element method
Girder bridges
Girders
High speed rail
High speed trains
Mathematical analysis
Mechanical Engineering
Nonlinear analysis
Nonlinearity
Original Paper
Railroad transportation
Seismic engineering
Seismic phenomena
Seismic response
Trains
Vibration
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Summary:This paper investigates the derailment of high-speed trains moving on multispan simply supported bridges. A moving wheel finite element containing contact and separation modes was developed to simulate vehicle–bridge interaction problems under seismic loads. Rail irregularities and bridge–rail–train interactions were appropriately considered in the nonlinear finite element analysis, which indicates that the derailment coefficients are enlarged with the increase of train speeds for high-speed trains moving on multispan simply supported bridges. The accelerations of elevated bridge girders may be significantly magnified during the seismic load; moreover, gaps between simply supported girders during seismic loads will produce large derailment coefficients.
ISSN:0924-090X
1573-269X
DOI:10.1007/s11071-011-0254-5