Paper Information

Journal:   SCIENTIA IRANICA   SEPTEMBER-OCTOBER 2007 , Volume 14 , Number 5; Page(s) 385 To 394.
 
Paper: 

DYNAMIC RESPONSES OF RAILWAY SUSPENSION BRIDGES UNDER MOVING TRAINS

 
 
Author(s):  XIA H., XU Y.L., CHAN T.H.T., ZAKERI J.A.*
 
* SCHOOL OF RAILWAY ENGINEERING, IRAN UNIVERSITY OF SCIENCE & TECHNOLOGY, TEHRAN, I.R. IRAN
 
Abstract: 

This paper describes a numerical simulation technique that is used to investigate a dynamic train-long suspension bridge interaction. A three-dimensional finite element model is used to represent a long suspension bridge. Each vehicle of the train is modeled by a 27-degreesof- freedom dynamic system, including two bogies with four wheel-sets. By applying a mode superposition technique to the bridge and taking the measured wheel and track irregularities as known quantities, the degrees of freedom of the bridge-train system are significantly reduced and the coupled equations of motion are efficiently solved. The proposed formulation and the associated computer program are then applied to a real long suspension bridge. The dynamic responses of the bridge and the train vehicles are computed and compared with the limited measured data and the results are satisfactory.

 
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