Vibration analysis of a steel truss bridge with random track irregularities under a moving train load

Dong Ho Choi, Di Mu, Hani Nassif

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

This paper deals with the dynamic response of a truss bridge under a single moving train. A planar finite element model of a train-bridge system is used. The train is divided into one-foot sprung masses. The bridge is modelled as frame and truss elements. Vertical random track irregularities are generated by power spectrum density functions. The dynamic equations of motion of the train and the bridge are coupled by the shape constraints and contact forces. The interaction dynamic equation of motion is solved by the Newmark-beta and Newton-Raphson method. The dynamic response of a steel truss bridge with track irregularities under a KTX train is calculated as an example. The dynamic impact factors for different bridge nodes are evaluated and compared with different train speeds and track irregularities conditions.

Original languageEnglish
Title of host publicationEngineering for Progress, Nature and People
PublisherInternational Association for Bridge and Structural Engineering (IABSE)
Pages609-613
Number of pages5
ISBN (Electronic)9783857481352
StatePublished - 2014 Jan 1
Event37th IABSE Symposium on Engineering for Progress, Nature and People - Madrid, Spain
Duration: 2014 Sep 32014 Sep 5

Publication series

NameEngineering for Progress, Nature and People

Other

Other37th IABSE Symposium on Engineering for Progress, Nature and People
CountrySpain
CityMadrid
Period14/09/314/09/5

Keywords

  • Dynamic impact
  • Finite element method
  • Train-bridge interaction
  • Truss bridge

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  • Cite this

    Choi, D. H., Mu, D., & Nassif, H. (2014). Vibration analysis of a steel truss bridge with random track irregularities under a moving train load. In Engineering for Progress, Nature and People (pp. 609-613). (Engineering for Progress, Nature and People). International Association for Bridge and Structural Engineering (IABSE).