DOI QR코드

DOI QR Code

Vehicle/bridge interactions of a rail suspension bridge considering support movements

  • Yau, J.D. (Department of Architecture, Tamkang University)
  • 투고 : 2009.04.02
  • 심사 : 2009.05.29
  • 발행 : 2009.09.25

초록

This paper is intended to investigate interaction response of a train running over a suspension bridge undergoing support settlements. The suspension bridge is modeled as a single-span suspended beam with hinged ends and the train as successive moving oscillators with identical properties. To conduct this dynamic problem with non-homogeneous boundary conditions, this study first divides the total response of the suspended beam into two parts: the static and dynamic responses. Then, the coupled equations of motion for the suspended beam carrying multiple moving oscillators are transformed into a set of nonlinearly coupled generalized equations by Galerkin's method, and solved using the Newmark method with an incremental-iterative procedure including the three phases: predictor, corrector, and equilibrium-checking. Numerical investigations demonstrate that the present iterative technique is available in dealing with the dynamic interaction problem of vehicle/bridge coupling system and that the differential movements of bridge supports will significantly affect the dynamic response of the running vehicles but insignificant influence on the bridge response.

키워드

과제정보

연구 과제 주관 기관 : National Science Council

참고문헌

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