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A Comparative Study on Vertical Dynamic Responses of Three Types of Elevated Railway Tracks Subjected to a Moving Train

Author

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  • Li Shi
  • Xiaoqiang Ye
  • Pengfei Zhang
  • Lin Guo

Abstract

A theoretical model incorporating the moving train, the railway track, and the elevated viaduct is established and then solved using periodic theory in this paper. The vertical wheel/rail forces and the dynamic responses of track and viaduct girder are obtained and compared for three different types of tracks, i.e., the double-block ballastless track, the rubber-pad floating slab track, and the steel-spring floating slab track. It is observed that the rubber-pad and steel-spring floating slab tracks can reduce more than 10% of the wheel/rail force and the reaction force at girder supports, when compared to those of the double-block ballastless track. Especially, the steel-spring floating slab track develops an uplifting force larger than the installation force of the fastening clip, which may cause failure of the rail fastening system.

Suggested Citation

  • Li Shi & Xiaoqiang Ye & Pengfei Zhang & Lin Guo, 2019. "A Comparative Study on Vertical Dynamic Responses of Three Types of Elevated Railway Tracks Subjected to a Moving Train," Mathematical Problems in Engineering, Hindawi, vol. 2019, pages 1-11, August.
    • Handle: RePEc:hin:jnlmpe:3290958
    DOI: 10.1155/2019/3290958
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