Dynamic Response of High-Speed Train-Track-Bridge Coupling System Subjected to Simultaneous Wind and Rain

Hongye Gou, Wenhao Li, Siqing Zhou, Yi Bao, Tianqi Zhao, Bing Han, Qianhui Pu

Research output: Contribution to journalArticlepeer-review

25 Scopus citations

Abstract

The Lanzhou-Xinjiang High-speed Railway runs through a region of over 500km that is amenable to frequent winds. The strong wind and rainfall pose a great threat to the safe operation of high-speed trains. To tackle the aforementioned climate challenges, this paper investigates the dynamic response of the high-speed train-track-bridge coupling system under the simultaneous action of winds and rains for the safe operation of trains. Specifically, there are four main objectives: (1) to develop a finite element model to analyze the dynamic response of the train-track-bridge system in windy and raining conditions; (2) to investigate the aerodynamic loads posed to the train-track-bridge system by winds and rains; (3) to evaluate the effects of wind speed and rainfall intensity on the train-track-bridge system; and (4) to assess the safety of trains at different train speeds and under various wind-rain conditions. To this end, this paper first establishes a train-track-bridge model via ANSYS and SIMPACK co-simulation and the aerodynamics models of the high-speed train and bridge through FLUENT to form a safety analysis system for high-speed trains running on the bridge under the wind-rain conditions. Then, the response of the train-track-bridge system under different wind speeds and rainfall intensities is studied. The results show that the effects of winds and rains are coupled. The rule of variation for the train dynamic response with respect to various wind and rain conditions is established, with practical suggestions provided for control of the safe operation of high-speed trains.

Original languageEnglish
Article number2150161
JournalInternational Journal of Structural Stability and Dynamics
Volume21
Issue number11
DOIs
StatePublished - 1 Oct 2021

Keywords

  • Train-track-bridge coupling system
  • aerodynamic loads
  • coupling effect of wind and rain
  • dynamic response
  • operation safety

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