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Article Navigation >  Journal of Traffic and Transportation Engineering  > 2012  >  12(5): 22-27
LI Yong-le, LI Xin, XIANG Huo-yue, LIAO Hai-li. Coupling vibration of wind-vehiche-bridge system for long-span steel truss cable-stayed bridge[J]. Journal of Traffic and Transportation Engineering, 2012, 12(5): 22-27. doi: 10.19818/j.cnki.1671-1637.2012.05.003
Citation: LI Yong-le, LI Xin, XIANG Huo-yue, LIAO Hai-li. Coupling vibration of wind-vehiche-bridge system for long-span steel truss cable-stayed bridge[J]. Journal of Traffic and Transportation Engineering, 2012, 12(5): 22-27. doi: 10.19818/j.cnki.1671-1637.2012.05.003
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Coupling vibration of wind-vehiche-bridge system for long-span steel truss cable-stayed bridge

doi: 10.19818/j.cnki.1671-1637.2012.05.003

  • School of Civil Engineering, Southwest Jiaotong University, Chengdu 610031, Sichuan, China

More Information
  • Author Bio:

    LI Yong-le(1972-), male, professor, PhD, +86-28-87601119, lele@swjtu.edu.cn

  • Received Date: 2012-05-08
    Abstract
  • A long-span road-rail steel truss cable-stayed bridge was taken as an engineering example, the aerodynamic coefficients of vehicle and bridge at different states were measured through wind tunnel test with the section models of vehicle and bridge. Wind-vehicle-bridge system was simulated at different wind speeds, vehicle speeds and vehicle load states by using the self-developed software BANSYS. The influences of vehicle position and two trains passing each other on the system were discussed. Computation result shows that wheel load reduction rate exceeds safety limit value when vehicle speed is up to 100 km·h-1 and wind speed is 25 m·s-1. When vehicle speed is up to 120 km·h-1, vehicle vertical acceleration exceeds comfortable limit value. When wind speed is higher, the wheel load reduction rate of vehicle running on windward side is the control factor for wind-vehicle-bridge system. The unloaded vehicle response is larger than overcrowded vehicle. Due to the wind shielding effect for windward side vehicle, transverse accelerations change suddenly at the beginning and ending of the process for two trains passing each other.

     

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