Derailment of trains moving on lead rubber bearing bridges under seismic loads

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This study investigates the derailment of trains moving on bridges with lead rubber bearings. A moving wheel/rail axis element that couples two wheels and rails together is first developed to generate a train finite element model with 12 cars, while the sliding, sticking, and separation modes of the wheels and rails are accurately simulated. The finite element results indicate that the base shear of the bridge with lead rubber bearings is much smaller than that without lead rubber bearings. Similar to the base shear, the train derailment coefficients for the bridge with lead rubber bearings are much smaller than those without lead rubber bearings because yield lead rubber bearings during large seismic loads can change the bridge natural frequency to avoid resonance. For earthquakes with a very long dominant period, the lead rubber bearing effect to reduce the train derailment may not be obvious because the natural period of the bridge due to the full yield of lead rubber bearings can approach the dominant period of the earthquake.

頁(從 - 到)1646-1655
期刊JVC/Journal of Vibration and Control
出版狀態Published - 2020 10月 1

All Science Journal Classification (ASJC) codes

  • 汽車工程
  • 材料科學(全部)
  • 航空工程
  • 材料力學
  • 機械工業


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