Abstract A transient large-amplitude car-body vibration could seriously affect train operational safety and riding comfort when a high-speed train passes through a complex terrain under strong wind conditions. In this study, according to the car-body vibration characteristics under strong wind conditions and the definition of the train overturning coefficient, a railway half-vehicle vibration-overturning analytical model is developed and a formula for the evaluation of the overturning coefficient known the car-body vibration parameters (mainly car-body roll angle lateral displacement) is obtained. Moreover, the formula validity is verified by multi-body nonlinear numerical code simulations and full-scale tests. The results show that the train operational safety under strong wind conditions can be evaluated with a good approximability using the roll angle and the lateral displacement of the center of gravity of the car-body, and the train overturning coefficient calculated using the formula proposed in this paper is well correlated with the overturning coefficient directly measured by instrumented wheelset, and the value amplitude was nearly the same.

中文翻译：

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强风条件下车体振动与列车倾覆的相关性

摘要 高速列车在强风条件下穿越复杂地形时，瞬态大振幅车体振动会严重影响列车运行安全和乘坐舒适性。本研究根据强风条件下的车体振动特性和列车倾覆系数的定义，建立了铁路半车振动倾覆分析模型和已知车体倾覆系数的评价公式。 -车身振动参数（主要是车身侧倾角横向位移）。此外，通过多体非线性数值模拟和全尺寸试验验证了公式的有效性。