To ensure safe and stabile running of both passenger and freight trains on the same line, the relationship between train running safety and stability and track irregularities must be studied.
为了使客车和货车都能在同一线路上安全、平稳地运行，则必须对轨道不平顺与车辆运行平稳性和安全性之间的关系进行研究。
By simulating the track irregularities with trigonometric series method, the train-bridge coupling vibration equations are established based on the combined modal of train formation and the bridge.
利用三角级数法模拟了轨道的不平顺，采用列车编组和桥梁组合的模型，建立了车桥耦合振动方程。
By simulating the track irregularities with trigonometric series method, the train-bridge coupling vibration equations are established based on the combined modal of train formation and the bridge.
利用三角级数法模拟了轨道的不平顺，采用列车编组和桥梁组合的模型，建立了车桥耦合振动方程。
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