建立了适合车辆任意变速运动与任意路面不平函数的弹性支撑桥梁耦合系统的无量纲运动微分方程。
The dimensionless differential equations of motion of a coupled system consisting of an elastically supported bridge with arbitrarily uneven surface and a vehicle with varying speeds, are derived.
而对车辆-桥梁这种复杂的耦合系统进行随机分析，历来被认为是一件非常困难的工作。
However, it is well know that the random vibration analysis of vehicle-bridge coupling system is a very difficult problem.
文章按七种不同的车辆模型计算了列车分别以五种不同的速度过桥时桥梁的空间动力响应以及列车在桥上不同位置时车-桥系统的自振频率和振型。
Seven kinds of different vehicle models are used to calculate the space dynamic responses of the bridge on which a train moves at five different speeds.
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