列车高速通过桥梁时的车桥耦合振动分析

Coupled Vibration of Vehicles and Bridge When Training Passing Bridges in High Speed

当车辆以一定速度通过桥梁时,使桥产生振动、冲击等动力效应。而桥梁的振动又反过来影响车辆的振动。这种相互作用、相互影响的问题,就是车辆与桥梁之间的振动耦合问题。为了准确分析车桥之间的相互作用,通过建立车轮加弹簧—阻尼器—簧上质量简支梁的动力分析模型,模拟车辆变速过桥,根据模态综合法给出了车桥系统动力平衡方程。

When vehicles passing bridges in certain speed, bringing the bridge with effect of vibration and shock., in turn, the movement will affect the vibration of vehicles. The problems of such interact and affection is the coupled vibration between vehicles and bridges. To accurately analyze the interaction of vehicles and bridges, the essay contributed the vehicles＇ and bridges＇ dynamic balance equation in accordance with component mode synthesis by establishing dynamic analysis model of wheels plus spring - damper- simple beam bridge to stimulate vehicles＇ speed variation.