连续支承条件下轨道位移波的动力特性分析

Dynamic Analysis of Track Wave Propagation Supported on Continuo us Elastic Foundations

建立了列车与连续支承轨道耦合振动的动力学模型 ,通过计算模拟了高速列车作用下所出现的轨道位移波现象。分析了轨面不平顺波长、轨道质量、刚度、阻尼等参数对轨道临界速度及位移波的影响。

A dynamic analysis mode l is proposed for the train/track system supported on continuous elastic foundat ions. The track wave propagation problem under a high speed train is studied. T he influences of some parameters, such as rail surface irregularity wavelength, track mass, track rigidity and track viscosity, on the critical speed and the tr ack wave propagation are analyzed.