基于SIMPACK和ANSYS联合仿真的胶粘道砟过渡段动力学特性研究

摘要

In order to study the dynamic characteristics of the bonded ballast transition section,a complete transition section is established to connect three different track structures of ballastless track,bonded ballast and ballast track based on SIMPACK and ANSYS co-simulation and a vehicle-track spatial coupling analysis model is formed to study systematically the dynamic characteristics of the transition section of the bonded ballast and address the influence of the speed.The results show that the transition section of the bonded ballast can make the track stiffness transition smoothly,but the acceleration may change drastically when the train runs from the ballastless track to the bonded ballast.Therefore,the damping fastener in the ballastless track near the bonded ballast transition section is recommended.%为了研究胶粘道砟过渡段动力学特性,基于SIMPACK和ANSYS联合仿真,建立将无砟轨道、胶粘道砟、有砟轨道三种不同轨道结构连接起来的完整过渡区段,组成车辆-轨道下部基础空间耦合分析模型,对胶粘道砟过渡段的动力学特性进行系统研究,并探讨速度的影响.结果表明:胶粘道砟过渡段能够使轨道刚度平顺过渡,但列车从无砟轨道运行到胶粘道砟过渡段时加速度仍会剧烈变化,所以建议在靠近胶粘道砟过渡段的无砟轨道采用具有一定减振作用的扣件.