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无砟轨道过渡段刚度不连续,导致车辆和轨道结构系统动力学响应差别很大。针对这种情况,采用车辆—轨道系统动力学耦合模型分析方法,研究了设置橡胶浮置板无砟轨道过渡段对地铁车辆和轨道结构的动力学响应。算例结果表明,橡胶浮置板轨道过渡段的设置对地铁车辆和轨道系统产生较好的低动力响应,且使得轨面动位移变化平缓,同时降低了车体的振动加速度。
The discontinuity in the stiffness of the ballasted transition zone leads to great differences in the dynamic response between the vehicle and the orbital structure. In view of this situation, the vehicle-track system dynamics coupled model analysis method is used to study the dynamic response of the transitional section of ballastless track to the subway vehicle and track structure. The results of the example show that the setting of the transitional section of the rubber floating slab track has a good low dynamic response to the subway vehicle and the orbital system, and the dynamic displacement of the rail slab changes gently and the vibration acceleration of the vehicle body is reduced.