In connection with the train running, the track-subgrade being regarded as a part of the vibration structure of vehicle model, a vehicle-subgrade model of vertical coupled system has been established.

• 针对列车走行的实际情况，将轨道-路基作为参振子结构纳入车辆计算模型，建立了车辆-路基系统的垂向耦合动力分析模型。