The Effect of Longitudinal Shock Absorber on the Vibration Response of Train-Bridge Coupling System in the Articulated Train

On the basis of analyzing the structural characteristics of articulated trains, directly combined with the method of UM software and importing three-dimensional model into the UM software, the dynamics model of the vehicle-bridge coupling system of three-section articulated train and the simple-supported box girder bridge is established. The dynamics model compares the vehicle-bridge coupled vibration response of the articulated train with or without longitudinal shock absorber and analyses the difference. The results show that the vertical vibration of the end train is stronger than that of the intermediate train; the longitudinal shock absorber can effectively suppress the vibration of the intermediate train body of the articulated train, and the vibration suppression effect on the end body is not obvious; the strength of the coupling effect has little effect on the vertical vibration of the bridge.