Vertical displacement behaviors of rubber bearings in composite bridges under passage of high speed trains and there influences on train runnability

Abstract

Many rubber bearings have been applied to railway steel and composite bridges. However, in the bridges where the rubber bearings were applied, it is concerned that the vertical displacement of the rubber bearings and resonant bearing vibration with the vibration of girder affect the train runnability such as running safety and riding comfort.
This study aims to reveal the influences of vertical displacement behavior of rubber bearings on the train runnability. Firstly, vertical displacement behavior under train passage was obtained by measurements in an actual railway composite bridge. Based on the results, the influences on train runnability were discussed by simulation analyses considering vehicle-bridge interaction at 27 railway steel and composite bridges.