Taking steel box tied-arch bridge scheme of Jinsha River Bridge on Chengdu-Guiyang passenger dedicated railway as study object, the refined numerical simulation model of whole vehicle and whole bridge system for coupled vibration analysis is set up. The dynamic analysis model of tied-arch bridge scheme is established by finite element method, and the natural vibration properties of the bridge are analyzed. The refined space vehicle model is set up by multi-system dynamics software SIMPACK, and the multiple non-linear properties are considered. The space vibration responses are calculated by co-simulation based on multi-body system dynamics and finite element method when an ICE Electric Multiple Unit (EMU) train passes the long span tied-arch bridge at different speeds. The calculation results show: The operation safety and comfort of vehicle can be guaranteed, and the bridge has sufficient transverse and vertical stiffness when the train operates at speeds ranging from 250km/h to 350km/h. The results provide a reference for design.
展开▼
