Considering the Dynamic Response of Transverse and vertical Vehicle-bridge Coupled Curved Bridge

Abstract

In order to explore the dynamic response of curved bridge under the coupling action of transverse and vertical vehicle-bridge, a three-span concrete continuous curve bridge model and a vehicle model are established by using the finite element software ANSYS. The coupling action of transverse and vertical vehicle-bridge is simulated by using the equilibrium and geometric coordination conditions of the forces between the two models, and the transversevibration of the vehicle model is considered. The dynamic response of curved bridge is studied by establishing the dynamic model of vehicle-bridge interaction. The results show that the maximum transverse force of 1# mid-span section increases by 1.43% under the action of 70t vehicle weight compared with that without considering the coupling effect of transverse and vertical vehicle-bridge; and the maximum transverse displacement of 1# mid-span section increases by 10.25% compared with that without considering the coupling effect of transverse and vertical vehicle-bridge. Therefore, it is necessary to take into account the vehicle-bridge coupling in the dynamic response analysis of curved bridges; the transverse displacement of curved bridges can be prevented by limiting load and weight.