Influence Of Vehicle-bridge Interaction On Slope Stability And Application Of Prestressing Cable In Reinforcement

Considering the vehicle-bridge interaction, under the dynamic force, the bridgevibrates very different from static load. Pavement roughness is one of the main factorswhich cause the vibration of the vehicles. In China, train's speed increases step bystep which requires a stable vehicle-bridge system and a strong foundation. So, theslope stability is very important to the vehicle-bridge system and it's necessary tostudy the response and stability of rock structure under dynamic load. In this paper,based on finite element method, Ansys is used to calculate several kinds ofvehicle-bridge-slope system. At the same time, it's pointed out that some problemshould be considered in practice.In this paper, the theory about vehicle-bridge interaction, material nonlinearityand dynamic finite element method are introduced. Rock element, boundary conditionand calculating region are discussed. In addition, the project, Lizigou bridge, isanalyzed and calculated by the way of 3D FEM numerical simulation. Beforecalculating, several vehicle model's advantages and disadvantages are introduced, andthen pavement roughness, vehicle speed, cohesive strength and friction angle areconsidered during the calculating. According to the result, different reinforced designsare put forward, and the effect of each design is evaluated.At last, some conclusions are pointed out through contrasting the static load anddynamic load.