Numerical Simulation Study on the Impact Effect of Rolling Stone to High Hollow Thin Wall Pier

The finite element software ANSYS/LS-DYNA was used to study the impact effect of rolling stone to hollow thin-walled high pier. By changing the rock mass, velocity, impact position to obtain the maximum force of collision, the rock mass and velocity are two important factors that affect collision impact force, and the impact position has little influence on the impact force. The pier appears to be local failure mainly, when the impact position in the central pier, little influence on the pier as a whole, and when the position is in the upper and the bottom part of the pier, due to the large local impact force will influence on the bridge superstructure and substructure respectively.(1)