SIMULATION OF DAMAGE FOR BRIDGE PIER SUBJECTED TO SHIP IMPACT

A review is made for HJC concrete model which includes strain rate effects and material damage. Sensitivity of damage parameters in HJC model are discussed through a collision of a rigid ball with a concrete plate, and the parameters used in HJC concrete model are determined. A scenario of a 12000 DWT bulk cargo collision with a bridge pier is simulated by the software of LS-DYNA, and the time history of ship collision force and the damage of the bridge pier are presented. The results show that the peak value of ship collision force decreases remarkably due to the failure of concrete. Damage characteristic of concrete should be taken into account to achieve objective result in the simulation of ship collision with thin-wall bridge pier.