STUDY ON COASTAL BRIDGE DAMAGE UNDER THE ACTION OF EXTREME WAVE

In order to research the catastrophic damage problem of coastal bridge under the action of extreme wave, combine the numerical simulation with tank experiment and based on RANS and k - epsilon equation, a bridge-wave interaction model is established. The free surface locations in the model are represented by the Volume of Fluid method. Confirmed the wave parameters and the cross-section form of the girder bridge of tank experiment reference the Pingtan Straits Rail-cum-Road Bridge and the Hong Kong-Zhuhai-Macau Bridge. The tank experiment was conducted for verification of the calculations of numerical simulation. The simulation results show that the constraint conditions between the box girder and pier has an important influence in horizontal translocation damage of the box girder under the extreme wave. With increasing the submerged coefficient, the buoyancy force increases first and the decreases. With increasing the submerged coefficient, the horizontal force decreases.