3d numerical simulation of sea-cross bridge pier wave current force considering local scour effect

Abstract

The combined force of wave and current is the key load to the foundation of the sea-cross bridge, which is directly related to the design scale. Local scour pits are quickly formed after the piers enter the water, so the influence of local scour pits on the wave current force should be taken into account. Typical bridge pier structure is selected as the research object by the project of Yushan Bridge. Physical model test was applied to research the wave current force on the current terrain. Through the application of Fluent -3D, the mathematical model was established, and the model was verified by the test results. By using the 3D mathematical model, the wave current force considering the bridge pier local scour was calculated to provide technical support for the design of the bridge.