Hydrodynamic Effect and Seismic Response Analysis of Bridge with Complex Pier Submerged in Reservoir

In order to clarify the hydrodynamic effect and seismic response of a continuous beam with 4-column pile column frame pier, the bridge-water coupling numerical model is established. The effects of wave, current and water depth on the seismic response are analyzed. Analysis of flow around pier shows that the velocity field and pressure field of each column are asymmetric. Compared with the seismic response under condition of no-water, the seismic response under still water condition is greater. The seismic responses under wave and current environment are not the superposition of dynamic response under the action of earthquake, wave and current.