Abstract
Based on the structural dynamics theory, the fluid-solid coupling dynamic equation of ice-water-bridge pier is established. Taking a bridge pier surrounded by ice as the research object, the dynamic response of the pier in different types of earthquakes was studied. The results show that, in different earthquake conditions, the pier top displacement, acceleration and hydrodynamic pressure without ice are smaller than that with ice, and increases with the increasing of ice thickness. Bending moment and shear of pier bottom are also increased with the increasing thickness of the ice. They are both biggest under the action of T2-II-1 seismic wave, but the bending moment and shear rate of change are biggest under the action of El-Centro seismic wave, respectively 494.51% and 374.76%.
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