Analysis on Effect of Bearing Types on Continuous Girder Bridges under Ship Collision

After analyzing the existing simplified methods of ship-bridge collision and comparing their pros and cons, a relatively safe simplified analysis process is put forward. The time-history curve of the ship collision force obtained from the ship-rigid wall collision simulation using the software LS-DYNA is put into the whole bridge dynamic model in SAP2000 and then dynamic response analysis of the whole ship has been carried on. Respect to the bridge with ordinary fixed bearings and seismic isolation bearings, the influence of the bearing type on the key structure of the bridge are analyzed. Then the features and rules of the continuous bridges dynamic responses with different bearings under different ship-bridge collision angle and velocity are obtained.