Research on push-over method for earthquake-resistant performance of jacket offshore Platforms

According to the earthquake damage research status of offshore structures, we introduce the pushover method and established the offshore structures particle calculation model. Based on the horizontal earthquake peak acceleration and elastic response spectrum, we establish the inelastic acceleration response spectrum and the inelastic demands spectrum under the different kind of site and different strength earthquake. A comparison of the structure capacity curve between nonlinear static pushover analysis method and dynamic time-history analysis method is made through an example, which proves that the pushover method is feasible in the evaluation of Marine structural anti-seismic performance. All of above will be useful for the analysis of offshore engineering anti-earthquake performance.