Abstract：The dynamic interaction of pile-soil-bridge system is the hot spot and challenging scientific question，and the flexible foundation effect and kinematics interaction effect as well as foundation damping effect should be reasonably considered. In this paper, by the introduction of seismic demand spectrum modification algorithm of the kinematics interaction effect and foundation damping effect from FEMA440, a seismic performance evaluation method which could take into account effectively the three kinds SSI effects of Pile-foundation RC Girder Bridges was developed based on nonlinear static analysis method. With a highway RC continuous girder bridge as example, the nonlinear static and dynamic analysis was conducted respectively for the aim of comparison with three kinds of design spectrums and corresponding artificial wave as input. The results of two earthquake levels shows that the seismic response of advised method is slightly smaller than dynamic analysis, and the modified capacity spectrum method can be use in evaluating the seismic performance of pile-foundation bridge under anticipated earthquake demand.
2012, Vol. 31 
