Static and Dynamic Response Comparison Analysis of Cable-stayed Bridge under Vessel Collision Load

The response of cable-stayed bridge under vessel collision load by dynamic and static analysis was analyzed with the maximum and the local average and the global average of the dynamic time history of ship impact as the equivalent static load.After comparison of the results it could be obtained that the response of cable-stayed bridge was different when different methods were applied.It was suggested that the cable-stayed bridge crossing the navigable river should be designed by dynamic analysis under vessel impact so as to get the displacement and force response accurately.