Post-Member-Failure Analysis Method of Steel Truss Bridge

Partial failure of a bridge may or may not lead to further damage or even to the collapse of the entire bridge. The difference arises from the redundancy of the bridge, and this issue attracts many researchers and engineers in recent years. Herein the post-member-failure analysis method of a steel truss bridge is studied. For the investigation of redundancy, simple analysis is preferred since a number of analyses are required in general. However, the present study reveals that static analysis yields quite different result from that due to dynamic analysis. A post-member-failure analysis method is then proposed. Example problem confirms the effectiveness of the proposed method while it requires computational time only as much as the static analysis does.