Simplified Analysis on Buffeting Response of Continuous Rigid Bridge at the Longest Cantilever Construction Stage

The continuous rigid frame bridge with high pier and large span is very flexible at the longest cantilever construction stage,and turbulence wind often brings the great buffeting responses,which is going to affect the structure itself and the safety of construction.According to the requirements of practical engineering,the buffeting response spectrum analysis method is simplified,and the applied formula also considering the effect of background response is presented.The reliability of applied formula is verified by the full-scale aero-elastic model in wind tunnel testing.