Seismic performance analysis of a large-span RC arch bridge

Through the analysis of FEA model of the whole bridge and dynamic test of main span 220m Xu Gou bridge,the dynamic characters of reinforced concrete box rib arch bridge are analyzed,at the same time the seismic waves of 50 year exceedance probability of 3% and El Centro(be regulated to 7degree) are used for time history analysis of the structure.The results of the seismic analysis are compared with the real bridge dynamic test,usmich are used for determining key section seismic internal force,and the synthesis evaluation of the bridge seismic performance is carried out,thus the advices for arch bridge seismic design are put forward.