DYNAMIC RESPONSE AND ISOLATION PERFORMANCE ANALYSIS OF FRICTION PENDULUM BEARING

Finite element dynamic analysis model was established in order to research seismic performance of bridge,by using time history analysis with typical seismic wave input,it can get results of quantitative analysis on performance parameter of FPB. The results of simulation used Abaqus agree well with that of theoretical analysis; FPB has favorable hysteretic property according to its plump hysteretic curve; The maximum horizontal displacement and earthquake acceleration peak is approximately linear relationship,it needs to install limiting device and control residual displacement; slideway radius has a great influence on maximum horizontal displacement when μ≤0. 06; When initial state is located in the largest residual displacement,maximum horizontal displacement increase when friction coefficient and slideway radius increase; Optimum friction coefficient range is 0. 02 ~ 0. 03、0. 04 ~ 0. 05、0. 06 ~ 0. 07 in 7、8、9 degrees fortification area,in order to meet the requirement of maximum displacement and avoid sticking phenomenon.