关键词: 桥墩, 纤维增强复合材料, 拟静力试验, 抗震性能, 矩形空心截面

Abstract: In order to estimate the anti-seismic performance of FＲP-confined ＲC bridge pier with hollow section，five unconfined and confined bridge piers with rectangular hollow section were designed and established． And then quasi-static experiment was carried out under constant axial compression and unidirectional horizontal reversal load． Comparing hysteretic curves，lateral force and ductility as well as energy dissipation of different specimen piers，it is shown that through confining plastic hinge region of the tested bridge pier by FＲP，lateral rigidity and ultimate displacement are increased; energy dissipation and ductility are improved． However，it has more considerable effective ductility than load capacity． Besides，variation trend of dissipation coefficient is different with total energy dissipation． Therefore，dissipation energy coefficient and total energy dissipation should be considered at the same time to estimate energy dissipation ability of ＲC hollow section bridge pier．

Key words: bridge pier, FＲP, quasi-static test, anti-seismic performance, rectangular hollow section．