【摘要】 研究了CFRP约束插槽式双柱墩的抗震性能，利用ABAQUS软件建立考虑了钢筋循环退化效应的桥墩模型，重点分析了CFRP的厚度和约束范围对桥墩抗震性能的影响。在横向地震荷载作用下，双柱墩发生弯曲破坏，基础和盖梁的塑性铰区混凝土被压碎。CFRP厚度增加，混凝土的被动约束增强，桥墩的屈服荷载、极限荷载和耗能等抗震性能指标提高，且残余位移减小；CFRP约束在塑性铰区比约束在非塑性铰区，抗震性能改善显著。更多还原

【Abstract】 In this paper, the seismic performance of slotted double column pier restrained by CFRP is studied. The pier model considering the cyclic degradation effect of reinforcement is established by using ABAQUS software, and the influence of CFRP thickness and restraint range on the seismic performance of pier is analyzed. Under the action of transverse seismic load, the double column pier is bent and damaged, and the concrete in the plastic hinge area of the foundation and bent cap is crushed. With the increase of CFRP thickness, the passive restraint of concrete is strengthened, the seismic performance indexes such as yield load, ultimate load and energy dissipation of pier are improved, and the residual displacement is reduced; The seismic performance of CFRP confined in plastic hinge area is significantly better than that confined in non plastic hinge area.更多还原