To analyze the influence of CFRP (Carbon Fiber Reinforced Polymer) reinforcement ratio and CFRP sheet on the self-centering performances of concrete circular columns, five concrete circular columns were tested under the low-cyclic reversed load in this work. The five concrete circular columns included 1 RC (Reinforced Concrete) column, 2 CFRP bars reinforced concrete circular columns and 2 CFRP bars reinforced concrete circular columns with CFRP sheet strengthening partially. The hysteretic curves, skeleton curves, stiffness degradation, strength degradation, residual deformations, energy dissipation and ductility of the five circular columns were obtained and analyzed to verify the improvement of the seismic performances of the specimens reinforced with CFRP bars and CFRP sheets. At the same time, the reference opinions for practical applications of CFRP bars and CFRP sheets in structures can be provided. The test results showed that the bearing capacity and deformation capacities of the concrete circular columns reinforced with CFRP bars were 25.5% and 25% higher than that of the RC column, respectively. The deformation capacities, energy consumption capacities and deformation recovery capacities of CFRP bars reinforced concrete circular columns with CFRP sheet strengthening partially were 21.5%, 40% and 78.5% higher than that of the RC column, respectively.

为了分析CFRP（碳纤维增强聚合物）的增强比和CFRP薄板对混凝土圆柱自对中性能的影响，本工作在低周向反向荷载下测试了五根混凝土圆柱。5根混凝土圆柱包括1根RC（Reinforced Concrete）柱、2根CFRP钢筋钢筋混凝土圆柱和2根CFRP钢筋钢筋混凝土圆柱，部分采用CFRP板加固。获得并分析了5个圆柱的滞回曲线、骨架曲线、刚度退化、强度退化、残余变形、耗能和延性，验证了CFRP筋和CFRP板加固试件抗震性能的提高。同时，可提供CFRP筋、CFRP板在结构中实际应用的参考意见。试验结果表明，用CFRP筋加固的混凝土圆柱的承载力和变形能力分别比RC柱高25.5%和25%。CFRP片材加固的CFRP钢筋混凝土圆柱的变形能力、能耗能力和变形恢复能力分别比RC柱高21.5%、40%和7​​8.5%。