建立了一个用于估算FPR加固混凝土轴心抗压强度的数学模型 ,该模型引入了FRP强度发挥系数 (套箍发挥系数 ) .实验结果表明 ,混凝土达到极限强度时 ,FRP并未达到极限强度 ,其强度发挥系数在 0 .2 8～ 0 .5 9之间 ,与FRP的弹性模量有关 .该计算方法可用于估算FRP加固混凝土的轴心抗压强度 ,其理论计算强度高于实测强度 10 %～ 30 % ,偏差主要来自FRP与混凝土的界面粘结状况不理想及混凝土抗压强度数据的离散性等 . A mathematical model for estimating the compressive strength of FPR reinforced concrete was established, which introduced the FRP strength coefficient (ferrule play coefficient) .The experimental results show that FRP does not reach the ultimate strength when the concrete reaches the ultimate strength, Its strength coefficient is between 0.8 ~ 0.59, which is related to the elastic modulus of FRP. The calculation method can be used to estimate the axial compressive strength of FRP reinforced concrete. The calculated theoretical strength is higher than the measured strength of 10 % ~ 30%, the deviation mainly comes from the unsatisfactory interfacial bonding between FRP and concrete and the discreteness of compressive strength data of concrete.