In this paper a theoretical model that incorporates the concept of the cohesive interface approach for the debonding analysis of rein-forced concrete beams shear strengthened with externally bonded Fiber Reinforced Polymer(FRP)is presented. Numerical results that examine the capabilities of the model,provide insight into the characteristics of the debonding mechanism. In addition,numerical simulations are pre-formed to discuss the factors influencing the FRP strain distribution factor and the theoretical derivations are validated by experimental data.%提出了一个合并了剪力加强的钢筋混凝土梁的结合界面脱离方法分析与外部粘合 FRP 概念的理论模型，通过检验该模型性能的数值结果，提出了脱胶机理，并讨论了影响 FRP 应力分布的因素以及由实验数据确认的理论派生。
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