HB-FRP布加固混凝土的多接触界面组合作用导致其界面粘结性能较为复杂。在试验研究基础上，建立了考虑混凝土塑性损伤、界面粘结的HB-FRP加固数值计算模型；对比分析了荷载-滑移关系、界面应变分布、粘结滑移关系和界面破坏形态；进行了FRP层数和钢扣件间距的参数分析。研究结果表明：数值计算模型能可靠的反映HB-FRP加固界面粘结特性，HB-FRP加固能够有效抑制剥离发展；钢扣件位置粘结滑移关系呈现典型弹性上升、软化下降、残余平台的三段线特征，粘结应力最后趋于稳定而不是降为零；钢扣件位置的破坏面呈“楔形”，剥离厚度大于普通FRP粘结部位；FRP厚度超过5层后张拉承载力才开始增加；张拉承载力不会随着钢扣件间距的减小而持续增加，钢扣件间距为250mm时，能够充分发挥HB-FRP加固模式的加固效率，为等厚度普通FRP粘结的4.2倍。

The combined effect of various contact interfaces of HB-FRP reinforced concrete leads to more complex interfacial bonding properties. Based on the experimental study, the HB-FRP numerical model was established which considering the plastic damage of concrete and interfacial bonding. The load-slip relationship, the interface strain distribution, the bond-slip relationship and the interfacial failure mode were compared and analyzed. The relationship between the number of FRP layers and the spacing of steel fasteners was analyzed. The results show that the numerical model can reliably reflect the bonding properties of HB-FRP reinforced interface, and HB-FRP reinforcement can effectively inhibit the development of debonding. The bond-slip relationship at the steel fastener is characterized by the typical trilinear shape of elastic rise, softening decrease, residual platform. The bond stress is finally stabilized rather than reduced to zero. Concrete failure surface at the steel fastener is "wedge-shaped" where the debonding thickness is greater than that of ordinary FRP bonding. Tensile strength increases after FRP thickness exceeds 5 layers. Tensile strength will not continuously increase as the spacing between steel fasteners decreases. When the spacing between steel fasteners is 250mm, the reinforcement efficiency of HB-FRP reinforcement mode can be fully utilized, which is 4.2 times that of ordinary FRP.