Abstract：In order to study the bond-slip relationship of sprayed FRP-concrete interface, double-lap shear tests and numerical simulations were performed on five specimens. The interfacial failure modes, interface shear bearing capacity, load-slip curve, bond-slip relationship and other mechanical properties were analyzed, and the influencing factors such as fiber volume fraction and sprayed FRP thickness were studied. Finally, on the basis of experiments and numerical simulations, a bond-slip constitutive model for sprayed FRP-concrete interface was established, and calculation results of the model were compared with the experimental results. The results show that both the fiber volume fraction and the sprayed FRP thickness have a great influence on the interfacial bonding mechanical properties; the finite element model constructed in this paper can accurately simulate the bonding mechanical properties of the sprayed FRP-concrete interface; The proposed exponential theoretical calculation model has high accuracy and a certain safety margin, and can be used in practical engineering to analyze the bonding FRP-concrete interface mechanical properties. The results of the dissertation can provide a theoretical basis for the application and promotion of sprayed FRP reinforcement technology.
杨 曌 李佳佳 刘 勇. 喷射FRP-混凝土界面的黏结滑移模型研究[J]. 土木工程学报, 2018, 51(S1): 98-103.
Yang Zhao Li Jiajia Liu Yong. Study on bond-slip model of sprayed frp-concrete interface. 土木工程学报, 2018, 51(S1): 98-103.
