Abstract
Abstract: To overcome the problem of debonding, a new hybrid‐bonded fiber‐reinforced polymers (HB‐FRP) strengthening system has recently been developed. This HB‐FRP technique can increase the interfacial bond strength several folds. In this work, a finite element (FE) model for HB‐FRP strengthened beams is developed to simulate the responses of the new structural system. The interfacial behaviors between the FRP and the concrete are simulated with a shear friction model. Comparisons between the predictions from this model and the test results demonstrate the accuracy of the FE model. The mechanism of the HB‐FRP system and failure modes are then studied using the proposed model.
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