Abstract
In the CFRP repair of steel bridges in service condition, not only steel members, but also the CFRP strips and epoxy resin adhesives in situ are subjected to cyclic stress and vibration generated due to traffic load. The aim of this study is to investigate for the effects of the fatigue crack repair using CFRP strips and epoxy resin adhesives under dynamic load during curing. First, experiments have been carried out using coupon specimens of steel plates with through center crack. Second, FEM analysis hase been carried out to predicate the fatigue crack propagation, and compared it with the experiment results. As a result, it can be considered that bonding repair in service conditions will not affect to the fatigue life, and it was confirmed feasible for practical use.
