The Study Of The NSM FRP Bars Strengthening Of The RC Beams

Today’s reinforcement field,in virtue of the advantages of FRP, light-w eight, high-strength, non-corrosive and fatigue resistibility It has been widel y used.In the past two decads, a new technology of strengthening structur es with near-surface mounted FRP has been proposed by foreign researcher s. The beams are strengthened through inserting FRP bars or strips into gr ooves first cut at the tension surface. It’s a promising technology for incre asing flexural and shear capacity of a deficient reinforced concrete (RC) m ember effectively. The reinforcement method has a good development prosp ect, but still need to expand the relevant areas of research, such as anchor ing construction measures.Based on testing of the four beams, we investigated the ultimate loadi ng capacity and deflections of the flexural strengthened RC beams with N SM FRP bars, analyzes different kinds of bars, steel pressure FRP anchora ge and secondary stress flexural performance of the influence of the speci men.In addition, this paper introduces the theory of the finite element analyzes model which is concluded by finite element method. And the paper compare test results and finite element result to verify the correctness of the model. providing analysis tools for further research.