BEHAVIOR OF SUPPORT ZONE OF CANTILEVER BEAM EMBEDED WITH FRP TENDONS

The properties of a cantilever beam embedded FRP tendons at the curved surface and lateral surface was carried out near the support. Impacts of a FRP bar type, the side slotting and embedded sticky mode of the test beams and initial loading on the cantilever beam were discussed. The characteristic loading of the test beams, the deflection of the cantilever end and the strain of steel/FRP tendons were analyzed. The experimental results show that the crack load, yield load and ultimate load of the cantilever beam can be enhanced by embeded FRP tendons. The ultimate load of the test beams increases by 48.9% ~ 64.2%. Deflection of the cantilever end and deformation of the cantilever beam can be effectively controlled by embeded FRP tendons. The characteristic loads of the strengthened beam under sustained loading are lower than that of the beams without initial loading, and the deformation is larger. Thus, it is an effective reinforced method by embeded FRP tendons in the cantilever beam near the support.