Carry capacity analysis of RC beams strengthened with prestressed FRP plates

Based on the continuous damage theory,considering the shear effect,the high-order shearing flexural and in-plane deformation coupling model is built.The disadvantage of the FRP reinforced method is the destroy of concrete and delamination of epoxy resign,the role of FRP plate is not performed totally.Pre-stress the PRP plate bonding to the beam may improve the reinforced effect;tensioned with different length of FRP plates and analyzed with nonlinear FEM method,the reinforced effects are revealed.