The Finite Element Analysis Of Torsional Beam Strengthened With CFRP Strips

Carbon Fiber Reinforced Polymer(CFRP),CFRP embedded reinforcement technology has high strength,easy to operate,resistance the corrosion,fatigues resisting advantages that compared with traditional reinforcement methods.CFRP embedded strengthening technology has rapidly developing in the field of bending and shearing,but in the torsion is still at the initial stage.There is no finite-element model and basis for distinguish damage,so should study it deeper.(1)Firstly,established torsion of reinforced concrete using finite element software ABAQUS model for finite element analysis.Use the finite element analysis result compared with the experimental data,the results show that finite-element results in good agreement with the experimental.It proves that finite element has higher reasonableness and accuracy and effectiveness.Obtain the judgment of torsion failure of reinforced concrete beam.Carried out complete process analysis of FRP embedded in torsion of reinforced concrete beams.(2)In order to ensure the ductility require of CFRP embedded reinforcement torsion component,and make the stirrups and longitudinal of components to yield strength after reinforcement and components failure has the threat,so presented CFRP strip reinforcement angle's range of CFRP embedded reinforcement torsion component,to avoid brittle failure.(3)Study failure method of CFRP embedded reinforcement torsion component.Determine the impact factors of torsional ultimate bearing capacity.Establishment the relationship between CFRP embedded reinforcement torsion component ultimate bearing capacity,deformation and the reinforcement method of CFRP strips.(4)Get limit torque and effective stress of different embed method,embed location and reinforcement by 1 comparison beam compared with 11 reinforcement beam.Bring up the effective stress and limit torque calculation formula of reinforced torsional beam.