Rreseach On Mechanical Properties Of FRP Tube Reinforced Concrete Members Under Eccentric Loads

Due to its performance of high strength,light quality,corrosionresistance, fiber reinforcedpolyme is got the more and more favour by contemporary scholars of civil engineering. FRPpipe was used to restrain reinforced concrete, which besides can provide the correspondingmechanical properties, also can be used as a permanent template and protect the inside of thematerial.In this paper, FRP tube reinforced concrete members under eccentric loads weresimulated in the finite element software,and the simulated results were analyzed, the workdone are including mainly:1.The related research status on FRP confined concrete columns at home and abroad wassimply summmaried.2.Components were designed, and the nonlinear problemes of finite element wereanalysed.3.Simulate unit and constitutive relation of FRP pipe,concrete,and steel bar werediscussed and chosen.4.The model of FRP tube reinforced concrete members under eccentric loads isestablished, then the correctness of the model was verified.5.The parameters of the model was changed, FRP tube reinforced concrete membersunder eccentric loads were simulated, the the simulated results were analyzed.In this paper,contentsimulated and analyzed is including①Keep the parameters on ratio of longitudinal reinforcement,length to diameter ratio,concrete strength immobile, initial eccentricity changed was analyzed.the ultimate bearingcapacity, the relevant deflection and bending moment of FRP tube reinforced concretemembers were obtained, then corresponding graphs were drew and damaged characteristicswas described.②Keep the parameters on ratio of longitudinal reinforcement, length to diameter ratio,initial eccentricity immobile, concrete strength changed was analyzed.the ultimate bearingcapacity, the relevant deflection and bending moment of FRP tube reinforced concretemembers were obtained, then corresponding graphs were drew and damaged characteristicswas described.③Keep the parameters on concrete strength, length to diameter ratio, initial eccentricityimmobile, ratio of longitudinal reinforcement changed was analyzed.the ultimate bearingcapacity, the relevant deflection and bending moment of FRP tube reinforced concretemembers were obtained,then corresponding graphs were drew and damaged characteristicswas described.④Keep the parameters on concrete strength,ratio of longitudinal reinforcement, initialeccentricity immobile, length to diameter ratio changed was analyzed.the ultimate bearing capacity,the relevant deflection and bending moment of FRP tube reinforced concretemembers were obtained,then corresponding graphs were drew and damaged characteristicswas described.⑤According to the results of finite element analysis,analys initial eccentricity, theconcrete strength, ratio of longitudinal reinforcement and length to diameter ratio to impact onthe ultimate bearing capacity of FRP pipe reinforced concrete components under eccentricloads and the relevant deflection.