Quasi-static Test And Seismic Behavior Research On New Type Shear Wall To Steel Beam Connections In Hybrid Structure

Nowadays, steel-concrete hybrid structure are more and more widely applied in high-rise and super high-rise building structures. The load-bearing performances of beam-column connection and shear wall-beam connection are concerned. The shear wall and steel beam is connected by prefabricated components. In this paper, the main research works which based on new semi-rigid composite connection and new shear wall hybrid connection are carried out as follows:Firstly, six specimens of new semi-rigid composite connection and new shear wall hybrid connection are designed and quasi-static tested. Test show that in this types of connections, the new shear wall-beam cover-plate and dog-bone hybrid connection which performed best with stronger bearing capacity and seismic behavior. The result of test is compared with result of FEM, which verifies the accuracy of the modeling and reliability of FEM.Secondly, the moment and rotation curves and hysteretic behavior of new composite connection with considering effect of slab are parametric analyzed and compared with steel connection. Analytical results verify that the load-bearing performances are greater influenced by the effect of slab, the thickness of slab and the reinforcement ratio of slab. These factors are concerned in engineering and design.Thirdly, the moment versus rotation curves and hysteretic behavior of the new shear wall hybrid connection with considering effect of slab are parametric analyzed.Analytical results verify that the moment and rotation curves the hysteretic behavior of the new shear wall hybrid connection are greatest influenced by the strength of steel and greater influenced by the thickness of slab, the reinforcement ratio of slab,the height of beam section and the thickness of end-plate.Finally, The moment versus rotation intelligent model of new shear wall to beam composite connection is established by BP neutral network intelligent method. The rM ?? curves can be simulated and predicted by the new neutral network intelligent model of new semi-rigid connection. It can provide a reference for theory research and real engineering application and design.