Steel - Concrete Composite With The Beams And Concrete Shear Wall Node Seismic Performance Test Study

In recent years, the steel-concrete hybrid structure is extensively applied to the high rised buildings in our country. But, the research works mostly concentrate on these aspects such as the control of the comparatively displacement of structure floors under the earthquake action and the damage shape of structure when it suffer the rare earthquake etc,the research on the weakness point(such as the conjunction node of steel-concrete composite coupling beam and reinforced concrete wall) of this structure system is not comprehensive.On the basis of the former researches and taking into account the practice of our country, this paper take the low period repeat loading experiment for two full scale the strongle node of steel-concrete composite coupling beam and reinforced concrete shear wall in the plane, researching their failure patterns and seismic behavior under the low period repeat loading action,the main content concentrate on the following aspects:1) Based on the summary research results in the past, applying theory such as mechanics, RC structure non-linear and so on to preliminarily theoretically analyzes steel-concrete composite coupling beam joint, and propose the joint experimental plan, and carries on two full scale steel-concrete composite coupling beam and concrete shear wall strongly joint test in the plan under the low period repeat loading action.2) According to the experimental phenomenon and the theoretical analysis, researching two joint's failure pattern,hysteretic curve,charge of rigidity,durability,energy dissipation capacity,the strain of the key position and the moment transferring mechanism.3) The axial load ratio (n) are discussed, which influenced the earthquake resistance perfoumance of this new type of steel-concrete composite joints. Axial compression ratio was little effected on the ductility and energy dissipation capacity of strong nodes component.4) Base on the test results, preliminarily analyzes shear deformation of joint and energy dissipation capacity, hysteresis curve of connection region was plotted.5 ) In order to carry on the earthquake resistance analysis, it needs to be modeling the hysteresis curve which obtain from the laboratory data, enables it more ideally to respond the component the displacement-load relations under the earthquake load action, and considers the strength and the stiffness degenerated rule, according to the tentative data and the regression analysis, proposes the joint skeleton curve model and the resiliency model.