Research On The Seismic Behabiour Of Special Shaped Columns Frame-Composite Shear Wall With Double Steel Plate

The special shaped columns frame-H shaped steel beam system can’t be widely used in the high-rise building becase of the capacity of resisting the lateral deformation.The special shaped columns frame-composite shear wall with double steel plate is an attempt to combine the special shaped columns frame system and the composite shear wall with double steel plate,improving the seismic performance of the special shaped columns frame-H shaped steel beam system.Now,there is little research on this kind structure.The main researches of this passage are as follow:Introducing the present situation of special-shaped column composed of concrete-filled square steel tubes,the steel shear wall,the composite shear wall with steel plate,providing the relevant theoretical basis for the research.Comparing the the composite shear wall with double steel plate,its superiority was proved.To study the influence of the marginal members on the special shaped columns frame-composite shear wall,three 1:2 specimens are designed and they were tested under low cyclic loading.Thereafter to evaluate the seismic performance,analysing the bearing capacity,ductility coefficient,the hysteresis curves,skeleton curves,the failure mechanisms,strength and stiffness degradation,lateral deformation,the key part strain.The numerical simulation on the structure was conducted with the nonlinear finite element software ABAQUS.The stress and strain state and the failure mode of the shear wall are obtained and the result were compared with the test data.After verifing the finite element model,analysing the infulence of different comparisons,including shear span ratio,the thickness of steel plate,and the marginal member type on the skeleton curves.Baded on the cross-section plasticity theory,proposing the calculation formula of the bearing capacity of the special shaped columns frame-composite shear wall with double steel plate and proposing the recommendations on the seismic design of the structure.