| With the promulgation of relevant national polic ies and people's increasing demand for environmental protection,vigorous expansion of fabricated steel structure building has become the mainstream trend of today's construction industry.As a kind of assembled steel structure,the steel-concrete composite shear wall is favored by the owners because of its good bearing capacity,seismic performance,high rate of house acquisition,effective avoidance of protrusion of indoor column angle and convenient construction.In recent years,many enterprises and colleges have made innovations and Research on the steel-concrete composite shear wall in varying degrees.On the basis of previous studies,I mainly studied the following contents:(1)Summarize the advantages and disadvantages of reinforced concrete shear w all and steel-clad composite shear wall with different existing systems,and use TRIZ theory innovation method to design a new type of steel-clad concrete composite shear wall structure system.A new type of steel-concrete composite shear wall-BHI steel-concrete composite shear wall is proposed,and the new system is evaluated comprehensively by TRIZ theory.(2)The finite element analysis software ABAQUS is used to carry out the numerical simulation analysis of axially compressed members.The bearing capacity and failure modes of BHI steel-ladle concrete composite shear wall members under axial compression are studied.On this basis,parametric analysis is carried out to analyze the effects of steel strength,concrete strength,steel plate thickness,H-section web spacing,H-section web opening ratio and other parameters on the axial compression performance.The data are fitted by the numerical analysis software of MATLAB,and the formula for calculating the bearing capacity of BHI ladle concrete composite shear wall under axial compression is obtained.The results of the formula and the finite element analysis are verified.(3)The bending behavior of BHI steel-ladle concrete composite shear wall is studied.The numerical analysis of the new type of component is carried out by finite element software,and the mechanism of the structural member's bending failure is studied.The influence of material strength and section steel content of composite shear wall on the flexural and compressive bearing capacity of this kind of structural member is studied.Based on the assumption of flat section,the formula for calculating the flexural and compressive bearing capacity of BHI steel-ladle concrete composite shear wall is deduced,and the reliability of the formula is verified by comparing with the results of finite element method. |
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