Seismic Behavior Analysis Of Steel Reinforced Concrete Shear Wall

With the acceleration of urbanization in China,steel-concrete shear wall composite structure has been applied in practical projects,but the research on seismic performance is still relatively lagging behind.Therefore,this paper mainly studies and analyses the construction method and seismic performance of steel reinforced concrete shear wall.In view of the existing problems in the research of seismic performance of steel reinforced concrete shear wall,this paper analyses the basic working mechanism of steel reinforced concrete shear wall,then establishes the finite element calculation model according to the characteristics of steel reinforced concrete shear wall,and verifies the reliability of its finite element analysis;finally,through the establishment of steel reinforced concrete shear wall and ordinary concrete shear wall.The finite element model is used to simulate the horizontal repeated loading.The superiority of the seismic performance of steel reinforced concrete shear wall is compared and analyzed from the aspects of bearing capacity,stiffness,ductility and hysteretic energy dissipation.The parametric analysis of the steel reinforced concrete shear wall is carried out to study the effects of the thickness,aspect ratio,steel reinforced strength,concrete strength and axial compression ratio on the mechanical properties of the steel reinforced concrete shear wall.The following conclusions are drawn:(1)According to the characteristics of steel reinforced concrete shear wall,the type of element,material constitutive relation and contact relation of element can simulate the mechanical performance of steel reinforced concrete shear wall better;(2)The hysteretic curve of steel reinforced concrete shear wall shows good stability,and its stiffness degradation is relatively gentle in the later stage of loading;Compared with ordinary concrete shear wall,steel reinforced concrete shear wall can simulate the mechanical performance of steel reinforced concrete shear wall better.The peak displacement,ultimate displacement and ductility of shear wall are increased by 51.8%,56.6% and 53.4% respectively,and the energy dissipation capacity is also improved.(3)The parametric analysis of steel reinforced concrete shear wallshows that the effect of increasing the thickness of steel reinforced concrete wall on its load-bearing capacity is not good;with the increase of aspect ratio,its load-bearing capacity decreases significantly and ductility is poor;with the increase of steel-reinforced strength,concrete strength and axial compression ratio,its load-bearing capacity can be improved,and the deformation capacity will increase with the increase of steel-reinforced strength,but with the increase of mixing.With the increase of the strength and the ratio of axial compression,the deformation capacity of the concrete decreases.The above research results can provide reference for seismic design of steel reinforced concrete shear wall.