Finite Element Analysis Of Multi-cavity Steel-encased Concrete Composite Shear Wall

In recent years,with the increasing of high-rise and super high-rise buildings,in order to meet the structural requirements of mechanical properties such as bearing capacity and ductility,the thickness of the bottom shear wall wall is increased significantly,which results in the increase of the structure weight and the earthquake damage.In order to reduce the thickness of the wall,and to reduce the damage,the structural form of the shear wall is the key point to meet the mechanical properties of the shear wall.The proposed concrete composite shear wall of steel plate can solve this problem effectively,this kind of shear wall can make full use of the advantages of the two materials,while satisfying the mechanical properties of the shear wall,it can reduce the wall thickness significantly,thus improving the seismic performance of the shear wall,so as to reduce the earthquake damage.In order to further study the factors that affect the mechanical properties of steel plate shear wall,based on the experiment,this paper uses the method of combining finite element simulation and theoretical analysis to determine the established model has reliable constitutive relation,then carries on the parametric analysis,the concrete contents are as follows:The finite element model which is consistent with the test specimen is established,the finite element model is tested in large quantities,the influence of the parameters of the finite element software on the mechanical properties of the shear wall model is investigated,and the constitutive relation of the model can be determined by comparing the experimental and simulated skeleton curves.The correct contact relationship between parts and the real boundary conditions corresponding to the test,thus verifying the reliability and validity of the model and providing a reliable theoretical basis for the subsequent parametric analysis.Based on the correct and effective model,a large number of parametric analysis of steel plate shear Wall Model members is made,the parameters are set including wall thickness,steel ratio,axial compression ratio,shear span ratio,bolt length,material strength and so on,by changing the parameters of the model to simulate the finite element,then the hysteretic curve,skeleton curve,Ductility coefficient diagram and other graphs,combined with data graph analysis to explore the effect of each parameter on the mechanical properties of steel plate shear wall.This paper sums up the formula of shear strength of steel plate shear wall,which is given by other scholars and domestic and foreign standards.In this paper,the proposed calculation formula of shear strength of steel plate shear wall is given,and the calculation result of the proposed formula is verified by test simulation data,which provides a reliable theoretical reference and basis for further study of steel plate shear wall.