Research On Seismic Performance Of Concrete Coupled Shear Wall Based On Abaqus Finite Element Model

In practical engineering,due to the ventilation requirements of buildings,lighting needs and other factors,we have to open holes in the shear wall,so the joint shear wall will be formed,and the reasonable joint shear wall design shows better seismic performance advantages than the overall shear wall,so it is particularly important to study the influencing factors of the seismic performance of the joint shear wall.Therefore,this paper takes the typical joint shear wall as the research object.On the basis of the research of scholars at home and abroad,the opening size,axial compression ratio,distributed reinforcement ratio and reinforcement ratio of the coupling shear wall are quantitatively analyzed.The main work of this paper is as follows:1.This paper introduces the causes of the formation of the coupled shear wall and the present situation of the research on the shear wall at home and abroad,and expounds the harm of earthquake to the building structure,so it is of great theoretical significance and engineering application value for the quantitative study of the influencing factors of the seismic performance of the coupled shear wall.2.Further research on how to optimize the shear wall model was carried out.The finite element simulation of shear wall was established by finite element analysis software Abaqus.In order to make the results more accurate,two aspects of optimization processing were carried out.First,the truncation processing of concrete constitutive data was carried out to make it more in line with the engineering practice.Second,Fortran subprogram was established through the latest hysteretic model of reinforced concrete proposed in[1]in the literature to well solve the slip problem between reinforced concrete.Furthermore,the above method was compared with the actual engineering to verify its effectiveness and greatly improve its accuracy.3.Nine different finite element models of shear wall are established by using the improved research method,and four groups of comparisons are carried out.The effects of various factors on the seismic performance of coupled shear wall are studied by studying stress cloud diagram,hysteretic curve,displacement-load skeleton curve,deformation capacity and so on.