Numerical Analysis Of The Performance Of Steel Plate Shear Wall

Steel plate shear walls is to improve the seismic performance of structure stiffness and fill steel plate in the part of bean-column structure,can be placed at the bottom of the watch as a thin vertical anchorage of cantilever beam,web frame column is equal to the plate beam wing,beam fairly and transverse stiffener,fills in the steel plate is equivalent to plate girder web.Steel plate shear wall,although in many engineering applications,but its overall structure seismic performance system research is needed.Such as:in order to give full play to the steel plate of loopback full performance,pure shear yield stress can occur when the destruction,usually in setting of enough lateral steel plate shear wall on both sides of the stiffener,to ensure that the steel plate in front of the yield as much as possible without overall buckling and local buckling,which greatly increased the steel plate shear wall construction,the complexity of the design and manufacture.This paper,by using experimental and finite element analysis,the research of steel plate shear wall shear static performance,the stress mechanism and failure mode.Through the study,the change of the thickness ratio has great effect on bearing capacity of steel plate,steel plate stiffness will have significant change.Thin steel plate has good ductility,thick steel plate instead.With the increase of shear wall thickness,the yield and the proportion of the buckling load is also reduced.When high thickness ratio of 200 or less,steel plate shear wall tension cannot give full play to take effect.Analysis shows that when the high thickness ratio is less than 250,steel plate shear wall can not realize the function of the first seismic line.When high thickness ratio is more than 250,high carrying capacity of the steel plate shear wall thickness ratio is less than 250,its growth is slow,features of ductile fracture.Generous than fills in steel plate for different deformation framework requirements vary,such as generous degree ratio 0.5,frame column bearing part of the power.When generous than about two,give priority to with the beam stress.Bilateral lateral force resistant structure for the frame shear structure,its play a role of seismic fortification,if you want to achieve the best effect,make the filling plate energy dissipation effect,column also needs to achieve the best seismic performance.Through research and analysis,initial stiffness of steel plate shear wall is approximately 75%can achieve the best results(aspect ratio is 250,generous than 1).