Research On Hysteretic Behavior Of Oblique Stiffening Corrugated Steel Plate Shear Wall

Corrugated steel plate shear wall as a new type of lateral resistance system,has better performance than flat steel plate shear wall in terms of energy consumption and carrying capacity.However,in the later stage of loading,large out-of-plane deformation of corrugated steel plate shear wall causes serious structural problems in terms of bearing capacity and stiffness degradation.Therefore,the oblique stiffening corrugated steel plate shear wall is proposed on previous studies in this article.the oblique stiffening ribs are used to limit the out-of-plane deformation of the corrugated steel plate,thereby improving the overall mechanical properties of the structure.The main research results of the article are as follows:(1)By using the finite element software ABAQUS 6.14.4,a shell element model was established and analyzed to verify the existing corrugated steel plate shear wall experiments.The research shows that the finite element simulation results are close to the experimental results,so the reliability of the finite element software modeling method is explained.(2)By comparing the oblique stiffening corrugated steel plate shear wall with the non-stiffened corrugated steel plate shear wall,it is found that the existence of the diagonal stiffening ribs has a very limited effect on the deformation of the corrugated steel plate out of plane.The equivalent viscous damping coefficient of the oblique stiffening corrugated steel plate shear wall is about 1% to 4% greater than that of the non-stiffened corrugated steel plate shear wall,and the initial stiffness is about 10% greater.The stiffened corrugated steel plate shear wall has more excellent energy consumption capacity and higher bearing capacity.This shows that the diagonal stiffener can delay the degradation of the strength and stiffness of the structure.(3)Through the analysis of variable parameters of the axial compression ratio,material strength,steel plate thickness,wave height,wavelength,stiffener width,and placement direction of corrugated steel plate with diagonal stiffened corrugated steel plate shear wall,hysteresis performance,skeleton curve,Comparing various mechanical indexes such as hysteretic performance,skeleton curve,yield load and displacement,peak load and displacement,strength and stiffness degradation trends under different parameters,It is obtained that the axial compression ratio is 0.1 to 0.4;the thickness of the steel plate is 4.5mm to 7.5mm;the wave height is 135 mm to 165mm;the wavelength is 120 mm to 210 mm,and obtain reasonable values to provide recommendations for engineering construction.