Research On Behavior Of Cross Stiffening Corrugated Steel Plate Shear Wall

As a lateral system,corrugated steel plate shear wall has better lateral stiffness,bearing capacity and energy dissipation capacity than flat steel plate shear wall.However,in the later stage of loading,the out-of-plane deformation of corrugated steel plate is too large and the stress distribution of corrugated steel plate is not uniform,which leads to serious degradation of structural bearing capacity and stiffness.In this paper,the cross stiffened corrugated steel plate shear wall is proposed based on the constraint of out-of-plane deformation of embedded corrugated steel plate.By covering the cross stiffeners on both sides of the embedded corrugated steel plate,the out-of-plane deformation of the corrugated steel plate can be restrained,so as to alleviate the serious degradation of the bearing capacity and stiffness of the structure in the later period.In this paper,the whole shell element model is established by finite element software ABAQUS,and the existing corrugated steel plate shear wall test is verified.The results show that the finite element calculation results are in good agreement with the test results,which proves the validity of the modeling method.The comparison and expansion parameters of cross stiffened corrugated steel plate shear wall are analyzed.The parameters include the layout direction of corrugated steel plate,the thickness of corrugated steel plate,the corrugated height of corrugated steel plate,the wavelength of corrugated steel plate and the width of stiffening rib.The main research results are as follows.:(1)By comparing and analyzing the shear and hysteretic properties of corrugated steel plate shear wall and cross stiffened corrugated steel plate shear wall,it is found that cross stiffened corrugated steel plate shear wall is superior to corrugated steel plate shear wall in energy dissipation capacity,bearing capacity and stiffness degradation,out-of-plane deformation and so on.It is proved that cross stiffened ribs can effectively alleviate the serious degradation of bearing capacity and stiffness of shear wall.(2)By analyzing the hysteretic curve,equivalent viscous damping coefficient,skeleton curve,strength and stiffness degradation of cross stiffened corrugated steel plate shear walls with different parameters under reciprocating loads,the hysteretic behavior of cross stiffened corrugated steel plate shear walls is studied,and through comparative analysis,suggestions onthe values of each parameter are put forward.(3)In order to uniformly measure the influence of different size parameters on the mechanical properties of cross stiffened corrugated steel plate shear wall,the stiffness ratio of column wall is defined in this paper,and some suggestions on the stiffness ratio of structure column wall are put forward.