Investigation on crossing sheeting distance to steel shear wall and its stiffeners under seismic load

Abstract

The extensive studies in the field of steel shear walls indicate the initial stiffness, strength, ductility and high energy absorption of this system under cyclic load. These sorts of features obviously show this system is suitable for resisting to seismic loads. Seismic walls are used to design new structures as well as to improve exist structures. The connections of the beams and the columns in these walls could be simple or moment resisting. The basic idea of a thin steel shear wall is the use of a diagonal tension field that is formed after buckling of a steel plate and these shear wall are used in two types of stiffened and unstiffened. The parameters investigated in this research are consist of the distance of the cross sheet to the shear wall and the number of cross sheet stiffeners to the plate of the shear wall. The model was simulated in ABAQUS finite element software to examine the parametric studies of the frame with steel shear walls and cross sheet. Then, the results of the analysis were compared together. According to some of results, by increasing the number of stiffeners between plates and walls by 1.5 times, the stiffness and strength of the frame is reduced by 71% and 51% respectively. Reduction the number of stiffeners by 50% results in decrease of shear strength by 13%. Moreover, decreasing the stiffeners distance by 50% leads to reduction of shear strength by 59%.

Keywords

• steel shear wall
• lateral load
• cross sheet
• ductility
• nonlinear analysis