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The Effect of Out-of-Plane Flexural Stiffness of Boundary Frame on Buckling Stress Patterns of Steel Plate Shear Wall P. MEMARZADEH*, M. AZHARI†, M.M. SAADATPOUR† *Department of Civil Engineering, Islamic Azad University, Najafabad Branch, Najafabad †Department of Civil Engineering, Isfahan University of Technology, Isfahan IRAN mojtaba@cc.iut.ac.ir Abstract: - When buckling occurs in the infill plate of Steel Plate Shear Wall (SPSW), a diagonal tension field is formed through the plate. It seems that the lateral displacements of plate due to buckling may have a role in formation of the tension field. Meanwhile revealing this role, this paper investigates the influence of out-of-plane flexural stiffness of boundary members (i.e. beams and columns) on the buckling coefficients and the tension field behaviour of SPSW associated with the symmetric and anti-symmetric buckling modes. The linear buckling equations in the sense of von- Karman have been solved in conjunction with various boundary conditions, by using the Ritz method. Key-Words: - Steel shear wall, Thin plate, Shear buckling, Symmetric, Anti-symmetric, Ritz method, Principal stresses [Hidden Content] 54cba9df0cf24601c0886fc9.pdf