When the buckling occurs in the infill plate of steel plate shear wall (W), a diagonal tension field is formed through the plate. This paper investigates the influence of torsional and out-ofplane flexural rigidities of boundary members on the buckling coefficient as well as on the distribution and orientation patterns of principal stresses associated with the 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. Keywords steel shear wall; shear buckling; anchoring; tension field; thin plate; Ritz method. Introduction The steel plate shear wall is a lateral load resisting system consisting of an infill
