Shear stiffness and large deformation behavior 1 1 2 3 4 Yoshimichi KAWAI, Shigeaki TOHNAI, Hiroshi TANAKA, Atsushi SATO and Tetsuro ONO Shear walls in which sheets with burring-holes aligned along the vertical direction are fastened to frame members, are applied to multi-story buildings. The walls that receive in-plane shear force allow shear stress to concentrate in intervals between the holes. Shear stiffness of the wall was gradually decreasing according to the deformation increasing. All

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... tervals were simultaneously deformed and the deformation areas were limited in the intervals by ring-shaped-burring-ribs. Shear walls behavior at large deformation depended on the tension field on the intervals. The effect of the thickness of sheets is evaluated and estimating methods for the design values are developed.