Abstract
In conjunction with structural design of cast-in-situ diaphragm R/C walls constructed in the underground along the periphery of the basements, biaxial bending-shear tests of R/C wall specimen were performed. The previous paper (Part 1) of this transactions No.285 describes the abstract of experiments and its results. This subsequent paper (Part 2) proposes a method of calculating the biaxial shear strength by taking into account only the neutral axis position to be obtained by the biaxial bending analysis, and examines its validity by comparing the shear strength and failure mode obtained by this method with the results of the tests of previous paper. The following facts can be said from the this study. (1) Shear strength of R/C wall under biaxial bending-shear may be estimated by the equation (2) at the neutral axis position at the yield point of the main reinforcement of the corner which sustains compression for the flexure perpendicular to the plane and tension for the flexure parallel to the plane. (2) Interaction curve for R/C wall under biaxial bending-shear may be appoximately obtained by combining the interaction curve for the biaxial shear based on the preceding point (1) and that for the biaxial flexure.
