AN EMPIRICAL STUDY ON SHEAR STRENGTH OF STEEL ENCASED REINFORCED CONCRETE MEMBERS CONCERNING BOND STRESS BETWEEN STEEL AND CONCRETE

Abstract

This paper deals with shear strength concerning bond stress between steel and concrete in SRC members. A theoretical shear strength is led based on the upper bound theorem in plastic analysis, and assuming idealized deformation and failure surface in members. The proposed formula indicates that the shear strength depends on an axial load level, and its adequacy is confirmed empirically. Bond characteristic between steel plate and concrete is also investigated empirically, varying lateral confinement stress of the concrete. Finally the condition that such a brittle failure can be avoided is reconsidered using the knowledge obtained in the above experiments.