FORMULATIONS FOR SHEAR STRENGTH AND SHEAR FORCE-SLIP RELATIONSHIP OF L-SHAPED SHEAR CONNECTOR UNDER SHEAR AND NORMAL FORCES

Abstract

 Shear connectors in steel-concrete composite structures generally subject not only to shear force but also normal force. Two models for representing shear strength of L-shaped steel shear connector under shear and normal forces are proposed. First model is that shear strength comes function of the compressive strut angle but its applicable range is limited. The idea that effect of normal forces is added to shear strength without normal forces is used in the second model. The equation form in this model shows continuity of concrete compressive strut angle. It is confirmed that an exponential equation similar for headed studs can be applied for shear force-slip relationship of shear connectors.