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An Experimental and Analytical Study on Shear Transfer for Safety Evaluation of Concrete Structure  

Kim, Kwang-Soo (Hwamyung Grand Bridge Construction Project, Hyundai Engineering & Construction Co., LTD)
Publication Information
Journal of the Korean Society of Safety / v.23, no.3, 2008 , pp. 42-50 More about this Journal
Abstract
This study, push-off tests for the initially uncracked specimens were conducted to investigate shear transfer mechanism in reinforce concrete elements. Experimental programs for shear transfer were undertaken to investigate the effect of the concrete compressive strength, the presence of steel stirrups as shear reinforcement and the amount of steel stirrups. As the shear plane is loaded, several cracks form in a direction inclined to the shear plane, creating compression struts in the concrete. For this stage, shear is being transferred through a truss-like action produced by the combination of the compressive force in the concrete struts and the tensile force that the steel reinforcement crossing the shear plane develops. In the normal strength concrete specimens with steel stirrups, ultimate failure occurred when the compression struts crushed in concrete. In the high strength concrete specimens, on the other hand, ultimate failure occurred when the steel stirrups developed their yield strength.
Keywords
high strength concrete; push-off test; shear transfer; truss-like action;
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