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

콘크리트 구조물의 전단 안정성 평가를 위한 전단전달 실험 및 해석

  • Kim, Kwang-Soo (Hwamyung Grand Bridge Construction Project, Hyundai Engineering & Construction Co., LTD)
  • 김광수 (현대건설 화명대교 건설현장)
  • Published : 2008.06.30

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.

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