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Title |
Shear Deterioration of Reinforced Concrete Beams Failing in Shear after Flexural Yielding
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Keywords |
reinforced concrete beam 전단성능저하; 연성; 축방향 변형률; 트러스모델; 철근콘크리트 보; shear deterioration; ductility; axial strain; truss model |
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Abstract |
The potential shear strength of reinforced concrete beams decreases after flexural yielding due to the decrease of the effective compressive strength of concrete in plastic hinge zone. A truss model considering shear deterioration in the plastic hinge zone was proposed in order to evaluate the ductile capacity of reinforced concrete beams failing in shear after flexural yielding This model can determine the potential shear strength of the beam by using a truss model. The potential shear strength gradually decreases as the increase of the axial strain of member. When the calculated potential shear strength decreases up to the flexural yielding strength, the corresponding rotation angle is defined as the ductile capacity of the beam. The predicted ductile capacity of reinforced concrete beams is shown to be in a good agreement with experimental results.
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