CALCULATION METHOD OF THE DESIGN SHEAR CAPACITY FOR REINFORCED CONCRETE BEAMS ENSURED CONTINUITY TO SHEAR-SPAN TO EFFECTIVE DEPTH RATIO

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  • せん断スパン比に対する連続性を考慮したRC棒部材の設計せん断耐力算定法

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 The safety of reinforced concrete (RC) structures for shear force is verified by confirming that shear force does not reach the design shear capacities (Vyd, Vdd). Based on experimental results, Vyd and Vdd have been obtained which are expressed as a function of shear-span to effective depth ratio (a/d). Therefore, significant difference between Vyd and Vdd at a/d =2.0 occurs in the case of RC beam having larger shear reinforcement ratio. One of the reasons is that the contribution of stirrups on the shear capacity of RC beams has not been clarified. Based on 611 experimental results, this research has investigated the contribution of stirrups and loading plates on the shear capacity of rectangular cross-sectioned RC beams. Finally, calculation method of the design shear capacity for RC beams ensured continuity to a/d was proposed.

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