抄録
A modified "truss-analogy" is presented for the analysis on the shear failure of reinforced concrete beams subjected to considtrated loads. In addition to the well-known facters such as concrete strength, web reinforcement and shear span ratio, the bond characteristics between longitudinal reinforcement and concrete are taken into considteration for the analysis of mechanism of shear failure. The results of analysis show that the ultimate strength and failing modes of reinforced concrete members should be remarkably affected by the bond characteristics. The fundamental equations on the ultimate shear strength of beams and columns derived from the above-mentioned analysis are very similar to the widely-accepted empirical formula which was proposed by K. Ohno and T. Arakawa in 1960. This fact should suggest that both the new equations and Ohno-Arakawa's equation are valid in general. The test results of simple beams and continuous beams presented by many researchers were analysed by the proposed method the predicted values of shear strength and the failing modes show good correspondence to the test data.
