| 要旨 |
The shear strength of reinforced concrete beams with a small amount of web reinforcement, which are 0.035%, 0.05%,0.065% and 0.08%, was tested. Estimated shear strength calculated by summing up the shear strength of concrete beams without web reinforcement (Vc) and web reinforcement (Vs) was compared to the tested shear strength (Vu). To explain the applicable of superposition method, clarify aggregate interlocking from the shear crack sliding and opening was necessary. As a result, the aggregate interlocking force is 80% of the shear crack load (Vcr). In conclusion, the superposition method (Vc+Vs) is applicable for estimating the shear strength of beams with a small amount of web reinforcement. |