| Title |
Optimum Reinforcing Range of the Vertically-Anchored Intermediate Reinforcement to Spread the Beam Plastic Hinging Zone of the High-Strength R/C Beam- |
| Abstract |
The purpose of this study is to investigate the optimum reinforcing range of the vertically-anchored intermediate reinforcement to spread the beam plastic hinging zone of the high-strength (fc=700kg/cm2) R/C beam-column joints. The newly proposed intermediate reinforcements which are vertically anchored by interlinking each intermediate rebars are tested for the ductile behavior of R/C beam-column joints. Main variable is the reinforcing range(0.5d, 1.0d, 1.5d; d is the effective depth of beam) of the intermediate reinforcements. From the test results, the beam plastic hinging zone can be moved and expanded in case of being reinforced by the vertically-anchored intermediate rebar about 1.0d. And energy dissipation capacity of the specimen, IV-1.0D10 which is reinforced by vertically anchored intermediate rebars about 1.0d is 1.6 times as high as the specimen CM-STAN which is designed by ACI318-89. On the other hand, the specimen IV-0.5D10 which is reinforced by vertically anchored intermediate rebars about 0.5d shows the diagonal tension failure at the center of the moved plastic hinging zone. |