カットオフ筋を有するRC梁部材の付着割裂性状に及ぼす横補強筋の影響 [in Japanese] EFFECT OF TRANSVERSE REINFORCEMENT ON BOND SPLITTING BEHAVIORS OF RC BEAMS WITH SECOND LAYER-CUTOFF BARS [in Japanese]
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Experiments were conducted on ten reinforced concrete beams arranging second layer-cutoff bars to study the influence of the bond reinforcement upon bond splitting strength or anchorage behaviors. The longitudinal bars of beams were reinforced by transverse bars having different configurations (separated and closed types) and strengths (<i>σ<sub>y</sub></i>=295 and 1275 N/mm<sup>2</sup>). The bond strength of the second layer bars reinforced by separated type bars was almost equal to that reinforced by closed type bars. High strength bond reinforcement increased in bond strength by 30 %. Test results also showed that the bond strength of the second layer-cutoff bars were considerably higher than calculated value according to design guidelines of AIJ. A new reduction coefficient for the second layer-cutoff bars was proposed to reasonably estimate the bond strength for anchorage failure.
- Journal of Structural and Construction Engineering (Transactions of AIJ)
Journal of Structural and Construction Engineering (Transactions of AIJ) 80(714), 1297-1306, 2015
Architectural Institute of Japan