高強度PC杭とパイルキャップとの接合に関する研究 : 高強度PC杭の耐力及び変形性能向上に関する研究(3)

概要

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With the aim of providing a ductility to a PHC pile-to-pile cap connection, a new connecting method has been developed by the authors. With this method, the pile, together with its axial reinforcement, is cut off. The cut-off pile is then embedded into the pile cap 10 to 20 cm, and then axial reinforcement (6-D 22 bars) and spiral hoop (4 mm φ-@ 50 mm) are arranged in the hollow section of the pile and subsequently the concrete is placed into both the hollow section and the pile cap simultaneously. This new method offers greater work efficiency, and also ductility in the PHC pile-to-pile cap connection without the failure of the axial reinforcement of the pile. This paper reports the experiments and analyses of the shear transfer mechanism in a PHC pile-to-pile cap connection. These investigations have revealed that the PHC pile-to-pile cap connection constructed under the proposed method has great ductility. The effects of embedded length on the maximum sher strebgth and ductility of a pile been clarified as well.
1989-04-30