CAST-IN-PLACE STEEL PIPE CONCRETE PILE AND STEEL PIPE THEREOF

PROBLEM TO BE SOLVED: To provide a cast-in-place steel pipe concrete pile and a steel pipe thereof, capable of integrating the steel pipe and concrete, and capable of also setting a dimension of a spacer properly in response to an excavation hole diameter, while making a reinforced cage passable in the steel pipe.SOLUTION: In a cast-in-place steel pipe concrete pile composed of a steel pipe 1 installed in an excavation hole upper part, a reinforced cage having a plurality of spacers on the outer periphery and built up in an excavation hole via the inside of the steel pipe 1 and concrete placed in the excavation hole, a plurality of restricting members 2 for restricting axial directional dislocation between the steel pipe and hardened concrete are provided at an interval in the circumferential direction on the inner periphery of the steel pipe 1, and when building up the reinforced cage, the spacers are made passable between the restricting members 2 and 2, and a reinforcement member is provided on the outer periphery of the steel pipe at least just above the restricting members in the axial direction of the steel pipe.SELECTED DRAWING: Figure 1 【課題】鋼管とコンクリートとの一体化を図ることができ、しかも鉄筋籠が鋼管内を通過可能としつつ、スペーサの寸法を掘削孔径に応じた適正なものとすることができる、場所打ち鋼管コンクリート杭及びその鋼管を提供すること。【解決手段】掘削孔上部に設置される鋼管１と、外周に複数のスペーサを有し、鋼管１内を通して掘削孔に建て込まれる鉄筋籠と、掘削孔に打設されるコンクリートとからなる場所打ち鋼管コンクリート杭であって、鋼管１の内周に該鋼管と硬化コンクリートとの間の軸方向ずれを拘束するための複数の拘束部材２を周方向に間隔を置いて設け、鉄筋籠の建て込み時にスペーサが拘束部材２，２間を通過可能とし、鋼管の軸線方向にて拘束部材の少なくとも直上であって鋼管の外周に補強部材を設けた。【選択図】図１