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A platform for research: civil engineering, architecture and urbanism
METHOD FOR REMOVING SLIME IN CAST-IN-PLACE CONCRETE PILE
PROBLEM TO BE SOLVED: To enhance removal efficiency of slime that tends to sink to the hole bottom of a drilled hole in a construction method for a cast-in-place concrete pile.SOLUTION: A tremie pipe 4 is disposed on the inner peripheral side of a steel bar basket 3, and a convection pipe 5 is disposed near a hole wall 2a on the outer peripheral side of the steel bar basket 3. Each of the tip ends is inserted up to a depth in which they reach or approach a hole bottom 2b. Prior to installation of concrete 9 via the tremie pipe 4, stable solution 1 inside or outside a drilled hole 2 is suctioned so that it is discharged from an axis-directional tip of either the convection pipe 5 or the tremie pipe 4, while the stable solution 1 is suctioned from the other one of the axis-directional tips so that it is returned into the drilled hole 2, and slime in the stable solution 1 is removed while the stable solution 1, which is present around the hole bottom 2b of the hole wall 2, is forced to circulate.SELECTED DRAWING: Figure 1
【課題】場所打ちコンクリート杭の構築方法において削孔の孔底に沈殿しようとするスライムの除去効率を高める。【解決手段】鉄筋籠３の内周側にトレミー管４を、鉄筋籠３の外周側の孔壁２ａ寄りに対流管５をそれぞれ配置し、それぞれの先端部が孔底２ｂに到達、もしくは接近する深さまで挿入し、トレミー管４を通じたコンクリート９の打設に先立ち、削孔２内の、もしくは削孔２外の安定液１を吸引して対流管５とトレミー管４のいずれか一方の軸方向先端部から吐出させる一方、いずれか他方の軸方向先端部から安定液１を吸引して削孔２内へ復帰させ、削孔２の孔底２ｂ付近に存在する安定液１を強制的に循環させながら、安定液１中のスライムを除去する。【選択図】図１
METHOD FOR REMOVING SLIME IN CAST-IN-PLACE CONCRETE PILE
PROBLEM TO BE SOLVED: To enhance removal efficiency of slime that tends to sink to the hole bottom of a drilled hole in a construction method for a cast-in-place concrete pile.SOLUTION: A tremie pipe 4 is disposed on the inner peripheral side of a steel bar basket 3, and a convection pipe 5 is disposed near a hole wall 2a on the outer peripheral side of the steel bar basket 3. Each of the tip ends is inserted up to a depth in which they reach or approach a hole bottom 2b. Prior to installation of concrete 9 via the tremie pipe 4, stable solution 1 inside or outside a drilled hole 2 is suctioned so that it is discharged from an axis-directional tip of either the convection pipe 5 or the tremie pipe 4, while the stable solution 1 is suctioned from the other one of the axis-directional tips so that it is returned into the drilled hole 2, and slime in the stable solution 1 is removed while the stable solution 1, which is present around the hole bottom 2b of the hole wall 2, is forced to circulate.SELECTED DRAWING: Figure 1
【課題】場所打ちコンクリート杭の構築方法において削孔の孔底に沈殿しようとするスライムの除去効率を高める。【解決手段】鉄筋籠３の内周側にトレミー管４を、鉄筋籠３の外周側の孔壁２ａ寄りに対流管５をそれぞれ配置し、それぞれの先端部が孔底２ｂに到達、もしくは接近する深さまで挿入し、トレミー管４を通じたコンクリート９の打設に先立ち、削孔２内の、もしくは削孔２外の安定液１を吸引して対流管５とトレミー管４のいずれか一方の軸方向先端部から吐出させる一方、いずれか他方の軸方向先端部から安定液１を吸引して削孔２内へ復帰させ、削孔２の孔底２ｂ付近に存在する安定液１を強制的に循環させながら、安定液１中のスライムを除去する。【選択図】図１
METHOD FOR REMOVING SLIME IN CAST-IN-PLACE CONCRETE PILE
場所打ちコンクリート杭におけるスライムの除去方法
UEDA AKIRO (author) / NISHIO AKIRA (author) / HAYAKAWA HIROHISA (author) / TAJIMA SHINICHI (author)
2018-06-21
Patent
Electronic Resource
Japanese
IPC:
E02D
FOUNDATIONS
,
Gründungen
SLIME TREATMENT METHOD IN CAST-IN-PLACE PILE CONSTRUCTION METHOD
| European Patent Office | 2019
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