A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
METHOD FOR INVESTIGATING AND REINFORCING EXISTING PILE
To provide a method for investigating and reinforcing an existing pile that can investigate and repair the condition of existing pile from the ground around a structure.SOLUTION: By controlling the rotation and non-rotation of a drilling rod 9 while applying vibration to the drilling rod 9 or striking a tip bit 11 of the drilling rod 9, a curved first hole 13 is drilled from the ground around a structure 3 toward the vicinity of a lower end of an existing pile 5. Next, investigating means 19 is installed using the hole 13 to inspect the state of the existing pile 5. If the investigation shows that the existing pile 5 has a damaged part, the drilling rod 9 is once pulled back to change the drilling direction, and guided to the vicinity of the damaged part to drill a second hole 13a. Thereafter, jet tools 23 are inserted into the hole 13a, and a ground improvement body 31 is formed so as to cover at least the damaged part.SELECTED DRAWING: Figure 4
【課題】構造物の周囲の地上から既存杭の状態を調査して補修することができる既存杭の調査および補強方法を提供すること。【解決手段】削孔ロッド９に振動を、ないしは削孔ロッド９の先端ビット１１に打撃を加えつつ、削孔ロッド９の回転と非回転を制御することにより、構造物３の周囲の地上から既存杭５の下端部付近に向けて曲線状の第１の孔１３を削孔する。次に、孔１３を用いて調査手段１９を設置して、既存杭５の状態を調査する。そして、調査において既存杭５に損傷箇所が存在することが判明した場合には、削孔ロッド９を一旦引き戻して削孔方向を変更し、損傷箇所の近傍に誘導して第２の孔１３ａを削孔する。その後、孔１３ａにジェットツールス２３を挿入し、少なくとも損傷箇所を覆うように地盤改良体３１を形成する。【選択図】図４
METHOD FOR INVESTIGATING AND REINFORCING EXISTING PILE
To provide a method for investigating and reinforcing an existing pile that can investigate and repair the condition of existing pile from the ground around a structure.SOLUTION: By controlling the rotation and non-rotation of a drilling rod 9 while applying vibration to the drilling rod 9 or striking a tip bit 11 of the drilling rod 9, a curved first hole 13 is drilled from the ground around a structure 3 toward the vicinity of a lower end of an existing pile 5. Next, investigating means 19 is installed using the hole 13 to inspect the state of the existing pile 5. If the investigation shows that the existing pile 5 has a damaged part, the drilling rod 9 is once pulled back to change the drilling direction, and guided to the vicinity of the damaged part to drill a second hole 13a. Thereafter, jet tools 23 are inserted into the hole 13a, and a ground improvement body 31 is formed so as to cover at least the damaged part.SELECTED DRAWING: Figure 4
【課題】構造物の周囲の地上から既存杭の状態を調査して補修することができる既存杭の調査および補強方法を提供すること。【解決手段】削孔ロッド９に振動を、ないしは削孔ロッド９の先端ビット１１に打撃を加えつつ、削孔ロッド９の回転と非回転を制御することにより、構造物３の周囲の地上から既存杭５の下端部付近に向けて曲線状の第１の孔１３を削孔する。次に、孔１３を用いて調査手段１９を設置して、既存杭５の状態を調査する。そして、調査において既存杭５に損傷箇所が存在することが判明した場合には、削孔ロッド９を一旦引き戻して削孔方向を変更し、損傷箇所の近傍に誘導して第２の孔１３ａを削孔する。その後、孔１３ａにジェットツールス２３を挿入し、少なくとも損傷箇所を覆うように地盤改良体３１を形成する。【選択図】図４
METHOD FOR INVESTIGATING AND REINFORCING EXISTING PILE
既存杭の調査および補強方法
NAKAMURA YOSHIHIRO (author) / TAKANO SUGURU (author) / SAITO SHIGERU (author) / KUMEGAWA MASANORI (author) / NORO YOSHITAKA (author)
2020-01-16
Patent
Electronic Resource
Japanese
IPC:
E02D
FOUNDATIONS
,
Gründungen
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