A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
PROBLEM TO BE SOLVED: To provide a method of pulling out an existing pile efficiently using water pressure.SOLUTION: A method of pulling out an existing pile is for pulling out an existing pile 1 driven in a ground, and includes: a block slab installation step in which a blocking slab 2 is inserted into a hollow part of the existing pile 1 from a head part and made to land on a ground of the hollow part located in the hollow part of the existing pile 1, the blocking slab having a shape that fits in a hollow cross-section of the existing pile 1; a head part sealing step in which the head part of the existing pile 1 is sealed; and a water injection step in which water is injected into the hollow part of the existing pile 1 to cause water pressure to be exerted on the blocking slab 2, thus generating pull-out force that pushes up the existing pile 1.SELECTED DRAWING: Figure 1
【課題】本発明は、水圧によって既設杭を効率良く引き抜くことができる既設杭の引抜き工法を提供する。【解決手段】地盤に打ち込まれた既設杭１を引き抜く既設杭の引抜き工法であって、既設杭１の内空断面に収まる形状を有する閉塞版２を、頭部から既設杭１の中空部に挿入させ、既設杭１の中空部に位置する中空部地盤に着地させる閉塞版設置工程と、既設杭１の頭部を密閉する頭部密閉工程と、既設杭１の中空部に注水することで、閉塞版２に水圧を作用させ、既設杭１を押し上げる引抜力を発生させる注水工程とを有する。【選択図】図１
PROBLEM TO BE SOLVED: To provide a method of pulling out an existing pile efficiently using water pressure.SOLUTION: A method of pulling out an existing pile is for pulling out an existing pile 1 driven in a ground, and includes: a block slab installation step in which a blocking slab 2 is inserted into a hollow part of the existing pile 1 from a head part and made to land on a ground of the hollow part located in the hollow part of the existing pile 1, the blocking slab having a shape that fits in a hollow cross-section of the existing pile 1; a head part sealing step in which the head part of the existing pile 1 is sealed; and a water injection step in which water is injected into the hollow part of the existing pile 1 to cause water pressure to be exerted on the blocking slab 2, thus generating pull-out force that pushes up the existing pile 1.SELECTED DRAWING: Figure 1
【課題】本発明は、水圧によって既設杭を効率良く引き抜くことができる既設杭の引抜き工法を提供する。【解決手段】地盤に打ち込まれた既設杭１を引き抜く既設杭の引抜き工法であって、既設杭１の内空断面に収まる形状を有する閉塞版２を、頭部から既設杭１の中空部に挿入させ、既設杭１の中空部に位置する中空部地盤に着地させる閉塞版設置工程と、既設杭１の頭部を密閉する頭部密閉工程と、既設杭１の中空部に注水することで、閉塞版２に水圧を作用させ、既設杭１を押し上げる引抜力を発生させる注水工程とを有する。【選択図】図１
METHOD OF PULLING OUT EXISTING PILE
既設杭の引抜き工法
MASUI NAOKI (author)
2016-04-11
Patent
Electronic Resource
Japanese
IPC:
E02D
FOUNDATIONS
,
Gründungen