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A platform for research: civil engineering, architecture and urbanism
CONSTRUCTION METHOD OF CAST-IN-CONCRETE PILE AND CAST-IN-CONCRETE PILE
To provide a construction method allowing a concrete pile with less tilting to be constructed.SOLUTION: A construction method includes: first step s3 of constructing a first pile shaft part pile hole 71; a second step of performing both of middle section diameter enlargement part construction step s6 of constructing a middle section diameter enlargement part pile hole 73 by excavating the ground as rotating a diameter enlargement blade for a middle section diameter enlargement part excavation bucket and pile shaft part small diameter pile hole construction step s4 of constructing a pile shaft part small diameter pile hole 72 in a place equal to or deeper than a tip position of the first pile shaft part pile hole 71; third step s7 of constructing a second pile shaft part pile hole 74 in a place equal to or deeper than the middle section diameter enlargement part pile hole through the pile shaft part small diameter pile hole as a guide hole by excavating the ground around the pile shaft part small diameter pile hole as rotating a larger diameter excavation bucket; fourth step s9 of constructing an enlarged bottom pile hole 75; and fifth step s12 of casting concrete in the first shaft part pile hole 71, the middle section enlargement pile hole 73, the second pile shaft pile hole 74, and the enlarged bottom pile hole 75.SELECTED DRAWING: Figure 9
【課題】傾斜の少ないコンクリート杭を構築する。【解決手段】第１杭軸部用杭孔７１を造成する第一工程ｓ３と、中間拡径部用掘削バケットの拡径翼を回転させながら地盤を掘削し、中間拡径部用杭孔７３を造成する中間拡径部造成工程ｓ６と、第１杭軸部用杭孔７１の先端位置より以深に杭軸部用小口径杭孔７２を造成する杭軸部用小口径杭孔造成工程ｓ４との双方を実行する第二工程と、大口径用掘削バケットを回転させながら杭軸部用小口径杭孔の周りの地盤を掘削し、当該杭軸部用小口径杭孔を誘導孔として中間拡径部用杭孔より以深に第２杭軸部用杭孔７４を造成する第三工程ｓ７と、拡底部用杭孔７５を造成する第四工程ｓ９と、第１杭軸部用杭孔７１、中間拡径部用杭孔７３、第２杭軸部用杭孔７４および拡底部用杭孔７５にコンクリートを打設する第五工程ｓ１２とを含む。【選択図】図９
CONSTRUCTION METHOD OF CAST-IN-CONCRETE PILE AND CAST-IN-CONCRETE PILE
To provide a construction method allowing a concrete pile with less tilting to be constructed.SOLUTION: A construction method includes: first step s3 of constructing a first pile shaft part pile hole 71; a second step of performing both of middle section diameter enlargement part construction step s6 of constructing a middle section diameter enlargement part pile hole 73 by excavating the ground as rotating a diameter enlargement blade for a middle section diameter enlargement part excavation bucket and pile shaft part small diameter pile hole construction step s4 of constructing a pile shaft part small diameter pile hole 72 in a place equal to or deeper than a tip position of the first pile shaft part pile hole 71; third step s7 of constructing a second pile shaft part pile hole 74 in a place equal to or deeper than the middle section diameter enlargement part pile hole through the pile shaft part small diameter pile hole as a guide hole by excavating the ground around the pile shaft part small diameter pile hole as rotating a larger diameter excavation bucket; fourth step s9 of constructing an enlarged bottom pile hole 75; and fifth step s12 of casting concrete in the first shaft part pile hole 71, the middle section enlargement pile hole 73, the second pile shaft pile hole 74, and the enlarged bottom pile hole 75.SELECTED DRAWING: Figure 9
【課題】傾斜の少ないコンクリート杭を構築する。【解決手段】第１杭軸部用杭孔７１を造成する第一工程ｓ３と、中間拡径部用掘削バケットの拡径翼を回転させながら地盤を掘削し、中間拡径部用杭孔７３を造成する中間拡径部造成工程ｓ６と、第１杭軸部用杭孔７１の先端位置より以深に杭軸部用小口径杭孔７２を造成する杭軸部用小口径杭孔造成工程ｓ４との双方を実行する第二工程と、大口径用掘削バケットを回転させながら杭軸部用小口径杭孔の周りの地盤を掘削し、当該杭軸部用小口径杭孔を誘導孔として中間拡径部用杭孔より以深に第２杭軸部用杭孔７４を造成する第三工程ｓ７と、拡底部用杭孔７５を造成する第四工程ｓ９と、第１杭軸部用杭孔７１、中間拡径部用杭孔７３、第２杭軸部用杭孔７４および拡底部用杭孔７５にコンクリートを打設する第五工程ｓ１２とを含む。【選択図】図９
CONSTRUCTION METHOD OF CAST-IN-CONCRETE PILE AND CAST-IN-CONCRETE PILE
場所打ちコンクリート杭の構築方法および場所打ちコンクリート杭
HAMA KENTARO (author) / WATANABE TORU (author) / HORII YOSHIHIRO (author) / AKIZUKI MICHITAKA (author) / SOMEYA REI (author) / KUBO YUTAKA (author) / NAKANISHI YOSHITAKA (author) / OSHIMA TAKASHI (author)
2023-07-20
Patent
Electronic Resource
Japanese
IPC:
E02D
FOUNDATIONS
,
Gründungen
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