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CONSTRUCTION METHOD OF COFFERDAM CUM STEEL PIPE SHEET PILE FOUNDATION
PROBLEM TO BE SOLVED: To provide a construction method of a cofferdam cum steel pipe sheet pile foundation which can reduce a cutting removal cost and material cost of a steel pipe sheet pile constituting a partition wall when the partition wall is provided in a sunk well constituted of the steel pipe sheet.SOLUTION: A construction method of a cofferdam cum steel pipe sheet pile foundation comprises: a steel pipe sheet pile placement step of placing steel pipe sheet piles 10 (10a, 10b) and forming a sunk well; a peripheral wall forming step of forming a peripheral wall S for constituting the sunk well by placing two or more peripheral wall components constituted by connecting the steel pipe sheet piles 10 (10a, 10b) in the ground; and a partition wall forming step of forming a partition wall W defining the inside of the peripheral wall S by placing two or more partition wall components constituted by connecting the steel pipe sheet piles 10 and a plier pile 20 in the ground before or after the peripheral wall forming step or concurrently. The construction method also includes a plier pile removal step of removing the plier pile 20 for constituting the partition wall components before or after an excavation step in the sunk well for excavating the inside of the sunk well or concurrently.
【課題】鋼管矢板で構成される井筒内に隔壁部を有する場合に、隔壁部を構成する鋼管矢板の切断撤去費及び材料費の低減が可能な仮締切兼用鋼管矢板基礎の施工方法を提供する。【解決手段】仮締切兼用鋼管矢板基礎の施工方法は、鋼管矢板１０（１０ａ，１０ｂ）を打設して井筒を形成する鋼管矢板打設工工程に、鋼管矢板１０（１０ａ，１０ｂ）を連結して構成された複数の周壁部構成部材を地中に打設して井筒を構成する周壁部Ｓを形成する周壁部形成工程と、周壁部形成工程に前後して、または並行して、鋼管矢板１０及びヤットコ杭２０を連結して構成された複数の隔壁部構成部材を地中に打設して、周壁部Ｓ内を区画する隔壁部Ｗを形成する隔壁部形成工程とを含み、井筒内を掘削する井筒内掘削工程に前後して、または並行して、隔壁部構成部材を構成するヤットコ杭２０を撤去するヤットコ杭撤去工程を備えている。【選択図】図３
CONSTRUCTION METHOD OF COFFERDAM CUM STEEL PIPE SHEET PILE FOUNDATION
PROBLEM TO BE SOLVED: To provide a construction method of a cofferdam cum steel pipe sheet pile foundation which can reduce a cutting removal cost and material cost of a steel pipe sheet pile constituting a partition wall when the partition wall is provided in a sunk well constituted of the steel pipe sheet.SOLUTION: A construction method of a cofferdam cum steel pipe sheet pile foundation comprises: a steel pipe sheet pile placement step of placing steel pipe sheet piles 10 (10a, 10b) and forming a sunk well; a peripheral wall forming step of forming a peripheral wall S for constituting the sunk well by placing two or more peripheral wall components constituted by connecting the steel pipe sheet piles 10 (10a, 10b) in the ground; and a partition wall forming step of forming a partition wall W defining the inside of the peripheral wall S by placing two or more partition wall components constituted by connecting the steel pipe sheet piles 10 and a plier pile 20 in the ground before or after the peripheral wall forming step or concurrently. The construction method also includes a plier pile removal step of removing the plier pile 20 for constituting the partition wall components before or after an excavation step in the sunk well for excavating the inside of the sunk well or concurrently.
【課題】鋼管矢板で構成される井筒内に隔壁部を有する場合に、隔壁部を構成する鋼管矢板の切断撤去費及び材料費の低減が可能な仮締切兼用鋼管矢板基礎の施工方法を提供する。【解決手段】仮締切兼用鋼管矢板基礎の施工方法は、鋼管矢板１０（１０ａ，１０ｂ）を打設して井筒を形成する鋼管矢板打設工工程に、鋼管矢板１０（１０ａ，１０ｂ）を連結して構成された複数の周壁部構成部材を地中に打設して井筒を構成する周壁部Ｓを形成する周壁部形成工程と、周壁部形成工程に前後して、または並行して、鋼管矢板１０及びヤットコ杭２０を連結して構成された複数の隔壁部構成部材を地中に打設して、周壁部Ｓ内を区画する隔壁部Ｗを形成する隔壁部形成工程とを含み、井筒内を掘削する井筒内掘削工程に前後して、または並行して、隔壁部構成部材を構成するヤットコ杭２０を撤去するヤットコ杭撤去工程を備えている。【選択図】図３
CONSTRUCTION METHOD OF COFFERDAM CUM STEEL PIPE SHEET PILE FOUNDATION
仮締切兼用鋼管矢板基礎の施工方法
KIKUCHI SHUNSUKE (author) / USUI TAKAMITSU (author)
2015-10-29
Patent
Electronic Resource
Japanese
IPC:
E02D
FOUNDATIONS
,
Gründungen
Construction method of underwater pile foundation steel sheet pile cofferdam
| European Patent Office | 2023