A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
PROBLEM TO BE SOLVED: To constitute piles capable of securing high bearing power, by being supported by its support layer, by forming the support layer capable of securing proper bearing power at a proper depth position of the weak ground.SOLUTION: A process of erecting excavation compaction means 3 at a required position of the ground (g), a ground excavation process of excavating up to the design depth by driving the excavation compaction means 3 for excavation while applying an excavation load by rotational driving means, a pull-up process of pulling up while reversely rotating the excavation compaction means 3, a support layer forming process of firming a support layer 4 capable of securing bearing power of design bearing power or more by compacting excavation sediment in an excavation hole 2 up to the design depth by applying a descent load while reversely rotatingly driving the excavation compaction means 3 and a crushed stone pile forming process of repeating a cycle of compacting this crushed stone thereby up to an upper end opening part of the excavation hole 2 while reversely rotating an excavation blade 3b of the excavation compaction means 3 by inputting the crushed stone in the excavation hole 2, are executed in this order.
【課題】軟弱地盤の適切な深さ位置に適切な支持力を確保できる支持層を形成し、その支持層で支持されるようにすることで、高い支持力を確保できる杭類を構成すること。【解決手段】地盤ｇの所要位置に掘削圧密手段３を直立させる工程と、掘削圧密手段３を回転駆動手段で掘削用の荷重をかけながら掘削駆動して設計深度まで掘削する地盤掘削工程と、掘削圧密手段３を逆回転させながら引き上げる引き上げ工程と、掘削圧密手段３を逆回転駆動させながら下降荷重をかけ、掘削孔２中の掘削土砂等を設計深度まで圧密して、設計支持力以上の支持力を確保し得る支持層４を形成する支持層形成工程と、掘削孔２中に砕石を投入してこの砕石を掘削圧密手段３の掘削翼３ｂを逆回転させつつこれで圧密するサイクルを掘削孔２の上端開口部まで繰り返す砕石杭形成工程とをその順序で実行する。【選択図】 図６
PROBLEM TO BE SOLVED: To constitute piles capable of securing high bearing power, by being supported by its support layer, by forming the support layer capable of securing proper bearing power at a proper depth position of the weak ground.SOLUTION: A process of erecting excavation compaction means 3 at a required position of the ground (g), a ground excavation process of excavating up to the design depth by driving the excavation compaction means 3 for excavation while applying an excavation load by rotational driving means, a pull-up process of pulling up while reversely rotating the excavation compaction means 3, a support layer forming process of firming a support layer 4 capable of securing bearing power of design bearing power or more by compacting excavation sediment in an excavation hole 2 up to the design depth by applying a descent load while reversely rotatingly driving the excavation compaction means 3 and a crushed stone pile forming process of repeating a cycle of compacting this crushed stone thereby up to an upper end opening part of the excavation hole 2 while reversely rotating an excavation blade 3b of the excavation compaction means 3 by inputting the crushed stone in the excavation hole 2, are executed in this order.
【課題】軟弱地盤の適切な深さ位置に適切な支持力を確保できる支持層を形成し、その支持層で支持されるようにすることで、高い支持力を確保できる杭類を構成すること。【解決手段】地盤ｇの所要位置に掘削圧密手段３を直立させる工程と、掘削圧密手段３を回転駆動手段で掘削用の荷重をかけながら掘削駆動して設計深度まで掘削する地盤掘削工程と、掘削圧密手段３を逆回転させながら引き上げる引き上げ工程と、掘削圧密手段３を逆回転駆動させながら下降荷重をかけ、掘削孔２中の掘削土砂等を設計深度まで圧密して、設計支持力以上の支持力を確保し得る支持層４を形成する支持層形成工程と、掘削孔２中に砕石を投入してこの砕石を掘削圧密手段３の掘削翼３ｂを逆回転させつつこれで圧密するサイクルを掘削孔２の上端開口部まで繰り返す砕石杭形成工程とをその順序で実行する。【選択図】 図６
CONSTRUCTION METHOD OF PILES
杭類の施工方法
YAEGASHI MASATERU (author)
2015-10-22
Patent
Electronic Resource
Japanese
IPC:
E02D
FOUNDATIONS
,
Gründungen
Construction method for continuous construction of secant piles
| European Patent Office | 2024