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A platform for research: civil engineering, architecture and urbanism
SPIRAL PILE
To provide a spiral pile which facilitates construction by placement, while maintaining an effect of strongly resisting a pulling force.SOLUTION: A spiral pile is constituted by: a spiral pile body 1 in which flat steel is formed into a spiral shape; and peripheral surface friction reducing members 2, 3 protruding further in the width direction and/or the thickness direction than the spiral pile body 1. The peripheral surface friction reducing member 2 is provided protrusively further at the tip than a tip of the spiral pile body 1. The peripheral surface friction reducing member 2 also includes an inclined part 2a inclined in a ridge-shape manner toward the tip. The peripheral surface friction reducing member 3 is provided at a twist part 1a further at a tip part than an axis direction central part of the spiral pile body 1. The peripheral surface friction reducing member 3 is provided across the whole periphery of the twist part 1a at the tip of the spiral pile body 1.SELECTED DRAWING: Figure 1
【課題】引抜力に対して強く抵抗する効果を維持しつつ、打設による施工を容易ならしめるスパイラル杭を提供する。【解決手段】平鋼をスパイラル状に形成してなるスパイラル杭本体１と、前記スパイラル杭本体１よりも幅方向及び／又は厚み方向に突出する周面摩擦低減部材２、３とで構成されている。前記周面摩擦低減部材２は、スパイラル杭本体１の先端よりも先に突設されている。前記周面摩擦低減部材２は、また、先端に向かって山型に傾斜する傾斜部２ａを備えていることを特徴とする。前記周面摩擦低減部材３は、スパイラル杭本体１の軸方向中央部よりも先方部の捩れ部１ａに設けられている。前記周面摩擦低減部材３は、また、スパイラル杭本体１の先端の捩れ部１ａの全周にわたって設けられている。【選択図】図１
SPIRAL PILE
To provide a spiral pile which facilitates construction by placement, while maintaining an effect of strongly resisting a pulling force.SOLUTION: A spiral pile is constituted by: a spiral pile body 1 in which flat steel is formed into a spiral shape; and peripheral surface friction reducing members 2, 3 protruding further in the width direction and/or the thickness direction than the spiral pile body 1. The peripheral surface friction reducing member 2 is provided protrusively further at the tip than a tip of the spiral pile body 1. The peripheral surface friction reducing member 2 also includes an inclined part 2a inclined in a ridge-shape manner toward the tip. The peripheral surface friction reducing member 3 is provided at a twist part 1a further at a tip part than an axis direction central part of the spiral pile body 1. The peripheral surface friction reducing member 3 is provided across the whole periphery of the twist part 1a at the tip of the spiral pile body 1.SELECTED DRAWING: Figure 1
【課題】引抜力に対して強く抵抗する効果を維持しつつ、打設による施工を容易ならしめるスパイラル杭を提供する。【解決手段】平鋼をスパイラル状に形成してなるスパイラル杭本体１と、前記スパイラル杭本体１よりも幅方向及び／又は厚み方向に突出する周面摩擦低減部材２、３とで構成されている。前記周面摩擦低減部材２は、スパイラル杭本体１の先端よりも先に突設されている。前記周面摩擦低減部材２は、また、先端に向かって山型に傾斜する傾斜部２ａを備えていることを特徴とする。前記周面摩擦低減部材３は、スパイラル杭本体１の軸方向中央部よりも先方部の捩れ部１ａに設けられている。前記周面摩擦低減部材３は、また、スパイラル杭本体１の先端の捩れ部１ａの全周にわたって設けられている。【選択図】図１
SPIRAL PILE
スパイラル杭
YASUTOMI KENICHI (author) / OTAKA NORIHIRO (author) / HORI KENGO (author) / SOEDA NAOKI (author)
2024-06-21
Patent
Electronic Resource
Japanese
IPC:
E02D
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