Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
CAST-IN-PLACE CONCRETE PILE CONSTRUCTION METHOD AND CAST-IN-PLACE CONCRETE PILE
To improve support strength more efficiently and effectively, and reduce construction costs and time compared to the conventional.SOLUTION: A cast-in-place concrete pile construction method comprises a step of forming a second drill hole 21A of an upper bottom expanded portion 21 and a third drill hole 22A of a vertical expanded bottom portion 22 by disposing a drilling machine 3 for expanding a bottom so that a central axis of the drilling machine is aligned with a tip of a drill hole 10A of a shaft portion 10, and drilling the first drill hole 10A of the shaft portion 10 while expanding an expansion wing 33, a step of forming a plurality of fourth drill holes 23A of a lower bottom expanded portion 23 by, furthermore, disposing the center axis of the drilling machine 3 for expanding a bottom eccentrically by a predetermined amount with respect to the center axis of the shaft portion 10, and drilling a hole wall of the third drill hole 22A of the vertical expanded bottom portion 22 while expanding the expansion wing 33, and a step of placing concrete in each drill hole of the shaft portion 10, the upper bottom expanded portion 21, the vertical bottom expanded portion 22, and the lower bottom expanded portion 23.SELECTED DRAWING: Figure 5
【課題】従来と比較し、より効率的且つ効果的に支持耐力を向上させることができ、施工費と施工時間の低減を図ることを可能とした。【解決手段】拡底用掘削機３を軸部１０の掘削孔１０Ａの先端部に双方の中心軸を一致させて配置し、軸部１０の第１掘削孔１０Ａを拡張翼３３を拡げながら拡張するように掘削して上段拡底部２１の第２掘削孔２１Ａ及び鉛直拡底部２２の第３掘削孔２２Ａを形成する工程と、さらに拡底用掘削機３の中心軸を軸部１０の中心軸に対して所定量偏心させて配置し、鉛直拡底部２２の第３掘削孔２２Ａの孔壁を拡張翼３３を拡げながら拡張するように掘削して複数の下段拡底部２３の第４掘削孔２３Ａを形成する工程と、軸部１０、上段拡底部２１、鉛直拡底部２２、及び下段拡底部２３の各掘削孔にコンクリートを打設する工程と、を有する場所打ちコンクリート杭の構築方法を提供する。【選択図】図５
CAST-IN-PLACE CONCRETE PILE CONSTRUCTION METHOD AND CAST-IN-PLACE CONCRETE PILE
To improve support strength more efficiently and effectively, and reduce construction costs and time compared to the conventional.SOLUTION: A cast-in-place concrete pile construction method comprises a step of forming a second drill hole 21A of an upper bottom expanded portion 21 and a third drill hole 22A of a vertical expanded bottom portion 22 by disposing a drilling machine 3 for expanding a bottom so that a central axis of the drilling machine is aligned with a tip of a drill hole 10A of a shaft portion 10, and drilling the first drill hole 10A of the shaft portion 10 while expanding an expansion wing 33, a step of forming a plurality of fourth drill holes 23A of a lower bottom expanded portion 23 by, furthermore, disposing the center axis of the drilling machine 3 for expanding a bottom eccentrically by a predetermined amount with respect to the center axis of the shaft portion 10, and drilling a hole wall of the third drill hole 22A of the vertical expanded bottom portion 22 while expanding the expansion wing 33, and a step of placing concrete in each drill hole of the shaft portion 10, the upper bottom expanded portion 21, the vertical bottom expanded portion 22, and the lower bottom expanded portion 23.SELECTED DRAWING: Figure 5
【課題】従来と比較し、より効率的且つ効果的に支持耐力を向上させることができ、施工費と施工時間の低減を図ることを可能とした。【解決手段】拡底用掘削機３を軸部１０の掘削孔１０Ａの先端部に双方の中心軸を一致させて配置し、軸部１０の第１掘削孔１０Ａを拡張翼３３を拡げながら拡張するように掘削して上段拡底部２１の第２掘削孔２１Ａ及び鉛直拡底部２２の第３掘削孔２２Ａを形成する工程と、さらに拡底用掘削機３の中心軸を軸部１０の中心軸に対して所定量偏心させて配置し、鉛直拡底部２２の第３掘削孔２２Ａの孔壁を拡張翼３３を拡げながら拡張するように掘削して複数の下段拡底部２３の第４掘削孔２３Ａを形成する工程と、軸部１０、上段拡底部２１、鉛直拡底部２２、及び下段拡底部２３の各掘削孔にコンクリートを打設する工程と、を有する場所打ちコンクリート杭の構築方法を提供する。【選択図】図５
CAST-IN-PLACE CONCRETE PILE CONSTRUCTION METHOD AND CAST-IN-PLACE CONCRETE PILE
場所打ちコンクリート杭の構築方法及び場所打ちコンクリート杭
MANO HIDEYUKI (Autor:in)
31.10.2019
Patent
Elektronische Ressource
Japanisch
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