Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
METHOD AND ROD FOR PILE HOLE EXCAVATION
PROBLEM TO BE SOLVED: To excavate a pile hole with a pile head part efficiently without replacing an excavation head and with about the same amount of discharged soil, the pile hole being excavated to have a diameter Dnear a ground surface greater than a shaft part diameter D.SOLUTION: An excavation rod 30 includes a first mixing drum 20A, a second mixing drum 20B, and a third mixing drum 30C respectively at H, H, and Habove an excavation head 5 (c). A pile hole 42 having a diameter Dis excavated from a ground surface 41 using the excavation head 5, and the pile hole 42 is widened using the first mixing drum 20A to a pile hole 42A with a diameter widened to D(a). Furthermore, the pile hole 42A is widened using the second mixing drum 20B to a pile hole 42B having a diameter D(b), and the pile hole 42B is widened using the third mixing drum 20C to a pile hole 42C having a diameter widened to D(c). The pile hole 42C having the diameter Dnecessary for securing horizontal support force may be formed near the ground surface 41, with the pile hole 42 having the diameter Dat a shaft part necessary for tip supporting force (d).SELECTED DRAWING: Figure 3
【課題】地上付近を軸部径Ｄ０より大径の径Ｄ３に形成する杭穴を掘削する際に、掘削ヘッドの組み替えをすることなく、同程度の排土量として、効率的に拡頭部を有する杭穴を掘削できる。【解決手段】掘削ロッド３０は、掘削ヘッド５の上方Ｈ１、Ｈ２、Ｈ３にそれぞれ、第１練り付けドラム２０Ａ、第２練り付けドラム２０Ｂ、第３練り付けドラム３０Ｃを有する（ｃ）。地上４１から掘削ヘッド５で径Ｄ０の杭穴４２を掘削し、第１練り付けドラム２０Ａで杭穴４２を径Ｄ１に拡大した杭穴４２Ａとする（ａ）。さらに、第２練り付けドラム２０Ｂで杭穴４２Ａを径Ｄ２の杭穴４２Ｂに拡大し（ｂ）、杭穴４２Ｂを第３練り付けドラム２０Ｃで径Ｄ３に拡大した杭穴４２Ｃ形成する（ｃ）。先端支持力に必要な軸部が径Ｄ０の杭穴４２で、地上４１付近を水平支持力確保に必要な径Ｄ３の杭穴４２ｃを形成できる（ｄ）。【選択図】図３
METHOD AND ROD FOR PILE HOLE EXCAVATION
PROBLEM TO BE SOLVED: To excavate a pile hole with a pile head part efficiently without replacing an excavation head and with about the same amount of discharged soil, the pile hole being excavated to have a diameter Dnear a ground surface greater than a shaft part diameter D.SOLUTION: An excavation rod 30 includes a first mixing drum 20A, a second mixing drum 20B, and a third mixing drum 30C respectively at H, H, and Habove an excavation head 5 (c). A pile hole 42 having a diameter Dis excavated from a ground surface 41 using the excavation head 5, and the pile hole 42 is widened using the first mixing drum 20A to a pile hole 42A with a diameter widened to D(a). Furthermore, the pile hole 42A is widened using the second mixing drum 20B to a pile hole 42B having a diameter D(b), and the pile hole 42B is widened using the third mixing drum 20C to a pile hole 42C having a diameter widened to D(c). The pile hole 42C having the diameter Dnecessary for securing horizontal support force may be formed near the ground surface 41, with the pile hole 42 having the diameter Dat a shaft part necessary for tip supporting force (d).SELECTED DRAWING: Figure 3
【課題】地上付近を軸部径Ｄ０より大径の径Ｄ３に形成する杭穴を掘削する際に、掘削ヘッドの組み替えをすることなく、同程度の排土量として、効率的に拡頭部を有する杭穴を掘削できる。【解決手段】掘削ロッド３０は、掘削ヘッド５の上方Ｈ１、Ｈ２、Ｈ３にそれぞれ、第１練り付けドラム２０Ａ、第２練り付けドラム２０Ｂ、第３練り付けドラム３０Ｃを有する（ｃ）。地上４１から掘削ヘッド５で径Ｄ０の杭穴４２を掘削し、第１練り付けドラム２０Ａで杭穴４２を径Ｄ１に拡大した杭穴４２Ａとする（ａ）。さらに、第２練り付けドラム２０Ｂで杭穴４２Ａを径Ｄ２の杭穴４２Ｂに拡大し（ｂ）、杭穴４２Ｂを第３練り付けドラム２０Ｃで径Ｄ３に拡大した杭穴４２Ｃ形成する（ｃ）。先端支持力に必要な軸部が径Ｄ０の杭穴４２で、地上４１付近を水平支持力確保に必要な径Ｄ３の杭穴４２ｃを形成できる（ｄ）。【選択図】図３
METHOD AND ROD FOR PILE HOLE EXCAVATION
杭穴掘削方法、杭穴掘削ロッド
KITANI YOSHINOBU (Autor:in)
28.12.2016
Patent
Elektronische Ressource
Japanisch
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