Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
PROBLEM TO BE SOLVED: To provide a columnar ground improvement device capable of injecting cement milk into ground while preventing clogging of an ejection port and backflow of cement milk.SOLUTION: In a columnar ground improvement device 100: an excavation shaft 1 includes a first hollow portion 11; the first hollow portion 11 includes an opening 12; the opening 12 is supplied with cement milk 30a; and an excavation blade 2 includes a second hollow portion connected with the first hollow portion 11 and an ejection port 22 connected with the second hollow portion. A metal plate 24 including a bent portion is fixed to a surface of a substrate 23 of the excavation blade 2; at least the substrate 23 and the metal plate 24 form the second hollow portion; and a peripheral edge of the metal plate is in contact with the surface of the substrate to form the ejection port 22. Under a pressure lower than a predetermined pressure, the peripheral edge is kept in contact with the surface and the ejection port 22 is closed. Under a pressure equal to or higher than the predetermined pressure, the peripheral edge becomes separated from the surface, the ejection port 22 is opened and the cement milk is ejected.SELECTED DRAWING: Figure 1
【課題】噴出口の詰りとセメントミルクの逆流を防ぎながら、地盤中にセメントミルクを注入できる柱状地盤改良装置を提供する。【解決手段】柱状地盤改良装置１００は、掘削軸１は、第１の中空部１１を有し、第１の中空部１１は、開口部１２を有し、開口部１２は、セメントミルク３０ａが供給され、掘削翼２は、第１の中空部１１と繋がる第２の中空部と、第２の中空部と繋がる噴出口２２と、を有し、掘削翼２の基体２３の表面に曲げられた曲げ部を有する金属板２４が固定され、少なくとも基体２３と金属板２４とが第２の中空部を形成し、縁辺が表面に当接して噴出口２２を形成し、所定の圧力未満では縁辺が表面に当接したままで噴出口２２を閉じ、所定の圧力以上では縁辺が表面から離れることで噴出口２２を開いてセメントミルクを噴出させる。【選択図】図１
PROBLEM TO BE SOLVED: To provide a columnar ground improvement device capable of injecting cement milk into ground while preventing clogging of an ejection port and backflow of cement milk.SOLUTION: In a columnar ground improvement device 100: an excavation shaft 1 includes a first hollow portion 11; the first hollow portion 11 includes an opening 12; the opening 12 is supplied with cement milk 30a; and an excavation blade 2 includes a second hollow portion connected with the first hollow portion 11 and an ejection port 22 connected with the second hollow portion. A metal plate 24 including a bent portion is fixed to a surface of a substrate 23 of the excavation blade 2; at least the substrate 23 and the metal plate 24 form the second hollow portion; and a peripheral edge of the metal plate is in contact with the surface of the substrate to form the ejection port 22. Under a pressure lower than a predetermined pressure, the peripheral edge is kept in contact with the surface and the ejection port 22 is closed. Under a pressure equal to or higher than the predetermined pressure, the peripheral edge becomes separated from the surface, the ejection port 22 is opened and the cement milk is ejected.SELECTED DRAWING: Figure 1
【課題】噴出口の詰りとセメントミルクの逆流を防ぎながら、地盤中にセメントミルクを注入できる柱状地盤改良装置を提供する。【解決手段】柱状地盤改良装置１００は、掘削軸１は、第１の中空部１１を有し、第１の中空部１１は、開口部１２を有し、開口部１２は、セメントミルク３０ａが供給され、掘削翼２は、第１の中空部１１と繋がる第２の中空部と、第２の中空部と繋がる噴出口２２と、を有し、掘削翼２の基体２３の表面に曲げられた曲げ部を有する金属板２４が固定され、少なくとも基体２３と金属板２４とが第２の中空部を形成し、縁辺が表面に当接して噴出口２２を形成し、所定の圧力未満では縁辺が表面に当接したままで噴出口２２を閉じ、所定の圧力以上では縁辺が表面から離れることで噴出口２２を開いてセメントミルクを噴出させる。【選択図】図１
COLUMNAR GROUND IMPROVEMENT DEVICE
柱状地盤改良装置
AMAGAI TAKASHI (Autor:in)
29.11.2018
Patent
Elektronische Ressource
Japanisch
IPC:
E02D
FOUNDATIONS
,
Gründungen
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