Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
EARTHEN WALL DROPPING METHOD
PROBLEM TO BE SOLVED: To provide an earthen wall dropping method capable of easily dropping an earthen wall by uniformly cutting the edge of the whole surface of a sheet pile, without using a large-scale jig.SOLUTION: A steel pipe sheet pile 8 is driven in the underwater ground 1, and water on an excavation side 41 of the steel pipe sheet pile 8 is discharged to an external part. A plurality of water jet nozzles 13 are arranged along a surface on the excavation side 41 of the steel pipe sheet pile 8, and while injecting a jet 17a downward in the vertical direction from a nozzle 15b and a jet 17a in the horizontal direction from a nozzle 15a, a water jet nozzle 13 is penetrated downward in the vertical direction up to the depth in the vicinity of the excavation expected depth from a surface of the ground 1. At the same time, an edge-cutting part 9 is formed between the steel pipe sheet pile 8 and the ground 1 on the excavation side 41 by the jet 17a in the horizontal direction. Next, after excavating the ground 1 on the excavation side 41 up to the excavation expected depth by using a glove bucker and the like, an earthen wall 1a fallen on the excavation side 41 is removed in response to excavation of the ground 1.SELECTED DRAWING: Figure 2
【課題】大がかりな治具を用いることなく、矢板の表面全体をむらなく縁切りして土べらを容易に落とすことができる土べら落とし方法を提供すること。【解決手段】鋼管矢板８を水中の地盤１に打設し、鋼管矢板８の掘削側４１の水を外部に排出する。そして、複数の水ジェットノズル１３を鋼管矢板８の掘削側４１の表面に沿って配置し、ノズル１５ｂから鉛直方向下方にジェット１７ｂを、ノズル１５ａから水平方向にジェット１７ａを噴射しつつ、水ジェットノズル１３を地盤１の表面から掘削予定深さ付近の深度まで鉛直方向下方に貫入する。同時に、水平方向のジェット１７ａにより、鋼管矢板８と掘削側４１の地盤１との間に縁切り部９を形成する。次に、グラブバケット等を用いて掘削側４１の地盤１を掘削予定深さまで掘削した後、地盤１の掘削に伴って掘削側４１に倒れた土べら１ａを撤去する。【選択図】図２
EARTHEN WALL DROPPING METHOD
PROBLEM TO BE SOLVED: To provide an earthen wall dropping method capable of easily dropping an earthen wall by uniformly cutting the edge of the whole surface of a sheet pile, without using a large-scale jig.SOLUTION: A steel pipe sheet pile 8 is driven in the underwater ground 1, and water on an excavation side 41 of the steel pipe sheet pile 8 is discharged to an external part. A plurality of water jet nozzles 13 are arranged along a surface on the excavation side 41 of the steel pipe sheet pile 8, and while injecting a jet 17a downward in the vertical direction from a nozzle 15b and a jet 17a in the horizontal direction from a nozzle 15a, a water jet nozzle 13 is penetrated downward in the vertical direction up to the depth in the vicinity of the excavation expected depth from a surface of the ground 1. At the same time, an edge-cutting part 9 is formed between the steel pipe sheet pile 8 and the ground 1 on the excavation side 41 by the jet 17a in the horizontal direction. Next, after excavating the ground 1 on the excavation side 41 up to the excavation expected depth by using a glove bucker and the like, an earthen wall 1a fallen on the excavation side 41 is removed in response to excavation of the ground 1.SELECTED DRAWING: Figure 2
【課題】大がかりな治具を用いることなく、矢板の表面全体をむらなく縁切りして土べらを容易に落とすことができる土べら落とし方法を提供すること。【解決手段】鋼管矢板８を水中の地盤１に打設し、鋼管矢板８の掘削側４１の水を外部に排出する。そして、複数の水ジェットノズル１３を鋼管矢板８の掘削側４１の表面に沿って配置し、ノズル１５ｂから鉛直方向下方にジェット１７ｂを、ノズル１５ａから水平方向にジェット１７ａを噴射しつつ、水ジェットノズル１３を地盤１の表面から掘削予定深さ付近の深度まで鉛直方向下方に貫入する。同時に、水平方向のジェット１７ａにより、鋼管矢板８と掘削側４１の地盤１との間に縁切り部９を形成する。次に、グラブバケット等を用いて掘削側４１の地盤１を掘削予定深さまで掘削した後、地盤１の掘削に伴って掘削側４１に倒れた土べら１ａを撤去する。【選択図】図２
EARTHEN WALL DROPPING METHOD
土べら落とし方法
UEDA AKIRO (Autor:in) / YOSHIMURA SHINICHI (Autor:in) / TAKEUCHI AKIHIRO (Autor:in) / NEMOTO YOSHIAKI (Autor:in)
22.02.2018
Patent
Elektronische Ressource
Japanisch
IPC:
E02D
FOUNDATIONS
,
Gründungen
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