Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
METHOD FOR CONSTRUCTING PILE
To provide a method for constructing a pile which can rationally construct a pile through a small number of steps while surely stabilizing a porous wall and cutting-off ground water.SOLUTION: A cylindrical ground improvement body 11 is prepared in a contaminated ground 1 so that a lower end 15 reaches a viscous soil layer 5. The ground improvement body 11 is prepared by a high-pressure injection agitation method. An unimproved ground 13 inside of the ground improvement body 11 is drilled to a bottom 17 of the ground improvement body 11, and the bottom 17 of the ground improvement body 11 is filled with a hardly-permeable material 19 that is a material having a coefficient of permeability after solidification of a predetermined value or less. A concrete or steel precast pile 23 is installed into a pile construction scheduled area 25 positioned inside of the cylindrical ground improvement body 11 in plan view. The precast pile 23 penetrates through the hardly-permeable material 19, the viscous soil layer 5 and a sand layer 7, and reaches a supporting layer 9. Then, spacing between the ground improvement body 11 and the existing pile 23 is filled with a cement material 27.SELECTED DRAWING: Figure 1
【課題】確実に孔壁の安定および地下水の止水を図りつつ、少ない工程で合理的に施工できる杭の施工方法を提供すること。【解決手段】まず、汚染地盤１中に、下端部１５が粘性土層５に達するように筒状の地盤改良体１１を造成する。地盤改良体１１は、高圧噴射撹拌工法などによって造成される。そして、地盤改良体１１の内側の未改良地盤１３を地盤改良体１１の底部１７まで掘削し、地盤改良体１１の底部１７に、固化後の透水係数が所定の値以下の材料である難透水性材料１９を充填する。次に、平面視で筒状の地盤改良体１１の内側に位置する杭施工予定領域２５に、コンクリート製または鋼製の既製杭２３を打設する。既製杭２３は、難透水性材料１９、粘性土層５、砂層７を貫通して、支持層９に達する。その後、地盤改良体１１と既製杭２３との間にセメント系材料２７を充填する。【選択図】図１
METHOD FOR CONSTRUCTING PILE
To provide a method for constructing a pile which can rationally construct a pile through a small number of steps while surely stabilizing a porous wall and cutting-off ground water.SOLUTION: A cylindrical ground improvement body 11 is prepared in a contaminated ground 1 so that a lower end 15 reaches a viscous soil layer 5. The ground improvement body 11 is prepared by a high-pressure injection agitation method. An unimproved ground 13 inside of the ground improvement body 11 is drilled to a bottom 17 of the ground improvement body 11, and the bottom 17 of the ground improvement body 11 is filled with a hardly-permeable material 19 that is a material having a coefficient of permeability after solidification of a predetermined value or less. A concrete or steel precast pile 23 is installed into a pile construction scheduled area 25 positioned inside of the cylindrical ground improvement body 11 in plan view. The precast pile 23 penetrates through the hardly-permeable material 19, the viscous soil layer 5 and a sand layer 7, and reaches a supporting layer 9. Then, spacing between the ground improvement body 11 and the existing pile 23 is filled with a cement material 27.SELECTED DRAWING: Figure 1
【課題】確実に孔壁の安定および地下水の止水を図りつつ、少ない工程で合理的に施工できる杭の施工方法を提供すること。【解決手段】まず、汚染地盤１中に、下端部１５が粘性土層５に達するように筒状の地盤改良体１１を造成する。地盤改良体１１は、高圧噴射撹拌工法などによって造成される。そして、地盤改良体１１の内側の未改良地盤１３を地盤改良体１１の底部１７まで掘削し、地盤改良体１１の底部１７に、固化後の透水係数が所定の値以下の材料である難透水性材料１９を充填する。次に、平面視で筒状の地盤改良体１１の内側に位置する杭施工予定領域２５に、コンクリート製または鋼製の既製杭２３を打設する。既製杭２３は、難透水性材料１９、粘性土層５、砂層７を貫通して、支持層９に達する。その後、地盤改良体１１と既製杭２３との間にセメント系材料２７を充填する。【選択図】図１
METHOD FOR CONSTRUCTING PILE
杭の施工方法
FUJISAKI KATSUTOSHI (Autor:in) / AKIYAMA SADAYUKI (Autor:in) / TANAKA HIDEO (Autor:in) / SAKAMOTO MAMORU (Autor:in) / ITO TAKU (Autor:in) / MIKI KOJI (Autor:in) / TSUCHIYA TSUTOMU (Autor:in) / YOSHIDA TATSUO (Autor:in) / ABE HIROYUKI (Autor:in)
07.02.2019
Patent
Elektronische Ressource
Japanisch
IPC:
E02D
FOUNDATIONS
,
Gründungen
| Europäisches Patentamt | 2023
PILE FOUNDATION AND METHOD FOR CONSTRUCTING PILE FOUNDATION
| Europäisches Patentamt | 2020