EP0539630A1 - Méthode pour réaliser des pieux de fondation à base élargie dans le sol - Google Patents

Méthode pour réaliser des pieux de fondation à base élargie dans le sol Download PDF

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Publication number
EP0539630A1
EP0539630A1 EP91202837A EP91202837A EP0539630A1 EP 0539630 A1 EP0539630 A1 EP 0539630A1 EP 91202837 A EP91202837 A EP 91202837A EP 91202837 A EP91202837 A EP 91202837A EP 0539630 A1 EP0539630 A1 EP 0539630A1
Authority
EP
European Patent Office
Prior art keywords
drill head
pressure
outlet opening
drill
foundation pile
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP91202837A
Other languages
German (de)
English (en)
Inventor
Alexander Julien Verstraeten
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Beheersmaatschappij Verstraeten BV
Original Assignee
Beheersmaatschappij Verstraeten BV
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Beheersmaatschappij Verstraeten BV filed Critical Beheersmaatschappij Verstraeten BV
Priority to EP91202837A priority Critical patent/EP0539630A1/fr
Publication of EP0539630A1 publication Critical patent/EP0539630A1/fr
Withdrawn legal-status Critical Current

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
    • E02D5/22—Piles
    • E02D5/34—Concrete or concrete-like piles cast in position ; Apparatus for making same
    • E02D5/38—Concrete or concrete-like piles cast in position ; Apparatus for making same making by use of mould-pipes or other moulds
    • E02D5/44—Concrete or concrete-like piles cast in position ; Apparatus for making same making by use of mould-pipes or other moulds with enlarged footing or enlargements at the bottom of the pile
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D3/00—Improving or preserving soil or rock, e.g. preserving permafrost soil
    • E02D3/12—Consolidating by placing solidifying or pore-filling substances in the soil
    • E02D3/126—Consolidating by placing solidifying or pore-filling substances in the soil and mixing by rotating blades
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
    • E02D5/22—Piles
    • E02D5/62—Compacting the soil at the footing or in or along a casing by forcing cement or like material through tubes

Definitions

  • This invention relates to a method of providing a foundation pile with enlarged base in the ground, in which method a metal drill pipe fitted with a drill head at the lower end thereof is introduced into the ground under axial pressure while being rotated and during rotation of the drill pipe a hardening mass is supplied via an injection tube mounted within the drill pipe to an outlet opening at the tip of the drill head at a pressure above the hydrostatic pressure, the hardening mass mixing intensively with the soil mass stirred by the drill head.
  • the object of the invention is to provide a method which enables increasing the bearing capacity of the foundation pile.
  • the method according to the invention is characterized in that the hardening mass is supplied to the outlet opening at such a pressure that it forms a bearing zone around the foundation pile of a diameter greater than the diameter of the drill head.
  • the hardening mass is supplied to the outlet opening at a pressure of at least 500 bar.
  • a method is known under the name of "Jet Grouting", in which a thin, hollow needle comprising one or two outlet openings at the tip thereof is driven into the ground while being rotated, with a hardening mass being supplied to the outlet openings via the interior of the needle at pressures of 500 bar and more, which mass penetrates the surrounding soil in the form of a sharp jet.
  • a hardening mass being supplied to the outlet openings via the interior of the needle at pressures of 500 bar and more, which mass penetrates the surrounding soil in the form of a sharp jet.
  • Fig. 1 shows a metal drill pipe 1 fitted at the bottom thereof with a drill head 2, which is connected to the metal drill pipe 1, for instance by welding.
  • the drill head 2 comprises a plurality of ridges 5, which may optionally be provided with teeth to facilitate drilling and intensify the mixing of soil material with the grout flowing from the outlet opening 4.
  • the outlet opening 4 is provided in or adjacent the tip of the drill head 2.
  • the drill head may comprise more than one outlet opening 4.
  • a pipe or injection tube 3 suitable for high pressures, via which the fluid to be supplied to the drill head 2 during drilling can be passed to the outlet opening 4.
  • a non-bearing soil layer is indicated at 6, while a bearing soil layer is indicated at 7.
  • water and/or bentonite is supplied to the outlet opening 4 of the drill head 2 via the injection tube 3.
  • the water and/or bentonite primarily function as drilling fluid.
  • a mixture of water and cement is supplied to the injection tube 3 by switching the pump connected to it.
  • the ridges 5 provide for intensive mixing of the water/cement mixture flowing from the outlet opening with the soil material adjacent the drill head 2, as a result of which a substantially annular zone of soil material intensively mixed with grout is formed above the drill head.
  • the diameter of this zone 8 is equal to the diameter of the drill head 2.
  • the material in zone 8 adheres strongly to the external wall of the metal drill pipe 1 and, upon hardening of the mixture, is capable of transmitting bearing power to the surrounding soil.
  • the supply pressure for the hardening mass is typically 20-40 bar.
  • the bearing capacity of a foundation pile so formed is 250 tons if the diameter of the drill pipe is about 40 cm.
  • the grout mixture egressing in the form of a sharp, cutting jet can penetrate zone 9 located beyond the above-described zone 8, which zone 9 is in principle not stirred by the drill head when it is being bored into the ground or at least is stirred to a considerably lesser extent than the soil material in zone 8.
  • the grout mixture egressing from the outlet opening 4 yields a considerably enlarged pile base in zone 9, which contributes substantially to an increased bearing capacity.
  • a pile base (zone 9) of a diameter of 1.2-1.5 m can be obtained.
  • the diameter of zone 8 is equal to the diameter of the screwed head 2, i.e. about 60 cm.
  • a pile so constructed can bear a load of 500-750 tons, i.e. 2-3 times more than the known foundation pile, while extremely minimal settlement was observed.
  • the high bearing capacity is obtained by increasing both the point bearing capacity and the friction of the enlarged pile base.

Landscapes

  • Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Mining & Mineral Resources (AREA)
  • Paleontology (AREA)
  • Civil Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Agronomy & Crop Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Soil Sciences (AREA)
  • Piles And Underground Anchors (AREA)
EP91202837A 1991-10-31 1991-10-31 Méthode pour réaliser des pieux de fondation à base élargie dans le sol Withdrawn EP0539630A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP91202837A EP0539630A1 (fr) 1991-10-31 1991-10-31 Méthode pour réaliser des pieux de fondation à base élargie dans le sol

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP91202837A EP0539630A1 (fr) 1991-10-31 1991-10-31 Méthode pour réaliser des pieux de fondation à base élargie dans le sol

Publications (1)

Publication Number Publication Date
EP0539630A1 true EP0539630A1 (fr) 1993-05-05

Family

ID=8207976

Family Applications (1)

Application Number Title Priority Date Filing Date
EP91202837A Withdrawn EP0539630A1 (fr) 1991-10-31 1991-10-31 Méthode pour réaliser des pieux de fondation à base élargie dans le sol

Country Status (1)

Country Link
EP (1) EP0539630A1 (fr)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0665337A1 (fr) * 1994-01-27 1995-08-02 Hollandsche Beton Groep N.V. Ancrage injecté et sa méthode d'installation notamment pour murs de revêtement, bâtiments, protections des berges, murs de quais, etc.
FR2758577A1 (fr) * 1997-01-22 1998-07-24 Menard Soltraitement Procede, dispositif et materiaux pour consolider un terrain meuble et/ou compressible destine en particulier a recevoir sur lui un edifice
NL1018702C2 (nl) * 2001-08-03 2003-02-04 Verstraeten Funderingstech Bv Werkwijze voor het aanbrengen van een fundatiepaal in de grond, alsmede een fundatiepaal en een oplanger voor deze werkwijze, en een grondverdringingsboor.
CN103015423A (zh) * 2012-12-21 2013-04-03 广东永基建筑基础有限公司 静压射流桩墙成型设备及静压射流桩墙成型施工方法
RU2502849C1 (ru) * 2012-06-13 2013-12-27 Федеральное государственное бюджетное образовательное учреждение высшего профессионального образования "Саратовский государственный технический университет имени Гагарина Ю.А." (СГТУ имени Гагарина Ю.А.) Винтовой рабочий орган
CN110393056A (zh) * 2019-08-27 2019-11-01 贵州大学 一种烟苗移栽成穴钻头
CN110438985A (zh) * 2019-07-26 2019-11-12 湖南化工地质工程勘察院有限责任公司 钻孔灌注桩桩基持力层补强加固施工方法
CN110761268A (zh) * 2019-11-27 2020-02-07 湖北毅力机械有限公司 一种深层地基的施工方法
CN110777780A (zh) * 2019-10-25 2020-02-11 天津大学 一种混凝土管桩海上沉桩施工方法
CN110777779A (zh) * 2019-10-25 2020-02-11 天津大学 一种混凝土预制桩海上沉桩施工方法

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3802203A (en) * 1970-11-12 1974-04-09 Yoshio Ichise High pressure jet-grouting method
WO1986003533A1 (fr) * 1984-12-07 1986-06-19 Michel Crambes Procede de compactage-armature-injection ou de decompactage-drainage et de construction d'ouvrages lineaires et d'ouvrages plans dans les sols
WO1989003458A1 (fr) * 1987-10-07 1989-04-20 Michel Crambes Amelioration au procede de compactage-armature-injection ou de decompactage-drainage des sols par emploi de tubes auxiliaires

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3802203A (en) * 1970-11-12 1974-04-09 Yoshio Ichise High pressure jet-grouting method
WO1986003533A1 (fr) * 1984-12-07 1986-06-19 Michel Crambes Procede de compactage-armature-injection ou de decompactage-drainage et de construction d'ouvrages lineaires et d'ouvrages plans dans les sols
WO1989003458A1 (fr) * 1987-10-07 1989-04-20 Michel Crambes Amelioration au procede de compactage-armature-injection ou de decompactage-drainage des sols par emploi de tubes auxiliaires

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0665337A1 (fr) * 1994-01-27 1995-08-02 Hollandsche Beton Groep N.V. Ancrage injecté et sa méthode d'installation notamment pour murs de revêtement, bâtiments, protections des berges, murs de quais, etc.
FR2758577A1 (fr) * 1997-01-22 1998-07-24 Menard Soltraitement Procede, dispositif et materiaux pour consolider un terrain meuble et/ou compressible destine en particulier a recevoir sur lui un edifice
NL1018702C2 (nl) * 2001-08-03 2003-02-04 Verstraeten Funderingstech Bv Werkwijze voor het aanbrengen van een fundatiepaal in de grond, alsmede een fundatiepaal en een oplanger voor deze werkwijze, en een grondverdringingsboor.
WO2003012211A1 (fr) * 2001-08-03 2003-02-13 Funderingstechnieken Verstraeten B.V. Technique d'implantation dans le sol d'un pieu de fondation, pieu de fondation et semelle sur pieu utilisables dans le cadre de cette technique et trepan de terrassement
US7429148B2 (en) 2001-08-03 2008-09-30 Funderingstechnieken Verstraeten B.V. Method for making a foundation pile
RU2502849C1 (ru) * 2012-06-13 2013-12-27 Федеральное государственное бюджетное образовательное учреждение высшего профессионального образования "Саратовский государственный технический университет имени Гагарина Ю.А." (СГТУ имени Гагарина Ю.А.) Винтовой рабочий орган
CN103015423A (zh) * 2012-12-21 2013-04-03 广东永基建筑基础有限公司 静压射流桩墙成型设备及静压射流桩墙成型施工方法
CN110438985A (zh) * 2019-07-26 2019-11-12 湖南化工地质工程勘察院有限责任公司 钻孔灌注桩桩基持力层补强加固施工方法
CN110393056A (zh) * 2019-08-27 2019-11-01 贵州大学 一种烟苗移栽成穴钻头
CN110777780A (zh) * 2019-10-25 2020-02-11 天津大学 一种混凝土管桩海上沉桩施工方法
CN110777779A (zh) * 2019-10-25 2020-02-11 天津大学 一种混凝土预制桩海上沉桩施工方法
CN110761268A (zh) * 2019-11-27 2020-02-07 湖北毅力机械有限公司 一种深层地基的施工方法

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