EP1688543B1 - Amélioration de la consolidation du sol par des colonnes hybrides - Google Patents

Amélioration de la consolidation du sol par des colonnes hybrides Download PDF

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Publication number
EP1688543B1
EP1688543B1 EP06000386A EP06000386A EP1688543B1 EP 1688543 B1 EP1688543 B1 EP 1688543B1 EP 06000386 A EP06000386 A EP 06000386A EP 06000386 A EP06000386 A EP 06000386A EP 1688543 B1 EP1688543 B1 EP 1688543B1
Authority
EP
European Patent Office
Prior art keywords
piles
produced
borehole
producing
pile portion
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.)
Expired - Lifetime
Application number
EP06000386A
Other languages
German (de)
English (en)
Other versions
EP1688543A2 (fr
EP1688543A3 (fr
Inventor
Thierry Bret
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.)
Keller Grundbau GmbH
Original Assignee
Keller Grundbau GmbH
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 Keller Grundbau GmbH filed Critical Keller Grundbau GmbH
Publication of EP1688543A2 publication Critical patent/EP1688543A2/fr
Publication of EP1688543A3 publication Critical patent/EP1688543A3/fr
Application granted granted Critical
Publication of EP1688543B1 publication Critical patent/EP1688543B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • 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
    • E02D3/123—Consolidating by placing solidifying or pore-filling substances in the soil and compacting the soil
    • 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
    • E02D3/02—Improving by compacting
    • E02D3/08—Improving by compacting by inserting stones or lost bodies, e.g. compaction piles
    • 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
    • E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
    • E02D5/22—Piles
    • E02D5/48—Piles varying in construction along their length, i.e. along the body between head and shoe, e.g. made of different materials along their length
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D7/00—Methods or apparatus for placing sheet pile bulkheads, piles, mouldpipes, or other moulds
    • E02D7/02—Placing by driving
    • E02D7/06—Power-driven drivers
    • E02D7/14—Components for drivers inasmuch as not specially for a specific driver construction

Definitions

  • the invention relates to a method for ground improvement for the construction of foundations by placing columns in the ground, which are distributed over the surface according to a grid and each a lower set tied column section of settable material such as mortar or concrete and a respective upper compacted column section of rolligem Have material like gravel.
  • the bottom pillars may optionally have a thickened pillar base made of a rolled material with or without added binder.
  • the bottom columns comprise a lower column section, which is optionally supported on the pedestal and which is produced free in the growing ground from bottom to top of rolligem material, and an upper column section, the first of the completion of the lower column section introduced from enclosure a tubular body or a Geotextilschlauch, which is filled from bottom to top with rolling material, wherein the envelope extends into the lower column section.
  • the rolling material of the soil column can be used with or without binder additive.
  • From the GB 515 120 is a generic method for producing piles in the ground by means of sinker known in which a concrete pile receives a head of moist compacted sand.
  • the sand serves exclusively as a transfer medium in mechanically compacting the concrete within an upper soil layer with low shear resistance.
  • a foundation improvement method for building foundations in which pillars of resilient concrete are produced in a layer of low bearing capacity, which at the top freely terminate approximately centrally in a bulk material load-bearing layer of cellular material.
  • a foundation plate or individual foundations is constructed at a distance from the pile heads.
  • the present invention has for its object to provide a method for ground improvement of the type mentioned for the construction of foundations, with the fast and inexpensive the desired improvements can be brought about, the method should be easy to carry out.
  • the solution of claim 1 for this is that for the preparation of the lower column section introduced a hollow tool displacing the soil and the abbindbare material is introduced when pulling the hollow tool out of this in the borehole, directly on the heads of the columns single or Stenderfundêt noir or a foundation plate to be built.
  • the settable material ie mortar or concrete, in particular discharged substantially without pressure when pulling the hollow tool into the borehole.
  • the lower column section consists of a Vollverdrängererklale, in the production of no grown soil is excavated or rinsed, while the upper column section is produced as Wilsonttelklam, in particular binder-free material.
  • the diameter of the upper column section preferably considerably larger than the diameter of the lower column section.
  • the upper column section can be led to the lower edge of the foundation of a building to be built.
  • the main advantage of these hybrid floor columns is that the upper, relatively short column section can reduce stresses in the foundation plate and thus allows a reduced reinforcement of the same.
  • the use of a rotary drilling tool with a load is provided for producing the lower column section.
  • the production of the lower column section is provided using a Senkrohres with a Friedsatzrüttler.
  • the tool can be lowered quickly, even in unfavorable soil conditions, which is superior to the relatively lower shaking speed of deep vibrators.
  • the drill pipe or the sinker can already be filled in advance with the curable material, so that the borehole is filled for the lower column section without further preparation measures when pulling the tube. Due to the mere displacement during the production of the borehole, an initial ground improvement by soil compaction is already being created.
  • the lower column sections allow the structural loads to be removed into load-bearing layers, while the upper column sections can absorb the shear forces without damage.
  • a covering or bonding area is formed when the rolling material of the upper pillar portion partially penetrates into the not yet set material of the lower pillar portion.
  • the coverage area may be on the order of 0.5 m.
  • Suitable diameters for the hollow tools corresponding to the diameters for the borehole of the lower column section are approximately between 200 and 600 mm.
  • a deep vibrator is shaken up into the head region of the lower column section and then drawn with the application of rolled material.
  • stepwise pulling and stopping the rolling material of the upper column section to the column head be compacted. It should be used gravel or gravel.
  • a compacted leveling layer is produced, on which then a foundation plate is produced.
  • the said leveling layer can also be produced in advance before the beginning of the column production, with the column heads then being pulled to the upper edge of the leveling layer.
  • the underlying foundation plate thus rests on the column heads and the intermediate leveling layer.
  • the grid by which the columns are distributed over the surface of the ground, can be chosen according to the extent of the required ground improvement, for example, grid dimensions of 2, 3 or 4 m represent realistic sizes.
  • the depth of the individual columns can be up to about 20 m, the upper column section being relatively short in comparison with the lower column section.
  • the lower column sections are not reinforced and thus fast and easy to produce.
  • FIG. 1 For example, in a vertical bottom section, two similar columns 11 are shown, each comprising a lower column section 12 of cured settable material such as mortar or concrete and an upper column section 13 of compacted ballast. Between the two is a transition section 14, which is formed by the fact that gravel is shaken into the not yet set material of the column 12.
  • a transition section 14 On the column heads 15 is a single foundation or strip foundation 16, which protrudes from the processed planum 17.
  • the planum 17 is covered with a foundation plate 18, which fills the spaces between individual foundations 16.
  • the individual foundation 16 forms a vault structure with two columns 11 or with two rows of columns.
  • FIG. 2 a vertical bottom section is shown in which in turn two vertical columns 11 are cut. These also each consist of a hardened lower column section 12 of abbindbarem material, an upper column section 13 of compacted ballast and a transition section 14, which is formed by gravel is shaken into the not yet set material of the column 12.
  • the subgrade 17, on which a continuous foundation plate 18 rests is formed by an equalization layer 19, which fills up the spaces between the column heads 15.
  • the foundation plate 18 rests directly on the column heads 15.
  • a vault is formed by two pillars 11 or two rows of columns and the compensation layer 19.
  • FIG. 3 in representation a) the production phase 1 for the production of a lower column section, in illustration b) the production phase 2 for the production of an upper column section and in figure c) a schematic diagram of a tool for the first production phase are shown.
  • the first phase there are three steps (1 to 3), in the second phase two steps (4, 5) are distinguished.
  • a working scaffold 22 for a screwdriver 23 is provided on a supporting bead 21.
  • the upper end of the auger 23 is connected via a hose 24 to a concrete pump 25. If necessary, concrete or fresh mortar from a vehicle 26 is filled in the concrete pump.
  • the drilling tool 23 is pulled while flowing out of the concrete or mortar, wherein substantially no soil is to be excavated further.
  • the concrete or mortar flows substantially without pressure from the interior of the drilling tool 23 in the resulting by displacement borehole 27 a.
  • a known deep vibrator 28 is attached to a feed hopper 29.
  • the deep vibrator is already shaken into the area of the lower column section.
  • a vehicle 30 ballast is filled into the hopper 29.
  • FIG. 4 in representation a) the production phase 1 for the production of a lower column section, in illustration b) the production phase 2 for the production of an upper column section and in figure c) a schematic diagram of a tool for the first production phase are shown.
  • the first phase are three steps (1 to 3), in the second phase two steps (4, 5).
  • a working scaffold 22 for a lowering tube 33 and a topping vibrator 35 is provided on a supporting bead 21.
  • the upper end of the Senkrohres 33 is connected via a hose 24 with a concrete pump 25. If necessary, concrete or fresh mortar from a vehicle 26 is filled in the concrete pump.
  • the lowering tube 33 is pulled while flowing out of the concrete or mortar, wherein substantially no soil is to be excavated further.
  • the concrete or mortar flows substantially without pressure from the interior of the Senkrohres in the resulting by displacement borehole 27 a.
  • a known deep vibrator 28 is attached to a feed hopper 29.
  • the deep vibrator is already shaken into the area of the lower column section.
  • a vehicle 30 ballast is filled into the hopper 29.
  • the lowering tube 33 is shown, on which a feed hopper 34 and the Aufsatzrüttler 35 can be seen. Furthermore, a controllable flap 36 is shown at the lower end of the lowering tube 33. Instead of the controllable flap, a lid can also be used. Between the Aufsatzrüttler 35 and the hopper 34 is a coupling 37th

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  • Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Paleontology (AREA)
  • Civil Engineering (AREA)
  • Mining & Mineral Resources (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Agronomy & Crop Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Soil Sciences (AREA)
  • Investigation Of Foundation Soil And Reinforcement Of Foundation Soil By Compacting Or Drainage (AREA)
  • Piles And Underground Anchors (AREA)

Claims (11)

  1. Procédé pour l'amélioration d'un sol de fondation, en vue d'y installer des fondations, par l'introduction dans le sol de colonnes (11) qui sont réparties sur la surface suivant un quadrillage et qui possèdent chacune une partie inférieure de colonne durcie (12) en matériau durcissable tel que du mortier ou du béton et une partie supérieure de colonne compactée (13) constituée de matériau pulvérulent tel que de la pierraille, sachant que pour réaliser la partie inférieure de colonne (12), on enfonce un outil creux en refoulant le sol, et le matériau durcissable est introduit dans le trou foré (27) lorsqu'on tire l'outil creux hors de celui-ci,
    caractérisé en ce qu'on installe directement sur les têtes (15) des colonnes (11) des semelles de fondation (16) individuelles ou filantes ou une dalle de fondation (18).
  2. Procédé selon la revendication 1, caractérisé en ce que le matériau durcissable est déversé sans être compacté lorsqu'on tire l'outil creux.
  3. Procédé selon la revendication 1 ou 2, caractérisé en ce qu'on utilise pour réaliser la partie inférieure de colonne un outil de forage rotatif (23) avec une surcharge.
  4. Procédé selon la revendication 1 ou 2, caractérisé en ce qu'on utilise pour réaliser la partie inférieure de colonne un tube de forage (33) avec un vibrateur rapporté (35).
  5. Procédé selon l'une des revendications 1 à 4, caractérisé en ce que, pour réaliser la partie supérieure de colonne (13), on enfonce dans le trou foré ouvert (27) un appareil pour vibration profonde (28) en le faisant vibrer, et le matériau pulvérulent est introduit dans le trou foré (27) lorsqu'on tire l'appareil pour vibration profonde (28) hors de celui-ci.
  6. Procédé selon la revendication 5, caractérisé en ce que, afin de réaliser une zone de chevauchement (14) entre les deux parties de colonne (12, 13), on enfonce notamment d'environ 0,5 m l'appareil pour vibration profonde (28) dans la partie inférieure de colonne (12), en le faisant vibrer, avant le durcissement du matériau durcissable.
  7. Procédé selon l'une des revendications 1 à 6, caractérisé en ce qu'on produit au moyen de l'outil creux un trou foré (27) d'environ 200 à 600 mm de diamètre exclusivement par refoulement.
  8. Procédé selon l'une des revendications 1 à 7, caractérisé en ce qu'on crée le trou foré (27) jusqu'à une profondeur d'environ 20 m.
  9. Procédé selon l'une des revendications 1 à 8, caractérisé en ce qu'on réalise entre les têtes (15) des colonnes (11) une couche d'égalisation compactée (19), sur laquelle est réalisée la dalle de fondation (18).
  10. Procédé selon la revendication 9, caractérisé en ce que la couche d'égalisation (19) sur laquelle est ensuite réalisée la dalle de fondation (18) est réalisée avant de réaliser les colonnes (11), dont les têtes (15) s'étendent jusque dans la couche d'égalisation (19).
  11. Procédé selon l'une des revendications 1 à 10, caractérisé en ce qu'on utilise pour la disposition des colonnes (11) un quadrillage avec une dimension de quadrillage d'au plus environ 4 m.
EP06000386A 2005-01-10 2006-01-10 Amélioration de la consolidation du sol par des colonnes hybrides Expired - Lifetime EP1688543B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102005001227A DE102005001227A1 (de) 2005-01-10 2005-01-10 Baugrundverbesserung durch Hybrid- Säulen

Publications (3)

Publication Number Publication Date
EP1688543A2 EP1688543A2 (fr) 2006-08-09
EP1688543A3 EP1688543A3 (fr) 2006-08-23
EP1688543B1 true EP1688543B1 (fr) 2012-12-12

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ID=36218472

Family Applications (1)

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EP06000386A Expired - Lifetime EP1688543B1 (fr) 2005-01-10 2006-01-10 Amélioration de la consolidation du sol par des colonnes hybrides

Country Status (2)

Country Link
EP (1) EP1688543B1 (fr)
DE (1) DE102005001227A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2212478B1 (fr) 2007-10-22 2016-08-03 Geopier Foundation Company, Inc. Procédé et appareil pour construire des pieux de support à partir d'un ou de plusieurs levages successifs formés dans une matrice de sol

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1698731A1 (fr) 2005-03-04 2006-09-06 KELLER GRUNDBAU GmbH Outil de forage pour améliorer le terrain des fondations avec des colonnes de matériel dans le sol
IT1393586B1 (it) * 2009-04-10 2012-04-27 Soilmec Spa Dispositivo per l'alimentazione di materiali inerti a sistemi di compattazione a vibrazione del terreno.
FR2960571B1 (fr) 2010-05-27 2012-06-22 Soletanche Freyssinet Machine et procede pour la realisation de colonnes dans un sol
CN104594330A (zh) * 2015-01-16 2015-05-06 刘献刚 一种高强置换墩复合地基处理方法和高强置换墩
DE102015105701A1 (de) 2015-04-14 2016-10-20 Karl-Heinz Jörger Vorrichtung zum Einbringen von Hybrid-Säulen in einen Boden zur Baugrundverbesserung
AU2017418336B2 (en) * 2017-06-12 2024-06-13 Ppi Engineering & Construction Services, Llc Combination pier
CN108411889B (zh) * 2018-03-07 2021-02-05 清华大学 一种结构化胶结碎石桩及其施工方法
CN113684814A (zh) * 2021-09-29 2021-11-23 延安大学 适用于深厚湿陷性黄土场地的管桩复合地基及其施工方法

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB515120A (en) * 1938-05-24 1939-11-27 Alfred Hiley Improved method of and means for forming concrete piles
GB8418991D0 (en) * 1984-07-25 1984-08-30 Cementation Piling & Found Ground treatment
FR2642777B1 (fr) * 1989-02-09 1991-05-24 Sif Entreprise Bachy Dispositif pour l'execution a la tariere continue creuse de pieux moules dans le sol
NL9400987A (nl) * 1994-06-16 1996-02-01 Heiwerken P Van T Wout Waddinx Werkwijze voor het aanbrengen van betonnen heipalen in de bodem.
JP3627772B2 (ja) * 1995-12-25 2005-03-09 株式会社ジオトップ 免震基礎構造
JPH09268553A (ja) * 1996-04-02 1997-10-14 Shimizu Corp 砂撒き装置
US6672015B2 (en) * 1999-02-25 2004-01-06 Menard Soltraitement Concrete pile made of such a concrete and method for drilling a hole adapted for receiving the improved concrete pile in a weak ground
FR2796405B1 (fr) * 1999-07-16 2001-09-07 Keller Grundbau Gmbh Procede d'amelioration de sols au moyen de colonnes de chaux
DE10108602A1 (de) * 2001-02-22 2002-09-12 Keller Grundbau Gmbh Verfahren zum Herstellen von Säulen
NL1020241C2 (nl) * 2002-03-25 2003-09-29 Pacoma B V Grondverdringende boor.

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2212478B1 (fr) 2007-10-22 2016-08-03 Geopier Foundation Company, Inc. Procédé et appareil pour construire des pieux de support à partir d'un ou de plusieurs levages successifs formés dans une matrice de sol

Also Published As

Publication number Publication date
EP1688543A2 (fr) 2006-08-09
EP1688543A3 (fr) 2006-08-23
DE102005001227A1 (de) 2006-07-20

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