EP0441077A1 - Herstellungsverfahren von Ortbetonfählen und Eindruckrohr zur Durchführung des Verfahrens - Google Patents

Herstellungsverfahren von Ortbetonfählen und Eindruckrohr zur Durchführung des Verfahrens Download PDF

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Publication number
EP0441077A1
EP0441077A1 EP90403596A EP90403596A EP0441077A1 EP 0441077 A1 EP0441077 A1 EP 0441077A1 EP 90403596 A EP90403596 A EP 90403596A EP 90403596 A EP90403596 A EP 90403596A EP 0441077 A1 EP0441077 A1 EP 0441077A1
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EP
European Patent Office
Prior art keywords
tube
injection
impression
shoe
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Withdrawn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
EP90403596A
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English (en)
French (fr)
Inventor
Yves Legendre
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.)
Entreprises Morillon Corvol Courbot SA
Original Assignee
Entreprises Morillon Corvol Courbot SA
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 Entreprises Morillon Corvol Courbot SA filed Critical Entreprises Morillon Corvol Courbot SA
Publication of EP0441077A1 publication Critical patent/EP0441077A1/de
Withdrawn legal-status Critical Current

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    • 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
    • E02D5/385—Concrete or concrete-like piles cast in position ; Apparatus for making same making by use of mould-pipes or other moulds with removal of the outer mould-pipes
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D15/00—Handling building or like materials for hydraulic engineering or foundations
    • E02D15/02—Handling of bulk concrete specially for foundation or hydraulic engineering purposes
    • E02D15/04—Placing concrete in mould-pipes, pile tubes, bore-holes or narrow shafts
    • 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

  • the invention relates to the production of piles molded in the ground, both the production method and the molded piles thus obtained.
  • the invention is particularly well suited to soft soils for which drilling techniques other than the continuous hollow auger, necessary to preserve the integrity of the molded pile, are difficult to implement and, consequently, expensive. Indeed, soft floors most often require either a pre-consolidation of the floor, for example by injection of grout, or the installation of a liner, for example a lost tube, to avoid the collapse of the walls. Furthermore, the dimensions of the molded piles produced by the continuous hollow auger technique are dependent on the maximum torque available at the drilling tool and practically limited to a length of 20 meters and a diameter of 1.2 meters.
  • the concrete is injected from an injection head located at the top of a cone-shaped shoe.
  • an injection head located at the top of a cone-shaped shoe.
  • Such an arrangement in which the injection head opens at the interface between the impression tube and the mass of concrete already in place causes an irregular distribution of the supply of concrete under pressure from the center to the periphery of the pile. This results in a non-negligible risk of necking for the pile by reducing its diametral section, a risk all the higher for molding piles in soft soils and especially when using thick concrete.
  • the invention proposes a new method for producing a molded pile, particularly well suited to soft soils and in particular capable of reducing the risks of necking, of easy and rapid implementation, and advantageously usable for making piles of large dimension both in length than in diameter.
  • the method is characterized in that the injection under pressure is carried out through the shoe from an extendable lance in clearance from the shoe at a distance from the latter.
  • the concrete supply is injected directly into the heart of the mass of concrete in place, for example at a distance of between 1 and 2 meters from the shoe / concrete in place interface.
  • the impression tube is raised simultaneously with concrete injection in a progressive manner with continuous control of the injection parameters, in particular to maintain a concreting pressure at the level of the shoe.
  • the invention also relates to a pile molded in the ground and produced according to any one of the variants of the method presented above.
  • the invention relates to a metal impression tube which can be used during the implementation of the method presented above. More particularly, the impression tube comprises a metal tube closed at the bottom by a shoe, an injection pipe connected to at least one injection head disposed at the free end of an extendable injection lance projecting through hoof in release and distance from the latter.
  • the injection lance preferably of the telescopic type, is extensible parallel to the axis of the tube by actuation means, for example of the hydraulic cylinder type, secured to the tube.
  • the injection head is positioned on the central axis of the impression tube.
  • it has lateral openings distributed regularly around its periphery. This ensures a uniform filling of the injection cavity formed by the impression tube during its ascent.
  • the injection head is retractable in a housing provided in the shoe so as to ensure its protection during the operation of driving the tube.
  • the shoe extends in a plane perpendicular to the axis of the tube and preferably is produced by a thick sheet welded to the foot of the latter.
  • the impression tube 10 illustrated diagrammatically in FIG. 1 mainly consists of an external tube 11 made of steel resistant to sinking and / or beating. This outer tube 11 is closed at the bottom by a shoe 12 extending in a plane perpendicular to the axis of the tube and made of thick sheet metal welded to the lower end of the tube (if we consider Figure 1).
  • the diameter of the impression tube 10, for example 1 meter, is substantially equal to that of the molded pile to be produced.
  • the impression tube 10 has a length of 30 meters.
  • An injection pipe 14 is arranged coaxially with the tube inside the latter and is held in place by a set of spacers 16 and 18 welded to the internal wall of the tube 11.
  • the pipe 14, called concreting has a diameter (for example 10 cm) suitable for the passage of any setting mixture such as conventional pile concrete or concrete with metallic fibers.
  • the spacer 18 also serves to hold in place an annular jack 20, hydraulically controlled from a connection line 22, and capable of actuating in linear extension or retraction along the axis XX 'of the tube 11 a lance d extendable injection 24 extending the pipe 14 and of slightly smaller diameter than that of the pipe 14.
  • the extendable lance 24 of the telescopic type is terminated by an injection head 26 which, in its retracted position (illustrated in FIG. 1), is retracted into an additional protective housing 28 provided in the shoe.
  • the head has a frustoconical shape with point directed upwards in FIG. 1 to thereby achieve an axial abutment cooperation with the shoe 12. This arrangement allows good protection of the injection head and transmission of axial forces on the shoe 12 during the operation of driving the impression tube 10 into the ground.
  • the head 26 (26a) is moreover provided with lateral orifices 30 (30a) distributed regularly at its periphery.
  • the injection lance 24 is moved by the piston of the jack in the axial extension position in which its free end carrying the head 26a projects through the shoe 12 in clearance from the latter up to an adjustable distance of between 1 and 2 meters from the shoe (the position 26a of the head and the annular piston of the jack 20 are illustrated in dotted lines in FIG. 1). It is thus possible to inject under the foot of the tube beyond the shoe the grip mixture.
  • the annular cylinder is replaced by several cylinders mounted in parallel.
  • the means for actuating the lance are of the elastic type with axial extension and disposed between a fixed stop fixed to the tube and a mobile stop fixed to the lance, for example made up of a stack of Belleville washers mounted at the head - spade, compressed during the sinking of the tube and expandable during the ascent of the latter.
  • the jack (s) and the telescopic lance are capable of being controlled in an intermediate position between the retracted position and a position of maximum axial extension to control the distance of the injection head from the shoe (in particular at during the injection) depending on the conditions of production of the molded pile, for example the types of soil and / or concrete used, the diameter of the pile, etc.
  • the shape and the mounting through the shoe of the injection head are modified to adapt to the pile model to be produced and to the type of ground intended to receive the stake.
  • Some tubes are equipped with a plurality of expandable lances with separate injection heads.
  • the injection heads are preferably arranged in axial symmetry with respect to the axis XX 'of the tube (this symmetry incorporating the possible case of an injection head on the axis of the tube).
  • FIG. 2 illustrates the various stages of implementation of the method according to the invention. More precisely, FIG. 2a shows the impression tube 10 during sinking into the ground S. Sinking is carried out by any conventional means adapted to the characteristics of the soil in which the pile is to be produced, in particular a vibro-sinking device or of threshing. By way of nonlimiting example, the tube 10 is dark using a vibratory driving head suitably secured to the head of the impression tube 10.
  • the movable assembly formed of the tube 10 and the vibro-driving head 32 is on the one hand erected and held vertically, on the other hand implemented using an appropriate apparatus, not shown, comprising inter alia a guide mast with winch or mobile crane and a hydraulic pressure generator group.
  • an appropriate apparatus not shown, comprising inter alia a guide mast with winch or mobile crane and a hydraulic pressure generator group.
  • the invention is capable of being implemented both on land (case illustrated in FIG. 2) and in an aquatic environment (marine or river) from a barge or a platform. form.
  • Figure 2b shows the position of the impression tube 10 in the ground at the end of driving. It can be noted that during the entire sinking operation, the injection head is in the "protective" position retracted in the shoe 12. It it should be noted that the sinking of the tube 10 closed at the bottom compacts the ground at a point and along the walls of the housing 33 of the pile.
  • the injection lance is gradually extended and the outlet of the injection head by pressurizing the hydraulic cylinder 20.
  • the concrete 34 is injected under pressure through the orifices 30 from the head 26 into the mass of concrete already in place according to the arrows shown in FIG. 2c to occupy the cavity formed in the ground by the simultaneous ascent of the impression tube 10 (the extraction of the tube 10 being carried out with the help of the vibrating head 32).
  • the position of the injection head released from the shoe allows a regular compactness of the concrete and a good interpenetration of the latter with the walls of the housing 33.
  • the injection proper is carried out gradually relative to the ascent rate of the impression tube with continuous control of injection parameters such as injection pressure and volume of concrete injected as a function of the rise in the dark tube. This makes it possible in particular to maintain a concreting pressure at the level of the shoe, for example of the order of 7 bars (for a much higher injection pressure at the outlet of the concrete pump taking into account the pressure drops in line 14) .
  • the impression tube 10 is completely extracted from the soil ready to be reused.
  • a metal reinforcement cage (not shown) is then vibrated into the freshly molded concrete pile.
  • the invention is not limited to piles with a circular section but can be used to make piles with a polygonal section, for example square, according to the corresponding shape adopted during the manufacture of the impression tube 10.

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  • Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Mining & Mineral Resources (AREA)
  • Paleontology (AREA)
  • Civil Engineering (AREA)
  • Piles And Underground Anchors (AREA)
EP90403596A 1990-02-06 1990-12-14 Herstellungsverfahren von Ortbetonfählen und Eindruckrohr zur Durchführung des Verfahrens Withdrawn EP0441077A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9001323A FR2657906A1 (fr) 1990-02-06 1990-02-06 Procede de realisation de pieux moules dans le sol, pieux moules ainsi obtenus et tube-empreinte utilisable pour mettre en óoeuvre ledit procede.
FR9001323 1990-02-06

Publications (1)

Publication Number Publication Date
EP0441077A1 true EP0441077A1 (de) 1991-08-14

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EP90403596A Withdrawn EP0441077A1 (de) 1990-02-06 1990-12-14 Herstellungsverfahren von Ortbetonfählen und Eindruckrohr zur Durchführung des Verfahrens

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EP (1) EP0441077A1 (de)
FR (1) FR2657906A1 (de)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2168078A1 (es) * 2000-09-06 2002-05-16 Rodio Cimentaciones Especiales Dispositivo de hormigonado para cabezales de rotacion de barrenas continuas.
CN100432341C (zh) * 2006-06-26 2008-11-12 钱勇 后注浆自引孔phc管桩尖防锈帽施工装置及其施工工艺
CN100453742C (zh) * 2006-06-30 2009-01-21 王国奋 沉管预制钢砼扩底桩的扩底、成桩方法
CN101158154B (zh) * 2006-06-30 2010-06-09 王国奋 沉管预制钢砼扩底桩的扩底、成桩方法
CN101161952B (zh) * 2006-06-30 2010-09-01 王国奋 沉管预制钢砼扩底桩的扩底、成桩方法
CN101158156B (zh) * 2006-06-30 2010-09-15 王国奋 沉管预制钢砼扩底桩的扩底、成桩方法
CN101158155B (zh) * 2006-06-30 2010-09-15 王国奋 沉管预制钢砼扩底桩的扩底、成桩方法
CN101161951B (zh) * 2006-06-30 2010-09-15 王国奋 沉管预制钢砼扩底桩的扩底、成桩方法
CN114837187A (zh) * 2022-03-28 2022-08-02 中冶集团武汉勘察研究院有限公司 用于钻孔灌注桩混凝土浇筑导管安装的支撑装置及其使用方法
CN117071566A (zh) * 2023-10-19 2023-11-17 中国建筑第四工程局有限公司 一种地下连续墙接头注浆机

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106192997A (zh) * 2015-05-28 2016-12-07 毕建东 静压沉管压灌桩的成桩及辅助方法与装置和应用
CN114892667B (zh) * 2022-05-26 2023-08-11 煤炭科学技术研究院有限公司 一种用于煤矿喷涂堵漏风材料的辅助机械手

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB989635A (en) * 1961-05-31 1965-04-22 Heinz Staunau A concrete pile
US3869869A (en) * 1973-11-26 1975-03-11 Chen Paul Chuan Pao Piling system
FR2401114A1 (fr) * 1977-07-01 1979-03-23 Raffinage Cie Francaise Perfectionnements aux fibres, utilisables notamment pour la constitution d'elements de construction armes, procede de preparation et applications de ces fibres et elements
DE3612437A1 (de) * 1986-04-12 1987-10-15 Preussag Ag Bauwesen Verfahren zur herstellung von betonsaeulen im boden und vorrichtung zur durchfuehrung des verfahrens
EP0293584A1 (de) * 1987-06-02 1988-12-07 Bauer Spezialtiefbau GmbH Bohrvorrichtung für ein Hochdruck-Injektions-Bohrverfahren

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB989635A (en) * 1961-05-31 1965-04-22 Heinz Staunau A concrete pile
US3869869A (en) * 1973-11-26 1975-03-11 Chen Paul Chuan Pao Piling system
FR2401114A1 (fr) * 1977-07-01 1979-03-23 Raffinage Cie Francaise Perfectionnements aux fibres, utilisables notamment pour la constitution d'elements de construction armes, procede de preparation et applications de ces fibres et elements
DE3612437A1 (de) * 1986-04-12 1987-10-15 Preussag Ag Bauwesen Verfahren zur herstellung von betonsaeulen im boden und vorrichtung zur durchfuehrung des verfahrens
EP0293584A1 (de) * 1987-06-02 1988-12-07 Bauer Spezialtiefbau GmbH Bohrvorrichtung für ein Hochdruck-Injektions-Bohrverfahren

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2168078A1 (es) * 2000-09-06 2002-05-16 Rodio Cimentaciones Especiales Dispositivo de hormigonado para cabezales de rotacion de barrenas continuas.
CN100432341C (zh) * 2006-06-26 2008-11-12 钱勇 后注浆自引孔phc管桩尖防锈帽施工装置及其施工工艺
CN100453742C (zh) * 2006-06-30 2009-01-21 王国奋 沉管预制钢砼扩底桩的扩底、成桩方法
CN101158154B (zh) * 2006-06-30 2010-06-09 王国奋 沉管预制钢砼扩底桩的扩底、成桩方法
CN101161952B (zh) * 2006-06-30 2010-09-01 王国奋 沉管预制钢砼扩底桩的扩底、成桩方法
CN101158156B (zh) * 2006-06-30 2010-09-15 王国奋 沉管预制钢砼扩底桩的扩底、成桩方法
CN101158155B (zh) * 2006-06-30 2010-09-15 王国奋 沉管预制钢砼扩底桩的扩底、成桩方法
CN101161951B (zh) * 2006-06-30 2010-09-15 王国奋 沉管预制钢砼扩底桩的扩底、成桩方法
CN114837187A (zh) * 2022-03-28 2022-08-02 中冶集团武汉勘察研究院有限公司 用于钻孔灌注桩混凝土浇筑导管安装的支撑装置及其使用方法
CN117071566A (zh) * 2023-10-19 2023-11-17 中国建筑第四工程局有限公司 一种地下连续墙接头注浆机
CN117071566B (zh) * 2023-10-19 2024-01-02 中国建筑第四工程局有限公司 一种地下连续墙接头注浆机

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Publication number Publication date
FR2657906A1 (fr) 1991-08-09

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