EP0441076A1 - Rohrförmiger Metallpfahl mit Vorrichtung zur Schlämmeeinpressung im Bereich der Rohrwand - Google Patents

Rohrförmiger Metallpfahl mit Vorrichtung zur Schlämmeeinpressung im Bereich der Rohrwand Download PDF

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Publication number
EP0441076A1
EP0441076A1 EP90403595A EP90403595A EP0441076A1 EP 0441076 A1 EP0441076 A1 EP 0441076A1 EP 90403595 A EP90403595 A EP 90403595A EP 90403595 A EP90403595 A EP 90403595A EP 0441076 A1 EP0441076 A1 EP 0441076A1
Authority
EP
European Patent Office
Prior art keywords
injection
tube
tubular
wall
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Withdrawn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
EP90403595A
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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 EP0441076A1 publication Critical patent/EP0441076A1/de
Withdrawn legal-status Critical Current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
    • E02D5/62—Compacting the soil at the footing or in or along a casing by forcing cement or like material through tubes
    • 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
    • E02D5/24—Prefabricated piles
    • E02D5/28—Prefabricated piles made of steel or other metals

Definitions

  • the present invention can be used in particular in the field of anchor piles driven into the ground. Such piles are integrated into pile foundations made on land, in rivers or at sea.
  • the object of the invention is to propose a metal tubular pile equipped with an injection device of simple and robust design, capable of being installed without particular difficulty as well on micropiles, piles of small diameter (for example 600 mm ) or large diameter piles (for example 2,500 mm).
  • the invention proposes a metal tubular pile equipped with a device allowing the injection of grout in the vicinity of the wall of the tube forming the pile, of the type comprising a tubular injection pipe connected through a plurality of non-return valves to a plurality of injection orifices opening out in the vicinity of the wall of the tube and distributed along said tube, characterized in that at least one non-return valve is mounted on the injection line inside a transfer chamber communicating with at least one of said injection orifices.
  • the arrangement according to the invention of the non-return valves on the injection pipe itself makes it possible to limit the size of the openings made in the wall of the tube to that of the injection orifices proper and thus not to affect the resistance capacity of the tube.
  • the non-return valves benefit from total protection by their position inside the transfer chambers.
  • the rinsing of the valves after an injection operation is facilitated by the arrangement of the valves, thereby eliminating the risk of a cement plug forming at the inlet of the non-return valves.
  • the non-return valves consist of cuffs of elastic material, for example of elastomer, threaded on the outside of the injection pipe with regard to perforations suitably distributed along of driving.
  • the internal volume of the transfer chamber is lined with a filling material with elastic property and / or liable to fracture, for example polyurethane foam or wax.
  • the transfer chamber is provided with at least one injection orifice which does not pass through the wall of the tube.
  • the transfer chamber is delimited on at least one of its sides by a portion of the wall of the tube, said portion being provided with at least one injection orifice passing through the wall of the tube.
  • the injection pipe is divided into sections each provided with a non-return valve, said transfer chambers being pre-assembled on said sections before final association with the wall of the tube of the tubular pile.
  • the transfer chamber is produced from a tubular element crossed by the corresponding section of the injection pipe, said tubular element being welded to the wall of the tube of the pile around the injection orifice passing through said wall, and closed at its other end by a closure plate optionally pierced with another injection orifice.
  • the tubular element has at least one widened opening to allow the mounting of the injection pipe section provided with the non-return valve, said opening being closed by a connection sleeve disposed around said injection pipe.
  • the connection sleeve has an internal thread used for the assembly of two sections of the injection pipe.
  • the transfer chamber is produced from a cylindrical section of the pile tube, said section being of reduced axial extension and closed at its two ends by two plates circular sheet metal through which the corresponding section of the injection pipe passes.
  • the pile tube is obtained by fixing, for example by welding, end to end of the transfer chambers with intermediate tubular elements.
  • the tube 12 open at the bottom, has a large diameter (between 1 and 2 meters) for a length greater than 30 meters.
  • the tube 12 is pierced along a generatrix with several injection orifices 16 thus crossing the wall of the tube and intended for allow the flow of cement grout in the vicinity of the external face of the wall of the tube 12.
  • orifices 16 are regularly distributed along the tube at a spacing of several meters (in general between 3 and 5 meters) adapted to the characteristics of the stake sealing sought.
  • a variant not shown of the pile illustrated in FIG. 1 presents several (for example 2, 3 or 4) injection devices similar to device 14, distributed regularly over the internal periphery of the circular section of the tube taken perpendicular to the longitudinal axis of the latter.
  • the injection device 14 comprises an injection pipe 17 produced from a metal tube with a diameter of the order of 60 mm and on which are mounted non-return valves 18 intended to prevent the backflow of grout of cement in the pipe 17.
  • Each non-return valve is disposed inside a transfer chamber 20 communicating directly with one of the injection orifices 16 passing through the wall.
  • the lower end, if we consider FIG. 1, of the pipe 17 closed by a plug 22 is protected, in particular during the beating of the pile, by a strong sheet shield 23 with conical head, welded to the tube 12. It should be noted that the situation of the non-return valves on the injection pipe itself makes it possible to reduce the diameter of the injection orifices 16 drilled through the wall of the tube 12 to what is strictly necessary for the injection. This characteristic is advantageous in terms of the mechanical strength of the equipped tube.
  • the injection pipe equipped with the transfer chambers is mounted outside the pile, the transfer chambers being provided with orifices not not crossing the wall of the tube (the grout is injected on the outside face of the wall of the tube) and / or of holes crossing the wall of the tube (the grout is injected on the inside face of the tube).
  • FIG. 2 The enlarged partial view, illustrated in FIG. 2, of a portion of the tube 12 associated with a transfer chamber 20, makes it possible to appreciate the details of production and mounting of the various constituent elements of the injection device 14. More particularly , the section illustrated in Figure 2 is made along the common diametral plane between the tube 12 (along the axis XX ') and the pipe 17 (along the axis YY').
  • the injection pipe 17 is produced by a plurality of sections 24, 26 each carrying a non-return valve 18 constituted by a sleeve of elastomeric material such as rubber, threaded outside the line 17 to cover one or more perforations 28 formed in line 17 substantially in line with the injection orifice 16.
  • the orifice 16 is flared towards the outside of the tube 12.
  • the transfer chamber 20 made of welded sheet metal elements is fixed to the wall of the tube 12. More specifically, the envelope of the transfer chamber 20 is constituted by a tubular element 30, arranged perpendicular to the axis YY 'and closed by a plate 32 welded at 33.
  • the tubular element 30, of square, rectangular or circular, is traversed right through by the section 24 and has, at its lower part, an enlarged opening 34 allowing the mounting of the section 24 equipped with the non-return valve 18.
  • the enlarged opening 34 is closed by a sleeve of connection 36 welded at 35 to the tubular element 30.
  • the sleeve 36 is provided with an internal thread capable of receive on the one hand the threaded end of the section 24, on the other hand the threaded end of the following section 26 to carry out the assembly of the two sections of the pipe 17.
  • the upper part of the tubular element 30 is welded in 37 in the section 24, while the end of this same sleeve 30 located opposite the orifice 16 is welded at 39 on the internal wall of the tube 12 around this orifice 16. It can be noted that all the welds are carried out, without particular difficulty, from outside the transfer chamber. In a practical manner, a first step is to pre-assemble the transfer chambers and to mount them on the pipe 17, then to weld the tubular sleeves 30 on the wall of the tube 12 in line with the orifices 16 previously drilled.
  • the interior of the chamber is lined with a filling material 40 with elastic property and / or liable to fracture, such as expandable polyurethane foam or wax.
  • This lining prevents the entry of soil into the transfer chamber 20 during and after the pile driving.
  • This compressible (or fracturable) lining 40 is liable, during the injection of cement grout under pressure, to contract (or fracture) to allow, on the one hand, the cuff 18 to disengage from the wall of the tube 24, on the other hand to the grout to flow towards the orifice 16, while avoiding the formation of a grout plug after the injection either by resumption of its initial volume in the case of a compressible lining, or by the reduced dimensions of the passage offered to the grout in the case of a fracturable lining.
  • the internal volume of the transfer chamber is large enough to allow the grout, during a new injection, to make another passage in the filling material towards the corresponding injection orifice.
  • the placement in the ground of the pile according to the invention is conventionally carried out by driving the tube 12, for example by driving or vibro-driving.
  • the grout injection is then carried out using a grout injection line (not shown) equipped with two shutters, for example of the inflatable type, and lowered into line 17 so as to pressurize a portion of the pipe 17 straddling the non-return valve 18 in communication with a determined orifice 16.
  • the pressurization of this portion allows the flow of the grout through the perforation (s) 28, the valve 18 and the orifice 16 in order to seal the external wall of the tube 12 and improve the lateral friction of the latter relative to the surrounding land.
  • the injection of grout is carried out from the base of the pile, through the first orifice, then progressively going up orifice by orifice.
  • the injection pressure and the volume of grout injected are controlled by any known means.
  • the injection line is removed and the line cleaned with water.
  • the plate 32 is pierced with an injection orifice 41 allowing the injection of grout along the internal face of the wall of the tube 12 in order to improve the lateral friction of the pile on the ground plug inside the tube.
  • the invention therefore proposes inter alia a simple injection device which makes it possible, from a single non-return valve, to inject simultaneously on the external and internal faces of the wall of the tube 12.
  • the implementation of the invention allows, without difficulty, to practice successive injections at the same level of ground (the corresponding orifice 16 always remaining freely accessible) and even to modify the types of grout used (for example with the use of chemical grouts and silica gels or synthetic consolidating agents, in particular resins).
  • the resistant steel tube 52 is produced by the butt joint end, along the axis ZZ 'of the tube, transfer chambers 54 (54a to 54d) with tubular intermediate elements 56 (56a to 56d) with a length of between 3 and 5 meters.
  • the tube 52 can optionally be closed at the bottom by a shoe 58.
  • the injection pipe 60 itself made up of sections 62 (62a to 62c) assembled by threaded connections (64a to 64c), is arranged coaxially relative to the tube 52.
  • the injection pipe 60 is closed at the bottom by a plug 66, a sufficient distance being provided between the plug 66 and the first transfer chamber 54a to allow complete descent into the pipe 60 from the shutter lower of the injection line (not shown).
  • each transfer chamber contains a non-return valve 68 (68a to 68d) mounted on the injection pipe 60.
  • a section 62 of the pipe 60 carries the rubber cuff 68 constituting the non-return valve threaded on the outside of this section 62.
  • the cuff 68 covers one or more perforations 70 formed in the section 62 in line with injection orifices 72 passing through the wall of the tube 52 and arranged symmetrically with respect to the axis ZZ '(in the present case, the two orifices 72 are diametrically opposite).
  • the transfer chamber 54 is made of welded sheets from a cylindrical section 74 of the wall of the tube 52.
  • the section 74 of limited axial extension (of the order of a few decimeters) is closed (after the installation of the sleeve 68) by two circular sheet metal plates 76 and 78 welded at 80 and 82 at their peripheries, as illustrated in FIG. 4.
  • the plates 76 and 78, provided with central openings, are crossed by the section 62 and welded on this one at 84 and 86.
  • the plates 76 and 78 are welded at their peripheries to the two adjacent tubular elements 56 (for example 56a and 56b) at 88 and 90 as illustrated in FIG. 4.
  • the interior volume of the chamber 54 is lined with a filling material 92 with elastic property and / or liable to fracture such as expandable polyurethane foam or wax.
  • tubular elements 56 and the edges 74 have identical dimensions in diameter and thickness and are obtained from the same grade of steel to guarantee substantially identical resistance characteristics along the tube 52 forming the stake structure.
  • each section 62 is fitted with a rubber sleeve 68 and a transfer chamber 54.
  • the plate is welded.
  • bottom of the chamber 54a with a first tubular element 56a, itself closed by the shoe 58.
  • the threaded connection 64a is then mounted on the free end of the section 62a.
  • the other bottom plate of the chamber 54a is welded with the tubular element 56b.
  • the operation is repeated in identical sequences for the other constituent elements of the tube according to an assembly order identified in FIG. 3 by the indexing a, b, c, d ...., each new sequence starting with the screwing of the new pipe section 62 on the fitting 64 already mounted on the previous section.
  • the equipped pile illustrated in FIGS. 3 and 4 is of simple and robust structure presenting no particular difficulty during its assembly. Furthermore, the same transfer chamber is capable of supplying, from a single non-return valve, several orifices located at a determined level of the pile and distributed around its periphery.
  • the establishment and sealing of the pile 50 is carried out in a similar manner to that already described for the pile 10 and will not be described again in detail.
  • the invention is not limited to non-return valves of the rubber cuff type, but also includes the use of any other type of non-return valves located on the injection pipe (not shown), for example valves. constituted by split collars mounted on the outside of the pipe in line with the perforations allowing the passage of the grout, or valves constituted by slots with deformable lips made through the wall of the injection pipe.

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  • 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)
  • Piles And Underground Anchors (AREA)
EP90403595A 1990-02-06 1990-12-14 Rohrförmiger Metallpfahl mit Vorrichtung zur Schlämmeeinpressung im Bereich der Rohrwand Withdrawn EP0441076A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9001324 1990-02-06
FR9001324A FR2657905B1 (fr) 1990-02-06 1990-02-06 Pieu tubulaire metallique equipe d'un dispositif permettant l'injection de coulis au voisinage de la paroi du pieu.

Publications (1)

Publication Number Publication Date
EP0441076A1 true EP0441076A1 (de) 1991-08-14

Family

ID=9393410

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90403595A Withdrawn EP0441076A1 (de) 1990-02-06 1990-12-14 Rohrförmiger Metallpfahl mit Vorrichtung zur Schlämmeeinpressung im Bereich der Rohrwand

Country Status (4)

Country Link
US (1) US5129762A (de)
EP (1) EP0441076A1 (de)
AU (1) AU631479B2 (de)
FR (1) FR2657905B1 (de)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0598636A (ja) * 1991-10-08 1993-04-20 Ask Kenkyusho:Kk 筒状外殻基礎及びその造成方法
US5632575A (en) * 1994-08-30 1997-05-27 Lorenzen; Frank J. Method and apparatus for controlled pumping of bentonite around a pipe jacked tunnel
US5919004A (en) * 1997-11-20 1999-07-06 Christenson; John Method and apparatus for protective encapsulation of structural members
CN102605767A (zh) * 2012-03-27 2012-07-25 浙江大学城市学院 一种预留注浆管预制桩及其成桩工艺
CN102691296B (zh) * 2012-05-22 2015-02-11 广州市建筑科学研究院有限公司 一种桩侧静压注浆桩底旋喷注浆的管桩基础及其施工方法
CN110593142A (zh) * 2019-09-21 2019-12-20 北京凯新浩达工程技术有限公司 一种桥梁修复方法

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2569816A1 (fr) * 1984-08-31 1986-03-07 Soletanche Dispositif comportant une valve pour l'injection de coulis autour d'un pieu tubulaire enfonce dans le sol
FR2616508A1 (fr) * 1987-06-10 1988-12-16 Soletanche Dispositif pour l'injection de coulis au voisinage des parois d'un pieu tubulaire enfonce dans le sol

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1539176A (fr) * 1967-08-03 1968-09-13 Soletanche Dispositif de tirant destiné à être ancré dans le sol
IT1017641B (it) * 1974-05-31 1977-08-10 Meardi P Tirante d ancoraggio di muri pa ratie e simili con parte attiva ad aderenza incrementata contro il terreno
FR2423591A1 (fr) * 1978-04-18 1979-11-16 Sif Entreprise Bachy Ameliorations a la realisation de tirants ancres
GB8406847D0 (en) * 1984-03-16 1984-04-18 Earl & Wright Ltd Installing pile
FR2610652B1 (fr) * 1987-02-09 1991-09-06 Soletanche Procede de renforcement d'un pieu tubulaire battu, pieu obtenu par ce procede, dispositif pour mettre en oeuvre le procede
FR2616463B1 (fr) * 1987-06-10 1989-10-27 Soletanche Procede et dispositif pour l'injection de coulis au voisinage des parois d'un pieu tubulaire enfonce dans le sol

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2569816A1 (fr) * 1984-08-31 1986-03-07 Soletanche Dispositif comportant une valve pour l'injection de coulis autour d'un pieu tubulaire enfonce dans le sol
FR2616508A1 (fr) * 1987-06-10 1988-12-16 Soletanche Dispositif pour l'injection de coulis au voisinage des parois d'un pieu tubulaire enfonce dans le sol

Also Published As

Publication number Publication date
AU631479B2 (en) 1992-11-26
FR2657905B1 (fr) 1992-04-24
AU6994091A (en) 1991-08-08
US5129762A (en) 1992-07-14
FR2657905A1 (fr) 1991-08-09

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