WO2024056237A1 - Procédé de formation d'un pieu de fondation dans le sol - Google Patents

Procédé de formation d'un pieu de fondation dans le sol Download PDF

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Publication number
WO2024056237A1
WO2024056237A1 PCT/EP2023/069445 EP2023069445W WO2024056237A1 WO 2024056237 A1 WO2024056237 A1 WO 2024056237A1 EP 2023069445 W EP2023069445 W EP 2023069445W WO 2024056237 A1 WO2024056237 A1 WO 2024056237A1
Authority
WO
WIPO (PCT)
Prior art keywords
pile tube
pile
handling device
medium
bore
Prior art date
Application number
PCT/EP2023/069445
Other languages
German (de)
English (en)
Inventor
Paul Scheller
Original Assignee
Bauer Spezialtiefbau 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 Bauer Spezialtiefbau Gmbh filed Critical Bauer Spezialtiefbau Gmbh
Publication of WO2024056237A1 publication Critical patent/WO2024056237A1/fr

Links

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
    • 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
    • E02D15/06—Placing concrete under water
    • 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
    • E02D15/08—Sinking workpieces into water or soil inasmuch as not provided for elsewhere
    • 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
    • E02D5/40—Concrete or concrete-like piles cast in position ; Apparatus for making same making by use of mould-pipes or other moulds in open water
    • 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
    • E02D5/46—Concrete or concrete-like piles cast in position ; Apparatus for making same making in situ by forcing bonding agents into gravel fillings or the soil
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D13/00—Accessories for placing or removing piles or bulkheads, e.g. noise attenuating chambers
    • 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
    • E02D5/66—Mould-pipes or other moulds
    • E02D5/665—Mould-pipes or other moulds for making piles
    • 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
    • E02D7/28—Placing of hollow pipes or mould pipes by means arranged inside the piles or pipes

Definitions

  • the invention relates to a method for forming a foundation pile in the ground, in particular in a body of water, in which a hole is created in the ground, a pile tube is gripped by means of a handling device and inserted into the hole and into an annular space between a wall of the hole and an outer circumference of the pile tube, a hardenable medium is introduced, which hardens to form the foundation pile, according to the preamble of claim 1.
  • EP 2 930 275 A1 discloses a method and an arrangement for producing a foundation pile for a structure in water.
  • a borehole with a support pipe is first created in the ground.
  • the resulting hole is filled with a liquid, especially water.
  • a pile pipe is inserted into the cased borehole created in this way, for which a simple steel pipe with a tubular base body is used.
  • the external support pipe is then pulled out and the annular space between the inserted pile pipe standing on the bottom of the borehole and the surrounding bore wall is treated with a hardenable medium.
  • the surrounding water can remain within the pile tube.
  • the load-bearing capacity of the foundation pile created in this way is determined by the outer surface of the pile tube used in relation to the surrounding soil with the hardened medium in the surrounding annular space. If necessary, the interior space, which is only filled with water, can be used to insert measuring or testing equipment.
  • a device for handling and inserting a pile pipe into a bore is known.
  • the device is ready to be attached a suspension cable of a crane.
  • gripping elements an annular edge of the pile tube can be gripped in a non-positive manner.
  • the device is designed such that the pile tube can be pivoted from a horizontal storage position into a vertical insertion position.
  • an arrangement and a method for producing an underwater foundation with an underwater drilling rig can be found.
  • the underwater drilling rig can be placed on a body of water.
  • a foundation hole is created using tubular elements.
  • the tubular elements can also be used to anchor the drilling device under water.
  • the outer annular space between the lateral surface of the pile tube and the surrounding hole wall is filled.
  • a hardenable medium such as mortar or a cement suspension
  • the introduction of the curable medium should, if possible, take place in such a way that the annular space is filled from below, so that liquid in the annular space, in particular water, is displaced by the curable medium from bottom to top.
  • the hose is usually inserted into the annular space manually from outside the bore. With drilling depths of 10 meters or more, the problem is that a supply hose can get caught in a central area of the drilling and therefore does not reach the bottom of the drilling hole. This is usually not detectable from outside the bore. If the curable suspension is supplied with such an incorrectly inserted supply hose, liquid can remain in the annular space below the supply hose and be enclosed by the curable suspension above it. In such a case, a pile tube would not be connected to the surrounding soil over its entire length after the suspension has hardened. This reduces the load-bearing capacity of a correspondingly formed foundation element, so that a reliable foundation is no longer guaranteed. It may be necessary to rework the foundation element, which can be very time-consuming and costly. If necessary, it may even be necessary to recreate the foundation element.
  • the invention is based on the object of specifying a method with which a foundation pile in the ground can be produced efficiently and reliably.
  • the method according to the invention is characterized in that the curable medium is introduced into the bore via the handling device.
  • a basic idea of the invention is to use the handling device not only to grip and insert the pile tube into the bore, but also to introduce the hardenable medium into the bore.
  • the handling device is not detached from the pile tube, in particular after the pile tube has been inserted into the bore, but can remain at a defined initial position on the pile tube, which was assumed outside the bore when the pile tube was gripped by the handling device. Due to the relative position specified in this way between the pile pipe and the handling device, a reliable supply of the curable medium can take place via the handling device.
  • a preferred embodiment of the invention is that the curable medium is introduced into the bore while the pile pipe is held by the handling device.
  • the handling device can grip the pile tube in a storage position, in particular in a horizontal position, and can preferably be connected to it in a non-positive manner. There is therefore a fixed relative position right from the start between the handling device and the gripped pile tube. A defined relative position between the pile tube and the handling device can be determined. In this initial position, the curable medium can then be fed to the pile pipe after the pile pipe has been inserted into the bore.
  • the curable medium is passed through the handling device to at least one feed opening on the pile pipe by means of at least one delivery line, the curable medium being passed through the pipe wall of the pile pipe via at least one line and over at least one outlet opening on the outer circumference of the pile tube exits into the annular space.
  • One or more delivery lines for supplying the hardenable medium, in particular a mortar or a cement suspension, from a depot with preferably a pump device to the pile pipe are arranged on the handling device.
  • the at least one delivery line can be permanently attached to the handling device or can only be attached subsequently after the pile tube has been gripped.
  • the curable medium is transferred via at least one feed opening on the pile tube, whereby it is directed from the feed opening via one or more lines, which can also be referred to as pile lines, to the outer circumference of the pile tube in a lower area.
  • lines which can also be referred to as pile lines
  • a single delivery line is provided on the handling device and also only a single line on the pile pipe for supplying the curable medium.
  • at least two delivery lines and/or lines are provided, which are connected by at least one Valve device can be switched in such a way that they are connected in parallel to form a double feed or are connected in series for a flushing operation. If at least two lines are provided, the curable medium can be supplied more quickly.
  • a valve device can be provided in such a way that it can interconnect the two delivery lines on the handling device and/or the two lines on the pile pipe in such a way that they are connected in series.
  • a supply of a rinsing liquid can thus take place via a first delivery line or line and a removal of a rinsing liquid via the second delivery line or second line.
  • This allows the delivery lines or lines to be flushed and thus protected from being blocked by hardened medium.
  • This allows the handling device with the delivery lines and/or the pile pipe with the lines to be used not only for one, but also for multiple feeds of curable suspension.
  • a particularly reliable filling of the annular space is achieved according to a preferred method variant of the invention in that at least one outlet opening is located in a lower region of the pile tube and the curable medium fills the annular space from bottom to top.
  • the curable medium fills the annular space from bottom to top.
  • several outlet openings can also be arranged in a lower region of the pile tube.
  • Outlet openings can also be arranged in a targeted area of the pile tube in an area above, which, if necessary, are not opened at the beginning of the filling process, preferably by means of a valve device, but are only opened at defined times in the course of the filling process.
  • an undesirable inflow of the curable medium into the interior of the pile tube can be prevented or greatly restricted by generating an overpressure at least in the pile tube in a lower section, which allows curable medium to enter from the annular space into the interior of the pile pipe.
  • the overpressure can basically be generated in any suitable way.
  • a bulkhead plate is arranged in this, which closes off the lower section from an upper section above it.
  • the resulting sealing off of the lower section means that liquid within the lower section is enclosed in it and can no longer be displaced upwards. This means that even a slight inflow of hardenable medium from below leads to an increase in pressure in the lower section, which counteracts a further inflow of hardenable medium into the pile pipe.
  • a preferred method variant is that at least one through opening on the bulkhead plate is opened in order to insert the pile pipe into a bore filled with liquid. This ensures that when the pile tube is inserted, air or liquid is not trapped in the lower section, but can flow freely upwards through the bulkhead plate when inserted. Only after reaching the end position and, in particular when the pile pipe is placed on the bottom of a borehole, is the at least one through opening on the bulkhead plate closed, so that the lower section is sealed off in a pressure-tight manner. In this state, the bulkhead plate brings about the advantageous function described above of preventing the undesired inflow of hardenable medium into the interior of the pile.
  • the at least one through opening is closed after the pile pipe has been placed on a borehole base and before the curable medium is introduced. This measure is particularly useful if the foundation pile is placed under water on the bottom of a body of water. Opening the bulkhead plate through the passage opening also enables the pile pipe to be lowered quickly into the water and into the borehole.
  • a further improvement in the production of a foundation pile results from the fact that the handling device is coupled to a hoist in order to insert the pile tube into the bore and that after the curable medium has been introduced, the hoist is detached from the handling device and the handling device as The load on the pile tube remains, at least until the medium has hardened.
  • a supporting cable or a supporting rod on a crane can be used as a lifting device.
  • the handling device is connected to the support cable or the support rod via a detachable connecting device, such as a crane hook.
  • the hoist After inserting the pile tube into the bore and introducing the hardenable medium into the annular space, the hoist can be detached from the handling device while the handling device remains on the pile tube.
  • the handling device can thus serve as an additional load for fixing the position of the pile tube, at least until the curable medium has hardened sufficiently and the pile tube is thus fixed in its position.
  • the handling device is detached from the pile pipe and recovered.
  • the hoist with the releasable connecting device can be used again on a support cable or a support rod to recover the handling device.
  • the handling device can have an energy-operated or mechanical clamping device, in particular for a non-positive connection to the pile pipe. This connection can be released again to recover the handling device.
  • a foundation pile can be created in the ground at any desired and suitable location.
  • the method can be carried out on land, with the pile pipe being inserted into a bore filled with liquid, in particular water.
  • the foundation pile is created under water in a body of water as soil.
  • the body of water can in particular be a river, a lake or a sea.
  • the method can be carried out from a bank using an appropriate device.
  • the handling device it is expedient for the handling device to be operated from a watercraft.
  • the watercraft can in particular be a ship or a pontoon.
  • the handling device is connected to at least one supply line via a detachable connecting device.
  • the supply line which is also referred to as umbilical
  • the curable medium can be supplied as well as energy supply, in particular electrical, hydraulic and/or pneumatic energy, as well as data transfer via corresponding data lines.
  • the supply line can accordingly have a bundle of different lines and/or hoses.
  • Fig. 1 is a schematic sectional view of a pile tube with a bulkhead plate
  • Fig. 2 is a schematic representation of a lower part of a pile tube in a bore
  • FIG. 3 shows a schematic detailed cross-sectional view of a feed device on the bulkhead plate of a pile pipe
  • Fig. 4 is a perspective view of a handling device for handling a pile pipe.
  • a pile tube 10 with a tubular base body 12 is provided.
  • a bulkhead plate 20 directed transversely to the longitudinal axis of the tubular base body 12, which divides the interior region 13 into a lower section 14 and an upper section 15 and separates them from each other.
  • An annular sealing element 19 can be arranged on a lower edge of the tubular base body 12, with which the pile tube 10 can be placed on a borehole base in as sealing as possible.
  • the bulkhead plate 20 has two schematically indicated through openings 22, which can be opened or closed in a targeted manner by means of a closure device 24, which is also schematically indicated.
  • a feed device 30 with two schematically indicated feed openings 32, each with an insertion funnel 34, is arranged, as will be described in more detail below in connection with FIG. 3.
  • the feed openings 32 with the insertion funnels 34 serve to supply a hardenable medium, in particular mortar or cement suspension, whereby the hardenable medium can be guided below the bulkhead 20 via lines 26 to a lower end region of the tubular base body 12.
  • the lines 26 extend through a tube wall 16 of the base body 12 and each open into an outlet opening 28 on the outer circumference 17 of the base body 12. Curable medium can thus be passed over an inner area 13 of the pile tube 10 to a lower end area and via the outlet openings 28 exit outside the pile tube 10, as will be explained in more detail below in connection with Fig. 2.
  • FIG. 2 shows schematically and not to scale a lower end region of a pile tube 10 according to the invention, which is inserted into a bore 4 in the ground 1. Only the lower area of the hole 4 is shown, whereby the hole 4 can have a depth of several meters, typically between 5m and 30m.
  • the bore 4 is filled with a liquid, in particular water or another supporting liquid, for support, so that the bore 4 does not collapse even at greater bore depths.
  • a support tube can also be provided at least in some areas.
  • the pile tube 10 with a bulkhead plate 20 can be easily inserted into a bore 4 filled with liquid in this way if the through openings 22 on the bulkhead plate 20 are opened by the closure devices 24.
  • the through openings 22 can be closed again with the closure devices 24.
  • Hardenable medium can now be introduced into the bore 4 via the lines 26, whereby this curable medium is supplied within the pile tube 10 in the lower area with the lines 26 and passes through the tube wall 16 at the lower end area and can exit into an annular space 6 via the outlet opening 28.
  • the annular space 6 is formed between an outer circumference 17 of the tubular base body 12 and a substantially cylindrical wall 8 of the bore 4.
  • the curable medium can fill the annular space 6 from bottom to top due to its higher density compared to the liquid in the bore 4. Liquid is displaced upwards from the annular space 6 by the curable medium.
  • the intended bulkhead plate 20 seals a lower section 14 of the interior area 13 of the pile tube 10 at the top with the through openings 22 closed.
  • the liquid in the lower section 14 of the pile tube 10 cannot be displaced upwards, so that no or hardly hardenable medium can penetrate into the inner region 13 of the pile tube 10.
  • the interior area 13 can be reliably kept clear and curable medium or suspension can be saved.
  • the feed device 30 of the pile pipe 10 according to FIG. 1 is shown in more detail.
  • the feed device 30 can have a cup-shaped receptacle 31, which is attached in a central region of the bulkhead plate 20.
  • the feed openings 32 for the downwardly leading lines 26 are formed in the cup-shaped receptacle 31.
  • the feed openings 32 have introduction funnels 34 at their upper area.
  • the feed openings 32 can also be designed with check valves 36, shown only schematically, which prevent undesirable backflow of the curable medium from the lines 26 in the example shown.
  • a handling device 50 can be used to supply the curable medium.
  • the handling device 50 has a base body 52 with a cover plate 54, on which an attachment element 58 for placing or arranging the handling device 50 on or on a pile tube 10 is arranged.
  • the Handling device 50 in the illustrated embodiment can be releasably attached to an inside of the pile tube 10 with at least one clamping or gripping element 57.
  • the gripping elements 57 are arranged along the circumference of the approximately tubular or barrel-shaped base body 52.
  • a pile pipe 10 can already be grabbed from a pile pipe storage on a ground surface or a watercraft.
  • the pile tube 10 can have any position when gripped, for example horizontally or vertically.
  • the handling device 50 can be connected to a lifting device, in particular a crane, via a holding element 55 at the upper end region of the base body 52. A pile tube 10 can thus be inserted from a storage position into a bore 4 in the ground 1 via the handling device 50.
  • the handling device 50 is provided with a feed device 60, which is only indicated schematically, which in the exemplary embodiment shown has delivery lines 64 which extend from an inlet device 62 at the upper end of the base body 52 to a lower outlet device 66.
  • the outlet device 66 is designed to engage via the insertion funnel 34 of the feed device 30 on a pile pipe 10 according to FIG. 3 for supplying a curable medium.
  • a corresponding coupling unit can be provided on the handling device 50 in order to ensure precise positioning and position securing in cooperation with the coupling element 23 on the feed device 30 of the pile tube 10.
  • a supply line 80 which can also be referred to as an umbilical, curable medium, energy and/or data can be supplied via a detachable connecting device 70, the curable medium being transferred to the inlet device 62 at the upper end region of the base body 52.
  • a single supply line or separate lines can be provided.
  • the connecting line 80 and/or the hoist can be detached from the holding element 55, whereby the handling device 50 can remain on the pile pipe 10 as an additional load, at least until the curable medium is used to form the Foundation element in the ground 1 has hardened.
  • the handling device 50 can then be detached from the pile pipe 10 and retrieved.

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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)

Abstract

L'invention concerne un procédé de formation d'un pieu de fondation dans le sol, le procédé consistant à : créer un trou de forage dans le sol ; saisir un tube de pieu au moyen d'un dispositif de manipulation et l'insérer dans le trou de forage ; et à introduire un milieu durcissable, qui est durci pour former le pieu de fondation, dans un espace annulaire entre une paroi du trou de forage et une périphérie externe du tube de pieu. Selon l'invention, le milieu durcissable est introduit dans le trou de forage par l'intermédiaire du dispositif de manipulation.
PCT/EP2023/069445 2022-09-16 2023-07-13 Procédé de formation d'un pieu de fondation dans le sol WO2024056237A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP22196156.8 2022-09-16
EP22196156.8A EP4339376A1 (fr) 2022-09-16 2022-09-16 Procédé de formation d'un pieu de fondation dans le sol

Publications (1)

Publication Number Publication Date
WO2024056237A1 true WO2024056237A1 (fr) 2024-03-21

Family

ID=83360952

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2023/069445 WO2024056237A1 (fr) 2022-09-16 2023-07-13 Procédé de formation d'un pieu de fondation dans le sol

Country Status (2)

Country Link
EP (1) EP4339376A1 (fr)
WO (1) WO2024056237A1 (fr)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5042614A (fr) * 1973-08-17 1975-04-17
EP0151389A1 (fr) * 1984-01-11 1985-08-14 Stump Bohr GmbH Méthode et dispositif pour la réalisation d'éléments de construction dans le sol tels que pieux, ancrages injectés, murs souterrains ou similaires
US20100296875A1 (en) 2007-10-05 2010-11-25 Aquamarine Power Limited Underwater foundation
EP2650446A1 (fr) * 2012-04-12 2013-10-16 Herrenknecht AG Procédé de fabrication d'une fondation pour une installation offshore
EP2930275A1 (fr) 2014-04-08 2015-10-14 Herrenknecht AG Système et procédé de fabrication d'une fondation pour un ouvrage situé dans l'eau
WO2021180515A1 (fr) 2020-03-11 2021-09-16 Itrec B.V. Outil de retournement et de levage

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5042614A (fr) * 1973-08-17 1975-04-17
EP0151389A1 (fr) * 1984-01-11 1985-08-14 Stump Bohr GmbH Méthode et dispositif pour la réalisation d'éléments de construction dans le sol tels que pieux, ancrages injectés, murs souterrains ou similaires
US20100296875A1 (en) 2007-10-05 2010-11-25 Aquamarine Power Limited Underwater foundation
EP2650446A1 (fr) * 2012-04-12 2013-10-16 Herrenknecht AG Procédé de fabrication d'une fondation pour une installation offshore
EP2930275A1 (fr) 2014-04-08 2015-10-14 Herrenknecht AG Système et procédé de fabrication d'une fondation pour un ouvrage situé dans l'eau
WO2021180515A1 (fr) 2020-03-11 2021-09-16 Itrec B.V. Outil de retournement et de levage

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Publication number Publication date
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