EP3628781B1 - Procédé de fabrication d'une injection d'ancrage et automate de compression correspondant - Google Patents

Procédé de fabrication d'une injection d'ancrage et automate de compression correspondant Download PDF

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Publication number
EP3628781B1
EP3628781B1 EP18196794.4A EP18196794A EP3628781B1 EP 3628781 B1 EP3628781 B1 EP 3628781B1 EP 18196794 A EP18196794 A EP 18196794A EP 3628781 B1 EP3628781 B1 EP 3628781B1
Authority
EP
European Patent Office
Prior art keywords
post
grouting
medium
injection
automatic
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.)
Active
Application number
EP18196794.4A
Other languages
German (de)
English (en)
Other versions
EP3628781A1 (fr
Inventor
Christian Lorenz
Daniel Brokemper
Sebastian Romer
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.)
Bauer Spezialtiefbau GmbH
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
Priority to EP18196794.4A priority Critical patent/EP3628781B1/fr
Priority to PCT/EP2019/071721 priority patent/WO2020064208A1/fr
Priority to US17/275,807 priority patent/US11993910B2/en
Publication of EP3628781A1 publication Critical patent/EP3628781A1/fr
Application granted granted Critical
Publication of EP3628781B1 publication Critical patent/EP3628781B1/fr
Active 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
    • E02D5/74—Means for anchoring structural elements or bulkheads
    • E02D5/80—Ground anchors
    • E02D5/808—Ground anchors anchored by using exclusively a bonding material
    • 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
    • E02D5/74—Means for anchoring structural elements or bulkheads
    • 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
    • E02D5/74—Means for anchoring structural elements or bulkheads
    • E02D5/76—Anchorings for bulkheads or sections thereof in as much as specially adapted therefor
    • 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
    • E02D5/74—Means for anchoring structural elements or bulkheads
    • E02D5/80—Ground anchors
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D2250/00—Production methods
    • E02D2250/003—Injection of material

Definitions

  • the invention relates to a method for producing an injection anchor in the ground, in which a hole is drilled in the ground, a hardening mass is injected at least in a partial area of the hole by means of an injection member to form an anchor base and after the mass has partially hardened but has not yet fully hardened a post-press medium is introduced into an area of the anchor foot via a post-injection member under pressure, through which the not yet fully hardened anchor foot is broken up, according to the preamble of claim 1.
  • the invention further relates to a post-pressing machine for such a method according to claim 9.
  • the U.S. 2018 066519 A1 discloses a post-pressing machine according to the preamble of claim 9.
  • the EP 0 218 987 A2 discloses a method and a device for setting or pressing tie rods into sheet piling to restore forces occurring underground in the ground.
  • the invention is based on the object of specifying a method for producing an injection anchor in the ground and a device for this, in which there is increased temporal flexibility in the production of injection anchors.
  • the object is achieved on the one hand by a method having the features of claim 1 and on the other hand with an automatic post-pressing machine having the features of claim 9 .
  • Preferred embodiments of the invention are given in the respective dependent claims.
  • the method according to the invention is characterized in that a post-pressing machine is connected to the post-pressing member, by means of which the post-pressing medium is automatically fed into the post-pressing member at a freely definable point in time to break up the not yet fully hardened anchor foot.
  • a basic idea of the invention lies in the fact that a post-injection of an anchor base can be carried out without personnel using a special post-injection machine.
  • the post-pressing machine is connected to the post-pressing member by a line, and the post-pressing medium can be automatically introduced into the post-pressing member to break up the primary anchor base that has not yet hardened. Any time at which the post-pressing medium is introduced into the post-pressing member can be entered into the post-pressing machine.
  • the point in time for post-pressing can also be switched from a remote control center via a preferably wireless data connection or depending on sensors which determine the condition of the primary anchor base, such as strength or residual moisture, etc., the environment or other relevant parameters.
  • post-injection can be carried out independently of the presence of personnel and thus also on weekends, public holidays, mornings or nights.
  • the use of a post-injection machine can now basically be used on construction sites for the production of injection anchors. This leads to improved utilization of the machine park, to an increase in the weekly output for injection anchors to be produced and to a reduction in the construction time. As a result, this leads to considerable cost advantages.
  • a preferred embodiment of the invention consists in that the post-injection medium is a liquid, in particular water, or a gas, in particular compressed air, through which the anchor base is broken open and that a hardenable medium is introduced into the broken anchor base at different times.
  • the post-injection medium is a liquid, in particular water, or a gas, in particular compressed air, through which the anchor base is broken open and that a hardenable medium is introduced into the broken anchor base at different times.
  • the primary anchor foot is first broken up at the specified point in time by a non-hardening medium, in particular water or compressed air.
  • a non-hardening medium in particular water or compressed air.
  • This first step can be carried out by the post-pressing machine, with the storage of water or compressed air, which is formed in particular from the ambient air, being possible without any problems.
  • the second step of post-injection by introducing a hardening medium into the fractured primary anchor foot can either also be carried out by the post-pressing machine, which then has an additional reservoir and optionally an additional pressure device for generating the pressure for the hardenable medium.
  • the second post-pressing step cannot be performed automatically by personnel at a later point in time. After breaking open the primary anchor foot, the broken anchor foot parts can self-harden until the hardening medium is introduced.
  • a hardenable medium is used as the post-injection medium, in particular the hardening mass for forming the anchor foot.
  • the post-injection is carried out in a single step, in which case the post-injection medium can in particular be a cement suspension or another hardenable suspension.
  • the invention includes all of these basic method variants for producing an injection anchor, but with the step of automatic post-injection.
  • the injection member for injecting the hardenable mass and a separate post-injection member for injecting the post-injection medium remain in the bore.
  • the injection member and the post-injection member can be introduced into the bore together with the tension member.
  • the injection member could also be used as a post-injection member for the post-injection medium and/or another hardenable medium to form the secondary anchor base.
  • the injection member can be a separate element which is introduced into the borehole with or after the drilling tool has been removed.
  • the injection member is designed as a drilling tool with which the borehole is created in the ground.
  • the injection member can simultaneously or alternatively be part of the traction member, so that an overall simple workflow is achieved.
  • the post-injection member has at least one outlet opening through which the post-injection medium is introduced into the bore.
  • the tube-like or tube-like post-grouting member can have a section with a plurality of openings or with a reduced material thickness, which tears open in a defined manner when the post-pressing medium is introduced at a predetermined pressure.
  • the post-injection medium can escape into the surrounding area and break up the primary anchor foot or introduce a hardenable medium to form the secondary anchor foot.
  • a suitable pressure is set.
  • a pressure of at least 10 bar, preferably between 15 bar and 40 bar is set for introducing the post-injection medium. In special cases, lower or higher pressures can also be provided.
  • the automatic post-pressing machine is provided with a controller in which a time for carrying out the automatic post-pressing is entered.
  • the controller can in particular have a timer, with which in particular a period of time or a defined point in time for carrying out the automatic post-pressing can be entered.
  • the post-pressing machine for introducing the post-pressing medium can then be put into operation in the desired manner via the mechanical or preferably electronic control.
  • control additionally includes an input device for inputting the necessary pressure, the filling quantity to be introduced and/or a limit pressure at which the post-injection process can be stopped.
  • the device according to the invention is designed as a post-pressing machine, which is characterized in that a pressure device is provided, which can be connected by line to the post-pressing member and which is designed to introduce the post-pressing medium under pressure into the post-pressing member, and that a controller is provided in which a Time for the automatic introduction of the Nachverpressmedium is formed in the Nachverpressglied.
  • At least one container is provided for receiving the post-injection medium.
  • the container can also be a pressure container in which the medium, in particular compressed air, is stored under pressure.
  • several, in particular two, containers can also be provided, so that, for example, compressed air is stored in one container and the curable medium is stored in another container.
  • the pressurizing means may be any suitable means for generating pressure, such as a compressed gas accumulator or a compression spring assembly.
  • the pressure device has a pump and/or a compressor. In this way, the necessary pressure for introducing the post-injection medium can be applied.
  • the components of the post-pressing machine are preferably operated electrically.
  • the post-pressing machine can be provided with batteries for power supply or have a connection to an external power source. In principle, other energy sources are also possible for operating the post-pressing machine.
  • a single post-pressing machine can be provided for each individual post-pressing member.
  • the post-pressing machine can be made very compact overall.
  • An alternative and preferred embodiment of the invention can be seen in the fact that the Nachverpressautomat over several Lines are connected to several post-pressing members.
  • a central post-pressing machine can supply several post-pressing members with the post-pressing medium.
  • the control can be designed in such a way that this takes place simultaneously for all or several post-pressing members or that the post-pressing processes are carried out successively on the individual post-pressing members.
  • a drilling tool 20 is used to drill a hole 5 in a floor or an approximately vertical wall area.
  • a hardenable mass 12 can be introduced into the bore 5 via a drill bit 21 in order to form a primary anchor base 16, as illustrated in steps b) and c).
  • the rod-shaped tension member 14 for forming the injection anchor 10 and the rod-shaped injection member 22 can be arranged within the drilling tool 20 so that they can already be introduced into the bore 5 with the drilling tool 20 .
  • the outer drilling tool 20 can be withdrawn from the borehole 5 again, with the free space in the borehole 5 being at least partially filled with the hardenable compound 12, as clearly illustrated in steps c) and d).
  • the drilling tool 20 serves at the same time as an injection member 22 for injecting the hardenable mass 12 to form the primary anchor base 16 and, if necessary, for forming a further area of the injection anchor 10.
  • a tubular post-pressing member 30 with a hollow base body 32 is introduced into the bore 5 with the tension member 14 as long as the hardenable mass 12 is still in a soft, free-flowing state.
  • a post-pressing section 34 is arranged at least in sections on the bottom end area of the base body 32 of the post-pressing member 30 , which post-pressing section covers ejection openings 36 in the tubular base body 32 .
  • a post-pressing machine 40 is connected via a connection 38 and a line 49 to the free end of the post-pressing member 30 protruding from the ground.
  • the post-injection machine 40 has a box-like frame 42 with a controller 44, at least one container 48 for receiving a post-injection medium 26 and a pressure device 50 for generating a desired injection pressure.
  • the controller 44 is provided with a timer 46 with which a point in time can be entered at which the post-pressing machine 40 can automatically introduce post-press medium 26 from the container 48 by means of the pressure device 50 into the post-press member 30 .
  • the post-pressing medium 26 which can in particular be identical to the hardenable compound 12, it can be introduced into the bore 5 at a predeterminable point in time at which the primary anchor base 16 has partially but not yet fully hardened.
  • the one or more post-pressing sections 34 on the post-pressing member 30 can be torn open, so that the outlet openings 36 in the base body 32 of the post-pressing member 30 are released.
  • the flowable post-injection medium 26 can penetrate into the area of the primary anchor foot 16 , break it up and widen it to form an enlarged, approximately pear-shaped secondary anchor foot 18 .
  • a secondary anchor foot 18 with an enlarged diameter is achieved, in which the tension member 14 is firmly integrated, so that relatively high forces can be discharged into the ground via the tension member 14 and the enlarged secondary anchor foot 18 .
  • the tension member 14 can be surrounded by a cylindrical tubular element 15 .
  • the post-pressing machine 40 can be removed again by disconnecting the line 49 at the connection 38 and provided for a further post-pressing process.

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)
  • Piles And Underground Anchors (AREA)

Claims (12)

  1. Procédé de réalisation d'un ancrage à injection (10) dans le sol, dans lequel
    - un perçage (5) est établi dans le sol,
    - au moyen d'un organe d'injection (22) une masse durcissante (12) est injectée au moins dans une zone partielle du perçage (5) pour la formation d'un pied d'ancrage (16) et
    - après un durcissement partiel, encore non complet de la masse (12), par le biais d'un organe de post-compression (30) sous pression, un milieu de post-compression (26) est introduit dans une zone du pied d'ancrage (16), par lequel le pied d'ancrage (16) qui n'est pas encore complètement durci est rompu,
    caractérisé en ce que
    à l'élément de post-compression (30) est raccordé un automate de post-compression (40), par lequel à un moment librement prédéfinissable, le milieu de post-compression (26) est automatiquement introduit pour la rupture du pied d'ancrage (16) qui n'est pas encore durci dans l'élément de post-compression (30).
  2. Procédé selon la revendication 1,
    caractérisé en ce que
    le milieu de post-compression (26) est un liquide, en particulier de l'eau, ou un gaz, en particulier de l'air comprimé, par lequel le pied d'ancrage (16) est rompu, et
    en ce qu'un milieu durcissable est introduit à distance temporelle dans le pied d'ancrage (16) rompu.
  3. Procédé selon la revendication 1,
    caractérisé en ce que
    comme milieu de post-compression (26), un milieu durcissable est utilisé, en particulier la masse durcissante (12) pour la formation du pied d'ancrage (16).
  4. Procédé selon l'une des revendications 1 à 3,
    caractérisé en ce que
    l'organe d'injection (22) pour l'injection de la masse durcissable (12) et de l'élément de post-compression (30) pour l'injection du milieu de post-compression (26) reste dans le perçage (5).
  5. Procédé selon l'une des revendications 1 à 4,
    caractérisé en ce que
    l'organe d'injection (22) est réalisé comme un outil de forage (20), avec lequel le perçage (5) est établi dans le sol.
  6. Procédé selon l'une des revendications 1 à 5,
    caractérisé en ce que
    l'organe de post-compression (30) présente au moins une ouverture de sortie, par laquelle le milieu de post-compression (26) est introduit dans le perçage (5).
  7. Procédé selon l'une des revendications 1 à 6,
    caractérisé en ce que
    une pression pour l'introduction du milieu de post-compression (26) d'au moins 10 bars, de préférence entre 15 bars et 40 bars, est réglée.
  8. Procédé selon l'une des revendications 1 à 7,
    caractérisé en ce que
    l'automate de post-compression (40) est pourvu d'une commande (44), dans laquelle un temps de réalisation de la post-compression automatique est saisi.
  9. Automate de post-compression pour un procédé selon l'une des revendications 1 à 8,
    dans lequel un dispositif de pression (50) est prévu, lequel est reliable par conduite à l'organe de post-compression (30) et lequel est réalisé pour l'introduction du milieu de post-compression (26) sous pression dans l'organe de post-compression (30), et
    dans lequel une commande (44) est prévue, dans laquelle un moment d'introduction automatique du milieu de post-compression (26) est réalisé dans l'élément de post-compression (30),
    caractérisé en ce que
    l'automate de post-compression est un automate de post-compression (40) à deux étages et
    en ce que la commande (44) comporte un dispositif de saisie pour la saisie de la pression nécessaire, de la quantité de remplissage à introduire et/ou d'une pression limite, à laquelle le processus de post-compression peut être arrêté.
  10. Automate de post-compression selon la revendication 9,
    caractérisé en ce que
    au moins un récipient (48) est prévu pour la réception du milieu de post-compression (26), en particulier un récipient pour un milieu non-durcissable et un récipient pour un milieu durcissable.
  11. Automate de post-compression selon la revendication 9 ou 10,
    caractérisé en ce que
    le dispositif de pression (50) présente une pompe et/ou un compresseur.
  12. Automate de post-compression selon l'une des revendications 9 à 11,
    caractérisé en ce que
    celui-ci est raccordé par le biais de plusieurs conduites (49) à plusieurs organes de post-compression (30).
EP18196794.4A 2018-09-26 2018-09-26 Procédé de fabrication d'une injection d'ancrage et automate de compression correspondant Active EP3628781B1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
EP18196794.4A EP3628781B1 (fr) 2018-09-26 2018-09-26 Procédé de fabrication d'une injection d'ancrage et automate de compression correspondant
PCT/EP2019/071721 WO2020064208A1 (fr) 2018-09-26 2019-08-13 Procédé pour fabriquer un tirant d'ancrage injecté dans le sol et dispositif de post-compression automatique pour celui-ci
US17/275,807 US11993910B2 (en) 2018-09-26 2019-08-13 Method for producing an injection anchor in the ground and automatic post-grouting machine for the same

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP18196794.4A EP3628781B1 (fr) 2018-09-26 2018-09-26 Procédé de fabrication d'une injection d'ancrage et automate de compression correspondant

Publications (2)

Publication Number Publication Date
EP3628781A1 EP3628781A1 (fr) 2020-04-01
EP3628781B1 true EP3628781B1 (fr) 2023-06-07

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EP18196794.4A Active EP3628781B1 (fr) 2018-09-26 2018-09-26 Procédé de fabrication d'une injection d'ancrage et automate de compression correspondant

Country Status (3)

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US (1) US11993910B2 (fr)
EP (1) EP3628781B1 (fr)
WO (1) WO2020064208A1 (fr)

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US20180066519A1 (en) * 2016-09-02 2018-03-08 J-Lok Co. Pumpable Resin System

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KR100775645B1 (ko) * 2004-08-26 2007-11-13 손정찬 그라우트 주입을 위한 자동제어장치, 주입시스템 및 그제어방법
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US20180066519A1 (en) * 2016-09-02 2018-03-08 J-Lok Co. Pumpable Resin System
CN107447756A (zh) * 2017-09-25 2017-12-08 西南石油大学 一种补偿锚索预应力损失的施工装置及补偿施工方法

Also Published As

Publication number Publication date
EP3628781A1 (fr) 2020-04-01
WO2020064208A1 (fr) 2020-04-02
US20220049448A1 (en) 2022-02-17
US11993910B2 (en) 2024-05-28

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