EP3628781A1 - 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
EP3628781A1
EP3628781A1 EP18196794.4A EP18196794A EP3628781A1 EP 3628781 A1 EP3628781 A1 EP 3628781A1 EP 18196794 A EP18196794 A EP 18196794A EP 3628781 A1 EP3628781 A1 EP 3628781A1
Authority
EP
European Patent Office
Prior art keywords
injection
post
medium
anchor
anchor foot
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.)
Granted
Application number
EP18196794.4A
Other languages
German (de)
English (en)
Other versions
EP3628781B1 (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
Anticipated expiration legal-status Critical

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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, wherein a hole is made in the ground, a hardening compound is injected at least in a partial region of the hole to form an anchor foot by means of an injection member, and after a partial, not yet complete hardening of the compound In a region of the anchor foot, a post-injection medium is introduced under pressure via a post-injection member, by means of which the anchor foot, which has not yet fully hardened, is broken open, according to the preamble of claim 1.
  • the invention further relates to an automatic repressing machine for such a method according to claim 9.
  • an injection anchor also called anchoring anchor
  • anchoring anchor with an enlarged anchor base.
  • a hole is made in the floor into which a tension member for the anchor is inserted.
  • An anchor foot is formed in the ground in an anchoring area of the tension member by injecting hardening building material.
  • an injection pipe which is introduced into the bore together with the tension member, further hardening building material is pressed into the anchoring area under high pressure before the anchor foot is completely hardened by the injection pipe.
  • the primary anchor foot created and partially hardened in the first step is broken up and can thus be expanded, in particular in the radial direction, to form a secondary anchor foot, by means of which a stronger anchoring of the tension member can be achieved.
  • the anchor foot is usually produced on construction sites on a first day, while the subsequent pressing is then carried out by tearing open the anchor foot on the following day.
  • grout anchors are usually manufactured on a construction site from Monday to Thursday during a working week, with the grouting being carried out on the following day.
  • injection anchors with primary anchor feet are no longer created on a Friday, since it is not or hardly possible to carry out the re-grouting until the following Monday, due to the advanced hardening of the anchor foot could no longer be reliably broken open by a re-injection medium.
  • the invention is based on the object of specifying a method for producing an injection anchor in the ground and a device therefor, in which there is increased time flexibility in the manufacture of injection anchors.
  • the object is achieved on the one hand by a method with the features of claim 1 and on the other hand with a post-injection machine with the features of claim 9.
  • Preferred embodiments of the invention are specified in the respective dependent claims.
  • the method according to the invention is characterized in that a post-injection machine is connected to the post-injection member, through which the post-injection medium is automatically introduced into the post-injection member at a freely definable point in time for breaking up the not yet fully hardened anchor foot.
  • a basic idea of the invention is that an anchor foot can be repressed without personnel by a special automatic repressing machine.
  • the post-injection machine is pipeline-connected to the post-injection member, and the post-injection medium can be automatically introduced into the post-injection member to break open the primary anchor foot, which has not yet hardened. Any time can be entered in the post-injection machine at which the post-injection medium is then introduced into the post-injection member.
  • the time for repressing can also be switched from a remote control center via a preferably wireless data connection or depending on sensors which determine, for example, a state of the primary anchor foot, such as strength or residual moisture etc., the environment or other relevant parameters.
  • a tension member for the anchor is introduced into or after the hole has been drilled into it, it being necessary to ensure that the tension member is reliably connected to the anchor foot formed.
  • a preferred embodiment of the invention consists in the fact that the post-injection medium is a liquid, in particular water, or a gas, in particular compressed air, through which the anchor foot is broken open and that a hardenable medium is introduced into the broken anchor foot at intervals.
  • the primary anchor foot is first broken open by a non-hardening medium, in particular water or compressed air, at the specified point in time. This first step can be carried out by the post-injection machine, 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 repressing by introducing a hardening medium into the broken primary anchor foot can either also be carried out by the repressing machine, which then has an additional memory and, if appropriate, an additional printing device for generating the pressure for the hardenable medium.
  • the second step of repressing cannot be carried out automatically by personnel at a later point in time. After the primary anchor foot has been broken open, the broken anchor foot parts can harden themselves until the hardening medium is introduced.
  • a hardenable medium is used as the secondary injection medium, in particular the hardening mass for forming the anchor foot.
  • the post-grouting is therefore carried out in a single step, the post-grouting medium in particular being a cement suspension or another curable suspension.
  • the invention encompasses all of these basic method variants for producing an injection anchor, but with the step of automatic repressing.
  • the injection member for injecting the curable composition and a separate post-injection member for injecting the post-injection medium remain in the bore.
  • the injection member and the secondary injection member can advantageously 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 for forming the secondary anchor foot.
  • the injection member can be a separate element which is introduced into the bore with or after the removal of the drilling tool.
  • the injection member is designed as a drilling tool with which the hole is made in the ground.
  • the injection member can simultaneously or alternatively be part of the tension member, so that an overall simple workflow is achieved.
  • a particularly expedient variant of the method also consists in the fact that the post-injection member has at least one outlet opening through which the post-injection medium is introduced into the bore.
  • the hose-like or tube-like post-compression member can have a section in the region of the anchor foot to be formed with a plurality of openings or with a reduced material thickness, which tears open in a defined manner when the post-compression medium is introduced.
  • the post-injection medium can escape into the surrounding area and break open the primary anchor foot or introduce a hardenable medium to form the secondary anchor foot.
  • a suitable pressure is set.
  • the post-injection machine is provided with a control in which a time for executing the automatic post-injection is entered.
  • the controller can in particular have a timer, with which in particular a time span or a defined point in time for carrying out the automatic repressing can be entered.
  • the mechanical or preferably electronic control system can then be used to start the automatic repressing device in order to introduce the repressing medium in the desired manner.
  • the controller can additionally be provided with an input device for entering the necessary pressure, the filling quantity to be introduced and / or a limit pressure at which the repressing process can be stopped.
  • the device according to the invention is designed as a post-injection machine, which is characterized in that a pressure device is provided, which is line-connectable to the post-injection member and which is designed to introduce the post-injection medium under pressure into the post-injection member, and in that a controller is provided, in which a Time for automatic introduction of the post-injection medium is formed in the post-injection member.
  • a preferred embodiment consists in that 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 compressed air is stored in one container and the curable medium is stored in another container.
  • the pressure device can be any suitable device for generating a pressure, such as a pressure storage container with compressed gas or a compression spring unit. According to one embodiment of the invention, it is particularly preferred that the pressure device has a pump and / or a compressor. In this way, the pressure required to introduce the secondary injection medium can be applied.
  • the components of the post-injection machine are preferably operated electrically.
  • the post-injection machine can be provided with batteries for energy supply or have a connection to an external power source. In principle, other energy sources for operating the automatic repressing machine are also possible.
  • a single post-injection machine can be provided for each post-injection member.
  • the post-injection machine can be made very compact overall.
  • An alternative and preferred embodiment of the invention can be seen in that the post-injection machine has several Lines are connected to several post-injection elements.
  • a central post-injection machine can supply several post-injection members with the post-injection medium.
  • the control can be designed so that this takes place simultaneously for all or several post-injection members or that the post-injection operations are carried out successively on the individual post-injection members.
  • the single figure shows the execution of a preferred embodiment variant of the method according to the invention in five steps.
  • a bore 5 is made in a floor or an approximately vertical wall area by means of a drilling tool 20.
  • a hardenable mass 12 can be introduced into the bore 5 via a drill tip 21 in order to form a primary anchor foot 16, as is clearly 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. After reaching the desired depth, the outer drilling tool 20 can be withdrawn again from the bore 5, the free space in the bore 5 being filled at least in regions with the hardenable mass 12, as is clearly illustrated in steps c) and d). In this method, the drilling tool 20 also serves as an injection member 22 for injecting the hardenable mass 12 for forming the primary anchor foot 16 and, if appropriate, for forming a further region of the injection anchor 10.
  • a tubular post-compression 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, flowable state.
  • a post-compression section 34 is arranged at least in sections, which covers press-out openings 36 in the tubular base body 32.
  • an automatic post-injection device 40 is connected to the free end of the post-injection member 30 protruding from the floor via a connection 38 and a line 49.
  • 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 post-injection medium 26 can be automatically introduced from the container 48 by means of the pressure device 50 under pressure into the post-injection member 30 by means of the post-injection machine 40.
  • the secondary injection medium 26 which can in particular be identical to the hardenable mass 12, it can be introduced into the bore 5 at a predeterminable point in time at which the primary anchor foot 16 is partially but not yet fully hardened.
  • the one or more secondary injection sections 34 on the secondary injection member 30 can be torn open, so that the outlet openings 36 in the base body 32 of the secondary injection member 30 are released.
  • the flowable secondary injection medium 26 can penetrate into the area of the primary anchor foot 16, break it open and expand it into an enlarged, approximately pear-shaped secondary anchor foot 18. After complete curing, a diameter-widened secondary anchor foot 18 is thus achieved, in which the tension member 14 is firmly integrated, so that relatively high forces can be dissipated into the ground via the tension member 14 and the expanded secondary anchor foot 18.
  • the tension member 14 can be surrounded by a cylindrical tube element 15.
  • the automatic repressing device 40 can be removed again by disconnecting the line 49 at the connection 38 and can be provided for a further repressing process.

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

Family

ID=63787722

Family Applications (1)

Application Number Title Priority Date Filing Date
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)

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

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2050292A1 (de) 1970-10-13 1972-06-29 Bauer, Dipl Ing , Dr Ing , Karlheinz, 8898 Schrobenhausen Verfahren zum Herstellen von Erd ankern mit erweitertem Ankerfuß
EP0218987A2 (fr) * 1985-10-03 1987-04-22 Dyckerhoff & Widmann Aktiengesellschaft Méthode pour la mise en place d'un élément de construction au travers d'un rideau de palplanches dans une formation du sol comportant de l'eau sous pression ainsi qu'un dispositif pour la mise en oeuvre de la méthode
DE102009029892A1 (de) * 2008-11-01 2011-09-15 Reinhard Klöckner Vorrichtung zur Einleitung von Zugkräften in den Untergrund beispielsweise für Abspannseile von Fangnetzen für die Steinschlag- und Lawinensicherung sowie Verfahren zur Herstellung und Dimensionierung dieser Vorrichtung

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2949705A (en) * 1953-06-05 1960-08-23 Carl F Spickelmier Reinforced concrete slab construction
US3222873A (en) * 1961-07-31 1965-12-14 Chester I Williams Groutable rock anchor
US3336758A (en) * 1965-01-11 1967-08-22 Chester I Williams Rock bolt assembly and procedure for two-stage grouting operations
DE2101236A1 (de) * 1971-01-12 1972-08-17 Bauer, Karlheinz, Dipl.-Ing. Dr.-Ing., 8898 Schrobenhausen Korrosionsgeschützter Zuganker zur Verankerung von Bauteilen im Erdreich sowie Verfahren zur Herstellung von Zugverankerungen mit korrosionsgeschützten Zugankern
JPS61196070A (ja) * 1985-02-27 1986-08-30 大成建設株式会社 構造物の止水方法
KR100775645B1 (ko) * 2004-08-26 2007-11-13 손정찬 그라우트 주입을 위한 자동제어장치, 주입시스템 및 그제어방법
US20070286687A1 (en) * 2006-06-12 2007-12-13 Cesare Melegari Method and equipment for constructing micropiles in soil
JP2014051798A (ja) * 2012-09-06 2014-03-20 Splice Sleeve Japan Ltd 鉄筋の継手工法
WO2018045277A1 (fr) * 2016-09-02 2018-03-08 J-Lok Co. Système à résine pompable
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

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2050292A1 (de) 1970-10-13 1972-06-29 Bauer, Dipl Ing , Dr Ing , Karlheinz, 8898 Schrobenhausen Verfahren zum Herstellen von Erd ankern mit erweitertem Ankerfuß
EP0218987A2 (fr) * 1985-10-03 1987-04-22 Dyckerhoff & Widmann Aktiengesellschaft Méthode pour la mise en place d'un élément de construction au travers d'un rideau de palplanches dans une formation du sol comportant de l'eau sous pression ainsi qu'un dispositif pour la mise en oeuvre de la méthode
DE102009029892A1 (de) * 2008-11-01 2011-09-15 Reinhard Klöckner Vorrichtung zur Einleitung von Zugkräften in den Untergrund beispielsweise für Abspannseile von Fangnetzen für die Steinschlag- und Lawinensicherung sowie Verfahren zur Herstellung und Dimensionierung dieser Vorrichtung

Also Published As

Publication number Publication date
US20220049448A1 (en) 2022-02-17
US11993910B2 (en) 2024-05-28
EP3628781B1 (fr) 2023-06-07
WO2020064208A1 (fr) 2020-04-02

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