EP3517688A1 - Éléments d'ancrage à fixation dans le sol - Google Patents

Éléments d'ancrage à fixation dans le sol Download PDF

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Publication number
EP3517688A1
EP3517688A1 EP18153935.4A EP18153935A EP3517688A1 EP 3517688 A1 EP3517688 A1 EP 3517688A1 EP 18153935 A EP18153935 A EP 18153935A EP 3517688 A1 EP3517688 A1 EP 3517688A1
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EP
European Patent Office
Prior art keywords
tension member
ground anchor
flexible rod
ground
anchor element
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
EP18153935.4A
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German (de)
English (en)
Other versions
EP3517688B1 (fr
Inventor
Christian Lorenz
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
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Publication date
Application filed by Bauer Spezialtiefbau GmbH filed Critical Bauer Spezialtiefbau GmbH
Priority to EP18153935.4A priority Critical patent/EP3517688B1/fr
Publication of EP3517688A1 publication Critical patent/EP3517688A1/fr
Application granted granted Critical
Publication of EP3517688B1 publication Critical patent/EP3517688B1/fr
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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
    • 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

Definitions

  • the invention relates to a ground anchor element with an elongate tension member, which is provided for insertion into an anchor hole in the ground, and at least one spacer means, which is arranged on an outer side of the tension member and adapted to space the tension member from an environment in the anchor hole, according to the preamble of claim 1.
  • the invention relates to a method for producing a ground anchor according to claim 11.
  • a generic ground anchor goes for example from the DE 70 47 539 U or the DE 26 33 139 B2 out.
  • Such ground anchors are used in particular in civil engineering to derive pending forces as tensile forces in the ground.
  • Ground anchors are used, for example, in the back anchoring of retaining walls, for example in excavation pits.
  • a borehole is introduced into a ground, which may also comprise an approximately vertical bottom wall.
  • a curable material in particular a cement paste
  • the ground anchor by means of a distance means objected or centered to keep the environment in the anchor hole, so that a possible large-area connection to a surrounding bottom wall can be achieved. This would not be ensured if the ground anchor element bears directly against the borehole wall or another ground anchoring element used. This should be prevented by a spacer device.
  • a centering device for injection anchor is known in which a metallic Zentrierkorb is made with two spacers and arcuate metal strip. This centering can be pushed over one or more ground anchors, the outwardly bent metal strips ensure a spacing from the surrounding wall of the anchor hole.
  • a metallic Zentrierkorb is technically complex and also connected in the attachment to the ground anchor with a considerable installation effort.
  • the sleeve-shaped element is to be pushed axially onto the elongate tension member of the ground anchor element.
  • a ground anchor element of several meters, which may even be up to 15 meters and more, an axial sliding of several spacers is necessary. This can be expensive, especially under construction site conditions.
  • an inner diameter of the sleeve-shaped spacer must be matched exactly to the outer diameter of the tension member of the anchor element. In the inserted state, there is also the problem that the bulged plastic strips form again with appropriate forces and thus the function of the spacer is impaired.
  • the invention has for its object to provide a ground anchor element with a spacer device and a method for producing such an anchor element, with which a simple construction of the ground anchor element are achieved with a particularly good clearance function.
  • the object is achieved according to the invention on the one hand by a ground anchor element with the features of claim 1 and on the other hand by a method for producing a ground anchor with the features of claim 11.
  • the ground anchor element according to the invention is characterized in that the spacer device has at least one flexible rod element which is arranged like a helix around the tension member.
  • the flexible rod member can be easily wrapped around the elongated tension member.
  • the flexible rod element does not have to be tuned to a specific outer diameter of the tension member.
  • the flexible rod element can be made arbitrary in length, so that any number of wraps of the tension member can be made.
  • the bar stock can be referred to as an inexpensive mass-produced on wheels, which can be used for a variety of different ground anchor elements.
  • the flexible rod element is a tube or a hose.
  • the flexible tube or hose are preferably made of a plastic material having a desired strength to accommodate expected side or lateral forces and withstand these.
  • the flexible rod element is a corrugated tube.
  • a corrugated tube is a tube of a relatively rigid material which is provided with a wave-changing diameter over the axial length. Due to the corrugation, the tube made of the rigid material has become flexible.
  • Corrugated pipes can be made of metal or preferably of a plastic material. Corrugated pipes are a typical mass product, which is used in particular in electrical installation.
  • a further preferred embodiment of the invention consists in that the elongate tension member has at least one tension rod and / or at least one tension cord.
  • a pull rod consists of a substantially uniform rigid material, while a pull cord is flexibly composed of wires or ropes.
  • the tension member is preferably made of a metallic material, in particular mild steel.
  • the elongate tension member has a plurality of tie rods and / or Buchlitzen. It can be combined to form a tension member so a plurality of tension rods and / or Buchlitzen to accommodate particularly large forces.
  • the spacing device according to the invention can be arranged in this case preferably around the elongate tension member as a whole or around individual tension rods or tension strands.
  • the flexible rod element is arranged with at least one turn at least along an axial portion of the tension member.
  • the flexible rod element is arranged approximately helically or helically. Preferably, two, three or more turns are provided.
  • a plurality of flexible rod elements are provided, which are arranged along the tension member with an axial distance from each other.
  • longer tension members can be formed by a region-wise arrangement of a plurality of flexible rod elements along the tension member a material-saving and reliable acting spacer device.
  • the axial distances can be between 20 cm to several meters to each other.
  • the flexible rod element extends substantially along the entire length of the tension member. Due to the flexibility of the rod element while a pitch of the coil or windings can be set almost arbitrarily.
  • the rod element formed as a tube or hose has a line connection for a fluid and at least one outlet opening.
  • the hollow rod element may be provided for feeding or injecting a cement suspension.
  • the hollow rod member also for receiving Lines, be provided by measuring lines for sensor devices. In this way, a cable or fluid can be supplied from the free end of a ground anchoring element to the bottom area along the tension member.
  • the flexible rod element can be fastened to the tension member as a spacer device in any suitable manner. It is particularly advantageous according to a development of the invention that the flexible rod element with a fastening element, in particular an adhesive tape, is attached to the tension member.
  • a fastener clamping or Velcro and other fixing or tensioning straps can be provided. A particularly simple and efficient fixation can be achieved by a suitably designed adhesive tape.
  • the above-mentioned object is also achieved by a method for producing a ground anchor, in which an elongate tension member is at least partially wrapped with at least one flexible rod element, wherein a ground anchor element is formed according to the invention described above with a spacer device.
  • a ground anchor thus produced with the ground anchor element according to the invention, the above-described advantages in terms of construction and production can be achieved.
  • the spacer device can be mounted and fastened either in a pre-assembly in a factory or directly at the construction site in a simple manner.
  • the spacer device according to the invention also has the advantage that a particularly gentle transport of ground anchor elements is made possible.
  • a development of the method according to the invention is that the ground anchor element is introduced into an anchor hole in the ground and that the anchor hole is at least partially filled with a curable composition.
  • the anchor hole is created by a corresponding drill, in particular an anchor drill.
  • the ground anchoring element can be introduced directly into the anchor hole during the drilling process or after retraction of a drilling tool. Due to the spacing device along the tension member is a centering of the ground anchor element with respect to the surrounding hole wall or when using several ground anchor elements a corresponding spacing to the surrounding wall or the achieved surrounding ground anchor elements. Following this, a hardenable mass, in particular a cement suspension, be injected into the anchor hole, wherein a firm connection is made at least from areas of the ground anchor element to the ground.
  • Fig. 1 is a highly schematic an elongated Bohrankerelement 10 with a front elongated tension member 12 shown.
  • the tension member 12 may in particular be a metallic rod or a tension cord composed of wires or ropes, wherein the tension member 12 has a length of several meters.
  • a connecting portion 14 which is adapted to receive and connect to a threaded element for clamping.
  • a flexible rod element 22 is wound up as a spacer device 20 along almost the entire length of the tension member 12.
  • the winding takes place helically, with a pitch of about 20 cm can be provided up to 1.5 m. Deviations from this are possible.
  • the flexible rod member 22 is formed as a corrugated tube, which is common, for example, in electrical installation.
  • an inventive ground anchor element 10 is shown in a modified embodiment.
  • a total of four flexible rod elements 22 are arranged along the tension member 12 axially spaced from each other, which surround axial portions of the tension member 12.
  • the distance between the individual rod elements 22 to each other can be about half a meter to several meters.
  • the total of four rod elements 22 in their entirety form a spacer device 20, wherein the tension member 12 is spaced apart from the diameter of the flexible rod element 22 at least with respect to a surrounding wall of an anchor hole.
  • a further modified embodiment of an inventive ground anchor element 10 is shown.
  • the rear flexible rod member 22 may also partially wrap around the rear connecting portion 14 of the ground anchor element 10.
EP18153935.4A 2018-01-29 2018-01-29 Éléments d'ancrage à fixation dans le sol Active EP3517688B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP18153935.4A EP3517688B1 (fr) 2018-01-29 2018-01-29 Éléments d'ancrage à fixation dans le sol

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP18153935.4A EP3517688B1 (fr) 2018-01-29 2018-01-29 Éléments d'ancrage à fixation dans le sol

Publications (2)

Publication Number Publication Date
EP3517688A1 true EP3517688A1 (fr) 2019-07-31
EP3517688B1 EP3517688B1 (fr) 2020-07-08

Family

ID=61074428

Family Applications (1)

Application Number Title Priority Date Filing Date
EP18153935.4A Active EP3517688B1 (fr) 2018-01-29 2018-01-29 Éléments d'ancrage à fixation dans le sol

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EP (1) EP3517688B1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3913144A1 (fr) 2020-05-22 2021-11-24 BAUER Spezialtiefbau GmbH Procédé de production d'un tirant d'ancrage dans le sol et cylindre de réception pour un élément de câble de traction

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE7047539U (de) 1970-12-03 1970-12-23 Brueckner H Ohg Zentriervorrichtung für injektionsanker
DE1708531B1 (de) * 1968-02-29 1971-12-02 Dyckerhoff & Widmann Ag Verfahren zum Herstellen eines temporaeren Erdankers
DE2633139B2 (de) 1976-07-23 1980-08-28 Hubert 6000 Frankfurt Eichele Abstandhalter für das Stahlzugglied eines Verpreßankers und Verfahren zum Herstellen desselben
WO1993015279A1 (fr) * 1992-01-31 1993-08-05 Bhp Steel (Awi) Pty. Ltd. Boulon pour cable
US5624212A (en) * 1994-07-05 1997-04-29 Gillespie; Harvey D. Anchored cable sling system
US20120039672A1 (en) * 2010-08-10 2012-02-16 Fci Holdings Delaware, Inc. Fully grouted cable bolt

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1708531B1 (de) * 1968-02-29 1971-12-02 Dyckerhoff & Widmann Ag Verfahren zum Herstellen eines temporaeren Erdankers
DE7047539U (de) 1970-12-03 1970-12-23 Brueckner H Ohg Zentriervorrichtung für injektionsanker
DE2633139B2 (de) 1976-07-23 1980-08-28 Hubert 6000 Frankfurt Eichele Abstandhalter für das Stahlzugglied eines Verpreßankers und Verfahren zum Herstellen desselben
WO1993015279A1 (fr) * 1992-01-31 1993-08-05 Bhp Steel (Awi) Pty. Ltd. Boulon pour cable
US5624212A (en) * 1994-07-05 1997-04-29 Gillespie; Harvey D. Anchored cable sling system
US20120039672A1 (en) * 2010-08-10 2012-02-16 Fci Holdings Delaware, Inc. Fully grouted cable bolt

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3913144A1 (fr) 2020-05-22 2021-11-24 BAUER Spezialtiefbau GmbH Procédé de production d'un tirant d'ancrage dans le sol et cylindre de réception pour un élément de câble de traction
WO2021233753A1 (fr) 2020-05-22 2021-11-25 Bauer Spezialtiefbau Gmbh Procédé de création d'une ancre de tension dans le sol, et tambour de réception pour un élément de câble de tension

Also Published As

Publication number Publication date
EP3517688B1 (fr) 2020-07-08

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