EP3690187A1 - Pre-loadable ground anchor - Google Patents
Pre-loadable ground anchor Download PDFInfo
- Publication number
- EP3690187A1 EP3690187A1 EP14450046.9A EP14450046A EP3690187A1 EP 3690187 A1 EP3690187 A1 EP 3690187A1 EP 14450046 A EP14450046 A EP 14450046A EP 3690187 A1 EP3690187 A1 EP 3690187A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- anchor
- tension
- preloadable
- members
- tension members
- 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
Links
- 230000008878 coupling Effects 0.000 claims abstract description 26
- 238000010168 coupling process Methods 0.000 claims abstract description 26
- 238000005859 coupling reaction Methods 0.000 claims abstract description 26
- 239000011440 grout Substances 0.000 claims abstract description 20
- 239000000853 adhesive Substances 0.000 claims abstract description 17
- 230000001070 adhesive effect Effects 0.000 claims abstract description 17
- 239000002657 fibrous material Substances 0.000 claims abstract description 10
- 229920000914 Metallic fiber Polymers 0.000 claims abstract description 9
- 238000002347 injection Methods 0.000 claims description 7
- 239000007924 injection Substances 0.000 claims description 7
- 230000006835 compression Effects 0.000 claims description 5
- 238000007906 compression Methods 0.000 claims description 5
- 229920005989 resin Polymers 0.000 claims description 5
- 239000011347 resin Substances 0.000 claims description 5
- 239000003822 epoxy resin Substances 0.000 claims description 3
- 229920000647 polyepoxide Polymers 0.000 claims description 3
- 238000003825 pressing Methods 0.000 description 8
- 229910000831 Steel Inorganic materials 0.000 description 7
- 239000010959 steel Substances 0.000 description 7
- 239000000835 fiber Substances 0.000 description 4
- 239000002184 metal Substances 0.000 description 4
- 229910052751 metal Inorganic materials 0.000 description 4
- 238000009412 basement excavation Methods 0.000 description 3
- 239000003365 glass fiber Substances 0.000 description 3
- 239000004033 plastic Substances 0.000 description 3
- 238000004873 anchoring Methods 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000000758 substrate Substances 0.000 description 2
- 229920000049 Carbon (fiber) Polymers 0.000 description 1
- 239000004677 Nylon Substances 0.000 description 1
- 238000004026 adhesive bonding Methods 0.000 description 1
- 239000004760 aramid Substances 0.000 description 1
- 229920003235 aromatic polyamide Polymers 0.000 description 1
- 239000004917 carbon fiber Substances 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 239000004567 concrete Substances 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 229920001778 nylon Polymers 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 229920003002 synthetic resin Polymers 0.000 description 1
- 239000000057 synthetic resin Substances 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Images
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
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D20/00—Setting anchoring-bolts
- E21D20/02—Setting anchoring-bolts with provisions for grouting
- E21D20/025—Grouting with organic components, e.g. resin
-
- 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
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D21/00—Anchoring-bolts for roof, floor in galleries or longwall working, or shaft-lining protection
- E21D21/0026—Anchoring-bolts for roof, floor in galleries or longwall working, or shaft-lining protection characterised by constructional features of the bolts
- E21D21/0053—Anchoring-bolts in the form of lost drilling rods
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D21/00—Anchoring-bolts for roof, floor in galleries or longwall working, or shaft-lining protection
- E21D21/0026—Anchoring-bolts for roof, floor in galleries or longwall working, or shaft-lining protection characterised by constructional features of the bolts
- E21D21/0066—Anchoring-bolts formed by a bundle of radially arranged rigid elements
Definitions
- the invention relates to a prestressable ground anchor according to the preamble of claim 1.
- Injection anchors which are intended to transmit an applied tensile force to a layer in the subsurface.
- the grouting anchor has a grouting body arranged in the ground, which is connected to an anchor head via tension members.
- the anchor head is connected to the structure to be held or rests on it, which is thereby anchored to the substrate by means of the prestressed tension members.
- Such grout anchors can be used as temporary anchors or permanent anchors.
- the object of the invention is therefore to provide a prestressable grout anchor of the type mentioned at the beginning, with which the disadvantages mentioned can be avoided, which is easy to handle and can be prestressed using conventional means.
- the coupling device with which the tension members are glued can be used to create a simple and easy-to-manufacture transition to a conventional tension tension member, wherein the compression anchor can be pre-tensioned with the conventional methods and equipment by means of the tension tension member.
- anchor tension members By using a non-metallic fiber material as anchor tension members, they can easily remain in the subsoil even after the excavation pit has been dismantled, since they can be easily severed. Furthermore, a compact design can be achieved, as a result of which the diameter of the borehole can be kept small.
- the adhesive connection By means of the adhesive connection, a particularly simple but also durable coupling of the anchor tension members to the coupling device can be effected, wherein damage to the anchor tension members can be avoided, which would be the case, for example, with a purely mechanical connection such as clamps.
- the 1 to 3 show a preferred embodiment of a prestressable grout anchor 1 comprising a plurality of anchor tension members 2.
- a grout anchor 1 is also referred to as a prestressed anchor or as a ground or rock anchor.
- the grout anchor 1 is a component of geotechnical engineering, which transmits an applied tensile force into the ground 10.
- a borehole 11 is drilled into the subsurface 10
- the anchor tension members 2 are introduced into the borehole 11, and then the anchor tension members 2 are anchored in the borehole 11 by means of a compression body 12.
- the pressing body 12 can be made of cement, concrete or the like.
- the anchor tension members 2 comprise a non-metallic fiber material.
- a non-metallic fiber material can in particular be glass fiber cables. Glass fiber cables offer the advantage that they have high tensile strength, are chemically resistant and are easy to manufacture.
- carbon fibers, plastic fibers, for example made of aramid or nylon, natural fibers, ceramic fibers or similar material can also be used for the anchor tension members 2.
- the anchor tension members 2 can in particular comprise a composite material comprising non-metallic fiber material.
- the coupling device 4 connects the anchor tension members 2 with a tension tension member 5, the tension tension member 5 proceeding to be tensioned with a tensioning device 9.
- the tension member 5 can in this case be made in particular of metal, in particular of steel. Furthermore, it can be provided that the tension member 5 is designed as a steel tension member.
- the adhesive connection of the anchor tension members 2 to the coupling device 4 enables a reliable connection to be made with the non-metallic fibrous material, without damaging it .
- anchor tension members 2 are essentially glued to their lateral surfaces. As a result, the gluing point is subjected to thrust and not to tension, which means that it can absorb particularly high forces.
- another end 13 of the anchor pull members that is to say an end 13 of the anchor pull members 2 opposite the end 6 glued to the coupling device 4, may be in direct contact with the pressing body 12.
- the grout anchor 1 can in particular be designed as a short-term anchor or as a temporary grout anchor. Such anchoring anchors 1 are intended to be used for only a few years. Through the use of the non-metallic fiber material, the anchor tension members 2 can remain in the subsurface 10, whereby the dismantling effort can be significantly reduced.
- the grout anchor 1 is designed as a permanent anchor.
- Such anchoring anchors 1 are provided for a long period of use, for example at least one hundred years.
- the anchor tension members 2 comprising non-metallic fiber material can be more corrosion-resistant than anchor tension members 2 made of metal.
- the pressing body 12 can be arranged essentially only adjacent to the other end 13 of the anchor tension members 2.
- the pressing body 12 essentially fills the entire borehole 11.
- Fig. 1 A preferred embodiment of the prestressable grouting anchor 1 is shown, the grouting body 12 not being shown.
- the complete grout anchor 1 is shown, which is arranged in the borehole 11. It can particularly preferably be provided that a free-running path 14 is arranged between one end 6 and the other end 13 of the anchor tension members 2.
- the anchor tension members 2 can be arranged in a sleeve 15, in particular in a plastic sleeve, in the longitudinal direction of which they can move freely.
- the sheath 15 can encase individual anchor tension members 2 or an entire strand of anchor tension members 2.
- the anchor tension members 2 can transmit the tensile forces from the coupling device 4 unhindered to the pressing body 12, wherein the anchor tension members 2 can also expand unhindered under the pretension in the freewheel section 14. Through the sheath 15, the anchor tension members 2 are not in contact with the pressing body 12 in the free-running section 14.
- the anchor tension members 2 have a length of between 3 m and 20 m.
- anchor tension members 2 are of essentially the same length.
- anchor tension members 2 run parallel to one another.
- the anchor tension members 2 are at least four times as long as the tension tension member 5. In this case, the anchor tension members 2 can be left in the base 10, while in the case of a short-term anchor, only the shorter tension tension member 5 has to be removed.
- the adhesive 3 is a resin, preferably a synthetic resin, in particular an epoxy resin.
- Resins have the advantage of being easy to implement by casting.
- Epoxy resin is also water-resistant.
- one end 6 of the anchor tension members 2 in the Adhesive 3 is embedded.
- a particularly large-area adhesive surface can be achieved here. Furthermore, the penetration of corrosion-causing fluids into the coupling device 4 and the areas below it can be prevented.
- the coupling device 4 has a sleeve 7 and that one end 6 of the anchor tension members 2 is arranged inside the sleeve 7.
- a good integration of the ends 6 of the anchor tension members 2 can be achieved by the sleeve 7, whereby a defined area can be provided by the sleeve 7, which can be poured out by the adhesive 3.
- the sleeve 7 can in particular be made of metal and / or plastic. Furthermore, the sleeve 7 can in particular have a hollow cylindrical shape.
- the coupling device 4 has a length of less than 2 m. As a result, this can be easily removed from the base 10 in the case of a short-term anchor.
- the length of the sleeve 7 can essentially correspond to the length of the coupling device 4.
- the anchor tension members 2 extend substantially over the entire length of the sleeve 7 in the sleeve 7.
- the anchor tension members 2 can be arranged in the sleeve over the entire length of the sleeve 7. This enables a particularly large adhesive surface to be provided.
- the grout anchor 1 has only one tension member 5.
- the one tension member 5 can be designed as a strand, rod or rope.
- the grout anchor 1 has a plurality of tension members. It can in particular be provided that the number of anchor tension members 2 is greater than the number of tension tension members 5. It can particularly preferably be provided that a first area 8 of the tension member 5 is arranged inside the sleeve 7. Here, the first area 8 of the tension member 5 and the one ends 6 of the anchor members 2 in the sleeve 7 can be arranged overlapping, whereby a particularly good transfer of force by the adhesive 3 is possible.
- a second region 16 of the tension member 5 of the tension member can be provided, which can be tensioned with a tensioning device 9.
- the clamping device 9 is provided for applying and holding the clamping force.
- the tension member 5 has a thread for engaging a tensioning device 9.
- the tensioning device 9 can in particular have an internal thread, wherein the tensioning force can be adjusted by rotating the tensioning device 9 and the prestressable compression anchor 1 can be easily re-tensioned.
- the tension member 5 is designed as a threaded rod.
- the clamping device 9 is provided as a perforated plate with wedges.
- the tension member 5 can be tensioned by means of an external device and then fixed in the perforated plate with the wedges in the pre-tensioned situation.
- the anchor tension members 2 are arranged substantially uniformly distributed around the first area 8 of the tension tension member 5. This allows a particularly uniform power transmission of the many anchor tension members 2 to the tension member. Furthermore, the coupling device 4 can thereby be particularly simple and space-saving. Such an arrangement is in Fig. 2 shown, wherein the individual strands of the anchor tension members 2 are arranged in a circular arrangement around the central tension member 5. The tension member can in particular be arranged coaxially to the sleeve 4.
- the prestressable injection anchor 1 has at least three anchor tension members 2, in particular five to twenty anchor tension members 2.
- the introduction of force can be transmitted particularly uniformly via the individual anchor tension members 2 to a centrally arranged tension tension member 5.
- a diameter of the tensioning tension member 5 is larger than a diameter of the anchor tensioning members 2.
- the anchor tension members 2 can be better arranged around the tension member 5, whereby a uniform power transmission is improved.
- the tension member 5 is glued directly to the coupling device 4 with the adhesive 3.
- the use of additional connecting means can be dispensed with, as a result of which the coupling of the tension member 5 to the coupling device 4 can be particularly simple. It can be provided here that the tension member 5 is essentially glued to its outer surface.
- the tension member 5 and the anchor members 2 are embedded together in an adhesive formed as a resin.
- Such a connection is in Fig. 2 shown, the tension member 5 and the ring-shaped anchor tie members 2 are embedded in the resin.
- the coupling device 4 has a connecting device and that the tension member 5 is connected to the connecting device.
- the connecting device can be designed in particular for the releasable connection of the tension member 5.
- the connecting device can be designed as a threaded sleeve, into which the tension member 5 is screwed.
- the connecting device can be attached to the sleeve 7. The connecting device has the advantage that the tension member 5 can be easily detached from the coupling device 4, as a result of which the removal of the grout anchor 1 can be made particularly simple.
- an injection tube passes through the sleeve 7.
- the injection pipe is used to bring the material for the pressing body 12 to the floor to direct the borehole 11.
- the injection tube can be guided between the tensioning member 5 and the anchor members 2 through the sleeve 7 and embedded there. This enables a particularly compact design to be achieved.
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- Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Piles And Underground Anchors (AREA)
Abstract
Bei einem vorspannbarer Verpressanker (1) umfassend eine Mehrzahl an Ankerzugglieder (2), wobei die Ankerzugglieder (2) ein nichtmetallisches Fasermaterial umfassen, wird vorgeschlagen, dass die Ankerzugglieder (2) an einem Ende (6) mittels eines Klebstoffes (3) mit einer Koppelungsvorrichtung (4) verklebt sind, und dass ein Spannzugglied (5) zum Spannen des vorspannbaren Verpressankers (1) zumindest mittelbar mit der Koppelungsvorrichtung (4) verbunden ist.In the case of a pre-stressable grout anchor (1) comprising a plurality of anchor tension members (2), the anchor tension members (2) comprising a non-metallic fiber material, it is proposed that the anchor tension members (2) at one end (6) with an adhesive (3) Coupling device (4) are glued, and that a tensioning tension member (5) for tensioning the prestressable grout anchor (1) is at least indirectly connected to the coupling device (4).
Description
Die Erfindung betrifft einen vorspannbaren Verpressanker gemäß dem Oberbegriff des Patentanspruches 1.The invention relates to a prestressable ground anchor according to the preamble of claim 1.
Es sind Verpressanker bekannt, welche dazu vorgesehen sind eine aufgebrachte Zugkraft auf eine Schicht im Untergrund zu übertragen. Hierbei weist der Verpressanker einen im Untergrund angeordneten Verpresskörper auf, welcher über Zugglieder mit einem Ankerkopf verbunden sind. Der Ankerkopf ist hierbei mit der zu haltenden Konstruktion verbunden oder liegt an dieser auf, welche dadurch mittels den vorgespannten Zugglieder mit dem Untergrund verankert ist. Derartige Verpressanker können hierbei als temporärer Anker oder als Daueranker eingesetzt werden.Injection anchors are known which are intended to transmit an applied tensile force to a layer in the subsurface. Here, the grouting anchor has a grouting body arranged in the ground, which is connected to an anchor head via tension members. The anchor head is connected to the structure to be held or rests on it, which is thereby anchored to the substrate by means of the prestressed tension members. Such grout anchors can be used as temporary anchors or permanent anchors.
Für die Zugglieder wird bei herkömmlichen Verpressanker üblicherweise Stahl verwendet. Hierbei ergibt sich allerdings der Nachteil, dass aus ein Zugglied aus Stahl bei einem temporären Anker, welcher beispielsweise zur Sicherung einer Baugrube eingesetzt wird, nicht im Erdreich verbleiben darf. Dies ist insbesondere im urbanen Gebiet von Bedeutung, da hier die Zugglieder oft in Nachbargrundstücke ragen. Ein Zugglied aus Stahl stellt hierbei beim Ausheben einer anderen Grube oder dem Vorantreiben eines Kanals oder eines Tunnels ein wesentliches Hindernis dar, da es für herkömmliche Baumaschinen nur schwer zu durchtrennen ist.Steel is usually used for the tension members in conventional grout anchors. However, this has the disadvantage that a tension member made of steel must not remain in the ground in the case of a temporary anchor, which is used, for example, to secure an excavation pit. This is particularly important in the urban area, since here the tension members often protrude into neighboring properties. A steel tension member is a major obstacle when digging another pit or driving a canal or tunnel, as it is difficult to cut through for conventional construction machines.
Eine mögliche Lösung dieses Problems besteht in der Verwendung von Glasfaserkabeln als Zugglieder, da diese leichter zu durchtrennen sind als Zugglieder aus Stahl oder anderen Metallen, weshalb diese ohne Probleme im Untergrund verbleiben dürfen.One possible solution to this problem is to use fiber optic cables as tension members, since these are easier to cut than tension members made of steel or other metals, which is why they can remain in the ground without problems.
Nachteilig bei bekannten Verpressankern mit Glasfaserkabeln als Zugglieder ist allerdings, dass diese wesentlich aufwendiger in der Handhabe sind und aufwendige Konstruktionen zum Vorspannen benötigen.A disadvantage of known grout anchors with glass fiber cables as tension members is, however, that they are much more complex to handle and require complex constructions for pretensioning.
Aufgabe der Erfindung ist es daher einen vorspannbaren Verpressanker der eingangs genannten Art anzugeben, mit welchem die genannten Nachteile vermieden werden können, welcher einfach in der Handhabe ist und mit herkömmlichen Mitteln vorgespannt werden kann.The object of the invention is therefore to provide a prestressable grout anchor of the type mentioned at the beginning, with which the disadvantages mentioned can be avoided, which is easy to handle and can be prestressed using conventional means.
Erfindungsgemäß wird dies durch die Merkmale des Patentanspruches 1 erreicht.According to the invention this is achieved by the features of claim 1.
Dadurch ergibt sich der Vorteil, dass ein vorspannbarer Verspressanker mit Zuggliedern aus einem nichtmetallischen Fasermaterial mit herkömmlichen Mitteln gespannt werden kann. Durch die Koppelungsvorrichtung, mit welcher die Zugglieder verklebt sind, kann ein einfacher und leicht herzustellender Übergang auf ein herkömmlichen Spannzugglied geschaffen werden, wobei mittels dem Spannzuggliedes der Verpressanker mit den herkömmlichen Methoden und Gerätschaften vorgespannt werden kann. Dadurch ergibt sich für den Benützer, dass dieser bei der Verwendung des gegenständlichen Verspressankers die gleichen Geräte zum Verspannen verwenden kann wie bei herkömmlichen Verpressanker mit Stahlzugglieder. Dadurch kann beispielsweise der Geräteeinsatz bei einer Baugrube gering gehalten werden, wobei auf zugelassene und bewährte Methoden und Geräte zum Vorspannen zurückgegriffen werden kann. Durch die Verwendung eines nichtmetallischen Fasermaterials als Ankerzugglieder können diese selbst nach Abbau der Baugrube problemlos im Untergrund verbleiben, da diese leicht durchtrennbar sind. Weiters kann dadurch eine kompakte Bauform erreicht werden, wodurch der Durchmesser des Bohrloches gering gehalten werden kann. Durch die Klebeverbindung kann hierbei eine besonders einfach ausgebildete aber auch haltbare Koppelung der Ankerzugglieder mit der Koppelungsvorrichtung bewirkt werden, wobei eine Beschädigung der Ankerzugglieder vermieden werden kann, welche beispielsweise bei einer rein mechanischen Verbindung wie Klemmen gegeben wäre.This has the advantage that a prestressable grouting anchor with tension members made of a non-metallic fiber material can be tensioned using conventional means. The coupling device with which the tension members are glued can be used to create a simple and easy-to-manufacture transition to a conventional tension tension member, wherein the compression anchor can be pre-tensioned with the conventional methods and equipment by means of the tension tension member. This means that the user can use the same devices for bracing when using the grouting anchor as in the case of conventional grouting anchors with steel tension members. In this way, for example, the use of equipment in an excavation pit can be kept to a minimum, whereby approved and proven methods and devices for prestressing can be used. By using a non-metallic fiber material as anchor tension members, they can easily remain in the subsoil even after the excavation pit has been dismantled, since they can be easily severed. Furthermore, a compact design can be achieved, as a result of which the diameter of the borehole can be kept small. By means of the adhesive connection, a particularly simple but also durable coupling of the anchor tension members to the coupling device can be effected, wherein damage to the anchor tension members can be avoided, which would be the case, for example, with a purely mechanical connection such as clamps.
Die Unteransprüche betreffen weitere vorteilhafte Ausgestaltungen der Erfindung.The subclaims relate to further advantageous refinements of the invention.
Ausdrücklich wird hiermit auf den Wortlaut der Patentansprüche Bezug genommen, wodurch die Ansprüche an dieser Stelle durch Bezugnahme in die Beschreibung eingefügt sind und als wörtlich wiedergegeben gelten.Reference is hereby expressly made to the wording of the patent claims, as a result of which the claims are inserted at this point by reference into the description and are considered to be reproduced verbatim.
Die Erfindung wird unter Bezugnahme auf die beigeschlossenen Zeichnungen, in welchen lediglich eine bevorzugte Ausführungsform beispielhaft dargestellt ist, näher beschrieben. Dabei zeigt:
-
Fig. 1 einen Teil einer bevorzugten Ausführungsform des vorspannbaren Verpressankers als Schnitt in Seitenansicht; -
Fig. 2 den Schnitt A-A inFig. 1 ; -
Fig. 3 die bevorzugte Ausführungsform des vorspannbaren Verpressankers als Schnitt in Seitenansicht.
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Fig. 1 part of a preferred embodiment of the pretensionable Injection anchor as a section in side view; -
Fig. 2 the section AA inFig. 1 ; -
Fig. 3 the preferred embodiment of the prestressable grout anchor as a section in side view.
Die
Die Ankerzugglieder 2 umfassen ein nichtmetallisches Fasermaterial. Ein derartiges nichtmetallisches Fasermaterial können insbesondere Glasfaserkabeln sein. Glasfaserkabel bieten hierbei den Vorteil, dass diese eine hohe Zugfestigkeit aufweisen, chemisch beständig und einfach in der Herstellung sind. Alternativ können auch Kohlefasern, Kunststofffasern, beispielsweise aus Aramid oder Nylon, Naturfasern, keramische Fasern oder ähnliches Material für die Ankerzugglieder 2 verwendet werden. Weiters können die Ankerzugglieder 2 insbesondere ein Verbundmaterial umfassend nichtmetallisches Fasermaterial umfassen.The anchor tension members 2 comprise a non-metallic fiber material. Such a non-metallic fiber material can in particular be glass fiber cables. Glass fiber cables offer the advantage that they have high tensile strength, are chemically resistant and are easy to manufacture. Alternatively, carbon fibers, plastic fibers, for example made of aramid or nylon, natural fibers, ceramic fibers or similar material can also be used for the anchor tension members 2. Furthermore, the anchor tension members 2 can in particular comprise a composite material comprising non-metallic fiber material.
Vorgesehen ist, dass die Ankerzugglieder 2 an einem Ende 6 mittels eines Klebstoffes 3 mit einer Koppelungsvorrichtung 4 verklebt sind, und dass ein Spannzugglied 5 zum Spannen des vorspannbaren Verpressankers 1 zumindest mittelbar mit der Koppelungsvorrichtung 4 verbunden ist. Die Koppelungsvorrichtung 4 verbindet die Ankerzugglieder 2 mit einem Spannzugglied 5, wobei das Spannzugglied 5 vorgehen ist mit einer Spannvorrichtung 9 gespannt zu werden. Das Spannzugglied 5 kann hierbei insbesondere aus Metall, insbesondere aus Stahl, ausgebildet sein. Weiters kann vorgesehen sein, dass das Spannzugglied 5 als Stahlzugglied ausgebildet ist. Dadurch können die Zugkräfte des Spannzuggliedes 5, welches mit herkömmlichen Mitteln gespannt werden kann, einfach und zuverlässig an die Ankerzugglieder 2 weitergeleitet werden, und durch die Ankerzugglieder 2 über den Verpresskörper 12 an den Untergrund 10. Durch die Klebeverbindung der Ankerzugglieder 2 mit der Koppelungsvorrichtung 4 kann eine zuverlässige Verbindung mit dem nichtmetallischen Faserstoff hergestellt werden, wobei dieser nicht beschädigt wird.Provision is made for the anchor tension members 2 to be glued to an
Besonders bevorzugt kann vorgesehen sein, dass die Ankerzugglieder 2 im Wesentlichen an deren Mantelflächen verklebt sind. Dadurch wird die Klebestelle auf Schub und nicht auf Zug beansprucht, wodurch diese besonders hohe Kräfte aufnehmen kann.It can particularly preferably be provided that the anchor tension members 2 are essentially glued to their lateral surfaces. As a result, the gluing point is subjected to thrust and not to tension, which means that it can absorb particularly high forces.
Insbesondere kann ein anderes Ende 13 der Ankerzugglieder 2, also ein, dem mit der Koppelungsvorrichtung 4 verklebten Ende 6 gegenüberliegendes, Ende 13 der Ankerzugglieder 2, mit dem Verpresskörper 12 in direktem Kontakt sein.In particular, another end 13 of the anchor pull members 2, that is to say an end 13 of the anchor pull members 2 opposite the end 6 glued to the
Der Verpressanker 1 kann insbesondere als Kurzzeitanker oder als temporärer Verpressanker ausgebildet sein. Derartige Verpressanker 1 sind für eine Benützungsdauer von lediglich wenigen Jahren vorgesehen. Durch die Verwendung des nichtmetallischen Fasermaterials können die Ankerzugglieder 2 im Untergrund 10 verbleiben, wodurch der Abbauaufwand wesentlich reduziert werden kann.The grout anchor 1 can in particular be designed as a short-term anchor or as a temporary grout anchor. Such anchoring anchors 1 are intended to be used for only a few years. Through the use of the non-metallic fiber material, the anchor tension members 2 can remain in the
Alternativ kann vorgesehen sein, dass der Verpressanker 1 als Daueranker ausgebildet ist. Derartige Verpressanker 1 sind für eine lange Benützungsdauer vorgesehen, beispielsweise mindestens hundert Jahre. Hierbei können die Ankerzugglieder 2 umfassend nichtmetallisches Fasermaterial korrosionsbeständiger als Ankerzugglieder 2 aus Metall sein.Alternatively, it can be provided that the grout anchor 1 is designed as a permanent anchor. Such anchoring anchors 1 are provided for a long period of use, for example at least one hundred years. Here, the anchor tension members 2 comprising non-metallic fiber material can be more corrosion-resistant than anchor tension members 2 made of metal.
Insbesondere kann der Verpresskörper 12 im Wesentlichen lediglich benachbart zu dem anderen Ende 13 der Ankerzugglieder 2 angeordnet sein.In particular, the
Alternativ kann vorgesehen sein, dass der Verpresskörper 12 im Wesentlichen das gesamte Bohrloch 11 ausfüllt.Alternatively, it can be provided that the
In
Insbesondere kann vorgesehen sein, dass die Ankerzugglieder 2 eine Länge zwischen 3 m und 20 m aufweisen.In particular, it can be provided that the anchor tension members 2 have a length of between 3 m and 20 m.
Weiters kann vorgesehen sein, dass die Ankerzugglieder 2 im Wesentlichen gleich lang sind.Furthermore, it can be provided that the anchor tension members 2 are of essentially the same length.
Bevorzugt kann vorgesehen sein, dass eine Länge der Freilaufstrecke 14 größer ist als die Bereiche welche das eine Ende 6 und das andere Ende 13 der Ankerzugglieder 2 darstellen.Provision can preferably be made for a length of the
Besonders bevorzugt kann vorgesehen sein, dass die Ankerzugglieder 2 parallel zueinander verlaufen.It can particularly preferably be provided that the anchor tension members 2 run parallel to one another.
Weiters kann vorgesehen sein, dass die Ankerzugglieder 2 mindestens vier mal so lange sind wie das Spannzugglied 5. Hierbei können die Ankerzugglieder 2 im Untergrund 10 belassen werden, während bei einem Kurzzeitanker lediglich das kürzere Spannzugglied 5 zu entfernen ist.Furthermore, it can be provided that the anchor tension members 2 are at least four times as long as the tension tension member 5. In this case, the anchor tension members 2 can be left in the
Besonders bevorzugt kann vorgesehen sein, dass der Klebstoff 3 ein Harz, bevorzugt ein Kunstharz, insbesondere ein Epoxidharz, ist. Harze haben hierbei den Vorteil der einfachen Implizierbarkeit mittels Gießen. Weiters ist Epoxidharz wasserbeständig.It can particularly preferably be provided that the adhesive 3 is a resin, preferably a synthetic resin, in particular an epoxy resin. Resins have the advantage of being easy to implement by casting. Epoxy resin is also water-resistant.
Weiters kann vorgesehen sein, dass das eine Ende 6 der Ankerzugglieder 2 in dem Klebstoff 3 eingebettet ist. Hierbei kann eine besonders großflächige Klebefläche erreicht werden. Weiters kann dadurch das Eindringen von korrosionsverursachenden Fluide in die Koppelungsvorrichtung 4 und die darunter liegenden Bereiche unterbunden werden.It can further be provided that one end 6 of the anchor tension members 2 in the
Besonders bevorzugt kann vorgesehen sein, dass die Koppelungsvorrichtung 4 eine Hülse 7 aufweist, und dass das eine Ende 6 der Ankerzugglieder 2 innerhalb der Hülse 7 angeordnet ist. Die Hülse 7, welche in
Weiters kann bevorzugt vorgesehen sein, dass die Koppelungsvorrichtung 4 eine Länge von weniger als 2 m aufweist. Dadurch kann diese bei einem Kurzzeitanker leicht wieder aus dem Untergrund 10 entfernt werden.Furthermore, it can preferably be provided that the
Die Länge der Hülse 7 kann im Wesentlichen der Länge der Koppelungsvorrichtung 4 entsprechen.The length of the
Insbesondere kann vorgesehen sein, dass die Ankerzugglieder 2 sich im Wesentlichen über die gesamte Länge der Hülse 7 in der Hülse 7 erstrecken. Mit anderen Worten können die Ankerzugglieder 2 über die gesamte Länge der Hülse 7 in der Hülse angeordnet sein. Dadurch kann eine besonders große Klebefläche bereitgestellt werden.In particular, it can be provided that the anchor tension members 2 extend substantially over the entire length of the
Insbesondere kann vorgesehen sein, dass der Verpressanker 1 lediglich ein Spannzugglied 5 aufweist. Das eine Spannzugglied 5 kann hierbei als Strang, Stange oder Seil ausgebildet sein.In particular, it can be provided that the grout anchor 1 has only one tension member 5. The one tension member 5 can be designed as a strand, rod or rope.
Alternativ kann vorgesehen sein, dass der Verpressanker 1 mehrere Spannzugglieder aufweist. Hierbei kann insbesondere vorgesehen sein, dass die Anzahl der Ankerzugglieder 2 größer ist als die Anzahl der Spannzugglieder 5. Besonders bevorzugt kann vorgesehen sein, dass ein erster Bereich 8 des Spannzuggliedes 5 innerhalb der Hülse 7 angeordnet ist. Hierbei können der erste Bereich 8 des Spannzuggliedes 5 und die einen Enden 6 der Ankerzugglieder 2 in der Hülse 7 überlappend angeordnet sein, wodurch eine besonders gute Kraftüberleitung durch den Klebstoff 3 möglich ist.Alternatively, it can be provided that the grout anchor 1 has a plurality of tension members. It can in particular be provided that the number of anchor tension members 2 is greater than the number of tension tension members 5. It can particularly preferably be provided that a first area 8 of the tension member 5 is arranged inside the
Weiters kann ein zweiter Bereich 16 des Spannzuggliedes 5 des Spannzuggliedes vorgesehen sein, welcher mit einer Spannvorrichtung 9 verspannbar ist. Die Spannvorrichtung 9 ist hierbei zum Aufbringen und Halten der Spannkraft vorgesehen.Furthermore, a second region 16 of the tension member 5 of the tension member can be provided, which can be tensioned with a
Besonders bevorzugt kann vorgesehen sein, dass das Spannzugglied 5 ein Gewinde zum Eingriff einer Spannvorrichtung 9 aufweist. Die Spannvorrichtung 9 kann hierbei insbesondere ein Innengewinde aufweisen, wobei durch ein Drehen der Spannvorrichtung 9 die Spannkraft eingestellt werden kann und der vorspannbare Verpressanker 1 leicht nachgespannt werden kann. Insbesondere kann vorgesehen sein, dass das Spannzugglied 5 als Gewindestange ausgebildet ist.It can be particularly preferred that the tension member 5 has a thread for engaging a
Alternativ kann vorgesehen sein, dass die Spannvorrichtung 9 als Lochplatte mit Keilen vorgesehen ist. Hierbei kann das Spannzugglied 5 mittels eines externen Gerätes gespannt und anschließend in der Lochplatte mit den Keilen in der vorgespannten Situation fixiert werden.Alternatively, it can be provided that the
Besonders bevorzugt kann vorgesehen sein, dass die Ankerzugglieder 2 im Wesentlichen gleichmäßig verteilt um den ersten Bereich 8 des Spannzuggliedes 5 angeordnet sind. Dadurch kann eine besonders gleichmäßige Kraftübertragung der vielen Ankerzugglieder 2 an das Spannzugglied erfolgen. Weiters kann dadurch die Koppelungsvorrichtung 4 besonders einfach und platzsparrend ausgebildet sein. Eine derartige Anordnung ist in
Weiters kann vorgesehen sein, dass der vorspannbare Verpressanker 1 mindesten drei Ankerzugglieder 2, insbesondere fünf bis zwanzig Ankerzugglieder 2, aufweist. Hierbei kann die Krafteinleitung besonders gleichmäßig über die einzelnen Ankerzugglieder 2 an ein zentral angeordnetes Spannzugglied 5 weitergeleitet werden.Furthermore, it can be provided that the prestressable injection anchor 1 has at least three anchor tension members 2, in particular five to twenty anchor tension members 2. In this case, the introduction of force can be transmitted particularly uniformly via the individual anchor tension members 2 to a centrally arranged tension tension member 5.
Insbesondere kann vorgesehen sein, dass ein Durchmesser des Spannzuggliedes 5 größer als ein Durchmesser der Ankerzugglieder 2 ist. Hierbei können die Ankerzugglieder 2 besser umlaufend um das Spannzugglied 5 angeordnet werden, wodurch eine gleichmäßige Kraftübertragung verbessert wird.In particular, it can be provided that a diameter of the tensioning tension member 5 is larger than a diameter of the anchor tensioning members 2. Here, the anchor tension members 2 can be better arranged around the tension member 5, whereby a uniform power transmission is improved.
Weiters kann bevorzugt vorgesehen sein, dass das Spannzugglied 5 unmittelbar mit dem Klebstoff 3 mit der Koppelungsvorrichtung 4 verklebt ist. Hierbei kann auf die Verwendung zusätzlicher Verbindungsmitteln verzichtet werden, wodurch die Ankopplung des Spannzugglied 5 mit der Koppelungsvorrichtung 4 besonders einfach ausgebildet sein kann. Hierbei kann vorgesehen sein, dass das Spannzugglied 5 im Wesentlichen an seiner Mantelfläche verklebt ist.Furthermore, it can preferably be provided that the tension member 5 is glued directly to the
Insbesondere kann vorgesehen sein, dass das Spannzugglied 5 und die Ankerzugglieder 2 in einem als Harz ausgebildeten Klebstoff gemeinsam eingebettet sind. Eine derartige Verbindung ist in
Alternativ kann vorgesehen sein, dass die Koppelungsvorrichtung 4 eine Verbindungseinrichtung aufweist, und dass das Spannzugglied 5 mit der Verbindungseinrichtung verbunden ist. Die Verbindungseinrichtung kann insbesondere zum lösbaren Verbinden des Spannzugglied 5 ausgebildet sein. Beispielsweise kann die Verbindungseinrichtung als Gewindemuffe ausgebildet sein, in welche das Spannzugglied 5 eingeschraubt ist. Weiters kann die Verbindungseinrichtung an der Hülse 7 befestigt sein. Durch die Verbindungseinrichtung ergibt sich der Vorteil, dass das Spannzugglied 5 leicht von der Koppelungsvorrichtung 4 gelöst werden kann, wodurch der Abbau des Verpressankers 1 besonders einfach gestaltet werden kann.Alternatively, it can be provided that the
Weiters kann vorgesehen sein, dass ein Injektionsrohr durch die Hülse 7 durchführt. Das Injektionsrohr dient dazu, das Material für den Verpresskörper 12 an den Boden des Bohrloches 11 zu leiten. Zur Platzersparnis kann dass Injektionsrohr zwischen das Spannzugglied 5 und die Ankerglieder 2 durch die Hülse 7 geführt, und dort eingebettet werden. Dadurch kann eine besonders kompakte Bauform erreicht werden.It can further be provided that an injection tube passes through the
Claims (13)
Priority Applications (1)
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PL14450046T PL3690187T3 (en) | 2013-10-18 | 2014-10-15 | Pre-loadable ground anchor |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
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ATA806/2013A AT514992B1 (en) | 2013-10-18 | 2013-10-18 | Prestressing anchor |
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EP3690187A1 true EP3690187A1 (en) | 2020-08-05 |
EP3690187B1 EP3690187B1 (en) | 2021-07-28 |
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EP14450046.9A Active EP3690187B1 (en) | 2013-10-18 | 2014-10-15 | Pre-loadable ground anchor |
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EP (1) | EP3690187B1 (en) |
AT (1) | AT514992B1 (en) |
PL (1) | PL3690187T3 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN114197463A (en) * | 2021-11-26 | 2022-03-18 | 北京市市政四建设工程有限责任公司 | GFRP (glass fiber reinforced plastic) rib and steel strand composite anchor rod structure and using method thereof |
CN114622554A (en) * | 2022-01-18 | 2022-06-14 | 吉林大学 | Pressure dispersion type anchor rope bearing structure |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE202017102490U1 (en) | 2017-04-27 | 2017-05-17 | FiReP International AG | Anchor arrangement in the ground as well as ground anchors |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0533336A (en) * | 1991-08-02 | 1993-02-09 | Zenitakagumi:Kk | Permanent ground anchor made of new material |
JPH0742380U (en) * | 1993-12-28 | 1995-08-04 | 東京製綱株式会社 | Anchor body for grand anchor |
JPH11193526A (en) * | 1997-12-26 | 1999-07-21 | Tokyo Seiko Co Ltd | Tension and anchorage method for fiber composite linear material |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
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CN203035213U (en) * | 2012-11-16 | 2013-07-03 | 山东科技大学 | Expansion type anchor rod |
-
2013
- 2013-10-18 AT ATA806/2013A patent/AT514992B1/en active
-
2014
- 2014-10-15 EP EP14450046.9A patent/EP3690187B1/en active Active
- 2014-10-15 PL PL14450046T patent/PL3690187T3/en unknown
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0533336A (en) * | 1991-08-02 | 1993-02-09 | Zenitakagumi:Kk | Permanent ground anchor made of new material |
JPH0742380U (en) * | 1993-12-28 | 1995-08-04 | 東京製綱株式会社 | Anchor body for grand anchor |
JPH11193526A (en) * | 1997-12-26 | 1999-07-21 | Tokyo Seiko Co Ltd | Tension and anchorage method for fiber composite linear material |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN114197463A (en) * | 2021-11-26 | 2022-03-18 | 北京市市政四建设工程有限责任公司 | GFRP (glass fiber reinforced plastic) rib and steel strand composite anchor rod structure and using method thereof |
CN114622554A (en) * | 2022-01-18 | 2022-06-14 | 吉林大学 | Pressure dispersion type anchor rope bearing structure |
Also Published As
Publication number | Publication date |
---|---|
AT514992A1 (en) | 2015-05-15 |
AT514992B1 (en) | 2015-07-15 |
EP3690187B1 (en) | 2021-07-28 |
PL3690187T3 (en) | 2022-03-07 |
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