EP2085521B1 - Soil or rock anchor with an anchor pull made of one or more individual elements with corrosion protected anchor head design - Google Patents

Soil or rock anchor with an anchor pull made of one or more individual elements with corrosion protected anchor head design Download PDF

Info

Publication number
EP2085521B1
EP2085521B1 EP09000397.1A EP09000397A EP2085521B1 EP 2085521 B1 EP2085521 B1 EP 2085521B1 EP 09000397 A EP09000397 A EP 09000397A EP 2085521 B1 EP2085521 B1 EP 2085521B1
Authority
EP
European Patent Office
Prior art keywords
anchor
cap
closure means
anchoring
anchor according
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.)
Not-in-force
Application number
EP09000397.1A
Other languages
German (de)
French (fr)
Other versions
EP2085521A1 (en
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.)
Dywidag Systems International GmbH
Original Assignee
Dywidag Systems International 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 Dywidag Systems International GmbH filed Critical Dywidag Systems International GmbH
Publication of EP2085521A1 publication Critical patent/EP2085521A1/en
Application granted granted Critical
Publication of EP2085521B1 publication Critical patent/EP2085521B1/en
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

Links

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
    • E21D21/00—Anchoring-bolts for roof, floor in galleries or longwall working, or shaft-lining protection
    • E21D21/008—Anchoring or tensioning means
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
    • E02D5/22—Piles
    • E02D5/54—Piles with prefabricated supports or anchoring parts; Anchoring piles
    • 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
    • E02D5/805—Ground anchors with deformable anchoring members
    • 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
    • E21D21/0086—Bearing plates
    • 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
    • E21D21/0093—Accessories

Definitions

  • the invention relates to a Erd- or rock anchor with an Ankerzugglied of one or more individual elements and with a corrosion-protected anchor head training according to the preamble of claim 1.
  • Anchors are always used when it comes to initiate forces in the anchor head in deeper layers of soil.
  • generic anchor on an Ankerzugglied which may be formed for example by a single rod anchor, which has a continuous external thread as a rule.
  • Such anchors are known as rock bolts or pegs, which are brought either over their entire length by introducing an injection mortar in conjunction with the borehole wall and then braced or anchored as so-called free-play anchors only in the area of the borehole bottom and biased at the air-side end.
  • the tightening or pretensioning takes place by means of an anchor nut, which is screwed onto the thread of the bar anchor and is supported against an anchor plate.
  • Soil and rock anchors are used both for temporary and permanent use, the permanent use requires a design suitable for protection against corrosion constructive training.
  • a corrosion protection by coating the exposed parts with a corrosion protection compound, such as grease, achieved.
  • a cap enclosing the anchoring disc and the protruding ends of the steel wire strands is provided, which is filled with a corrosion protection compound and fastened to the anchor plate via an edge flange by means of screws.
  • the invention has the object to improve the structural design of the anchor head, in particular with a view to facilitate the assembly and disassembly.
  • the basic idea of the invention is to arrange the closure means for fastening the cap to the rest of the anchor head in an externally inaccessible area, for example in the protected area inside the cap.
  • This is done according to the invention by means of a connection element which concentrically surrounds the individual elements and is connected to a support element.
  • the connection element provides on its outer circumference first closure means, which cooperate with second closure means on the inner circumference of the cap.
  • the closure means are not impaired by subsequent external measures such as a protective coating or mechanical damage in their function.
  • the corrosion protection within the cap also ensures that the closure means are also protected against corrosion, so that their function is permanently maintained and also a release of the cap after many years is still possible without difficulty.
  • closure means are activated in the course of placing the cap, which can be done very quickly and therefore compared to the attachment by means of screws means a significant reduction in the workload.
  • an anchor according to the invention is characterized by an improved external appearance and entices third parties who are denied the view of the closure means, less to an abusive removal of the cap.
  • a constructive cap training can contribute, which requires the use of special tools for releasing the cap.
  • a recess or a projection with a polygonal cross-section can be arranged centrally on the cover of the screw cap, for example in the form of a regular four- or hexagonal cross-section into or onto which a correspondingly shaped tool engages.
  • the circumference of the screw cap may comprise means that can be brought into frictional engagement with a tool, for example, flat or profiled surfaces, which are suitable for applying a tool.
  • the connecting element consists of an attachable to the individual elements annular disc which is clamped between the anchor nut and anchor plate and occurs with its outer periphery in interaction with the closure means on the inner circumference of the cap.
  • the anchor plate serves as a support element.
  • connection element is formed by a one-piece from the anchor plate cylindrical projection, which brings advantages especially in the assembly of the anchor, since no own parts must be kept and handled.
  • the closure means for fastening the cap to the rest of the anchor head training preferably consist of a thread, in particular a coarse thread. This makes it possible to attach the cap quickly and safely on the anchor head.
  • the cap closes over its entire circumference frictionally and sealingly against the anchor plate.
  • connection element is arranged with the closure means on or on a dome plate.
  • the dome plate serves as a support element.
  • the invention therefore has a very broad field of application.
  • a further embodiment of the invention shows that it is also possible to arrange the closure means on the outer circumference of the cap.
  • the connecting element is formed by a circumferential collar which protrudes monolithically from the upper side of the annular disc, dome plate, anchor plate or anchoring disc and extend on the inner circumference of the complementary closure means.
  • FIG. 1 to 3 show a first embodiment of the invention, wherein the Fig. 1 and 3 also mutatis mutandis for the embodiments of the in the Fig. 4 to 8 Anchor head training shown apply, as far as the structural design allows.
  • rock anchor 1 which is arranged within a borehole 2.
  • the Ankerzugglied the rock anchor 1 consists of a single element in the form of a ribbed steel bar 3, the longitudinal axis of which carries the reference numeral 4.
  • the rock bolt 1 is anchored by means of a screwed onto the steel rod 3 expansion anchor 6 tensile.
  • the air-side end of the rock anchor 1 is formed by the anchor head 7, whose constructive structure on a larger scale in Fig. 2 is shown.
  • An armature plate 8 which covers the opening of the borehole 2 and can have a rectangular or round circumference and is provided with a central bore 9 for the passage of the steel bar 3 can be seen.
  • the anchor plate 8 With its underside, the anchor plate 8 is supported on the base 10, while the top 11 serves as a support for a concentric with the bore 9 arranged annular disc 12.
  • the annular disc 12 is threaded onto the free end of the steel rod 3 and has on its outer circumference closure means in the form of an external thread 13th
  • An anchor nut 14 is screwed onto the thread of the steel bar 3 and thereby clamps the annular disk 12 against the top 11 of the anchor plate 8, so that the Ring disc 12 rotatably between anchor nut 14 and anchor plate 8 is held on the steel bar 3.
  • the rock bolt 1 can be partially or completely surrounded by an injection material, in order to ensure corrosion protection within the borehole 2 in this way.
  • Fig. 3 shows a cap 17 according to the invention, which serves to produce the corrosion protection in the region of the anchor head 7.
  • the cap 17 is formed by a hollow cylinder 18, one end of which is closed by a lid 19. This results in a bell-shaped cavity 20.
  • the opening 21 facing the end of the cap 17 is formed by a threaded portion 22 which is provided with an internal thread 23.
  • the cavity 20 is filled with a corrosion protection compound 24.
  • Fig. 2 shows that such a cap 17 is pushed axially onto the anchor head 7 until the threaded portion 22 rests against the annular disc 12.
  • the projection 37 may also be formed by a correspondingly shaped depression or by correspondingly formed surfaces on the outer circumference of the hollow cylinder 18 of the cap 17.
  • Fig. 4 embodiment of the invention shown largely coincides with that already described.
  • the essential difference consists only in that the closure means are formed by a cylindrical projection 25, the in one piece from the top 11 of the anchor plate 8 emerges.
  • the projection 25 carries at its outer periphery a thread 13 which acts in the course of attachment of the cap 17 with its internal thread 23 as a closure means together.
  • a dome plate 26 interposed between a modified anchor plate 8 'and the anchoring means a dome plate 26 interposed.
  • the dome plate 26 has a crowned underside 27, which is supported relative to the modified anchor plate 8 '.
  • the modifications of the anchor plate 8 ' consist in an enlargement of the central bore 9' and spherical bearing surfaces 28 in the region of the contact joint to the dome plate 26. In this way forms the dome plate 26 together with the anchor plate 8 'a socket joint, the pivoting movements of the dome plate 26 against the Anchor plate 8 'allowed.
  • Fig. 5 shown embodiment of the invention has a dome plate 26 with a flat top 29, which serves to support an annular disc 12.
  • the annular disc 12 corresponds to that already described in the preceding embodiments and has a male thread 13 as a closure means.
  • the dome plate 26 has a central, to the bottom 27 stepwise or conically widening through hole 30 for the implementation of the steel bar 3. Otherwise, that applies among the Fig. 1 and 4 Said analogously.
  • Fig. 6 differs from the previously described in that as a connecting element instead of the loose annular disc 12 a cylindrical, integrally from the top 29 of the dome plate 26th worked out approach 39 is used, which has a thread 23 as a closure means on the outer circumference.
  • This embodiment thus corresponds, mutatis mutandis, in Fig. 4 so as to avoid repetition reference is made to the local part of the description.
  • FIG. 7 Another embodiment of the invention is in Fig. 7 shown.
  • a modified dome plate 26 ' which is supported on an anchor plate 8' and which is characterized by the circumference of the dome plate 26 'encircling, protruding from the top 29' collar 38.
  • the collar 38 On its inner side facing the longitudinal axis 4, the collar 38 is provided with closure means, for example with a thread, which cooperate on the outer circumference of the cap 17 'to produce a frictional connection with complementary closure means.
  • closure means for example with a thread
  • Fig. 8a and b show the implementation of the invention in an anchor 1 ', the Ankerzugglied several individual elements in the form of steel wire strands 31 has. Due to the existing symmetry with respect to the longitudinal axis 4 show the Fig. 8a and b for simplicity, only one half of the anchor head 7 '.
  • Both the in Fig. 8a as well as in Fig. 8b illustrated anchor 1 ' has a plurality of steel wire strands 31, which combined to form a bundle in the anchoring region of the borehole 2 occur.
  • the borehole 2 is bordered by an anchor plate 8, which is supported against the base 10 and which is provided with a central, aligned with the borehole 2 opening.
  • the anchor plate 8 serves as a bearing surface for a coaxially arranged anchor plate 32, which is provided with a number of through-holes corresponding to the number of steel wire strands 31, 31 conically widening in the direction of the ends of the steel wire strands.
  • the steel wire strands 31 are threaded through the through-holes and anchored in a known manner by means of conical anchoring wedges 33 arranged in the conical section of the through-holes.
  • first closure means for example a thread
  • second complementarily formed closure means on the inner circumference of the cap 17.
  • first closure means are not arranged on the anchor plate 8, but on the outer circumference of the anchoring disc 32, which in turn enter into a frictional connection with the second closure means on the inner circumference of the cap 17.

Landscapes

  • 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)

Description

Die Erfindung betrifft einen Erd- oder Felsanker mit einem Ankerzugglied aus einem oder mehreren Einzelelementen und mit einer korrosionsgeschützten Ankerkopfausbildung gemäß dem Oberbegriff des Patentanspruchs 1.The invention relates to a Erd- or rock anchor with an Ankerzugglied of one or more individual elements and with a corrosion-protected anchor head training according to the preamble of claim 1.

Erd- und Felsanker werden immer dann eingesetzt, wenn es darum geht, Kräfte im Bereich des Ankerkopfs in tiefer liegende Bodenschichten einzuleiten. Zu diesem Zweck weisen gattungsgemäße Anker ein Ankerzugglied auf, das beispielsweise von einem einzelnen Stabanker gebildet sein kann, der im Regelfall ein durchgehendes Außengewinde besitzt. Solche Anker sind als Felsbolzen oder Erdnägel bekannt, die entweder über ihre gesamte Länge durch Einbringen eines Injektionsmörtels in Verbund mit der Bohrlochwandung gebracht und anschließend verspannt werden oder die als sogenannte Freispielanker lediglich im Bereich des Bohrlochgrundes verankert und am luftseitigen Ende vorgespannt werden. Das Ver- oder Vorspannen geschieht mittels einer Ankermutter, die auf das Gewinde des Stabankers aufgeschraubt wird und sich gegenüber einer Ankerplatte abstützt.Earth and rock anchors are always used when it comes to initiate forces in the anchor head in deeper layers of soil. For this purpose, generic anchor on an Ankerzugglied, which may be formed for example by a single rod anchor, which has a continuous external thread as a rule. Such anchors are known as rock bolts or pegs, which are brought either over their entire length by introducing an injection mortar in conjunction with the borehole wall and then braced or anchored as so-called free-play anchors only in the area of the borehole bottom and biased at the air-side end. The tightening or pretensioning takes place by means of an anchor nut, which is screwed onto the thread of the bar anchor and is supported against an anchor plate.

Daneben sind gattungsgemäße Anker mit einem Ankerzugglied aus mehreren Einzelelementen bekannt. Die Einzelelemente werden zumeist von Stahldrahtlitzen gebildet, die im Bohrlochinnersten gegenüber der Bohrlochwandung verankert sind. Solche Litzenanker werden im Regelfall als Freispielanker hergestellt. Da die Litzen kein Außengewinde aufweisen, sieht die Verankerung im Bereich des Ankerkopfes eine Verankerungsscheibe vor, in der die Stahldrahtlitzen mittels Verankerungskeilen kraftschlüssig gehalten sind.In addition, generic anchor with an Ankerzugglied of several individual elements are known. The individual elements are usually formed by steel wire strands which are anchored in the wells against the borehole wall. Such strand anchors are usually produced as a free-play anchor. Since the strands have no external thread, the anchoring in the region of the anchor head provides an anchoring disc in which the steel wire strands are held in a force-locking manner by means of anchoring wedges.

Erd- und Felsanker werden sowohl für den temporären als auch dauerhaften Einsatz verwendet, wobei der dauerhafte Einsatz eine zum Schutz vor Korrosion geeignete konstruktive Ausbildung voraussetzt. Dabei wird unterschieden zwischen dem Korrosionsschutz im Bereich innerhalb des Bohrloches, der durch Injizieren des Bohrloches mit Injektionsmörtel eine Passivierung der Stahloberfläche erreicht wird und der eventuell mit einer Kunststoffummantelung ergänzt wird. Im Bereich des Ankerkopfes, also außerhalb des Bohrloches, wird ein Korrosionsschutz durch Umhüllung der freiliegenden Teile mit einer Korrosionsschutzmasse, beispielsweise Fett, erzielt.Soil and rock anchors are used both for temporary and permanent use, the permanent use requires a design suitable for protection against corrosion constructive training. A distinction is made between the corrosion protection in the area within the borehole, which is achieved by injecting the borehole with injection mortar passivation of the steel surface and may be supplemented with a plastic coating. In the area of Anchor head, ie outside the borehole, a corrosion protection by coating the exposed parts with a corrosion protection compound, such as grease, achieved.

Aus der DE 203 14 997 U1 ist ein Verpressanker mit einer Vielzahl von Stahldrahtlitzen als Ankerzugglied bekannt, der in ein Bohrloch eingebracht ist und der am luftseitigen Ende in einer Ankerplatte mittels einer Verankerungsscheibe und Keilen verankert ist. Die einzelnen Stahldrahtlitzen stehen mit ihren freien Enden über die Verankerungsscheibe über, um im Falle des Nachspannens oder Ausbauens einzelner Litzen, deren Enden mit einer Spannpresse greifen zu können.From the DE 203 14 997 U1 is a grout anchor with a variety of steel wire strands known as Ankerzugglied, which is introduced into a borehole and anchored at the air-side end in an anchor plate by means of an anchor disc and wedges. The individual steel wire strands project with their free ends over the anchoring disc in order to be able to grip their ends with a clamping press in case of re-tensioning or removal of individual strands.

Zur Gewährleistung des Korrosionsschutzes im Bereich des Ankerkopfes ist eine die Verankerungsscheibe und die überstehenden Enden der Stahldrahtlitzen umhüllenden Kappe vorgesehen, die mit einer Korrosionsschutzmasse gefüllt und über einen Randflansch mittels Schrauben an der Ankerplatte befestigt ist.In order to ensure corrosion protection in the region of the anchor head, a cap enclosing the anchoring disc and the protruding ends of the steel wire strands is provided, which is filled with a corrosion protection compound and fastened to the anchor plate via an edge flange by means of screws.

Diese Art des Korrosionsschutzes im Bereich des Ankerkopfes hat sich in der Praxis bewährt. Allerdings hat sich gezeigt, dass der Ankerkopf häufig nachträglich noch mit einem Schutzanstrich versehen wird, der auch die Köpfe der Befestigungsschrauben überdeckt. Insbesondere bei einer nachträglichen Demontage der Kappe im Zuge von Wartungs- oder Reparaturarbeiten ergibt sich daher die Notwendigkeit die Schraubenköpfe von den Farbresten befreien zu müssen, was einen erheblichen Aufwand mit sich bringt.This type of corrosion protection in the region of the anchor head has proven itself in practice. However, it has been shown that the anchor head is often subsequently provided with a protective coating, which also covers the heads of the mounting screws. In particular, in a subsequent disassembly of the cap in the course of maintenance or repair work, therefore, there is a need to free the screw heads of the color residues, which brings a considerable effort with it.

Vor diesem Hintergrund liegt der Erfindung die Aufgabe zugrunde, die konstruktive Ausbildung des Ankerkopfes zu verbessern, insbesondere im Hinblick auf eine Erleichterung der Montage- und Demontagearbeiten.Against this background, the invention has the object to improve the structural design of the anchor head, in particular with a view to facilitate the assembly and disassembly.

Diese Aufgabe wird durch einen Erd- oder Felsanker mit den Merkmalen des Patentanspruchs 1 gelöst.This object is achieved by a Erd- or rock anchor with the features of claim 1.

Vorteilhafte Ausführungsformen ergeben sich aus den Unteransprüchen.Advantageous embodiments will be apparent from the dependent claims.

Der Grundgedanke der Erfindung besteht darin, die Verschlussmittel zur Befestigung der Kappe am übrigen Ankerkopf in einem von außen unzugänglichen Bereich anzuordnen, beispielsweise in dem geschützten Bereich innerhalb der Kappe. Dies geschieht erfindungsgemäß mittels eines Anschlusselements, das konzentrisch die Einzelelemente umgreift und mit einem Auflagerelement verbunden ist. Das Anschlusselement stellt an seinem Außenumfang erste Verschlussmittel bereit, die mit zweiten Verschlussmittel am Innenumfang der Kappe zusammenwirken. Auf diese Weise werden die Verschlussmittel nicht durch nachträgliche äußere Maßnahmen wie zum Beispiel einen Schutzanstrich oder mechanische Beschädigung in ihrer Funktion beeinträchtigt. Durch den Korrosionsschutz innerhalb der Kappe ist zudem gewährleistet, dass die Verschlussmittel ebenfalls vor Korrosion geschützt sind, so dass deren Funktion dauerhaft erhalten bleibt und auch ein Lösen der Kappe nach vielen Jahren noch ohne Schwierigkeiten möglich ist.The basic idea of the invention is to arrange the closure means for fastening the cap to the rest of the anchor head in an externally inaccessible area, for example in the protected area inside the cap. This is done according to the invention by means of a connection element which concentrically surrounds the individual elements and is connected to a support element. The connection element provides on its outer circumference first closure means, which cooperate with second closure means on the inner circumference of the cap. In this way, the closure means are not impaired by subsequent external measures such as a protective coating or mechanical damage in their function. The corrosion protection within the cap also ensures that the closure means are also protected against corrosion, so that their function is permanently maintained and also a release of the cap after many years is still possible without difficulty.

Ein weiterer Vorteil besteht darin, dass die Verschlussmittel im Zuge des Aufsetzens der Kappe aktiviert werden, was sehr schnell erfolgen kann und daher gegenüber der Befestigung mittels Schrauben eine erhebliche Verringerung des Arbeitsaufwandes bedeutet.Another advantage is that the closure means are activated in the course of placing the cap, which can be done very quickly and therefore compared to the attachment by means of screws means a significant reduction in the workload.

Da die Verschlussmittel somit von außen nicht sichtbar sind, zeichnet sich ein erfindungsgemäßer Anker durch ein verbessertes äußeres Erscheinungsbild aus und verleitet Dritte, denen der Blick auf die Verschlussmittel verwehrt ist, weniger zu einem missbräuchlichen Abnehmen der Kappe. Zur Vorbeugung von Missbrauch kann zusätzlich eine konstruktive Kappenausbildung beitragen, die den Einsatz von Spezialwerkzeugen zum Lösen der Kappe bedingt. So kann zentrisch am Deckel der Schraubkappe eine Vertiefung oder ein Ansatz mit polygonem Querschnitt angeordnet sein, beispielsweise in Form eines regelmäßigen Vier- oder Sechskantquerschnitts, in die oder an den ein entsprechend geformtes Werkzeug eingreift. Alternativ kann der Umfang der Schraubkappe Mittel aufweisen, die in Kraftschluss mit einem Werkzeug gebracht werden können, beispielsweise plane oder profilierte Flächen, die zum Ansetzen eines Werkzeugs geeignet sind.Since the closure means are thus not visible from the outside, an anchor according to the invention is characterized by an improved external appearance and entices third parties who are denied the view of the closure means, less to an abusive removal of the cap. In addition, to prevent abuse, a constructive cap training can contribute, which requires the use of special tools for releasing the cap. Thus, a recess or a projection with a polygonal cross-section can be arranged centrally on the cover of the screw cap, for example in the form of a regular four- or hexagonal cross-section into or onto which a correspondingly shaped tool engages. Alternatively, the circumference of the screw cap may comprise means that can be brought into frictional engagement with a tool, for example, flat or profiled surfaces, which are suitable for applying a tool.

Gemäß einer vorteilhaften Ausführungsform der Erfindung besteht das Anschlusselement aus einer auf die Einzelelemente aufsteckbaren Ringscheibe, die zwischen Ankermutter und Ankerplatte eingeklemmt ist und mit ihrem Außenumfang in Interaktion mit den Verschlussmitteln am Innenumfang der Kappe tritt. In diesem Fall dient die Ankerplatte als Auflagerelement. Eine solche Ausführungsform ist aus produktionstechnischer Sicht von Vorteil, da sich ein eigenes Teil, das erst bei der Montage des Ankerkopfes mit den übrigen Teilen kombiniert wird, einfach und daher wirtschaftlich herstellen lässt.According to an advantageous embodiment of the invention, the connecting element consists of an attachable to the individual elements annular disc which is clamped between the anchor nut and anchor plate and occurs with its outer periphery in interaction with the closure means on the inner circumference of the cap. In this case, the anchor plate serves as a support element. Such an embodiment is advantageous from a production point of view, since a separate part, which is combined with the other parts only during assembly of the anchor head, can be produced simply and therefore economically.

Eine alternative Ausführungsform sieht hingegen vor, dass das Anschlusselement von einem aus der Ankerplatte einstückig hervorgehenden zylindrischen Ansatz gebildet ist, was vor allem bei der Montage des Ankers Vorteile bringt, da keine eigenen Teile vorgehalten und gehandhabt werden müssen.An alternative embodiment, however, provides that the connection element is formed by a one-piece from the anchor plate cylindrical projection, which brings advantages especially in the assembly of the anchor, since no own parts must be kept and handled.

Die Verschlussmittel zur Befestigung der Kappe an der übrigen Ankerkopfausbildung bestehen bevorzugterweise aus einem Gewinde, insbesondere einem Grobgewinde. Dadurch ist es möglich, die Kappe schnell und sicher auf dem Ankerkopf zu befestigen. Dabei schließt die Kappe über ihren gesamten Umfang kraftschlüssig und dichtend an die Ankerplatte an.The closure means for fastening the cap to the rest of the anchor head training preferably consist of a thread, in particular a coarse thread. This makes it possible to attach the cap quickly and safely on the anchor head. The cap closes over its entire circumference frictionally and sealingly against the anchor plate.

Eine Alternative hierzu bilden Verschlussmittel in Form eines Bajonettverschlusses, der sich ebenfalls durch einen schnellen und sicheren Schließmechanismus auszeichnet.An alternative to this form closure means in the form of a bayonet closure, which is also characterized by a fast and secure locking mechanism.

Die Erfindung ist sowohl bei Ankern mit als auch ohne Winkelausgleich möglich, wobei im Falle eines Winkelausgleichs das Anschlusselement mit den Verschlussmitteln an oder auf einer Kalottenplatte angeordnet ist. In diesem Fall dient die Kalottenplatte als Auflagerelement. Die Erfindung besitzt daher ein sehr breites Anwendungsfeld.The invention is possible both with anchors with and without angle compensation, wherein in the case of an angle compensation, the connection element is arranged with the closure means on or on a dome plate. In this case, the dome plate serves as a support element. The invention therefore has a very broad field of application.

Das zeigt auch die erfindungsgemäße Umsetzung der Erfindung bei Ankern mit mehreren Einzelelementen, beispielsweise Litzenankern, bei denen die Verschlussmittel vorzugsweise am Außenumfang der Verankerungsscheibe oder auch der Ankerplatte selbst angeordnet sind.This is also the implementation of the invention according to the invention in anchors with several individual elements, such as strand anchors, in which the Closing means are preferably arranged on the outer circumference of the anchoring disc or the anchor plate itself.

Eine weitere Ausführungsform der Erfindung zeigt, dass es auch möglich ist, die Verschlussmittel am Außenumfang der Kappe anzuordnen. In diesem Fall wird das Anschlusselement von einem umlaufenden Bund gebildet, der monolithisch aus der Oberseite der Ringscheibe, Kalottenplatte, Ankerplatte oder Verankerungsscheibe hervorsteht und an dessen Innenumfang die komplementären Verschlussmittel verlaufen.A further embodiment of the invention shows that it is also possible to arrange the closure means on the outer circumference of the cap. In this case, the connecting element is formed by a circumferential collar which protrudes monolithically from the upper side of the annular disc, dome plate, anchor plate or anchoring disc and extend on the inner circumference of the complementary closure means.

Die Erfindung wird nachstehend anhand eines in den Zeichnungen dargestellten Ausführungsbeispiels näher erläutert. Dabei werden für konstruktiv gleiche und funktionell gleichwirkende Teile identische Bezugszeichen verwendet, um das Verständnis der Erfindung zu erleichtern.The invention will be explained in more detail with reference to an embodiment shown in the drawings. In this case, identical reference numerals are used for structurally identical and functionally identical parts in order to facilitate the understanding of the invention.

Es zeigt

Fig. 1
einen Längsschnitt durch einen erfindungsgemäßen Anker in eingebautem Zustand,
Fig. 2
einen Teilschnitt des in Fig. 1 dargestellten Ankers im Bereich des Ankerkopfes während des Aufsetzens einer Kappe,
Fig. 3
einen Längsschnitt durch eine mit erfindungsgemäßen Verschlussmitteln ausgerüstete Kappe,
Fig. 4
einen Teilschnitt durch eine weitere Ausführungsform der Erfindung im Bereich des Ankerkopfes,
Fig. 5
einen Teilschnitt durch einen erfindungsgemäßen Anker mit Winkelausgleich im Bereich des Ankerkopfes,
Fig. 6
eine weitere Ausführungsform eines erfindungsgemäßen Ankers mit Winkelausgleich im Bereich des Ankerkopfes,
Fig. 7
eine zusätzliche Ausführungsform eines erfindungsgemäßen Ankers mit Winkelausgleich im Bereich des Ankerkopfes und die
Fig. 8a, b
jeweils einen halben Teilschnitt durch einen erfindungsgemäßen Ankerkopf eines Ankers mit mehreren Einzelelementen.
It shows
Fig. 1
a longitudinal section through an anchor according to the invention in the installed state,
Fig. 2
a partial section of the in Fig. 1 illustrated anchor in the region of the anchor head during the placement of a cap,
Fig. 3
a longitudinal section through a cap equipped with closure means according to the invention,
Fig. 4
a partial section through a further embodiment of the invention in the region of the anchor head,
Fig. 5
a partial section through an anchor according to the invention with angular compensation in the region of the anchor head,
Fig. 6
a further embodiment of an armature according to the invention with angular compensation in the region of the anchor head,
Fig. 7
an additional embodiment of an anchor according to the invention with angular compensation in the region of the anchor head and the
Fig. 8a, b
each half a section through an anchor head according to the invention an anchor with several individual elements.

Die Fig. 1 bis 3 zeigen eine erste Ausführungsform der Erfindung, wobei die Fig. 1 und 3 auch sinngemäß für die Ausführungsformen der in den Fig. 4 bis 8 dargestellten Ankerkopfausbildungen gelten, soweit die konstruktive Ausgestaltung dies erlaubt.The Fig. 1 to 3 show a first embodiment of the invention, wherein the Fig. 1 and 3 also mutatis mutandis for the embodiments of the in the Fig. 4 to 8 Anchor head training shown apply, as far as the structural design allows.

Man sieht einen Felsanker 1, der innerhalb eines Bohrloches 2 angeordnet ist. Das Ankerzugglied des Felsankers 1 besteht aus einem einzigen Einzelelement in Form eines gerippten Stahlstabes 3, dessen Längsachse das Bezugszeichen 4 trägt. Im Bohrlochgrund 5 ist der Felsanker 1 mittels eines auf den Stahlstab 3 aufgeschraubten Spreizdübels 6 zugfest verankert.One sees a rock anchor 1, which is arranged within a borehole 2. The Ankerzugglied the rock anchor 1 consists of a single element in the form of a ribbed steel bar 3, the longitudinal axis of which carries the reference numeral 4. In the borehole bottom 5, the rock bolt 1 is anchored by means of a screwed onto the steel rod 3 expansion anchor 6 tensile.

Das luftseitige Ende des Felsankers 1 wird vom Ankerkopf 7 gebildet, dessen konstruktiver Aufbau in größerem Maßstab in Fig. 2 dargestellt ist. Man sieht eine die Öffnung des Bohrloches 2 abdeckende Ankerplatte 8, die einen rechteckförmigen oder runden Umfang aufweisen kann und mit einer zentrischen Bohrung 9 zur Durchführung des Stahlstabes 3 ausgestattet ist. Mit ihrer Unterseite stützt sich die Ankerplatte 8 am Untergrund 10 ab, während die Oberseite 11 als Auflage für eine konzentrisch zur Bohrung 9 angeordneten Ringscheibe 12 dient. Die Ringscheibe 12 ist auf das freie Ende des Stahlstabes 3 aufgefädelt und besitzt an ihrem Außenumfang Verschlussmittel in Form eines Außengewindes 13.The air-side end of the rock anchor 1 is formed by the anchor head 7, whose constructive structure on a larger scale in Fig. 2 is shown. An armature plate 8 which covers the opening of the borehole 2 and can have a rectangular or round circumference and is provided with a central bore 9 for the passage of the steel bar 3 can be seen. With its underside, the anchor plate 8 is supported on the base 10, while the top 11 serves as a support for a concentric with the bore 9 arranged annular disc 12. The annular disc 12 is threaded onto the free end of the steel rod 3 and has on its outer circumference closure means in the form of an external thread 13th

Eine Ankermutter 14 ist auf das Gewinde des Stahlstabes 3 aufgeschraubt und spannt dabei die Ringscheibe 12 gegen die Oberseite 11 der Ankerplatte 8, so dass die Ringscheibe 12 drehfest zwischen Ankermutter 14 und Ankerplatte 8 auf dem Stahlstab 3 gehalten ist.An anchor nut 14 is screwed onto the thread of the steel bar 3 and thereby clamps the annular disk 12 against the top 11 of the anchor plate 8, so that the Ring disc 12 rotatably between anchor nut 14 and anchor plate 8 is held on the steel bar 3.

Im Bohrloch 2 kann der Felsanker 1 teilweise oder vollständig von einem Injektionsgut umgeben sein, um auf diese Weise einen Korrosionsschutz innerhalb des Bohrloches 2 zu gewährleisten.In the borehole 2, the rock bolt 1 can be partially or completely surrounded by an injection material, in order to ensure corrosion protection within the borehole 2 in this way.

Fig. 3 zeigt eine erfindungsgemäße Kappe 17, die zur Herstellung des Korrosionsschutzes im Bereich des Ankerkopfes 7 dient. Die Kappe 17 wird von einem Hohlzylinder 18 gebildet, dessen eines Ende mit einem Deckel 19 verschlossen ist. Dadurch entsteht ein glockenförmiger Hohlraum 20. Das der Öffnung 21 zugewandte Ende der Kappe 17 wird von einem Gewindeabschnitt 22 gebildet, der mit einem Innengewinde 23 versehen ist. Zur Sicherstellung des Korrosionsschutzes ist der Hohlraum 20 mit einer Korrosionsschutzmasse 24 ausgefüllt. Fig. 3 shows a cap 17 according to the invention, which serves to produce the corrosion protection in the region of the anchor head 7. The cap 17 is formed by a hollow cylinder 18, one end of which is closed by a lid 19. This results in a bell-shaped cavity 20. The opening 21 facing the end of the cap 17 is formed by a threaded portion 22 which is provided with an internal thread 23. To ensure corrosion protection, the cavity 20 is filled with a corrosion protection compound 24.

Aus Fig. 2 geht hervor, dass eine solche Kappe 17 axial auf den Ankerkopf 7 aufgeschoben wird, bis der Gewindeabschnitt 22 an der Ringscheibe 12 anliegt. Durch Aufschrauben der Kappe 17 mit ihrem Innengewinde 23 auf das Außengewinde 13 der Ringscheibe 12, bis der Rand der Öffnung 21 auf der Oberseite 11 der Ankerplatte 12 aufliegt, entsteht ein dichter Abschluss zwischen Kappe 17 und Ankerplatte 12.Out Fig. 2 shows that such a cap 17 is pushed axially onto the anchor head 7 until the threaded portion 22 rests against the annular disc 12. By screwing the cap 17 with its internal thread 23 on the external thread 13 of the annular disc 12 until the edge of the opening 21 rests on the top 11 of the anchor plate 12, a tight seal between cap 17 and anchor plate 12th

Zum Aufschrauben der Kappe 17 kann diese gegebenenfalls durch geeignete Ausbildung des Umfangs oder Deckels zum formschlüssigen Ansetzen eines Spezialwerkzeuges weiterentwickelt sein. Zu diesem Zweck dient der in den Figuren 1 bis 6 dargestellte koaxiale, sechskantförmige Ansatz 37 an der Außenseite des Deckels 19 der Kappe 17. Alternativ kann der Ansatz 37 auch durch eine entsprechend geformte Vertiefung gebildet sein oder durch entsprechend ausgebildete Flächen am Außenumfang des Hohlzylinders 18 der Kappe 17.For screwing on the cap 17, this may optionally be further developed by suitable design of the circumference or cover for the form-fitting attachment of a special tool. For this purpose serves in the FIGS. 1 to 6 Alternatively, the projection 37 may also be formed by a correspondingly shaped depression or by correspondingly formed surfaces on the outer circumference of the hollow cylinder 18 of the cap 17. The coaxial, hexagonal projection 37 on the outside of the cover 19.

Die in Fig. 4 gezeigte Ausführungsform der Erfindung stimmt weitestgehend mit der bereits beschriebenen überein. Der wesentliche Unterschied besteht lediglich darin, dass die Verschlussmittel von einem zylindrischen Ansatz 25 gebildet werden, der einstückig aus der Oberseite 11 der Ankerplatte 8 hervorgeht. Der Ansatz 25 trägt an seinem Außenumfang ein Gewinde 13, das im Zuge der Befestigung der Kappe 17 mit deren Innengewinde 23 als Verschlussmittel zusammen wirkt. Alternativ ist es möglich, die Verschlussmittel direkt am Außenumfang der Ankerplatte 8 vorzusehen, was einen entsprechend großen Durchmesser der Kappe 17 erforderlich macht.In the Fig. 4 embodiment of the invention shown largely coincides with that already described. The essential difference consists only in that the closure means are formed by a cylindrical projection 25, the in one piece from the top 11 of the anchor plate 8 emerges. The projection 25 carries at its outer periphery a thread 13 which acts in the course of attachment of the cap 17 with its internal thread 23 as a closure means together. Alternatively, it is possible to provide the closure means directly on the outer circumference of the anchor plate 8, which requires a correspondingly large diameter of the cap 17.

Während die Fig. 1 bis 4 Anker 1 zeigen, deren Zugglied senkrecht zur Oberseite 11 der Ankerplatte 8 verläuft, betreffen die Fig. 5 und 6 Anwendungsfälle mit geneigter Längsachse 4 gegenüber der Ankerplatte 8. Dies macht im Bereich des Ankerkopfes 7 einen Winkelausgleich erforderlich, um den Anker 1 lediglich einer reinen Zugbelastung zu unterwerfen.While the Fig. 1 to 4 Anchor 1 show, the tension member is perpendicular to the top 11 of the anchor plate 8, concern the Fig. 5 and 6 Applications with inclined longitudinal axis 4 relative to the anchor plate 8. This makes in the anchor head 7 an angle compensation required to subject the anchor 1 only a pure tensile load.

Zu diesem Zweck ist bei den Ausführungsformen gemäß den Fig. 5 und 6 zwischen einer modifizierten Ankerplatte 8' und dem Verankerungsmittel eine Kalottenplatte 26 zwischengeschaltet. Die Kalottenplatte 26 besitzt eine ballige Unterseite 27, die sich gegenüber der modifizierten Ankerplatte 8' abstützt. Die Modifikationen der Ankerplatte 8' bestehen in einer Vergrößerung der zentrischen Bohrung 9' sowie sphärischen Lagerflächen 28 im Bereich der Kontaktfuge zur Kalottenplatte 26. Auf diese Weise bildet die Kalottenplatte 26 zusammen mit der Ankerplatte 8' ein Pfannengelenk, das Schwenkbewegungen der Kalottenplatte 26 gegenüber der Ankerplatte 8' erlaubt.For this purpose, in the embodiments according to the Fig. 5 and 6 between a modified anchor plate 8 'and the anchoring means a dome plate 26 interposed. The dome plate 26 has a crowned underside 27, which is supported relative to the modified anchor plate 8 '. The modifications of the anchor plate 8 'consist in an enlargement of the central bore 9' and spherical bearing surfaces 28 in the region of the contact joint to the dome plate 26. In this way forms the dome plate 26 together with the anchor plate 8 'a socket joint, the pivoting movements of the dome plate 26 against the Anchor plate 8 'allowed.

Die in Fig. 5 gezeigte Ausführungsform der Erfindung besitzt eine Kalottenplatte 26 mit einer ebenen Oberseite 29, die zur Abstützung einer Ringscheibe 12 dient. Die Ringscheibe 12 entspricht der bereits bei den vorhergehenden Ausführungsbeispielen beschrieben und weist als Verschlussmittel ein Außengewinde 13 auf. Zudem besitzt die Kalottenplatte 26 eine zentrische, sich zur Unterseite 27 stufig oder konisch weitende Durchgangsbohrung 30 zur Durchführung des Stahlstabs 3. Ansonsten gilt das unter den Fig. 1 und 4 Gesagte sinngemäß.In the Fig. 5 shown embodiment of the invention has a dome plate 26 with a flat top 29, which serves to support an annular disc 12. The annular disc 12 corresponds to that already described in the preceding embodiments and has a male thread 13 as a closure means. In addition, the dome plate 26 has a central, to the bottom 27 stepwise or conically widening through hole 30 for the implementation of the steel bar 3. Otherwise, that applies among the Fig. 1 and 4 Said analogously.

Die in Fig. 6 gezeigte Ausführungsform der Erfindung unterscheidet sich von der zuvor beschriebenen dadurch, dass als Anschlusselement anstelle der losen Ringscheibe 12 ein zylindrischer, einstückig aus der Oberseite 29 der Kalottenplatte 26 herausgearbeiteter Ansatz 39 dient, der als Verschlussmittel am Außenumfang ein Gewinde 23 besitzt. Diese Ausführungsform entspricht somit sinngemäß der in Fig. 4 beschriebenen, so dass um Wiederholungen zu vermeiden auf den dortigen Teil der Beschreibung Bezug genommen wird.In the Fig. 6 embodiment shown of the invention differs from the previously described in that as a connecting element instead of the loose annular disc 12 a cylindrical, integrally from the top 29 of the dome plate 26th worked out approach 39 is used, which has a thread 23 as a closure means on the outer circumference. This embodiment thus corresponds, mutatis mutandis, in Fig. 4 so as to avoid repetition reference is made to the local part of the description.

Eine weitere Ausführungsform der Erfindung ist in Fig. 7 dargestellt. Dort sieht man eine modifizierte Kalottenplatte 26', die sich an einer Ankerplatte 8' abstützt und die sich durch einen den Umfang der Kalottenplatte 26' umlaufenden, aus deren Oberseite 29' ragenden Bund 38 auszeichnet. An seiner der Längsachse 4 zugewandten Innenseite ist der Bund 38 mit Verschlussmittel beispielsweise mit einem Gewinde ausgestattet, die zur Herstellung einer kraftschlüssigen Verbindung mit komplementären Verschlussmitteln am Außenumfang der Kappe 17' zusammenwirken. Bei dieser Ausführungsform liegt somit der untere mit Verschlussmitteln versehene Rand der Kappe 17' geschützt in einer vom Bund 38 gebildeten Aufnahme.Another embodiment of the invention is in Fig. 7 shown. There you can see a modified dome plate 26 ', which is supported on an anchor plate 8' and which is characterized by the circumference of the dome plate 26 'encircling, protruding from the top 29' collar 38. On its inner side facing the longitudinal axis 4, the collar 38 is provided with closure means, for example with a thread, which cooperate on the outer circumference of the cap 17 'to produce a frictional connection with complementary closure means. In this embodiment, therefore, the lower edge provided with closure means of the cap 17 'is protected in a receptacle formed by the collar 38.

Die Fig. 8a und b zeigen die Umsetzung der Erfindung bei einem Anker 1', dessen Ankerzugglied mehrere Einzelelemente in Form von Stahldrahtlitzen 31 aufweist. Aufgrund der vorhandenen Symmetrie bezüglich der Längsachse 4 zeigen die Fig. 8a und b der Einfachheit halber lediglich eine Hälfte des Ankerkopfes 7'.The Fig. 8a and b show the implementation of the invention in an anchor 1 ', the Ankerzugglied several individual elements in the form of steel wire strands 31 has. Due to the existing symmetry with respect to the longitudinal axis 4 show the Fig. 8a and b for simplicity, only one half of the anchor head 7 '.

Sowohl der in Fig. 8a als auch der in Fig. 8b dargestellte Anker 1' besitzt eine Vielzahl von Stahldrahtlitzen 31, die zu einem Bündel zusammengefasst im Verankerungsbereich aus dem Bohrloch 2 treten. Das Bohrloch 2 ist von einer Ankerplatte 8 eingefasst, die sich gegenüber dem Untergrund 10 abstützt und die mit einer zentralen, mit dem Bohrloch 2 fluchtenden Öffnung versehen ist. Die Ankerplatte 8 dient als Lagerfläche für eine koaxial angeordnete Verankerungsscheibe 32, die mit einer der Anzahl der Stahldrahtlitzen 31 entsprechende Anzahl von Durchgangsbohrungen versehen ist, die sich in Richtung der Enden der Stahldrahtlitzen 31 konisch erweitern. Die Stahldrahtlitzen 31 sind durch die Durchgangsbohrungen hindurchgefädelt und mit Hilfe von konischen Verankerungskeilen 33, die im konisch verlaufenden Abschnitt der Durchgangsbohrungen angeordnet sind, in bekannter Weise verankert.Both the in Fig. 8a as well as in Fig. 8b illustrated anchor 1 'has a plurality of steel wire strands 31, which combined to form a bundle in the anchoring region of the borehole 2 occur. The borehole 2 is bordered by an anchor plate 8, which is supported against the base 10 and which is provided with a central, aligned with the borehole 2 opening. The anchor plate 8 serves as a bearing surface for a coaxially arranged anchor plate 32, which is provided with a number of through-holes corresponding to the number of steel wire strands 31, 31 conically widening in the direction of the ends of the steel wire strands. The steel wire strands 31 are threaded through the through-holes and anchored in a known manner by means of conical anchoring wedges 33 arranged in the conical section of the through-holes.

Zur Befestigung einer schützenden Kappe 17 am Ankerkopf 7' dient als Anschlusselement die Ankerplatte 8. Am Außenumfang der Ankerplatte 8 umlaufende erste Verschlussmittel, zum Beispiel ein Gewinde, wirken zu diesem Zweck mit zweiten komplementär ausgebildeten Verschlussmitteln am Innenumfang der Kappe 17 zusammen.For fixing a protective cap 17 on the anchor head 7 'serves as a connection element, the anchor plate 8. On the outer periphery of the anchor plate 8 circumferential first closure means, for example a thread, cooperate for this purpose with second complementarily formed closure means on the inner circumference of the cap 17.

Davon unterscheidet sich die Ausführungsform gemäß Fig. 8b dadurch, dass die ersten Verschlussmittel nicht an der Ankerplatte 8, sondern am Außenumfang der Verankerungsscheibe 32 angeordnet sind, die wiederum mit den zweiten Verschlussmitteln am Innenumfang der Kappe 17 eine kraftschlüssige Verbindung eingehen.This differs from the embodiment according to Fig. 8b in that the first closure means are not arranged on the anchor plate 8, but on the outer circumference of the anchoring disc 32, which in turn enter into a frictional connection with the second closure means on the inner circumference of the cap 17.

Claims (14)

  1. Ground anchor or rock anchor, in particular a permanent anchor, having an anchor tension member composed of one or more individual elements (3, 31) such as steel rods, steel wires or steel wire strands, the anchor tension member being intended to be inserted into a drill hole (2) and to be anchored therein, and having an anchor head formation (7) for anchoring the anchor tension member to the exposed end of the drill hole (2), the anchor head formation (7) comprising a support element (8, 26, 26') for being directly or indirectly supported on the substratum (10), and also comprising anchoring means (14) for tensioning the individual elements (3), which anchoring means can be brought into frictional connection with the individual elements (3) while being supported on the support element (8, 26, 26'), and having a cap (17) which encompasses the anchoring means (14) and the ends of the individual elements (3) on the exposed end of the anchor head (7), characterised in that a connecting element (12, 25, 38) is arranged between the support element (8, 26, 26') and the anchoring means (14), which connecting element has first closure means on the circumferential side and in that the cap (17) has second complementarily shaped closure means on the circumferential side, the first and second closure means cooperating in order to frictionally connect the cap (17) and the connecting element (13, 25).
  2. Anchor according to claim 1, characterised in that the first closure means are arranged on the outer circumference of the connecting element (12, 25) and the second closure means are arranged on the inner circumference of the cap (17).
  3. Anchor according to claim 1, characterised in that the connecting element has a circumferential shoulder (38), on the inner circumference of which the first closure means are arranged, and the second closure means being provided on the outer circumference of the cap (17).
  4. Anchor according to any of claims 1 to 3, characterised in that the connecting element comprises an annular disc (12) which is inserted and clamped between the support element (8, 26) and the anchoring means (14).
  5. Anchor according to any of claims 1 to 3, characterised in that the connecting element comprises a hollow, cylindrical shoulder (25) which extends in one piece from the support surface (11) of the support element (8, 26), such that it encompasses one or more individual elements (3).
  6. Anchor according to any of claims 1 to 5, characterised in that the first closure means of the connecting element (12, 25, 38) and the second closure means of the cap (17) consist of cooperating threads (13, 23).
  7. Anchor according to any of claims 1 to 5, characterised in that the first closure means of the connecting element and the second closure means of the cap form a bayonet catch.
  8. Anchor according to any of claims 1 to 7, characterised in that the support element is formed by an anchor plate (8).
  9. Anchor according to any of claims 1 to 7, characterised in that the support element is formed by a domed plate (26).
  10. Anchor according to any of claims 1 to 9, characterised in that the anchoring means is formed by an anchor nut (14) which can be screwed onto an external thread on the end of the individual elements (3).
  11. Anchor according to any of claims 1 to 9, characterised in that the anchoring means are formed by an anchoring disc (32) having anchoring wedges (33).
  12. Anchor according to any of claims 1 to 11, characterised in that the cap (17) has, on the outer surface, means for positioning a tool.
  13. Anchor according to claim 12, characterised in that the means consist of a centred square or hexagonal recess or shoulder (37) on the cover of the cap (17).
  14. Anchor according to claim 12, characterised in that the means consist of planar or profiled surfaces on the circumference of the cap (17).
EP09000397.1A 2008-01-28 2009-01-14 Soil or rock anchor with an anchor pull made of one or more individual elements with corrosion protected anchor head design Not-in-force EP2085521B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE202008001248U DE202008001248U1 (en) 2008-01-28 2008-01-28 Earth anchor or rock anchor with an anchor draw link made of one or more individual elements with corrosion-protected anchor head formation

Publications (2)

Publication Number Publication Date
EP2085521A1 EP2085521A1 (en) 2009-08-05
EP2085521B1 true EP2085521B1 (en) 2015-08-26

Family

ID=39245004

Family Applications (1)

Application Number Title Priority Date Filing Date
EP09000397.1A Not-in-force EP2085521B1 (en) 2008-01-28 2009-01-14 Soil or rock anchor with an anchor pull made of one or more individual elements with corrosion protected anchor head design

Country Status (8)

Country Link
US (1) US7967532B2 (en)
EP (1) EP2085521B1 (en)
JP (1) JP2009174309A (en)
KR (1) KR20090082864A (en)
AU (1) AU2009200236B2 (en)
CA (1) CA2651242C (en)
DE (1) DE202008001248U1 (en)
ZA (1) ZA200900612B (en)

Families Citing this family (25)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GR1006289B (en) * 2008-02-14 2009-02-25 Ιωαννης Λυμπερης Tractor for construction works
WO2010072792A1 (en) 2008-12-23 2010-07-01 Htp Motion Gmbh Anchor sleeve for rock bore holes
US20110036025A1 (en) * 2009-08-13 2011-02-17 Boulay Luke F Ground Anchor
DE202010006059U1 (en) * 2010-04-23 2010-07-22 Stahlwerk Annahütte Max Aicher GmbH & Co KG threaded rod
DE202010010749U1 (en) 2010-07-28 2010-10-21 Bundesanstalt für Wasserbau Concrete, slidably designed and fatigue-free head construction for anchoring tension elements on cyclically stressed components
CL2011000042A1 (en) 2011-01-07 2011-06-17 Fortification system comprising a standard helical bar, an expansion head adapted to the thread of the bar, an element of plastic material, a corrugated plastic tube, a standard fortification plate and a threaded fortification nut according to the helical bolt that use.
EP2489785B1 (en) * 2011-02-17 2014-10-15 Trumer Schutzbauten GesmbH Rock fall obstruction
CN102226406B (en) * 2011-05-10 2013-09-18 中铁十二局集团第一工程有限公司 Construction method of super-long advanced anchor bars
US20130019542A1 (en) * 2011-07-20 2013-01-24 Bishop Richard B Safe room ii
DE202012101908U1 (en) * 2012-05-24 2013-08-26 Georg Rothbucher convergence bolts
CN102979541A (en) * 2012-12-11 2013-03-20 安徽恒源煤电股份有限公司 Novel anchor bolt and anchor cable installation method
DE102013002734B4 (en) * 2013-02-19 2015-03-05 Firep Rebar Technology Gmbh Anchor head for a tie rod and anchor nut for an anchor head of a tie rod
EP4212682A1 (en) * 2014-05-19 2023-07-19 Felix L. Sorkin Cap for anchor of post-tension anchorage system
EP3128096B1 (en) * 2015-08-04 2018-11-07 Felix L. Sorkin Method for forming a post-tensioned concrete member
WO2017023922A1 (en) 2015-08-04 2017-02-09 Felix Sorkin Pocket cap for post-tensioned concrete member
CN105909288B (en) * 2016-04-18 2018-05-04 东北大学 Ripple energy-consumption anchor rod is inhaled in a kind of anti-rock burst
US9725866B1 (en) 2016-11-09 2017-08-08 Moretrench American Corporation Tieback assembly with removable tendon threaded element
EP3336258B1 (en) * 2016-12-16 2022-03-09 Stahlton AG End anchorage for a soil and/or rock anchor
DE102016124736A1 (en) * 2016-12-19 2018-06-21 Schöck Bauteile GmbH Component for thermal insulation
US10508447B2 (en) * 2017-04-28 2019-12-17 Precision-Hayes International Inc. Sealing cover for concrete anchor
CN109834819B (en) * 2018-11-15 2024-10-15 深圳市路桥建设集团有限公司 Anchor sealing device
US11486143B2 (en) * 2020-03-26 2022-11-01 Felix Sorkin Intermediate anchor assembly
DE102020132950A1 (en) 2020-12-10 2022-06-15 Geobrugg Ag Corrosion protection device, corrosion protection system, corrosion-protected slope stabilization system and method for corrosion-protected anchoring of a geotechnical anchor element
CN113585239A (en) * 2021-09-02 2021-11-02 中庆建设有限责任公司 Prestressed anchor pile
CN113882397A (en) * 2021-11-22 2022-01-04 哈尔滨工业大学 Cold region prestressing force self-interacting prevents freezing screw anchor bolt support system of pulling out

Family Cites Families (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE8002044U1 (en) * 1980-01-26 1980-04-30 Dyckerhoff & Widmann Ag, 8000 Muenchen Wedge anchorage for a tendon in a concrete component
DE3437107A1 (en) * 1984-10-10 1986-04-10 Dyckerhoff & Widmann AG, 8000 München TIE LINK, ESPECIALLY SLOPED ROPE FOR A SLIDING ROPE BRIDGE
US4773198A (en) * 1986-09-05 1988-09-27 Continental Concrete Structures, Inc. Post-tensioning anchorages for aggressive environments
US4918887A (en) * 1987-10-14 1990-04-24 Vsl Corporation Protective tendon tensioning anchor assemblies
US5440842A (en) * 1992-12-09 1995-08-15 Felix L. Sorkin Sealed tendon-tensioning anchor system
ATE150123T1 (en) * 1993-01-11 1997-03-15 Vsl Int Ag TENSIONING ANCHORAGE FOR AT LEAST ONE TENSION ELEMENT RUNNING WITHIN A COVER TUBE AND METHOD FOR PRODUCING THE TENSIONING ANCHORAGE
US5386675A (en) * 1993-07-12 1995-02-07 High Industries, Inc. Concrete beam connection sleeve
JP2922412B2 (en) * 1993-12-29 1999-07-26 守谷鋼機株式会社 Anchor head cap mounting method and head cap mounting structure
US5630301A (en) * 1995-05-25 1997-05-20 Harris P/T, A Division Of Harris Steel Limited Anchorage assembly and method for post-tensioning in pre-stressed concrete structures
US6056482A (en) * 1996-01-11 2000-05-02 Jennmar Corporation Cable bolt head
US5785463A (en) * 1996-01-11 1998-07-28 Jennmar Corporation Combination cable bolt system
JP3703899B2 (en) * 1996-01-23 2005-10-05 岡部株式会社 Anchor rust prevention device
US6023894A (en) * 1998-01-15 2000-02-15 Sorkin; Felix L. Anchor of a post-tension anchorage system with an improved cap connection
JP3931029B2 (en) * 2000-10-13 2007-06-13 サンスイエンジニアリング株式会社 Anchor head fixing device with spherical head adapter
US7541089B1 (en) * 2001-05-21 2009-06-02 Cortec Corporation Composition and method for preserving posttensioning cables in metal reinforced concrete structures
AUPR994002A0 (en) * 2002-01-11 2002-01-31 Fergusson, Jeffrey Robert A rock bolt
EP1514981A1 (en) * 2002-05-30 2005-03-16 Anderson Technology Corporation Stress end portion structure of prestressed concrete structure body and method of forming the stress end portion
DE20311950U1 (en) * 2003-08-02 2004-12-09 Dywidag-Systems International Gmbh Corrosion-protected tension member, in particular tendon for prestressed concrete
DE20314997U1 (en) 2003-09-27 2004-01-08 Dywidag-Systems International Gmbh Corrosion-protected permanent ground anchor used for anchoring buildings and permanent rock anchor comprises tie rod consisting of two individual corrosion-protected partial tie rods combined by transition tube adjoining the anchoring
GB0418545D0 (en) * 2004-08-19 2004-09-22 Univ Aberdeen Improved anchorage head assembly
JP4577893B2 (en) * 2005-05-19 2010-11-10 岡部株式会社 Ground anchor head structure
EP1980712A1 (en) * 2007-04-13 2008-10-15 Lipsker & Partners Engineering Services (1975) Ltd Load cell for ground anchors

Also Published As

Publication number Publication date
KR20090082864A (en) 2009-07-31
AU2009200236A1 (en) 2009-08-13
CA2651242C (en) 2012-03-27
US20090191005A1 (en) 2009-07-30
US7967532B2 (en) 2011-06-28
CA2651242A1 (en) 2009-07-28
EP2085521A1 (en) 2009-08-05
AU2009200236B2 (en) 2014-06-19
ZA200900612B (en) 2009-12-30
DE202008001248U1 (en) 2008-03-27
JP2009174309A (en) 2009-08-06

Similar Documents

Publication Publication Date Title
EP2085521B1 (en) Soil or rock anchor with an anchor pull made of one or more individual elements with corrosion protected anchor head design
DE60017433T2 (en) CONNECTION DEVICE
DE69714610T2 (en) (GUIDE) POST WITH DESIRED BREAK IN THE ANCHORAGE
DE102012001109A1 (en) hybrid tower
DE10341401A1 (en) Composite device for a wood-concrete connection
EP0564889A1 (en) Connecting device, in particular for a tubular member
DE4210488A1 (en) Connector for tubular component - has expanding component engaged by bolt threaded over full length and has safety device to prevent screwing in too far
DE202009004831U1 (en) Building anchor and building anchor system
DE20005166U1 (en) Fastening device
WO2013178221A1 (en) Mounting system comprising ground anchor and multifunctional screwing aid
DE102019004829B4 (en) Support system for supporting part of a structure
DE19700280C2 (en) Formwork auxiliary part for a threaded sleeve
EP1847666A1 (en) Anchor device for tying of shuttering plates
DE102006041211A1 (en) Rotationally symmetric fastening device for profiled pipe, has thrust clamping unit mounted on stud-bolt such that distance change causes uniform diameter change of ring, where profiled pipe is tightly wound by diameter change
DE202019002916U1 (en) Support system for supporting a part of a structure
DE202019100898U1 (en) Wall dowel for a precast concrete element
DE9216182U1 (en) fitting
EP2416018A2 (en) Spacer
EP2497879B1 (en) Fixing of a monument board to a foundation
EP0152530B1 (en) Ground attaching device
DE10347536B4 (en) Anchoring a column slewing crane
EP2933401A1 (en) Installation for the tensioning of strand elements
DE3447414C2 (en)
EP1659223A1 (en) Guardrail arrangement
DE29500727U1 (en) Device for connecting a tension element to a reinforcing bar of a precast concrete element

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO SE SI SK TR

AX Request for extension of the european patent

Extension state: AL BA RS

TPAC Observations by third parties

Free format text: ORIGINAL CODE: EPIDOSNTIPA

17P Request for examination filed

Effective date: 20100107

AKX Designation fees paid

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO SE SI SK TR

17Q First examination report despatched

Effective date: 20120110

GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

INTG Intention to grant announced

Effective date: 20150327

GRAS Grant fee paid

Free format text: ORIGINAL CODE: EPIDOSNIGR3

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO SE SI SK TR

REG Reference to a national code

Ref country code: GB

Ref legal event code: FG4D

Free format text: NOT ENGLISH

REG Reference to a national code

Ref country code: CH

Ref legal event code: EP

REG Reference to a national code

Ref country code: AT

Ref legal event code: REF

Ref document number: 745263

Country of ref document: AT

Kind code of ref document: T

Effective date: 20150915

REG Reference to a national code

Ref country code: IE

Ref legal event code: FG4D

Free format text: LANGUAGE OF EP DOCUMENT: GERMAN

REG Reference to a national code

Ref country code: DE

Ref legal event code: R096

Ref document number: 502009011453

Country of ref document: DE

REG Reference to a national code

Ref country code: CH

Ref legal event code: NV

Representative=s name: PATENTANWAELTE SCHAAD, BALASS, MENZL AND PARTN, CH

REG Reference to a national code

Ref country code: NO

Ref legal event code: T2

Effective date: 20150826

Ref country code: LT

Ref legal event code: MG4D

REG Reference to a national code

Ref country code: FR

Ref legal event code: PLFP

Year of fee payment: 8

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LV

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20150826

Ref country code: LT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20150826

Ref country code: FI

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20150826

REG Reference to a national code

Ref country code: NL

Ref legal event code: MP

Effective date: 20150826

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: PT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20151228

Ref country code: PL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20150826

Ref country code: SE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20150826

Ref country code: HR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20150826

Ref country code: ES

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20150826

Ref country code: IS

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20151226

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: NL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20150826

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20150826

Ref country code: CZ

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20150826

Ref country code: DK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20150826

Ref country code: EE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20150826

REG Reference to a national code

Ref country code: DE

Ref legal event code: R097

Ref document number: 502009011453

Country of ref document: DE

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: RO

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20150826

Ref country code: BE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20160131

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed

Effective date: 20160530

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SI

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20150826

Ref country code: LU

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20160114

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: MC

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20150826

REG Reference to a national code

Ref country code: IE

Ref legal event code: MM4A

REG Reference to a national code

Ref country code: FR

Ref legal event code: PLFP

Year of fee payment: 9

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20160114

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: MT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20150826

REG Reference to a national code

Ref country code: FR

Ref legal event code: PLFP

Year of fee payment: 10

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: HU

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT; INVALID AB INITIO

Effective date: 20090114

Ref country code: CY

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20150826

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20150826

Ref country code: TR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20150826

Ref country code: MK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20150826

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: BG

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20150826

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 20200127

Year of fee payment: 12

Ref country code: IT

Payment date: 20200123

Year of fee payment: 12

Ref country code: NO

Payment date: 20200129

Year of fee payment: 12

Ref country code: AT

Payment date: 20191219

Year of fee payment: 12

Ref country code: DE

Payment date: 20200129

Year of fee payment: 12

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: CH

Payment date: 20200131

Year of fee payment: 12

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 20200127

Year of fee payment: 12

REG Reference to a national code

Ref country code: DE

Ref legal event code: R119

Ref document number: 502009011453

Country of ref document: DE

REG Reference to a national code

Ref country code: NO

Ref legal event code: MMEP

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

REG Reference to a national code

Ref country code: AT

Ref legal event code: MM01

Ref document number: 745263

Country of ref document: AT

Kind code of ref document: T

Effective date: 20210114

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20210114

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: AT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20210114

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20210131

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LI

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20210131

Ref country code: NO

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20210131

Ref country code: CH

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20210131

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20210803

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20210114

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20210114