EP0015895B1 - Tension bolt for anchoring construction elements in a foundation body - Google Patents

Tension bolt for anchoring construction elements in a foundation body Download PDF

Info

Publication number
EP0015895B1
EP0015895B1 EP19800890029 EP80890029A EP0015895B1 EP 0015895 B1 EP0015895 B1 EP 0015895B1 EP 19800890029 EP19800890029 EP 19800890029 EP 80890029 A EP80890029 A EP 80890029A EP 0015895 B1 EP0015895 B1 EP 0015895B1
Authority
EP
European Patent Office
Prior art keywords
sleeve
screw threads
anchor rod
thread
pitch
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.)
Expired
Application number
EP19800890029
Other languages
German (de)
French (fr)
Other versions
EP0015895A1 (en
Inventor
Dominik Voigt
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.)
EDARCO European Development and Research Co Ltd
Original Assignee
EDARCO European Development and Research Co Ltd
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 EDARCO European Development and Research Co Ltd filed Critical EDARCO European Development and Research Co Ltd
Publication of EP0015895A1 publication Critical patent/EP0015895A1/en
Application granted granted Critical
Publication of EP0015895B1 publication Critical patent/EP0015895B1/en
Expired legal-status Critical Current

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
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH 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
    • E21D21/0033—Anchoring-bolts for roof, floor in galleries or longwall working, or shaft-lining protection characterised by constructional features of the bolts having a jacket or outer tube

Definitions

  • the invention relates to a tie rod for anchoring components in a base body, e.g. Rock, brick, concrete body, among other things, in which an anchor rod is arranged within a sleeve attached to the anchoring mass on the mountain side, the sleeve having an internal thread on its inner side facing the anchor rod, the anchor rod having an external thread on its outer side facing the sleeve its mountain-side end is closed, the internal thread of the sleeve, at least at the closed end, has a larger pitch than the threads of the anchor rod and the threads of the anchor rod sit with play in the thread grooves of the sleeve.
  • Rock and earth anchors are used in tunneling, earthworks and mining and are used to hold earthworks, formwork, etc.
  • Such an anchor for anchoring components in the ground or rock has become known from DE-A-2 557 978.
  • This anchor consists of a round rod, which is provided with an external thread and forms the tension member, and which is screwed into a threaded tube which is designed as a sleeve and is to be held in the anchoring compound.
  • the pitches of the threads of the tension member and the threaded tube are the same, with lubricant being introduced in between. With this anchor, all threads are loaded evenly.
  • a disadvantage of this anchor is that it is unsuitable for high loads.
  • the invention proposes a tie rod of the type specified at the beginning, in which, according to the invention, the pitch of the internal thread of the sleeve is greatest at the closed end thereof, gradually decreases towards the open end and to half to two thirds of the length the pitch of the thread of the anchor rod is the same.
  • the sleeve including the external and internal thread, is designed as an unprocessed casting made of aluminum or gray cast iron.
  • the sleeve is preferably provided with a wedge-shaped cutting edge at its closed end.
  • the tie rod has a sleeve 1, which as a casting made of metal, preferably aluminum or gray cast iron, has a cylindrical base body 4, on the outside of which an external thread 3 and on the inside of which an internal thread 2 is provided, so that the external diameter of the internal thread «d» is smaller than the inside diameter of the external thread, and the difference between the two diameters corresponds to the actual wall thickness --a-- of the base body 4 of the sleeve 1.
  • the external thread 3 is sawtooth-shaped, so that the surface 5, which is essentially perpendicular to the axis of the sleeve, faces outwards in the installed state of the sleeve 1 and the inclined surface 6 is directed inwards, as a result of which a high resistance to tensile action in the direction of Arrow A is given.
  • the threads of the external thread 3 are close to one another, while the internal thread 2 is provided with a larger pitch, so that there is a distance -b- between the individual threads. To prevent notch stresses, the inner flank outlets of the external thread can be rounded.
  • the sleeve 1 is open at one end and closed at its other end in a wedge-shaped cutting edge 10.
  • the anchor rod 7, which is screwed into the sleeve 1, has an external thread 8 corresponding to the internal thread 2, which is designed as a so-called mammoth thread, the threads of which, as can be seen in FIG. 3, only extend over part of the surface and on run diametrically opposite points in the lateral surface, so that two axially extending, diametrically opposite, smooth lateral surfaces 9 are formed.
  • the height --H-- of the thread grooves 12 of the sleeve 1 must be greater than the height "h" of the threads 13 of the anchor rod 7, so that the threads 13 of the anchor rod 7 have a play in the thread grooves 12 of the sleeve 1 .
  • This tolerance can be a few tenths of a millimeter, e.g. 0.2 mm.
  • This tolerance preferably extends to at least half, expediently two thirds of the sleeve length and is continuously smaller and smaller, so that the slope at the closed sleeve end is greatest, and gradually decreases to the normal slope in half or two thirds of the length, so that at the end of this length there is a normal slope, that is to say the slope corresponding to the slope of the thread 8 of the anchor rod 7.
  • an adhesive cartridge is first inserted into a rock hole, whereupon the sleeve 1 is inserted into the hole and driven in by a hammer blow so that it destroys the adhesive cartridge with the cutting edge 10, as a result of which the adhesive encloses the sleeve end .
  • the adhesive is pressed progressively between the gears of the external thread 3, or driven through it, so that when the sleeve 1 is completely sunk in the rock, the adhesive all Has penetrated threads, and after hardening causes the sleeve to be firmly anchored in the rock.
  • the anchor rod 7 is screwed into the sleeve 1 fastened in this way.
  • the sleeve 1 according to the invention can be dimensioned such that it can be found with a relatively small amount of the adhesive, which is expensive per se.
  • Plastic adhesives with high strength are primarily used as adhesives. But there is also the possibility of using other masses, which give the required anchoring strength.

Description

Die Erfindung betrifft einen Zuganker zur Verankerung von Bauteilen in einem Grundkörper, z.B. Fels, Ziegel, Betonkörper u.a., bei dem innerhalb einer bergseitig in einer Verankerungsmasse angebrachten Hülse ein Ankerstab angeordnet ist, wobei die Hülse an ihrer dem Ankerstab zugewandten Innenseite ein Innengewinde aufweist, der Ankerstab an seiner der Hülse zugewandten Aussenseite ein Aussengewinde aufweist, die Hülse an ihrem bergseitigen Ende geschlossen ist, das Innengewinde der Hülse zumindest am geschlossenen Ende eine gegenüber den Gewindegängen des Ankerstabes grössere Steigung aufweist und die Gewindegänge des Ankerstabes in den Gewindenuten der Hülse mit Spiel sitzen. Fels- und Erdanker werden im Tunnel-, Erd- und Bergbau verwendet und dienen zum Festhalten von Erdbauten, Schalungen u.a. Durch die DE-A-2 557 978 ist ein solcher Anker zur Verankerung von Bauteilen im Erdreich oder Fels bekanntgeworden. Dieser Anker besteht aus einem mit Aussengewinde versehenen, das Zugglied bildenden Rundstab, welcher in ein in der Verankerungsmasse festzuhaltendes, als Hülse ausgebildetes Gewinderohr eingeschraubt wird. Bei diesem Rohr sind die Steigungen der Gewinde des Zuggliedes und des Gewinderohres gleich, wobei dazwischen Schmiermasse eingebracht ist. Bei diesem Anker sind alle Gewindegänge im wesentlichen gleichmässig belastet. Ein Nachteil dieses Ankers besteht darin, dass er für hohe Belastungen ungeeignet ist.The invention relates to a tie rod for anchoring components in a base body, e.g. Rock, brick, concrete body, among other things, in which an anchor rod is arranged within a sleeve attached to the anchoring mass on the mountain side, the sleeve having an internal thread on its inner side facing the anchor rod, the anchor rod having an external thread on its outer side facing the sleeve its mountain-side end is closed, the internal thread of the sleeve, at least at the closed end, has a larger pitch than the threads of the anchor rod and the threads of the anchor rod sit with play in the thread grooves of the sleeve. Rock and earth anchors are used in tunneling, earthworks and mining and are used to hold earthworks, formwork, etc. Such an anchor for anchoring components in the ground or rock has become known from DE-A-2 557 978. This anchor consists of a round rod, which is provided with an external thread and forms the tension member, and which is screwed into a threaded tube which is designed as a sleeve and is to be held in the anchoring compound. In this tube, the pitches of the threads of the tension member and the threaded tube are the same, with lubricant being introduced in between. With this anchor, all threads are loaded evenly. A disadvantage of this anchor is that it is unsuitable for high loads.

Durch die FR-A-1 390 986 ist bekanntgeworden, zur Erzielung einer grösseren, gleichmässigeren Belastung der Gewindegänge einer Schraubverbindung die Steigung an einem Ende des Innengewindes der hülsenartigen Elemente unterschiedlich zu gestalten, und zwar mit zum unteren Ende grösser werdender Steigung.From FR-A-1 390 986 it has become known that, in order to achieve a larger, more uniform load on the threads of a screw connection, the pitch at one end of the internal thread of the sleeve-like elements is designed differently, with a slope increasing towards the lower end.

Die dem Oberbegriff des Anspruchs 1 am nächsten kommende FR-A-2 077 000 beschreibt eine Schraubverbindung, bei welcher das Innengewinde der Mutter grössere Steigung aufweist als das Aussengewinde der Schraube, des Zugbolzens od.dgl. und zwischen den Gewindenuten der Mutter und den Gewindegängen des Zugbolzens ein Axialspiel vorgesehen ist. Dadurch sollte erzielt werden, dass bei Zugbeanspruchung des Bolzens, sei es durch die Belastung des Bolzens oder durch eine Vorspanneinrichtung, infolge der Dehnung des im Muttergewinde sitzenden Bolzens alle Gewindegänge zum Tragen kommen.The closest to the preamble of claim 1 FR-A-2 077 000 describes a screw connection in which the internal thread of the nut has a greater pitch than the external thread of the screw, the draw bolt or the like. and an axial play is provided between the thread grooves of the nut and the threads of the draw bolt. The aim of this was to ensure that when the bolt is subjected to tensile stress, whether due to the load on the bolt or due to a pretensioning device, all threads become effective due to the expansion of the bolt seated in the nut thread.

Um das Tragen aller Gewindegänge auch in vergleichsweise langem Muttergewinde zu erreichen, hätten aber sehr hohe Zugspannungen auf den Bolzen zur Einwirkung gebracht werden müssen, u.zw. Zugspannungen, die die zulässige Spannung des Bolzenmaterials erreichen, gegebenenfalls aber auch hätten überschreiten müssen. Es wäre hierbei denkbar, den Gangunterschied möglichst klein zu machen, um mit geringeren Zugbeanspruchungen das Auslangen finden zu können. Dabei ist aber zu berücksichtigen, dass jede Verringerung des Gangunterschiedes eine Erhöhung der bei der Produktion erforderlichen Genauigkeit notwendig macht, womit naturgemäss die Produktionskosten steigen. Derartigen Vorgangsweisen sind schon aus wirtschaftlichen Gründen Grenzen gesetzt.In order to achieve the wearing of all threads even in a comparatively long nut thread, very high tensile stresses would have to be applied to the bolt, etc. Tensile stresses that reach the permissible tension of the bolt material, but which should also have exceeded it. It would be conceivable to make the path difference as small as possible in order to be able to cope with lower tensile loads. However, it should be borne in mind that any reduction in the path difference necessitates an increase in the accuracy required in production, which naturally increases production costs. Such procedures are already limited for economic reasons.

Diese bekannte Schraubverbindung war daher eher nachteilig.This known screw connection was therefore rather disadvantageous.

Zur Vereinfachung der Schraubverbindung sowie zur Herabsetzung der Produktionskosten schlägt die Erfindung einen Zuganker der eingangs angegebenen Art vor, bei welchem erfindunsgemäss die Steigung des Innengewindes der Hülse am geschlossenen Ende derselben am grössten ist, sich zum offenen Ende hin allmählich verringert und auf halber bis zweidrittel Länge der Steigung des Gewindes des Ankerstabes gleich ist.To simplify the screw connection and to reduce the production costs, the invention proposes a tie rod of the type specified at the beginning, in which, according to the invention, the pitch of the internal thread of the sleeve is greatest at the closed end thereof, gradually decreases towards the open end and to half to two thirds of the length the pitch of the thread of the anchor rod is the same.

Zur Herstellung eines solchen Verlaufes des Hülsengewindes ist hohe Präzision nur über einen Teil der Länge des Hülsengewindes erforderlich, eben in jenem Abschnitt, in welchem die Steigung sich ändert. Aber auch bei einer solchen Schraubverbindung wird gleichmässiges Tragen einer grösseren Anzahl von Gewindegängen als bei üblichen Schrauben mit konstanter Gewindesteigung erzielt, jedoch bei wesentlich geringerer Belastung oder Vorspannung als bei der Verbindung gemäss der FR-A-2 077 000.To produce such a course of the sleeve thread, high precision is only required over part of the length of the sleeve thread, precisely in the section in which the pitch changes. However, even with such a screw connection, a larger number of thread turns is achieved evenly than with conventional screws with a constant thread pitch, but with a much lower load or pretension than with the connection according to FR-A-2 077 000.

Nach einem weiteren Merkmal der Erfindung ist die Hülse einschliesslich des Aussen- und des Innengewindes als unbearbeitetes Gussstück aus Aluminium oder Grauguss ausgebildet. Vorzugsweise ist die Hülse an ihrem geschlossenen Ende mit einer keilförmigen Schneide versehen.According to a further feature of the invention, the sleeve, including the external and internal thread, is designed as an unprocessed casting made of aluminum or gray cast iron. The sleeve is preferably provided with a wedge-shaped cutting edge at its closed end.

Weitere Einzelheiten der Erfindung werden an Hand der Zeichnung näher erläutert, in welcher ein Ausführungsbeispiel des erfindungsgemässen Zugankers dargestellt ist. Es zeigen

  • Fig. 1 einen Längsschnitt der Hülse,
  • Fig. 2 eine Seitenansicht des Ankerstabes,
  • Fig. 3 einen Querschnitt desselben und
  • Fig. 4 einen Querschnitt einer abgeänderten Form der Hülse mit eingesetztem Ankerstab.
Further details of the invention are explained in more detail with reference to the drawing, in which an embodiment of the tie rod according to the invention is shown. Show it
  • 1 shows a longitudinal section of the sleeve,
  • 2 is a side view of the anchor rod,
  • Fig. 3 shows a cross section of the same and
  • Fig. 4 shows a cross section of a modified form of the sleeve with an inserted anchor rod.

Der Zuganker besitzt eine Hülse 1, welche als Gussstück aus Metall, vorzugsweise Aluminium oder Grauguss hergestellt, einen zylinderischen Grundkörper 4 besitzt, auf dessen Aussenseite ein Aussengewinde 3 und auf dessen Innenseite ein Innengewinde 2 vorgesehen ist, so dass der Aussendurchmesser des Innengewindes «d» kleiner als der Innendurchmesser des Aussengewindes ist, und die Differenz zwischen den beiden Durchmessern der eigentlichen Wandstärke --a-- des Grundkörpers 4 der Hülse 1 entspricht. Das Aussengewinde 3 ist sägezahnartig ausgebildet, so dass die im wesentlichen lotrecht zur Achse der Hülse gelegene Fläche 5 im eingebauten Zustand der Hülse 1 nach aussen und die schräge Fläche 6 nach innen gerichtet ist, wodurch ein hoher Widerstand gegen Zugwirkung in der Richtung des Pfeiles A gegeben ist. Die Gewindegänge des Aussengewindes 3 schliessen eng aneinander an, während das Innengewinde 2 mit grösserer Steigung versehen ist, so dass zwischen den einzelnen Gewindegängen ein Abstand --b- vorhanden ist. Zur Verhinderung von Kerbspannungen können die inneren Flankenausläufe des Aussengewindes abgerundet sein. Die Hülse 1 ist an ihrem einen Ende offen und an ihrem anderen Ende in eine keilförmige Schneide 10 auslaufend verschlossen.The tie rod has a sleeve 1, which as a casting made of metal, preferably aluminum or gray cast iron, has a cylindrical base body 4, on the outside of which an external thread 3 and on the inside of which an internal thread 2 is provided, so that the external diameter of the internal thread «d» is smaller than the inside diameter of the external thread, and the difference between the two diameters corresponds to the actual wall thickness --a-- of the base body 4 of the sleeve 1. The external thread 3 is sawtooth-shaped, so that the surface 5, which is essentially perpendicular to the axis of the sleeve, faces outwards in the installed state of the sleeve 1 and the inclined surface 6 is directed inwards, as a result of which a high resistance to tensile action in the direction of Arrow A is given. The threads of the external thread 3 are close to one another, while the internal thread 2 is provided with a larger pitch, so that there is a distance -b- between the individual threads. To prevent notch stresses, the inner flank outlets of the external thread can be rounded. The sleeve 1 is open at one end and closed at its other end in a wedge-shaped cutting edge 10.

Der Ankerstab 7, welcher in die Hülse 1 eingeschraubt wird, besitzt ein dem Innengewinde 2 entsprechendes Aussengewinde 8, welches als sogenanntes Mammutgewinde ausgebildet ist, dessen Gewindegänge sich, wie der Fig. 3 zu entnehmen ist, nur über einen Teil der Oberfläche erstrecken und an diametral gegenüberliegenden Stellen in die Mantelfläche auslaufen, so dass zwei axial verlaufende, diametral gegenüberliegende, glatte Mantelflächen 9 entstehen. Um zu verhindern, dass bei Toleranzen des Innengewindes der Hülse 1 und des Aussengewindes des Ankerstabes 7 bei Zugbelastung desselben nur die nahe dem äusseren Ende der Hülse 1 gelegenen Gewindegänge die Gesamtlast aufnehmen, wodurch das Hülsenende abgerissen werden könnte, ist in vorteilhafter Weise die Steigung des Innengewindes 2 der Hülse 1 am geschlossenen Ende derselben um eine geringe Toleranz grösser als für den Ankerstab 7 gedacht wäre, wodurch, wie der Fig. 4 zu entnehmen ist, auf jeden Fall die innersten Gewindegänge 10, 11 zum Tragen kommen und die Last auf die gesamte Hülsenlänge übertragen wird. Zu diesem Zwecke muss die Höhe --H-- der Gewindenuten 12 der Hülse 1 grösser als die Höhe «h» der Gewindegänge 13 des Ankerstabes 7 sein, so dass die Gewindegänge 13 des Ankerstabes 7 in den Gewindenuten 12 der Hülse 1 ein Spiel haben. Diese Toleranz kann wenige Zehntel Millimeter, z.B. 0,2 mm betragen. Vorzugsweise erstreckt sich diese Toleranz auf mindestens die halbe, zweckmässig zwei drittel der Hülsenlänge und ist fortlaufend immer kleiner, so dass die Steigung am geschlossenen Hülsenende am grössten ist, und sich allmählich bis zur normalen Steigung in der halben bzw. zwei drittel Länge verringert, so dass am Ende dieser Länge eine normale Steigung, das heisst die der Steigung des Gewindes 8 des Ankerstabes 7 entsprechende Steigung vorhanden ist.The anchor rod 7, which is screwed into the sleeve 1, has an external thread 8 corresponding to the internal thread 2, which is designed as a so-called mammoth thread, the threads of which, as can be seen in FIG. 3, only extend over part of the surface and on run diametrically opposite points in the lateral surface, so that two axially extending, diametrically opposite, smooth lateral surfaces 9 are formed. In order to prevent tolerances of the internal thread of the sleeve 1 and the external thread of the anchor rod 7 when the same is subjected to tensile load, only the threads located near the outer end of the sleeve 1 absorb the total load, which could tear off the sleeve end, is advantageously the slope of the Internal thread 2 of the sleeve 1 at the closed end of the same by a small tolerance larger than would be intended for the anchor rod 7, whereby, as can be seen from FIG. 4, the innermost threads 10, 11 come into effect and the load on the entire sleeve length is transmitted. For this purpose, the height --H-- of the thread grooves 12 of the sleeve 1 must be greater than the height "h" of the threads 13 of the anchor rod 7, so that the threads 13 of the anchor rod 7 have a play in the thread grooves 12 of the sleeve 1 . This tolerance can be a few tenths of a millimeter, e.g. 0.2 mm. This tolerance preferably extends to at least half, expediently two thirds of the sleeve length and is continuously smaller and smaller, so that the slope at the closed sleeve end is greatest, and gradually decreases to the normal slope in half or two thirds of the length, so that at the end of this length there is a normal slope, that is to say the slope corresponding to the slope of the thread 8 of the anchor rod 7.

Zur Befestigung des Ankerstabes 7 in einem Fels wird vorerst eine Kleberpatrone in eine Felsbohrung eingebracht, worauf die Hülse 1 in die Bohrung eingesetzt und durch einen Hammerschlag so weit eingetrieben wird, dass sie mit der Schneide 10 die Kleberpatrone zerstört, wodurch der Kleber das Hülsenende umschliesst. Durch weiteres Eintreiben oder Einschrauben der Hülse 1 in die Felsbohrung mittels eines von einer Bohrmaschine angetriebenen Setzgerätes wird der Kleber fortschreitend zwischen die Gänge des Aussengewindes 3 gepresst, bzw. durch diese nach vorne getrieben, so dass bei gänzlich im Fels versenkter Hülse 1 der Kleber alle Gewindegänge durchdrungen hat, und nach dem Erhärten eine feste Verankerung der Hülse im Fels bewirkt. In die so befestigte Hülse 1 wird der Ankerstab 7 eingeschraubt.To fix the anchor rod 7 in a rock, an adhesive cartridge is first inserted into a rock hole, whereupon the sleeve 1 is inserted into the hole and driven in by a hammer blow so that it destroys the adhesive cartridge with the cutting edge 10, as a result of which the adhesive encloses the sleeve end . By further driving or screwing the sleeve 1 into the rock hole by means of a setting tool driven by a drilling machine, the adhesive is pressed progressively between the gears of the external thread 3, or driven through it, so that when the sleeve 1 is completely sunk in the rock, the adhesive all Has penetrated threads, and after hardening causes the sleeve to be firmly anchored in the rock. The anchor rod 7 is screwed into the sleeve 1 fastened in this way.

Selbstverständlich können im Rahmen der Erfindung verschiedene konstruktive Abänderungen vorgenommen werden. So besteht die Möglichkeit, anstelle des sägezahnartigen Aussengewindes 3 ein anderes Gewinde oder einfache Erhebungen vorzusehen, wodurch eine Verankerung in der Klebermasse erzielt wird. Auch kann anstelle der Vergrösserung der endseitigen Gewindesteigung eine Verringerung derselben gegenüber der des Ankerstabes 7 gewählt werden.Of course, various design changes can be made within the scope of the invention. So it is possible to provide a different thread or simple elevations instead of the sawtooth-like external thread 3, whereby anchoring in the adhesive mass is achieved. Instead of increasing the thread pitch at the end, a reduction thereof can be chosen compared to that of the anchor rod 7.

Die erfindunsgemässe Hülse 1 kann infolge ihrer bevorzugten Verankerungseigenschaften so bemessen sein, dass mit verhältnismässig geringer Menge des an sich teuren Klebemittels das Auslangen gefunden werden kann.Due to its preferred anchoring properties, the sleeve 1 according to the invention can be dimensioned such that it can be found with a relatively small amount of the adhesive, which is expensive per se.

Als Kleber werden vor allem Kunststoffkleber mit hoher Festigkeit verwendet. Es besteht aber auch die Möglichkeit, andere Massen zu verwenden, welche die erforderliche Verankerungsfestigkeit ergeben.Plastic adhesives with high strength are primarily used as adhesives. But there is also the possibility of using other masses, which give the required anchoring strength.

Claims (4)

1. A tie rod for anchoring parts of a structure in a base, such as rock, brick, concrete element and others, wherein an anchor rod (7) is disposed in a sleeve (1), which is fixed on the hillside in an anchoring composition and which on its inside surface facing the anchor rod has female screw threads, the anchor rod is provided with male screw threads on its outside surface facing the sleeve, the sleeve is closed at its hillside end, the female screw threads (2) of the sleeve (1) have at least at the closed end a larger pitch than the screw threads of the anchor rod and the thread ribs (13) of the anchor rod (7) extend into the thread grooves (12) of the sleeve (1) with clearances, characterized in that the pitch of the female screw threads (2) of the sleeve (1) is largest at its closed end and gradually decreases towards its open end and from the one-half to two-thirds points of the length of the sleeve (1) equals the pitch of the screw threads (8) of the anchor rod (7).
2. A tie rod according to claim 1, characterized in that the male screw threads (3) of the sleeve (1) have a smaller pitch than its female screw threads (2).
3. A tie rod according to claim 1, characterized in that the sleeve (1) inclusive of its male and female screw threads (3 and 2) consists of an unmachined casting of aluminium or cast iron.
4. A tie rod according to claim 3, characterized in that the sleeve (1) is provided at its closed end with a wedge-shaped knife edge (10).
EP19800890029 1979-03-05 1980-03-05 Tension bolt for anchoring construction elements in a foundation body Expired EP0015895B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AT1646/79 1979-03-05
AT0164679A AT364921B (en) 1979-03-05 1979-03-05 TIE ANCHOR FOR ANCHORING COMPONENTS IN A BASIC BODY

Publications (2)

Publication Number Publication Date
EP0015895A1 EP0015895A1 (en) 1980-09-17
EP0015895B1 true EP0015895B1 (en) 1983-07-20

Family

ID=3517917

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19800890029 Expired EP0015895B1 (en) 1979-03-05 1980-03-05 Tension bolt for anchoring construction elements in a foundation body

Country Status (3)

Country Link
EP (1) EP0015895B1 (en)
AT (1) AT364921B (en)
DE (1) DE3064188D1 (en)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3564005D1 (en) * 1985-01-17 1988-09-01 Weidmann H Ag Anchor for wall consolidation in cavity structures
DE3507732A1 (en) * 1985-03-05 1986-09-18 Dyckerhoff & Widmann AG, 8000 München TIE LINK FOR A ROCK BOLT OR THE LIKE
DE8708914U1 (en) * 1986-12-05 1987-10-29 Egco Ag, Saanen, Ch
WO1988005775A1 (en) * 1987-01-30 1988-08-11 Sandoz-Erfindungen Verwaltungsgesellschaft M.B.H. Novel xanthine derivatives
DE19740032C2 (en) * 1997-09-11 2000-04-27 Dyckerhoff & Widmann Ag Device for anchoring a rebar and method for anchoring a sealing base
WO2003071098A1 (en) * 2002-02-25 2003-08-28 Steffen, Robertson & Kirsten (South Africa) (Pty) Ltd And William David Ortlepp Rock bolt
KR100484021B1 (en) * 2002-10-18 2005-04-20 김국일 Removal-typed nailing apparatus for soil nailing construction method
CN104631454B (en) * 2015-01-29 2016-11-30 山东大学 A kind of reverse wedge formula recoverable anchor rod
CN109137903A (en) * 2018-09-06 2019-01-04 山东焱鑫矿用材料加工有限公司 A kind of non-cold working connection steel part with double rotational directions screw thread
CN109339840B (en) * 2018-11-13 2024-03-05 重庆大学 Anti-torsion large-deformation anchor rod
DE102022200441A1 (en) 2022-01-17 2023-07-20 Cbp Guideway Systems Gmbh Anchoring unit for anchoring in a borehole in a material, anchoring arrangement with such an anchoring unit and method for producing such an anchoring arrangement

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1323184A (en) * 1961-04-28 1963-04-05 Applic De Rech S Minieres Et I Self-drilling ankle enhancements
FR1390986A (en) * 1962-12-31 1965-03-05 Standard Pressed Steel Co Threading device, in particular with nut and bolt
CH544236A (en) * 1970-01-26 1973-11-15 Bieri Hans Screw connection
FR2248738A5 (en) * 1973-10-17 1975-05-16 Potier Claude Joining of concrete reinforcing rods - involves mild steel screwed adaptor formed onto ridged end of high tensile reinforcing rod
CH585820A5 (en) * 1974-12-24 1977-03-15 Stump Bohr Ag
DE2606095B1 (en) * 1976-02-16 1976-12-02 Dyckerhoff & Widmann Ag REMOVABLE INJECTOR ANCHOR WITH DESTRUCTIBLE ANCHOR BODY

Also Published As

Publication number Publication date
ATA164679A (en) 1981-04-15
DE3064188D1 (en) 1983-08-25
EP0015895A1 (en) 1980-09-17
AT364921B (en) 1981-11-25

Similar Documents

Publication Publication Date Title
DE69920371T2 (en) Helical masonry anchor with raised anchorage
DE69822304T2 (en) ANCHORAGE DEVICE
EP3359828B1 (en) Thread moulding screw with separate thread spiral and different flank portion angles
DE2941769A1 (en) METHOD FOR SETTING ANCHOR BOLTS, ANCHOR BOLTS AND METHOD FOR THE PRODUCTION THEREOF
EP1892425A2 (en) Fastening element for hard substrates
DE2047482A1 (en) Thread forming screw
EP0068227A1 (en) Anchor bolt
EP2250380B1 (en) System comprising a composite anchor bolt and glue
EP0955476A2 (en) Self-tapping screw for insertion into construction elements
EP0015895B1 (en) Tension bolt for anchoring construction elements in a foundation body
DE10110001A1 (en) Nut for anchoring bolts in mine strata has first internally threaded section and second, deformable threaded section, forming discontinuity in first thread
DE4041765A1 (en) Threaded dowel with cylindrical externally threaded casing - has hollow cylindrical or conical body with cylindrical interior, and has hexagonal head
DE19938363A1 (en) Screw anchor
EP1397601B1 (en) Shear connector
EP2354567B1 (en) Connecting anchor screw
EP1975421B1 (en) Self-tapping screw
EP2354572B1 (en) Thread moulding screw
WO2012152237A1 (en) Composite anchor screw
DE3633628A1 (en) ANCHORING ELEMENT, IN PARTICULAR DOWEL
DE7706708U1 (en) Fastener
DE2164666A1 (en) Anchor bolts
DE8401123U1 (en) Form-fitting dowels for concrete
EP2728209B1 (en) Thread forming screw
DE3325800A1 (en) Adhesive anchor
EP0961041B1 (en) Compound anchor

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

Designated state(s): BE CH DE FR GB IT LU NL SE

17P Request for examination filed

Effective date: 19810309

ITF It: translation for a ep patent filed

Owner name: FUMERO BREVETTI S.N.C.

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Designated state(s): BE CH DE FR GB IT LU NL SE

REF Corresponds to:

Ref document number: 3064188

Country of ref document: DE

Date of ref document: 19830825

ET Fr: translation filed
PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 19840202

Year of fee payment: 5

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

Ref country code: FR

Payment date: 19840203

Year of fee payment: 5

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

Ref country code: CH

Payment date: 19840327

Year of fee payment: 5

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

Ref country code: LU

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

Effective date: 19840331

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

Ref country code: SE

Payment date: 19840331

Year of fee payment: 5

Ref country code: BE

Payment date: 19840331

Year of fee payment: 5

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

Ref country code: NL

Payment date: 19860331

Year of fee payment: 7

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

Ref country code: LU

Payment date: 19860404

Year of fee payment: 7

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

Ref country code: SE

Effective date: 19870306

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

Ref country code: CH

Effective date: 19870331

BERE Be: lapsed

Owner name: EDARCO EUROPEAN DEVELOPMENT AND RESEARCH CY LTD

Effective date: 19870331

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

Ref country code: NL

Effective date: 19871001

NLV4 Nl: lapsed or anulled due to non-payment of the annual fee
PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

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

Effective date: 19871130

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

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

Ref country code: DE

Effective date: 19871201

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

GBPC Gb: european patent ceased through non-payment of renewal fee
PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Effective date: 19881118

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

Ref country code: BE

Effective date: 19890331

EUG Se: european patent has lapsed

Ref document number: 80890029.4

Effective date: 19880215