EP0153337A1 - Anchoring of free traction steel element of a construction part subjected to dynamic strength. - Google Patents

Anchoring of free traction steel element of a construction part subjected to dynamic strength.

Info

Publication number
EP0153337A1
EP0153337A1 EP84902907A EP84902907A EP0153337A1 EP 0153337 A1 EP0153337 A1 EP 0153337A1 EP 84902907 A EP84902907 A EP 84902907A EP 84902907 A EP84902907 A EP 84902907A EP 0153337 A1 EP0153337 A1 EP 0153337A1
Authority
EP
European Patent Office
Prior art keywords
anchor body
anchoring
ring
elements
tension elements
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP84902907A
Other languages
German (de)
French (fr)
Other versions
EP0153337B2 (en
EP0153337B1 (en
Inventor
Peter Matt
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.)
Losinger Holding AG
Original Assignee
Losinger AG
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Filing date
Publication date
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Application filed by Losinger AG filed Critical Losinger AG
Priority to AT84902907T priority Critical patent/ATE24222T1/en
Publication of EP0153337A1 publication Critical patent/EP0153337A1/en
Application granted granted Critical
Publication of EP0153337B1 publication Critical patent/EP0153337B1/en
Publication of EP0153337B2 publication Critical patent/EP0153337B2/en
Anticipated expiration legal-status Critical
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Classifications

    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C5/00—Reinforcing elements, e.g. for concrete; Auxiliary elements therefor
    • E04C5/08—Members specially adapted to be used in prestressed constructions
    • E04C5/12—Anchoring devices
    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
    • E01D19/00—Structural or constructional details of bridges
    • E01D19/14—Towers; Anchors ; Connection of cables to bridge parts; Saddle supports

Definitions

  • the invention is based on anchoring free-swinging steel tensile elements of a dynamically stressed component, which tensile elements are deflected twice in the anchoring area, with an anchor body with bores running parallel to one another, through which the tensile elements are guided and conical at their ends are anchored to the outward-opening spaces of the bores by means of clamping wedges, support means being provided to absorb deflection forces in the deflection area of the anchor body, against which the tension elements bear, and with an expansion ring for bundling the tension elements emerging from the anchor body holes and passing through the expansion ring.
  • CH-PS 541 693 tries to eliminate these disadvantages.
  • support means are inserted into the deflection area of the armature body, against which the wires rest.
  • these support means center the wires relative to the anchor body in a predetermined position.
  • the support means are inserted in the spaces between the wires and the respective bore wall and fill these spaces.
  • the support means consist of a material that is softer than the material of the wires and / or the anchor body. With this measure, the friction at the deflection points of the wires is reduced in order to largely avoid breakage of friction and corrosion. The friction and the
  • the most commonly used solution consists in filling the anchoring area in a force-fitting manner with rods, wires or strands of a suspension cable.
  • potting anchoring is discussed in DE-OS 26 14 821.
  • a casting compound made of fine zinc or zinc alloys is provided, which has properties that prevent fretting corrosion.
  • the function of such backfilling is to gradually remove the force of the rods, wires or strands so that they no longer reach the deflection point on the support plate, or are weakened in a harmless manner. This measure in no way increases the vibration resistance of the rods, the wires or the strands.
  • the anchorages described in the last two publications relate only to the deflecting forces which arise in the region of an anchor body or a support plate and in no way solve problems caused by those acting on the second deflecting point Deflection forces, where the individual tension elements are bundled into one link, are caused.
  • the object of the invention specified in patent claim 1 was to provide anchoring of freely oscillating tension elements made of steel of a dynamically stressed component, which makes it possible that the tension elements passing through the bores of the anchor body are not exposed to any friction, whereby the force is transmitted to the clamps by means of which the tension elements are anchored in the bores of the anchor body.
  • the deflection forces at the first deflection point are thus to be eliminated.
  • the deflection forces at the second deflection point, where the tension elements converge to form a bundle are also to be eliminated.
  • the object is achieved with an anchoring according to the preamble of claim 1 by the features of the characterizing part of claim 1.
  • the diameter of each hole is advantageously 2 to 5 mm larger than that of the tension elements.
  • 1 is a view, partly in longitudinal section, of an anchoring with twice deflected tension elements.
  • FIG. 2 shows a partial longitudinal section of another embodiment of the anchoring on a larger scale, in which only the anchor body is shown with a tension element
  • FIG. 3 shows a side view of a perforated, elastically flexible washer according to FIG. 1,
  • FIG. 4 shows a partial longitudinal section of a still further embodiment, in which the anchor body is partially shown only with a bore and a tension element carried through it, and
  • Fig. 5 shows a partial longitudinal section of yet another
  • B. is a free-swinging suspension cable of a cable-stayed bridge, is fanned out on its end to be anchored in individual traction elements 4 (rods, wires or licens).
  • the part of the tension member to be anchored is arranged in a tubular guide sleeve 8.
  • the guide sleeve 8 can consist of plastic or sheet steel and is intended for concreting.
  • the end parts of the tension elements 4 are carried out through mutually parallel bores 2 of an anchor body 1. With the anchor body 1, a clamping ring 7 is screwed, which in turn is welded to the guide sleeve 8.
  • the anchor body 1 is usually made of steel.
  • the bores 2 have conically opening spaces 2a, into which clamping wedges 3 are inserted, by means of which the end parts of the tension elements 4 are anchored to the anchor body 1.
  • the diameter D of each bore 2 in its section 2c, which extends from the conically opening space 2a to approximately to the outlet end 2b, is constant and larger than that d_ of the tension element 4.
  • the diameter D of each bore 2 is around 2 to 5 mm larger than that d of the tension elements 4.
  • oscillatable support means made of a material that is softer than the material of the anchor body 1 or the tension elements 4 lying against the support means 4 are provided.
  • the support means are only provided in the area of the outlet ends 2b.
  • the support means can, as can be seen from the figures, consist of one each, in a circular recess 11 in the wall of the
  • the elastically flexible ring 5, 13, 14 exist, which resonates with the tension element 4.
  • the rings 5, 13, 14 are advantageously glued to the wall of the circular recess 11.
  • the elastically flexible ring 5, 13, 14 can have the shape of a polygon, trapezoid or a circle.
  • the support means can consist of a perforated, resiliently flexible disk 6 which is held on the anchor body 1 by means of the clamping ring 7 on the exit side of the bores 2, abutting the end face of the anchor body.
  • the holes 12 of the disk 6 are aligned with the bores 2 of the anchor body 1, so that the tension elements 4 emerging from the anchor body bores 2 pass through the holes 12.
  • the perforated edges of the disk 6 lie closely against the tension elements 4. The disc 6 thus vibrates with the tension elements 4 passing through its holes 12.
  • Tension elements act as deflection forces.
  • the expansion ring has an insert 10 resting on the tension elements 4 on its surface facing the tension elements 4.
  • the material of the insert 10 is softer than that of the expansion ring 9 or the tension elements 4.

Abstract

Les éléments de traction (4) d'un tirant en acier sont ancrés à leurs extrémités au moyen de coins de serrage (3) dans des perçages (2) parallèles d'un corps d'ancrage (1). Le diamètre (D) de chaque perçage (2) dans sa section (2c) est constant et plus grand que le diamètre (d) de l'élément de traction (4). On a prévu dans le corps d'ancrage (1) à l'endroit où les éléments de traction changent de direction un anneau (5) souple élastique absorbant les forces de déviation. Cet anneau (5) est logé dans un évidement circulaire (11) de la paroi de sortie (2b) de chaque perçage (2). Dans la zone de changement de direction de l'anneau d'écartement (9), à l'endroit où les éléments de traction forment un faisceau, on a prévu une garniture (10) en matière plus tendre que celle de l'anneau d'écartement (9) ou des éléments de traction (4). De même la matière de l'anneau (5) est plus tendre que celle du corps d'ancrage (1) ou des éléments de traction (4). Par ces dispositions on éliminera les forces dues aux déviations des éléments de traction (4) agissant sur ces derniers aussi bien au premier qu'au second endroit de changement de direction.The traction elements (4) of a steel tie rod are anchored at their ends by means of clamping wedges (3) in holes (2) parallel to an anchoring body (1). The diameter (D) of each hole (2) in its section (2c) is constant and larger than the diameter (d) of the traction element (4). There is provided in the anchoring body (1) at the place where the traction elements change direction a flexible elastic ring (5) absorbing the deflection forces. This ring (5) is housed in a circular recess (11) of the outlet wall (2b) of each bore (2). In the change of direction zone of the spacer ring (9), at the place where the traction elements form a bundle, a lining (10) made of softer material than that of the ring d has been provided. 'spacing (9) or traction elements (4). Similarly, the material of the ring (5) is softer than that of the anchoring body (1) or of the traction elements (4). By these provisions, the forces due to deflections of the traction elements (4) acting on the latter will be eliminated both at the first and at the second place of change of direction.

Description

Verankerung von freischwingenden Zugelementen aus Stahl eines dynamisch beanspruchten BauteilesAnchoring free-swinging steel tension elements of a dynamically stressed component
Die Erfindung geht aus von einer Verankerung von freischwingenden Zugelementen aus Stahl eines dynamisch beanspruchten Bauteiles, welche Zugelemente im Veran¬ kerungsbereich zweimal abgelenkt sind, mit einem Anker- körper mit zueinander parallel verlaufenden Bohrungen, durch welche die Zugelemente durchgeführt und an ihren Enden in sich konisch nach aussen öffnenden Räumen der Bohrungen mittels Klemmkeile verankert sind, wobei zwecks Aufnahme von Ablenkkräften im Ablenkbereich des Ankerkörpers Stützmittel vorgesehen sind, an welchen die Zugelemente anliegen, und mit einem Spreizring zum Bündeln der aus den Ankerkörperbohrungen austretenden und den Spreizring durchlaufenden Zugelemente.The invention is based on anchoring free-swinging steel tensile elements of a dynamically stressed component, which tensile elements are deflected twice in the anchoring area, with an anchor body with bores running parallel to one another, through which the tensile elements are guided and conical at their ends are anchored to the outward-opening spaces of the bores by means of clamping wedges, support means being provided to absorb deflection forces in the deflection area of the anchor body, against which the tension elements bear, and with an expansion ring for bundling the tension elements emerging from the anchor body holes and passing through the expansion ring.
Die Verankerung eines gespannten Zuggliedes für grosse Belastungen in einem Betonbauteil ist in der DE- OS 27 53 112 beschrieben. Der innerhalb des Betonbau¬ teiles liegende Teil des Zuggliedes hat keinen Verbund mit dem Betonbauteil, weil er von einem Umhüllungsrohr umgeben ist. Dieser Teil des Zuggliedes kann deshalb nach dem Entlasten und Lösen seiner Verankerung aus dem Betonbauteil entfernt werden. Dadurch wird eine spätere Auswechselbarkeit des Zuggliedes, das z. B. ein Schräg¬ seil einer Schrägseilbrücke ist, ermöglicht,- wenn das Schrägseil schadhaft geworden ist. Durch diese Lösung wird aber nicht der Bruchschaden durch auf die Schräg¬ seile wirkenden Ablenkkräfte beseitigt und die Schwin¬ gungsfestigkeit der Schrägseile nicht erhöht.The anchoring of a tensioned tension member for large loads in a concrete component is described in DE-OS 27 53 112. The part of the tension member located within the concrete component has no bond with the concrete component because it is surrounded by a sheathing tube. This part of the tension member can therefore be removed from the concrete component after relieving and releasing its anchoring. This will later replace the tension member, the z. B. a stay cable of a stay cable bridge is made possible - if the stay cable has become defective. However, this solution does not eliminate the breakage damage caused by deflecting forces acting on the stay cables and does not increase the vibration resistance of the stay cables.
Diese Nachteile versucht die Lehre nach der CH-PS 541 693 zu beseitigen. Zwecks Aufnahme der Ablenkkräfte der hinter dem Ankerkörper zu einem Bündel zusammenlau¬ fenden Drähte werden in Ablenkbereich des Ankerkörpers Stützmittel eingefügt, gegen welche die Drähte anliegen.The teaching of CH-PS 541 693 tries to eliminate these disadvantages. In order to absorb the deflection forces of the wires running behind the armature body into a bundle, support means are inserted into the deflection area of the armature body, against which the wires rest.
_Q WI - 2 -_Q WI - 2 -
Ausserdem zentrieren diese Stützmittel die Drähte ge¬ genüber dem Ankerkörper in einer vorbestimmten Lage. Zu diesem Zweck sind die Stützmittel in den Räumen zwischen den Drähten und der jeweiligen Bohrungswand eingefügt und füllen diese Räume aus. Die Stützmittel bestehen aus einem Material, das weicher ist als das Material der Drähte und/oder des Ankerkörpers. Durch diese Mass- nahme wird zwar die Reibung an den Ablenkstellen der Drähte herabgesetzt, um einen Reibungs- und Korrosions- bruch weitgehend zu vermeiden. Die Reibung und derIn addition, these support means center the wires relative to the anchor body in a predetermined position. For this purpose, the support means are inserted in the spaces between the wires and the respective bore wall and fill these spaces. The support means consist of a material that is softer than the material of the wires and / or the anchor body. With this measure, the friction at the deflection points of the wires is reduced in order to largely avoid breakage of friction and corrosion. The friction and the
Bruch werden aber nicht vollständig eliminiert, gerade aus dem Grunde, dass die Räume zwischen den Drähten und der jeweiligen Bohrungswand vollständig mit den Stütz¬ mitteln ausgefüllt sind und die Drähte dicht an den Bohrungswänden über die gesamte Länge der Bohrungen an¬ liegen, so dass sie nicht unbehindert schwingen können."However, breaks are not completely eliminated, precisely for the reason that the spaces between the wires and the respective bore wall are completely filled with the support means and the wires lie close to the bore walls over the entire length of the bores, so that they cannot swing freely. "
Die meistgebrauchte Lösung besteht in einer mit Stäben, Drähten oder Litzen eines Aufhängekabels kraft¬ schlüssig verbundenen Verfüllung des Verankerungsberei- ches. Eine solche Vergussverankerung ist in der DE-OS 26 14 821 erörtert. Im Bereich der Ablenkstelle an dem der Abstützplatte zugewandten Ende der Ankerhülle ist eine Vergussmasse aus Feinzink oder Zinklegierungen vorgesehen, die reibkorrosionsverhindernde Eigenschaf- ten aufweist. Die Funktion einer solchen Verfüllung be¬ steht darin, die Kraft der Stäbe, Drähte oder Litzen allmählich abzutragen, so dass sie die Ablenkstelle bei der Abstützplatte nicht mehr, oder auf ungefährliche Weise abgeschwächt, erreicht. Durch diese Massnahme wird keineswegs die Schwingungsfestigkeit der Stäbe, der Drähte bzw. der Litzen erhöht.The most commonly used solution consists in filling the anchoring area in a force-fitting manner with rods, wires or strands of a suspension cable. Such potting anchoring is discussed in DE-OS 26 14 821. In the area of the deflection point at the end of the anchor shell facing the support plate, a casting compound made of fine zinc or zinc alloys is provided, which has properties that prevent fretting corrosion. The function of such backfilling is to gradually remove the force of the rods, wires or strands so that they no longer reach the deflection point on the support plate, or are weakened in a harmless manner. This measure in no way increases the vibration resistance of the rods, the wires or the strands.
Die in den zwei letztgenannten Veröffentlichungen beschriebenen Verankerungen beziehen sich nur auf die im Bereich eines Ankerkörpers bzw. einer Abstützplatte entstehenden Ablenkkräfte und keineswegs Probleme lö¬ sen, die durch auf der zweiten Ablenkstelle wirkende Ablenkkräfte, wo die einzelnen Zugelemente zu einem Glied gebündelt werden, verursacht sind.The anchorages described in the last two publications relate only to the deflecting forces which arise in the region of an anchor body or a support plate and in no way solve problems caused by those acting on the second deflecting point Deflection forces, where the individual tension elements are bundled into one link, are caused.
Der im Patentanspruch 1 angegebenen Erfindung lag die Aufgabe zugrunde, eine Verankerung von frei schwin- genden Zugelementen aus Stahl eines dynamisch bean¬ spruchten Bauteiles zu schaffen, die es ermöglicht, dass die die Bohrungen des Ankerkörpers durchgehenden Zugelemente keiner Reibung ausgesetzt werden, wobei die Kraft auf die Klemmen übertragen wird, mittels welcher die Zugelemente in den Bohrungen des Ankerkörpers ver¬ ankert sind. Somit sollen die Ablenkkräfte auf der er¬ sten Ablenkstelle eliminiert werden. Desweiteren sollen auch die Ablenkkräfte auf der zweiten Ablenkstelle, wo die Zugelemente zu einem Bündel zusammenlaufen, eli i- niert werden.The object of the invention specified in patent claim 1 was to provide anchoring of freely oscillating tension elements made of steel of a dynamically stressed component, which makes it possible that the tension elements passing through the bores of the anchor body are not exposed to any friction, whereby the force is transmitted to the clamps by means of which the tension elements are anchored in the bores of the anchor body. The deflection forces at the first deflection point are thus to be eliminated. Furthermore, the deflection forces at the second deflection point, where the tension elements converge to form a bundle, are also to be eliminated.
Die Aufgabe wird bei einer Verankerung nach dem Oberbegriff des Patentanspruches 1 durch die Merkmale des kennzeichnenden Teiles des Patentanspruches 1 ge¬ löst. Mit Vorteil ist der Durchmesser jeder Bohrung um 2 bis 5 mm grösser als derjenige der Zugelemente.The object is achieved with an anchoring according to the preamble of claim 1 by the features of the characterizing part of claim 1. The diameter of each hole is advantageously 2 to 5 mm larger than that of the tension elements.
Der Erfindungsgegenstand wird nachstehend anhand der Zeichnung beispielsweise näher erläutert. Es zeigenThe subject matter of the invention is explained in more detail below with reference to the drawing, for example. Show it
Fig. 1 eine Ansicht teilweise im Längsschnitt ei- ner Verankerung mit zweimal abgelenkten Zugelementen,.1 is a view, partly in longitudinal section, of an anchoring with twice deflected tension elements.
Fig. 2 einen Teillängsschnitt einer anderen Aus¬ führungsform der Verankerung im grösseren Massstab, in welchem nur der Ankerkörper mit einem Zugelement darge¬ stellt ist, Fig. 3 eine Seitenansicht einer durchlöcherten, elastisch nachgiebigen Scheibe nach der Fig. 1,2 shows a partial longitudinal section of another embodiment of the anchoring on a larger scale, in which only the anchor body is shown with a tension element, FIG. 3 shows a side view of a perforated, elastically flexible washer according to FIG. 1,
Fig. 4 einen Teillängsschnitt einer noch weiteren Ausführungsform, in welchem der Ankerkörper teilweise nur mit einer Bohrung und einem durch sie durchgeführ- ten Zugelement dargestellt ist, und4 shows a partial longitudinal section of a still further embodiment, in which the anchor body is partially shown only with a bore and a tension element carried through it, and
Fig. 5 einen Teillängsschnitt einer noch weiterenFig. 5 shows a partial longitudinal section of yet another
O - 4 -O - 4 -
Ausführungsform, in welchem der Ankerkörper teilweise nur mit einer Bohrung und einem durch die Bohrung durchgeführten Zugelement dargestellt ist* Embodiment in which the anchor body is only partially shown with a bore and a tension element passed through the bore *
Das dargestellte Zugglied aus Stahl eines dyna- misch beanspruch*ten Bauteiles, welches Zugglied z. B. ein freischwingendes Aufhängekabel einer Schrägseil¬ brücke ist, ist auf seinem zu verankernden Ende in ein¬ zelne Zugelemente 4 (Stäbe, Drähte oder Lizen) aufge¬ fächert. Der zu verankernde Teil des Zuggliedes ist in einer rohrförmigen Führungshülle 8 angeordnet. Die Füh¬ rungshülle 8 kann aus Kunststoff oder Stahlblech beste¬ hen und ist zum Einbetonieren bestimmt. Die Endteile der Zugelemente 4 sind durch zueinander parallel ver¬ laufende Bohrungen 2 eines Ankerkörpers 1 durchgeführt. Mit dem Ankerkörper 1 ist ein Klemmring 7 verschraubt, der seinerseits mit der Führungshülle 8 verschweisst ist. Der Ankerkörper 1 besteht üblicherweise aus Stahl.The tension member shown in steel of a dynamically beanspruch * th component, for which tension member. B. is a free-swinging suspension cable of a cable-stayed bridge, is fanned out on its end to be anchored in individual traction elements 4 (rods, wires or licens). The part of the tension member to be anchored is arranged in a tubular guide sleeve 8. The guide sleeve 8 can consist of plastic or sheet steel and is intended for concreting. The end parts of the tension elements 4 are carried out through mutually parallel bores 2 of an anchor body 1. With the anchor body 1, a clamping ring 7 is screwed, which in turn is welded to the guide sleeve 8. The anchor body 1 is usually made of steel.
Die Bohrungen 2 weisen einerseits sich konisch nach aussen öffnende Räume 2a auf, in welche Klemmkei- le 3 eingesetzt sind, mittels welcher die Endteile der Zugelemente 4 am Ankerkörper 1 verankert sind. Der Durchmesser D jeder Bohrung 2 in ihrem Abschnitt 2c, der sich von dem sich konisch nach aussen öffnenden Raum 2a bis annähernd zum Austrittsende 2b erstreckt, ist gleichbleibend und grösser als derjenige d_ des Zug¬ elementes 4. Der Durchmesser D jeder Bohrung 2 ist um 2 bis 5 mm grösser als derjenige d der Zugelemente 4.On the one hand, the bores 2 have conically opening spaces 2a, into which clamping wedges 3 are inserted, by means of which the end parts of the tension elements 4 are anchored to the anchor body 1. The diameter D of each bore 2 in its section 2c, which extends from the conically opening space 2a to approximately to the outlet end 2b, is constant and larger than that d_ of the tension element 4. The diameter D of each bore 2 is around 2 to 5 mm larger than that d of the tension elements 4.
Zwecks Aufnahme von Ablenkkräften im Ablenkbereich des Ankerkörpers 1 sind schwingbare Stützmittel aus ei- ne Material vorgesehen, das weicher ist als das Mate¬ rial des Ankerkörpers 1 oder der gegen die Stützmittel anliegenden Zugelemente 4. Die Stützmittel sind nur im Bereich der Austrittsenden 2b vorgesehen. Das Stützmit¬ tel kann, wie aus den Fig. ersichtlich ist, aus jeweils einem, in einer Kreisaussparung 11 in der Wandung desIn order to absorb deflection forces in the deflection area of the anchor body 1, oscillatable support means made of a material that is softer than the material of the anchor body 1 or the tension elements 4 lying against the support means 4 are provided. The support means are only provided in the area of the outlet ends 2b. The support means can, as can be seen from the figures, consist of one each, in a circular recess 11 in the wall of the
Austrittsendes 2b jeder Bohrung 2 untergebrachten, ela- Outlet end 2b of each bore 2 housed, ela-
stisch nachgiebigen Ring 5, 13, 14 bestehen, der mit dem Zugelement 4 mitschwingt. Mit Vorteil sind die Rin¬ ge 5, 13, 14 an der Wandung der Kreisausnehmung 11 ver¬ leimt. Im Querschnitt kann der elastisch nachgiebige Ring 5, 13, 14 die Form eines Mehreckes, «ines Trapezes oder eines Kreises haben.flexible ring 5, 13, 14 exist, which resonates with the tension element 4. The rings 5, 13, 14 are advantageously glued to the wall of the circular recess 11. In cross section, the elastically flexible ring 5, 13, 14 can have the shape of a polygon, trapezoid or a circle.
Anstelle der Ringe 5, 13, 14 kann das Stützmittel aus einer durchlöcherten, elastisch nachgiebigen Schei¬ be 6 bestehen, die an der Austrittsseite der Bohrun- gen 2, an der Ankerkörperstirnseite anliegend, an dem Ankerkörper 1 mittels des Klemmringes 7 festgehalten ist. Die Löcher 12 der Scheibe 6 sind mit den Bohrun¬ gen 2 des Ankerkörpers 1 ausgerichtet, so dass die aus den Ankerkörperbohrungen 2 auftretenden Zugelemente 4 die Löcher 12 durchlaufen. Auch in diesem Fall, wie bei den Ringen 5, 13, 14, liegen die Lochränder der Schei¬ be 6 dicht an den Zugelementen 4 an. Somit schwingt die Scheibe 6 mit den ihre Löcher 12 durchlaufenden Zugele¬ menten 4 mit. Die aufgef cherten, verankerten Zugelemente 4, die aus den Ankerkörperbohrungen 2 austreten, laufen durch einen in der Führungshülle 8 angeordneten Spreizring 9, mittels welchen die Zugelemente 4 zu einem gebündelten, nicht dargestellten Zugglied zusammengefügt werden. Dies ist die zweite Ablenkstelle, in welcher auf die. Zugelemente Ablenkkräfte wirken. Zwecks Aufnahme der Ablenkkräfte auf dieser zweiten Ablenkstelle weist der Spreizring auf seiner den Zugelementen 4 zugewandten Fläche eine an den Zugelementen 4 anliegende Einlage 10 auf. Das Material der Einlage 10 ist weicher als dasje¬ nige des Spreizringes 9 oder der Zugelemente 4.Instead of the rings 5, 13, 14, the support means can consist of a perforated, resiliently flexible disk 6 which is held on the anchor body 1 by means of the clamping ring 7 on the exit side of the bores 2, abutting the end face of the anchor body. The holes 12 of the disk 6 are aligned with the bores 2 of the anchor body 1, so that the tension elements 4 emerging from the anchor body bores 2 pass through the holes 12. In this case too, as in the case of the rings 5, 13, 14, the perforated edges of the disk 6 lie closely against the tension elements 4. The disc 6 thus vibrates with the tension elements 4 passing through its holes 12. The fanned-out, anchored tension elements 4, which emerge from the anchor body bores 2, pass through an expansion ring 9 arranged in the guide sleeve 8, by means of which the tension elements 4 are joined to form a bundled tension element, not shown. This is the second deflection point at which. Tension elements act as deflection forces. For the purpose of absorbing the deflection forces on this second deflection point, the expansion ring has an insert 10 resting on the tension elements 4 on its surface facing the tension elements 4. The material of the insert 10 is softer than that of the expansion ring 9 or the tension elements 4.
Es ist bekannt, dass z. B. bei einer Oberspannung von 50 % der Nennzugfestigkeit der hochwertigen Stahl¬ drähte oder Litzen eines Aufhängekabels Schwingbreiten erzielt werden, die grösser oder gleich 200 N/mm sind. Dies führt dazu, dass sich die Drähte bzw. Litzen oder - 6 -It is known that e.g. B. With an upper tension of 50% of the nominal tensile strength of the high-quality steel wires or strands of a suspension cable, vibration widths that are greater than or equal to 200 N / mm can be achieved. This leads to the wires or strands or - 6 -
Stäbe in den Ankerkörperbohrungen, durch welche sie durchgeführt sind, gegen die BohrlochWandungen, in Richtung der Drahtbündelachse anpressen und beim Aus¬ tritt aus dem Ankerkδrper einen Knick bilden. Dasselbe betrifft die zweite Ablenkstelle im Bereich des Spreiz¬ ringes. Solche Knicke führen dann zu einer ganz erheb¬ lichen Abminderung der Schwingfestigkeit und endlich zum Bruch der Drähte bzw. der Litzen oder der Stäbe an den Ablenkstellen. Durch den freien Raum zwischen den Zugelementen und den Bohrungwandungen im Ankerkörper wird demgegenüber erreicht, dass die Zugelemente keiner Reibung unterworfen sind, wobei die Zugkraft 100 %ig direkt auf die Klemmen übertragen wird. Durch die oben beschriebenen Massnahmen wird die Schwingungsfestigkeit und somit die Lebensdauer der Zugelemente sowohl in der ersten Ablenkstelle am Ankerkörper als auch in der zweiten Ablenkstelle am Spreizring wesentlich erhöht. Press the rods in the anchor body bores through which they are passed against the borehole walls in the direction of the wire bundle axis and form a kink as they emerge from the anchor body. The same applies to the second deflection point in the area of the expansion ring. Such kinks then lead to a very considerable reduction in the fatigue strength and finally to the breakage of the wires or the strands or the rods at the deflection points. By contrast, the free space between the tension elements and the bore walls in the anchor body means that the tension elements are not subjected to any friction, the tensile force being transmitted 100% directly to the terminals. The measures described above significantly increase the vibration resistance and thus the service life of the tension elements both in the first deflection point on the anchor body and in the second deflection point on the expansion ring.

Claims

PATENTANSPRÜCHE PATENT CLAIMS
1. Verankerung von freischwingenden Zugelemen¬ ten (4) aus Stahl eines dynamisch beanspruchten Bautei¬ les, welche Zugelemente (4) im Verankerungsbereich zweimal abgelenkt sind, mit-einem Ankerkörper (1) mit zueinander parallel verlaufenden Bohrungen (2), durch welche die Zugelemente (4) durchgeführt und an ihren Enden in sich konisch nach aussen öffnenden Räumen (2a) der Bohrungen (2) mittels Klemmkeile (3) verankert sind, wobei zwecks Aufnahme von Ablenkkräften im Ab- lenkbereich des Ankerkörpers (1) Stützmittel vorgesehen sind, an welchen die Zugelemente (4) anliegen und mit einem Spreizring (9) zum Bündeln der aus den Anker¬ körperbohrungen (2) austretenden und den Spreizring (9) durchlaufenden Zugelemente (4), dadurch gekennzeichnet, dass der Durchmesser (D) jeder Bohrung (2) im Ab¬ schnitt (2c) von dem sich konisch nach aussen öffnenden Raum (2a) bis annähernd zum Austrittsende (2b) gleich¬ bleibend und grösser ist als derjenige (d) des Zugele¬ mentes (4), dass die Stützmittel als schwingbare Stütz- mittel (5, 13, 14, 6) nur im Bereich der Austrittsen¬ den (2b) vorgesehen sind, und dass der Spreizring (9) auf seiner den Zugelementen (4) zugewandten Fläche eine an den Zugelementen (4) anliegende Einlage (10) auf¬ weist, die aus einem weicheren Material besteht als dasjenige des Spreizringes (9) oder der Zugelemen¬ te (4).1. Anchoring free-swinging steel tension elements (4) of a dynamically stressed component, which tension elements (4) are deflected twice in the anchoring area, with an anchor body (1) with mutually parallel bores (2) through which the Tension elements (4) are carried out and anchored at their ends in conically outwardly opening spaces (2a) of the bores (2) by means of clamping wedges (3), support means being provided in the deflection area of the anchor body (1) to absorb deflection forces, to which the tension elements (4) rest and with an expansion ring (9) for bundling the tension elements (4) emerging from the anchor body bores (2) and passing through the expansion ring (9), characterized in that the diameter (D) of each bore (2) in section (2c) from the conically opening space (2a) to approximately to the outlet end (2b) is constant and larger than that (d) of the pulling element (4) that the support means are provided as oscillatable support means (5, 13, 14, 6) only in the area of the outlet ends (2b), and that the expansion ring (9) on its surface facing the pulling elements (4) has a connection to the pulling elements (4) 4) adjacent insert (10), which consists of a softer material than that of the expansion ring (9) or the Zugelemen¬ te (4).
2. Verankerung nach Patentanspruch 1, dadurch ge¬ kennzeichnet, dass der Durchmesser (D) jeder Boh¬ rung (2) um 2 bis 5 mm grösser ist als derjenige (d) der Zugelemente (4). _ 8 _2. Anchoring according to claim 1, characterized ge indicates that the diameter (D) of each hole (2) is 2 to 5 mm larger than that (d) of the tension elements (4). _ 8th _
3. Verankerung nach Patentanspruch.1 , dadurch ge¬ kennzeichnet, dass die Stützmittel jeweils einen in ei¬ ner Kreisausnehmung (11) in der Wandung des Austrittsen¬ des (2b) jeder Bohrung (2) untergebrachten, elastisch nachgiebigen Ring (5, 13, 14) umfassen, der mit dem Zugelement (4) mitschwingt.3. Anchoring according to Patent Claim 1, characterized in that the supporting means each have an elastically flexible ring (5, 13) accommodated in a circular recess (11) in the wall of the outlet end (2b) of each bore (2) , 14), which resonates with the tension element (4).
4. Verankerung nach Patentanspruch 1, dadurch ge¬ kennzeichnet, dass die Stützmittel eine durchlöcherte, elastisch nachgiebige Scheibe (6) umfassen, die an der Austrittsseite der Bohrungen (2) an der Ankerkδrper- stirnseite anliegend an dem Ankerkörper (1) mittels ei¬ nes Klemmringes (7) festgehalten ist"und mit den ihre Löcher (12) durchlaufenden Zugelementen (4) mitschwingt.4. Anchoring according to claim 1, characterized ge indicates that the support means comprise a perforated, resiliently flexible disc (6) which, on the outlet side of the bores (2) on the end face of the anchor body, rests on the anchor body (1) by means of an egg Nes clamping ring (7) is held " and with the holes (12) traversing elements (4) resonates.
5. Verankerung nach Patentanspruch 3, dadurch ge- kennzeichnet, dass jeder elastisch nachgiebige Ring (5,5. Anchoring according to claim 3, characterized in that each resilient ring (5,
13, 14) im Querschnitt mehreck-, trapez- oder kreisför¬ mig ist.13, 14) is polygonal, trapezoidal or circular in cross-section.
QMP QMP
EP84902907A 1983-08-22 1984-08-15 Anchoring of free traction steel element of a construction part subjected to dynamic strength Expired - Lifetime EP0153337B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT84902907T ATE24222T1 (en) 1983-08-22 1984-08-15 ANCHORING OF FREE-SPANING STEEL TENSION ELEMENTS OF A DYNAMICALLY STRESSED COMPONENT.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH4567/83A CH662595A5 (en) 1983-08-22 1983-08-22 ANCHORING OF FREELY SWINGING STEEL ELEMENTS OF A DYNAMICALLY STRESSED COMPONENT.
CH4567/83 1983-08-22

Publications (3)

Publication Number Publication Date
EP0153337A1 true EP0153337A1 (en) 1985-09-04
EP0153337B1 EP0153337B1 (en) 1986-12-10
EP0153337B2 EP0153337B2 (en) 1991-09-25

Family

ID=4278496

Family Applications (1)

Application Number Title Priority Date Filing Date
EP84902907A Expired - Lifetime EP0153337B2 (en) 1983-08-22 1984-08-15 Anchoring of free traction steel element of a construction part subjected to dynamic strength

Country Status (18)

Country Link
US (1) US4592181A (en)
EP (1) EP0153337B2 (en)
JP (1) JPS60156849A (en)
AT (1) ATE24222T1 (en)
AU (1) AU577305B2 (en)
BR (1) BR8407028A (en)
CA (1) CA1226749A (en)
CH (1) CH662595A5 (en)
DE (1) DE3461668D1 (en)
DK (1) DK152066C (en)
ES (1) ES293240Y (en)
IN (1) IN161218B (en)
IT (1) IT1179065B (en)
MX (1) MX168404B (en)
MY (1) MY100102A (en)
PT (1) PT79111B (en)
WO (1) WO1985001080A1 (en)
ZA (1) ZA846389B (en)

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FR2592666B1 (en) * 1986-01-07 1988-03-11 Sogelerg SUPPORT SYSTEM BY FLEXIBLE CABLE WITH LOCAL BUILT-IN, ESPECIALLY FOR BRIDGE BRIDGES
FR2613815B1 (en) * 1987-04-10 1989-06-23 Bouygues Offshore TENSILE STEEL TUBE, PARTICULARLY FOR PRODUCING ANCHORING LINES FOR TENSION LINE TYPE PRODUCTION PLATFORMS, PROCESS FOR HANDLING AND SETTING UP SUCH A TUBE, AND PLATFORM COMPRISING SUCH A TUBE
FR2623551B1 (en) * 1987-11-25 1992-04-24 Freyssinet Int Stup IMPROVEMENTS ON SURFACES AND THEIR COMPONENTS
CH683850A5 (en) * 1991-07-10 1994-05-31 Keller Paul Ingb Ag Anchoring element.
JP2693700B2 (en) * 1993-06-16 1997-12-24 鹿島建設株式会社 Method for fixing carbon fiber reinforced plastic strands
JP3035901B2 (en) * 1994-08-29 2000-04-24 住友電気工業株式会社 Fixing member and fixing section of PC steel strand
DE29504739U1 (en) * 1995-03-20 1995-05-18 Dyckerhoff & Widmann Ag Corrosion-protected tension member, primarily external tendon for prestressed concrete without bond
DE19801786A1 (en) * 1998-01-19 1999-07-29 Suspa Spannbeton Gmbh Anchor system for tensioners and anchors in prestressed concrete construction
FR2794484B1 (en) * 1999-06-03 2001-08-03 Freyssinet Int Stup DEVICE FOR ANCHORING A STRUCTURAL CABLE
CN102154861B (en) * 2011-04-11 2012-10-10 江苏法尔胜新日制铁缆索有限公司 Ultrahigh fatigue stress amplitude resistant steel cable
GB2514621B (en) * 2013-05-31 2020-04-15 Vsl Int Ag Cable anchorage
DE102013215136A1 (en) * 2013-08-01 2015-02-05 Dywidag-Systems International Gmbh Corrosion-protected tension member and plastically deformable disc made of anti-corrosion material for such a tension member
CN103388379B (en) * 2013-08-06 2016-02-10 天津鑫坤泰预应力专业技术有限公司 A kind of finished steel strand bundle
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Also Published As

Publication number Publication date
CH662595A5 (en) 1987-10-15
BR8407028A (en) 1985-07-30
JPS60156849A (en) 1985-08-17
MY100102A (en) 1989-10-10
IN161218B (en) 1987-10-17
AU577305B2 (en) 1988-09-22
ES293240Y (en) 1988-09-16
ATE24222T1 (en) 1986-12-15
EP0153337B2 (en) 1991-09-25
DK152066C (en) 1988-06-06
PT79111A (en) 1984-09-01
DK152066B (en) 1988-01-25
DK174685A (en) 1985-04-18
AU3216184A (en) 1985-03-29
MX168404B (en) 1993-05-24
US4592181A (en) 1986-06-03
JPH0336088B2 (en) 1991-05-30
EP0153337B1 (en) 1986-12-10
ZA846389B (en) 1985-03-27
PT79111B (en) 1986-06-03
DE3461668D1 (en) 1987-01-22
IT8467836A1 (en) 1986-02-21
IT1179065B (en) 1987-09-16
CA1226749A (en) 1987-09-15
ES293240U (en) 1988-01-16
IT8467836A0 (en) 1984-08-21
DK174685D0 (en) 1985-04-18
WO1985001080A1 (en) 1985-03-14

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