FR2541339A1 - Device for anchoring the ends of tensioned cables or bars - Google Patents

Device for anchoring the ends of tensioned cables or bars Download PDF

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Publication number
FR2541339A1
FR2541339A1 FR8302557A FR8302557A FR2541339A1 FR 2541339 A1 FR2541339 A1 FR 2541339A1 FR 8302557 A FR8302557 A FR 8302557A FR 8302557 A FR8302557 A FR 8302557A FR 2541339 A1 FR2541339 A1 FR 2541339A1
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FR
France
Prior art keywords
anchoring
bars
conical
cables
head
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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
FR8302557A
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French (fr)
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FR2541339B1 (en
Inventor
Jean-Pierre Augoyard
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.)
GTM ETS SA
GTM Entrepose SA
Original Assignee
GTM ETS SA
GTM Entrepose SA
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 GTM ETS SA, GTM Entrepose SA filed Critical GTM ETS SA
Priority to FR8302557A priority Critical patent/FR2541339B1/en
Publication of FR2541339A1 publication Critical patent/FR2541339A1/en
Application granted granted Critical
Publication of FR2541339B1 publication Critical patent/FR2541339B1/en
Expired legal-status Critical Current

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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
    • E04C5/122—Anchoring devices the tensile members are anchored by wedge-action

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Reinforcement Elements For Buildings (AREA)

Abstract

This device for anchoring the ends of tensioned cables or bars in suitable conical holes provided for this purpose in an anchoring head which itself rests, via a bearing plate, on the concrete of the structure in which these cables or bars are used, is of the type in which the anchoring is obtained by means of conical wedges, which are possibly notched. The anchoring head 3 and the bearing plate 4 on which it rests are arranged in such a way that the anchoring head is bound by the bearing plate on the concrete of the structure.

Description

On ancre communément, au moyen de clavettes coniques, éventuellement crantées, les extrémités des câbles ou barres sous tension dans des trous coniques appropriés prévus à cet effet dans une tête d'ancrage qui repose elle-même, par l'intermédiaire d'une plaque d'appui, sur le béton de l'ouvrage dans lequel ces câbles ou barres sont utilisés. One commonly anchors, by means of conical keys, possibly notched, the ends of the cables or bars under tension in suitable conical holes provided for this purpose in an anchoring head which rests itself, via a plate bearing, on the concrete of the structure in which these cables or bars are used.

La traction exercée par les extrémités de ces câbles ou barres sous tension engendre, par l'intermédiaire des clavettes coniques, sur les faces coniques des trous de la tête d'ancrage dans laquelle elles sont engagées, des efforts qui tendent à faire éclater celle-ci. The traction exerted by the ends of these cables or bars under tension generates, by means of the conical keys, on the conical faces of the holes of the anchoring head in which they are engaged, forces which tend to cause it to burst. this.

Pour pallier cet inconvénient, la présente invention a pour objet un dispositif d'ancrage des extrémités des câbles ou barres sous tension, au moyen de clavettes coniques engagées dans les trous coniques prévus à cet effet dans la tête d'ancrage, caractérisé en ce que la tête d'ancrage et la plaque d'appui sur laquelle elle repose sont agencées de façon que la tête d'ancrage soit frettée par la plaque d'appui sur le béton de l'ouvrage. To overcome this drawback, the present invention relates to a device for anchoring the ends of cables or bars under tension, by means of conical keys engaged in the conical holes provided for this purpose in the anchoring head, characterized in that the anchor head and the support plate on which it rests are arranged so that the anchor head is hooped by the support plate on the concrete of the structure.

Pour obtenir ce résultat, les faces latérales de la tête d'ancrage sont elles-mêmes coniques, avec une conicité dirigée dans le sens de la traction exercée sur les câbles ou barres, et la plaque d'appui sur le béton comporte elle-même un trou central conique, dans lequel peuvent être engagées les faces coniques de la tête d'ancrage ; un épaulement peut éventuellement être prévu au voisinage de la partie supérieure de la tête d'ancrage pour limiter son enfoncemert dans la plaque d'appui. To obtain this result, the lateral faces of the anchoring head are themselves conical, with a conicity directed in the direction of the traction exerted on the cables or bars, and the bearing plate on the concrete itself comprises a conical central hole, into which the conical faces of the anchoring head can be engaged; a shoulder may optionally be provided in the vicinity of the upper part of the anchoring head to limit its insertion into the support plate.

Un autre avantage < ie ce dispositif d'ancrage réside en ce que la tête d'ancrage, .lu lieu de reposer sur la partie supérieure de la plaque d'appui, est partiellement engagée dans le trou central de celle-ci, ce qui limite l'encombrement de ce dispositif d'ancrage. Another advantage <ie this anchoring device resides in that the anchoring head, instead of resting on the upper part of the support plate, is partially engaged in the central hole thereof, which limits the size of this anchoring device.

Le dessin annexé montre à titre d'exemple un mode de réalisation de la présente invention
La figure 1 est une vue en plan du dispositif d'ancrage.The accompanying drawing shows by way of example an embodiment of the present invention
Figure 1 is a plan view of the anchoring device.

La figure 2 est une vue en coupe faite suivant la ligne
II-II de la figure 1 avant mise sous tension des câbles ou barres.Figure 2 is a sectional view taken along the line
II-II of Figure 1 before energizing cables or bars.

La figure 3 est une vue analogue après mise sous tension des câbles ou barres. Figure 3 is a similar view after energizing the cables or bars.

Le dispositif représenté comporte sept câbles ou barres 1 émergeant du béton 2 de l'ouvrage dans lequel sont utilisés ces câbles ou barres de tension. Leur ancrage est assuré au moyen de la tête d'ancrage 3 supportée par la plaque 4 d'appui sur le béton ; à cet effet, cette tête d'ancrage comporte un nombre égal de trous coniques 5 dans chacun desquels peut être engagée l'extrémité d'un des câbles ou barres 1 ; l'ancrage est assuré par des clavettes coniques 6, engagées dans les trous coniques 5 de la tête d'ancrage 3, entre la surface extérieure de ces câbles ou barres et la surface intérieure de ces trous. The device shown comprises seven cables or bars 1 emerging from the concrete 2 of the structure in which these cables or tension bars are used. Their anchoring is ensured by means of the anchoring head 3 supported by the plate 4 bearing on the concrete; for this purpose, this anchoring head comprises an equal number of conical holes 5 in each of which can be engaged the end of one of the cables or bars 1; anchoring is ensured by conical keys 6, engaged in the conical holes 5 of the anchoring head 3, between the outer surface of these cables or bars and the inner surface of these holes.

La surface extérieure 7 de cette tête d'ancrage 3 est conique et la plaque d'appui 4 sur le béton 2 de l'ouvrage comporte elle-même un trou central conique 8 dans lequel peut être engagée la partie inférieure de la tête d'ancrage 3. The outer surface 7 of this anchor head 3 is conical and the support plate 4 on the concrete 2 of the structure itself has a conical central hole 8 in which the lower part of the head can be engaged. anchoring 3.

Lorsqu'une traction est exercée sur les câbles 1, elle est transmise à la tête d'ancrage 3 par les clavettes coniques 6 et cette tête d'ancrage s'enfonce dans le trou central de la plaque d'appui 4 ; cet enfoncement peut être limité par un épaulement 9 de la collerette 10 prévue à la partie supérieure de la tête d'ancrage 3, qui vient buter contre la face supérieure de la plaque d'appui 4 sur le béton comme le montre la figure 3. When traction is exerted on the cables 1, it is transmitted to the anchoring head 3 by the conical keys 6 and this anchoring head is inserted into the central hole of the support plate 4; this depression can be limited by a shoulder 9 of the flange 10 provided at the upper part of the anchoring head 3, which abuts against the upper face of the support plate 4 on the concrete as shown in FIG. 3.

I1 est bien entendu que le mode de réalisation de la présente invention qui a été décrit ci-dessus en référence au dessin annexé a éte donné à titre purement indicatif et nullement limitatif et que de nombreuses modifications peuvent être apportes sans qu'on s'écarte pour cela de la présente inven tion ; c'est ainsi notamment que bien que la tête d'ancrage et la plaque d'appui sur béton , qui ont été représentées comme étant circulaires, elles pourraient éventuellement être de toute autre forme, et notamment carrées ou rectangulaires.  It is understood that the embodiment of the present invention which has been described above with reference to the appended drawing has been given for information only and is in no way limitative and that numerous modifications can be made without departing from the scope. for this of the present invention; Thus, in particular, although the anchor head and the support plate on concrete, which have been shown to be circular, they could possibly be of any other shape, and in particular square or rectangular.

Claims (3)

REVENDICATIONS 1.- Dispositif d'ancrage des extrémités de câbles ou barres sous tension au moyen de clavettes coniques dans des trous coniques appropriés prévus à cet effet dans une tête d'ancrage qui repose elle-même, par l'intermédiaire d'une plaque d'appui, sur le béton de l'ouvrage dans lequel ces câbles ou barres sont utilisés, caractérisé en ce que la tête d'ancrage (3) et la plaque d'appui (4) sur laquelle elle repose sont agencées de façon que la tête d'ancrage soit frettée par la plaque d'appui sur le béton de l'ouvrage.  1.- Device for anchoring the ends of cables or bars under tension by means of conical keys in suitable conical holes provided for this purpose in an anchoring head which rests itself, by means of a plate d 'support, on the concrete of the structure in which these cables or bars are used, characterized in that the anchoring head (3) and the support plate (4) on which it rests are arranged so that the anchor head is hooped by the support plate on the concrete of the structure. 2.- Dispositif d'ancrage suivant la revendication 1, caractérise en ce que les faces latérales de la tête d'ancrage (3) sont elles-mêmes coniques, avec une conicité dirigée dans le sens de la traction exercée sur les câbles ou barres et la plaque d'appui (4) sur le béton (2) comporte elle-même un trou central conique (8), dans lequel peuvent être engagées les faces coniques (7) de la tête d'ancrage. 2. An anchoring device according to claim 1, characterized in that the lateral faces of the anchoring head (3) are themselves conical, with a taper directed in the direction of the traction exerted on the cables or bars and the support plate (4) on the concrete (2) itself comprises a conical central hole (8), in which the conical faces (7) of the anchoring head can be engaged. 3.- Dispositif d'ancrage suivant la revendication 2, caractérisé en ce qu'un épaulement (9) est prévu au voisinage de la partie supérieure de la tete d'ancrage pour limiter son enfoncement dans la plaque d'appui.  3. An anchoring device according to claim 2, characterized in that a shoulder (9) is provided in the vicinity of the upper part of the anchoring head to limit its penetration into the support plate.
FR8302557A 1983-02-17 1983-02-17 DEVICE FOR ANCHORING THE ENDS OF TENTED CABLES OR BARS Expired FR2541339B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR8302557A FR2541339B1 (en) 1983-02-17 1983-02-17 DEVICE FOR ANCHORING THE ENDS OF TENTED CABLES OR BARS

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR8302557A FR2541339B1 (en) 1983-02-17 1983-02-17 DEVICE FOR ANCHORING THE ENDS OF TENTED CABLES OR BARS

Publications (2)

Publication Number Publication Date
FR2541339A1 true FR2541339A1 (en) 1984-08-24
FR2541339B1 FR2541339B1 (en) 1985-08-02

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FR8302557A Expired FR2541339B1 (en) 1983-02-17 1983-02-17 DEVICE FOR ANCHORING THE ENDS OF TENTED CABLES OR BARS

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4819393A (en) * 1985-05-24 1989-04-11 Gtm-Entrepose Device for anchoring one end of at least one tensioned cable or bar, in particular for a prestressed concrete structure
US5596854A (en) * 1994-01-19 1997-01-28 Vsl International Ag Post-tensioning anchor head assembly
ES2651160A1 (en) * 2017-05-10 2018-01-24 Mk4 World Wide, S.L. LINEAR FLAT ANCHORS WITH DOUBLE WEDGE SYSTEM FOR POST TENSIONED CONCRETE SLABS (Machine-translation by Google Translate, not legally binding)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1237901A (en) * 1959-06-25 1960-08-05 Stup Procedes Freyssinet Improvements to anchoring devices for prestressing reinforcement
GB1006679A (en) * 1962-07-06 1965-10-06 Matazaemon Kimura Prestressed concrete anchoring device
FR1452219A (en) * 1965-07-28 1966-02-25 Stup Procedes Freyssinet Anchoring device for prestressing reinforcement
US3801067A (en) * 1970-08-19 1974-04-02 R Shorter Anchor head for post-stressed reinforced concrete structures

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1237901A (en) * 1959-06-25 1960-08-05 Stup Procedes Freyssinet Improvements to anchoring devices for prestressing reinforcement
GB1006679A (en) * 1962-07-06 1965-10-06 Matazaemon Kimura Prestressed concrete anchoring device
FR1452219A (en) * 1965-07-28 1966-02-25 Stup Procedes Freyssinet Anchoring device for prestressing reinforcement
US3801067A (en) * 1970-08-19 1974-04-02 R Shorter Anchor head for post-stressed reinforced concrete structures

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4819393A (en) * 1985-05-24 1989-04-11 Gtm-Entrepose Device for anchoring one end of at least one tensioned cable or bar, in particular for a prestressed concrete structure
US5596854A (en) * 1994-01-19 1997-01-28 Vsl International Ag Post-tensioning anchor head assembly
ES2651160A1 (en) * 2017-05-10 2018-01-24 Mk4 World Wide, S.L. LINEAR FLAT ANCHORS WITH DOUBLE WEDGE SYSTEM FOR POST TENSIONED CONCRETE SLABS (Machine-translation by Google Translate, not legally binding)

Also Published As

Publication number Publication date
FR2541339B1 (en) 1985-08-02

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