EP0383870A1 - Anchorage piece, in particular for concrete. - Google Patents

Anchorage piece, in particular for concrete.

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Publication number
EP0383870A1
EP0383870A1 EP89908195A EP89908195A EP0383870A1 EP 0383870 A1 EP0383870 A1 EP 0383870A1 EP 89908195 A EP89908195 A EP 89908195A EP 89908195 A EP89908195 A EP 89908195A EP 0383870 A1 EP0383870 A1 EP 0383870A1
Authority
EP
European Patent Office
Prior art keywords
foot
anchor
rod
axis
support
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
EP89908195A
Other languages
German (de)
French (fr)
Other versions
EP0383870B1 (en
Inventor
Marcel Arteon
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.)
Individual
Original Assignee
Individual
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Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to AT89908195T priority Critical patent/ATE95872T1/en
Publication of EP0383870A1 publication Critical patent/EP0383870A1/en
Application granted granted Critical
Publication of EP0383870B1 publication Critical patent/EP0383870B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
    • E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
    • E04G21/14—Conveying or assembling building elements
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
    • E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
    • E04G21/14—Conveying or assembling building elements
    • E04G21/142—Means in or on the elements for connecting same to handling apparatus

Definitions

  • the present invention relates to an anchor for hardenable material and in particular for concrete, intended to be included in part in the concrete element, the other part remaining exterior to allow handling of the element. It relates in particular, but not exclusively, to an anchoring piece intended to be introduced into thin panels such as those found in prefabricated constructions.
  • the problem which is solved by the present invention is that of obtaining a point making it possible to exert tensile forces (lifting forces for example) on an element obtained by casting a material capable of hardening (concrete, plaster, etc.).
  • tensile forces lifting forces for example
  • an element obtained by casting a material capable of hardening concrete, plaster, etc.
  • several solutions have already been proposed, using a rod, or elongated element, having at its upper part a gripping means and, at its lower part, means for anchor.
  • a known type of anchor is shown in FIG. 1. It comprises a head A, a rod B, and a foot C whose diameter is greater than that of the rod. This insert makes the element work and. compression, that is to say that it transfers the tensile force to the foot of the anchor which determines a taper cone.
  • an eye anchor such as that which is represented, in front view, in FIG. 2, which also has a head A, a rod B and a foot D having an opening E for the passage of a frame.
  • Such an anchor makes it possible to obtain a connection between the head A and a reinforcement or reinforcing iron, passing through the eye E. The transfer of the tensile force to the mass of the panel then results from the adhesion of the reinforcements inside the panel.
  • anchors are also used, and in particular the so-called “carp tail” anchors, the rod of which is terminated at its base by the “carp tail”, present at its upper end, a hole for example allowing the introduction of a lifting hook, or a threaded rod or threaded tub.
  • the carp tail forms a sealing tab inside the material.
  • all of the known anchoring means have drawbacks or limits in use, in particular in the case of thin panels.
  • the tear-off cone cannot be formed properly and there are sometimes bursts F, or at least cracks at the top of the connection if the he thickness of the element is small.
  • EP-A-0 259 295 describes an anchor in which an eye is provided in the head of the anchor To facilitate the passage of a curved reinforcement, the lower internal surface of the hole is slightly curved. But the frame does not bear in the bottom of said orifice.
  • FR-A-2 072 873 relates to a plastic bush for example, intended to receive a metal stud and reinforcing bars penetrating inside recesses formed in the body of the bush. But there is no direct link between the stud and the reinforcement bars. In addition, the socket occupies a larger volume which is not filled with concrete which poses problems for thin panels and it can only be used with reinforcements.
  • the object of the present invention is to overcome the drawbacks mentioned above and to propose an anchor of a universal nature allowing work, either by compression alone, or by compression and adhesion, and therefore the length can be reduced compared to traditional anchors.
  • the anchoring piece for curable material comprising a gripping head, a rod having an axis of symmetry and a foot adhering to the material, the foot being of dimension greater than that of the rod, is characterized in that the foot comprises at least one support and guide ramp, hollowed out in its upper face, for a reinforcing iron.
  • the frame is held in position by the edges of the ramp and cannot slide during molding.
  • the section of the ramps is circular and the diameter of the grooves is substantially equal to the diameter of the reinforcement bars so that the range of the bars inside the ramps is optimal.
  • the base of the rod is pierced with at least one eye extending in a direction substantially perpendicular to the axis of the rod, the upper surface of the foot forming a curved support ramp , in line with the opening of the eye.
  • the ramp (or the ramps) is eccentric relative to the axis of the rod. It is thus possible to bring together on one anchor foot two or more reinforcing bars.
  • An anchor according to the invention can be used, either without reinforcing iron, the material of the element working under compression, or with reinforcing iron resting inside the ramp, which ensures suitable mechanical transmission. forces applied to the anchor, for example during handling.
  • FIG. 5 a distinction is made between the lower end of the implant 1 which, in the example shown, consists of a cylindrical rod pierced with an eye 2 and terminated immediately below the eye 2 by a foot 3. Inside the eye passes a reinforcing iron 4 which is inserted, during assembly, in a groove or support ramp 5 in which the iron is perfectly guided and maintained.
  • the foot 3 can be partially hollowed out as shown in 6.
  • the anchor head not shown can be any and allows the anchor to be taken up by a suitable lifting device. It has thus been noted that the anchor according to the present invention works simultaneously when a frame has passed inside the eye 2, by compression and by adhesion of the concrete, or more generally of the constituent of the element.
  • FIG. 7 shows a view over the device shown in FIG. 5, and it can be seen that the iron 4 is perfectly guided by the ramp 5.
  • the length of the implant provided with one or more orifices for reinforcing bars, and support ramps, is sufficient in relation to the physical characteristics of the constituents of the element, it is possible to remove the reinforcing bars, the support ramps 5 then forming an anchorage by penetration of the material inside said ramps.
  • the implant according to the invention can be either full, and obtained by molding, forging or machining, or hollow and essentially constituted by a tube as shown in Figures 8 and 9.
  • the upper end of the rod 1 can present for example a tapped hole 8
  • the foot of the anchor 3 is constituted by a development 9 of the tube which, as before, supports the frame 4 over a sufficient part of its length, this frame 4 passing, as previously , by the eye 2.
  • the curvature of the opening 9 is such that it corresponds exactly to the curvature of the iron 4 in order to maintain it perfectly when a traction is applied to the bush 1.
  • Figures 10 and 11 show respectively, in front view and in side view, the anchoring in a thin panel.
  • an anchor such as that shown in Figure 6 allowing the passage of two frames 4a and 4b extending in two parallel vertical planes.
  • the head 7 protrudes inside a reservation 10 provided in the panel 11.
  • the frames 4a and 4b can always extend in two parallel planes, at different angles, the two support ramps 5 having identical or different curvatures. A better distribution of the reinforcing bars is thus obtained inside the panel, which increases safety.
  • Figures 12, 13 and 14 show another embodiment of an anchor foot 3, in which the ramps 5 offset from the rod 1 can be straight or inclined as required. That is to say that the planes containing the axes X of the ramps are either parallel to the axis of the anchor, or inclined with respect to this axis.
  • an implant with two reinforcing bars these can be fixed in the implant by crimping for example, which gives a rigid assembly, easy to arrange, before the component of the panel is cast.
  • the implant with several passage ramps makes it possible to diffuse the forces of the element, which is advantageous, especially if the resistance is very low, for example when the concrete has not yet taken its resistance to final compression.
  • a very short implant with several reinforcing bars created for handling very thin slabs can also be used on the edge of the elements for lifting and vertical handling.
  • the support ramps 5 can be, in one or two pieces, added to the implant by crimping, welding or even produced by deformation of the piece.
  • the anchoring parts according to the invention can be obtained by known manufacturing methods and they can be either in one piece, or include elements added by welding or braiding, and, in particular, the foot provided with its ramps can be attached to a forged rod.
  • the conical shape of the foot particularly when the latter is hollowed out since the material then enters the recess, makes it possible to counterbalance the lateral forces which can be applied by a machine, when lifting a panel.
  • a welded connection for example, between the implant and the reinforcing iron can eliminate any articulation, which limits cracks during lifting.

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Mechanical Engineering (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Joining Of Building Structures In Genera (AREA)
  • Reinforcement Elements For Buildings (AREA)

Abstract

Pièce d'ancrage pour matériau durcissable tel que du béton ou du plâtre, comprenant une tige de préhension et un pied de section supérieure à celle de la tige. Le pied (3) comporte au moins une rampe d'appui (5) creusée dans sa partie supérieure et destinée à maintenir une armature ou fer de renfort (4) de manière à solidariser l'ensemble pièce d'ancrage-armature.Anchor for hardenable material such as concrete or plaster, comprising a gripping rod and a foot of section greater than that of the rod. The foot (3) comprises at least one support ramp (5) hollowed out in its upper part and intended to maintain a reinforcement or reinforcing iron (4) so as to secure the whole anchor-armature piece.

Description

PIECE D'ANCRAGE NOTAMMENT POUR BETON ANCHORING PART, PARTICULARLY FOR CONCRETE
La présente invention a pour objet une pièce d'ancrage pour matériau durcissable et notamment pour béton, destinée à être incluse en partie dans l'élément en béton, l'autre partie restant extérieure pour permettre la manutention de l'élément. Elle vise en particulier, mais non exclusivement, une pièce d'ancrage destinée à être introduite dans des panneaux de faible épaisseur tels que ceux que l'on trouve dans les constructions préfabriquées.The present invention relates to an anchor for hardenable material and in particular for concrete, intended to be included in part in the concrete element, the other part remaining exterior to allow handling of the element. It relates in particular, but not exclusively, to an anchoring piece intended to be introduced into thin panels such as those found in prefabricated constructions.
Le problème qui est résolu par la présente invention est celui de l'obtention d'un point permettant d'exercer des efforts de traction (efforts de levage par exemple) sur un élément obtenu par coulée d'un matériau capable de durcir (béton, plâtre, etc.). Afin de reporter les forces de traction sur ce point d'ancrage, plusieurs solutions ont déjà été proposées, faisant appel à une tige, ou élément longiligne, présentant à sa partie supérieure un moyen de préhension et, à sa partie inférieure, des moyens d'ancrage. Une ancre de type connu est représentée sur la figure 1. Elle comporte une tête A, une tige B, et un pied C dont le diamètre est supérieur à celui de la tige. Cet insert fait travailler l'élément et. compression, c'est-à-dire qu'il reporte l'effort de traction sur le pied de l'ancre qui détermine un cône d'arrachement. Une autre solution connue est une ancre à oeil telle que celle qui est représentée, en vue de face, sur la figure 2, qui présente également une tête A, une tige B et un pied D présentant une ouverture E pour le passage d'une armature. Une telle ancre permet d'obtenir une solidarisation entre la tête A et une armature ou fer de renfort, passant à travers l'oeil E. Le report de l'effort de traction sur la masse du panneau résulte alors de l'adhérence des armatures à l'intérieur du panneau.The problem which is solved by the present invention is that of obtaining a point making it possible to exert tensile forces (lifting forces for example) on an element obtained by casting a material capable of hardening (concrete, plaster, etc.). In order to transfer the tensile forces to this anchoring point, several solutions have already been proposed, using a rod, or elongated element, having at its upper part a gripping means and, at its lower part, means for anchor. A known type of anchor is shown in FIG. 1. It comprises a head A, a rod B, and a foot C whose diameter is greater than that of the rod. This insert makes the element work and. compression, that is to say that it transfers the tensile force to the foot of the anchor which determines a taper cone. Another known solution is an eye anchor such as that which is represented, in front view, in FIG. 2, which also has a head A, a rod B and a foot D having an opening E for the passage of a frame. Such an anchor makes it possible to obtain a connection between the head A and a reinforcement or reinforcing iron, passing through the eye E. The transfer of the tensile force to the mass of the panel then results from the adhesion of the reinforcements inside the panel.
D'autres ancres sont également utilisées, et notamment les ancres dites "à queue de carpe", dont la tige est terminée à sa base par la "queue de carpe", présente à son extrémité supérieure, un trou par exemple permettant l'introduction d'un crochet de levage, ou encore une tige filetée ou un tub taraudé. La queue de carpe constitue une patte de scellement l'intérieur du matériau. Mais, tous les moyens d'ancrag connus présentent des inconvénients ou des limites d'emploi, notamment dans le cas de panneaux de faible épaisseur.Other anchors are also used, and in particular the so-called "carp tail" anchors, the rod of which is terminated at its base by the "carp tail", present at its upper end, a hole for example allowing the introduction of a lifting hook, or a threaded rod or threaded tub. The carp tail forms a sealing tab inside the material. However, all of the known anchoring means have drawbacks or limits in use, in particular in the case of thin panels.
Dans le cas du fonctionnement par compression, comm représenté sur la figure 3, le cône d'arrachement ne peut pa se former convenablement et l'on note quelquefois de éclatements F, ou pour le moins des fissurations à la hauteu de la liaison si l'épaisseur de l'élément est faible.In the case of compression operation, as shown in FIG. 3, the tear-off cone cannot be formed properly and there are sometimes bursts F, or at least cracks at the top of the connection if the he thickness of the element is small.
Dans le cas de l'utilisation d'une ancre à oeil, représent sur la figure 4, le fer G de renfort se déforme et s'écrase lors de l'effort de levage avec modification de sa courbur provoquant son écrouissage et éventuellement sa rupture.In the case of the use of an eye anchor, represented in FIG. 4, the reinforcing iron G deforms and is crushed during the lifting effort with modification of its curvature causing its hardening and possibly its rupture .
EP-A-0 259 295 décrit une ancre dans laquelle un oeil es prévu dans la tête de l'ancre Pour faciliter le passage d'un armature courbe, la surface interne inférieure du trou es légèrement incurvée. Mais l'armature ne porte pas dans le fon dudit orifice.EP-A-0 259 295 describes an anchor in which an eye is provided in the head of the anchor To facilitate the passage of a curved reinforcement, the lower internal surface of the hole is slightly curved. But the frame does not bear in the bottom of said orifice.
FR-A-2 072 873 se rapporte à une douille en matière plastique par exemple, destinée à recevoir un goujon métallique et de fers de renforts pénétrant à l'intérieur d'évidements formé dans le corps de la douille. Mais il n'existe pas de liaiso directe entre le goujon et les fers de renfort. De plus, l douille occupe un volume plus important qui n'est pas rempl de béton ce qui pose des problèmes pour les panneaux minces Et elle ne peut être utilisée qu'avec des armatures.FR-A-2 072 873 relates to a plastic bush for example, intended to receive a metal stud and reinforcing bars penetrating inside recesses formed in the body of the bush. But there is no direct link between the stud and the reinforcement bars. In addition, the socket occupies a larger volume which is not filled with concrete which poses problems for thin panels and it can only be used with reinforcements.
La présente invention a pour objet de pallier le inconvénients mentionnés ci-dessus et de proposer une ancre caractère universel permettant un travail, soit pa compression seule, soit par compression et adhérence, et don la longueur peut être réduite par rapport aux ancre traditionnelles. Selon la présente invention, la pièce d'ancrage pour matériau durcissable comprenant une tête de préhension, une tige présentant un axe de symétrie et un pied adhérant au matériau, le pied étant de dimension supérieure à celle de la tige, est caractérisée en ce que le pied comporte au moins une rampe d'appui et de guidage, creusée dans sa face supérieure, pour un fer de renfort.The object of the present invention is to overcome the drawbacks mentioned above and to propose an anchor of a universal nature allowing work, either by compression alone, or by compression and adhesion, and therefore the length can be reduced compared to traditional anchors. According to the present invention, the anchoring piece for curable material comprising a gripping head, a rod having an axis of symmetry and a foot adhering to the material, the foot being of dimension greater than that of the rod, is characterized in that the foot comprises at least one support and guide ramp, hollowed out in its upper face, for a reinforcing iron.
Ainsi, l'armature est maintenue en position par les bords de la rampe et ne peut pas glisser au cours du moulage. La section des rampes est circulaire et, le diamètre des rainures est sensiblement égal au diamètre des fers de renforts pour que la portée des fers à l'intérieur des rampes soit optimale.Thus, the frame is held in position by the edges of the ramp and cannot slide during molding. The section of the ramps is circular and the diameter of the grooves is substantially equal to the diameter of the reinforcement bars so that the range of the bars inside the ramps is optimal.
Selon une autre caractéristique de l'invention, la base de la tige est percée d'au moins un oeil s' étendant dans une direction sensiblement perpendiculaire à l'axe de la tige, la surface supérieure du pied formant une rampe d'appui courbe, dans le prolongement de l'ouverture de l'oeil.According to another characteristic of the invention, the base of the rod is pierced with at least one eye extending in a direction substantially perpendicular to the axis of the rod, the upper surface of the foot forming a curved support ramp , in line with the opening of the eye.
Dans un autre mode de réalisation, la rampe (ou les rampes) est excentrée par rapport à l'axe de la tige. Il est ainsi possible de réunir sur un pied d'ancre deux ou plusieurs fers de renfort.In another embodiment, the ramp (or the ramps) is eccentric relative to the axis of the rod. It is thus possible to bring together on one anchor foot two or more reinforcing bars.
Une ancre selon l'invention peut être utilisée, soit sans fer de renfort, le matériau de l'élément travaillant à la compression, soit avec fer de renfort s'appuyant à l'intérieur de la rampe, ce qui assure une transmission mécanique convenable des efforts appliqués sur la pièce d'ancrage, par exemple lors des manutentions.An anchor according to the invention can be used, either without reinforcing iron, the material of the element working under compression, or with reinforcing iron resting inside the ramp, which ensures suitable mechanical transmission. forces applied to the anchor, for example during handling.
Il n'y a aucune déformation ni détérioration du fer de renfort, ni déplacement de l'implant par rapport au fer de renfort, ce qui évite les fissurations au niveau de la liaison. D'autres caractéristiques et avantages de l'invention apparaîtront au cours de la description qui va suivre de modes particuliers de réalisation, donnés uniquement à titre d'exemples non limitatifs, en regard des dessins qui représentent :There is no deformation or deterioration of the reinforcing iron, nor displacement of the implant relative to the reinforcing iron, which avoids cracks at the level of the connection. Other characteristics and advantages of the invention will appear during the description which follows of particular embodiments, given solely by way of nonlimiting examples, with reference to the drawings which represent:
- les figures 1 à 4, des schémas montrant dés ancres de la technique antérieure et leurs inconvénients ;- Figures 1 to 4, diagrams showing anchors of the prior art and their drawbacks;
- la figure 5, une vue en coupe de la partie inférieure d'une ancre selon l'invention ;- Figure 5, a sectional view of the lower part of an anchor according to the invention;
- la figure 6, une vue en coupe verticale d'un second mode de réalisation, solidarisée avec deux armatures permettant son implantation ;- Figure 6, a vertical sectional view of a second embodiment, secured with two frames allowing its implantation;
- La figure 7, une vue par-dessus correspondant au mode de réalisation de la figure 5 ;- Figure 7, a top view corresponding to the embodiment of Figure 5;
- les figures 8 et 9, des vues respectivement de face et de côté, d'un autre mode de réalisation ;- Figures 8 and 9, respectively front and side views of another embodiment;
- les figures 10 et 11, des vues de face et de profil d'une ancre avec fixation de deux armatures d'angles de courbure différents ;- Figures 10 and 11, front and side views of an anchor with attachment of two frames of different angles of curvature;
- les figures 12 à 14, des vues de face et en coupe verticale et, en vue par-dessus d'un pied d'ancre à deux rampes selon une variante de l'invention ;- Figures 12 to 14, front views and in vertical section and, in top view of an anchor foot with two ramps according to a variant of the invention;
Sur la figure 5, on distingue l'extrémité inférieure de l'implant 1 qui, dans l'exemple représenté, est constitué par une tige cylindrique percée d'un oeil 2 et terminée immédiatement au-dessous de l'oeil 2 par un pied 3. A l'intérieur de l'oeil passe un fer de renfort 4 qui s'insère, lors du montage, dans une gorge ou rampe d'appui 5 dans laquelle le fer est parfaitement guidé et maintenu. Le pied 3 peut être partiellement évidé comme représenté en 6. La tête d'ancre non représentée, peut être quelconque et permet la prise de l'ancre par un engin de levage approprié. On a ainsi remarqué que l'ancre selon la présente invention travaille simultanément lorsqu'une armature est passée à l'intérieur de l'oeil 2, par compression et par adhérence du béton, ou plus généralement du constituant de l'élément. Cela donne un ensemble homogène qui augmente la charge transportable pour un même encombrement de l' insert. La résistance résultante est supérieure à la somme de chacune des résistances (compression et adhérence) considérées séparément. La structure de la pièce supprime le jeu d'articulation existant précédemment dans les ancres à oeil, ce qui élimine les risques de fissuration. L'effort est réparti sur le fer de renfort 4 sur une certaine longueur et celui-ci ne travaille ' plus à la flexion ou au. cisaillement, comme c'était le cas dans les ancres à oeil connues. Dans un panneau mince, cette réalisation évite la détérioration du panneau représentée sur la figure 3.In FIG. 5, a distinction is made between the lower end of the implant 1 which, in the example shown, consists of a cylindrical rod pierced with an eye 2 and terminated immediately below the eye 2 by a foot 3. Inside the eye passes a reinforcing iron 4 which is inserted, during assembly, in a groove or support ramp 5 in which the iron is perfectly guided and maintained. The foot 3 can be partially hollowed out as shown in 6. The anchor head not shown, can be any and allows the anchor to be taken up by a suitable lifting device. It has thus been noted that the anchor according to the present invention works simultaneously when a frame has passed inside the eye 2, by compression and by adhesion of the concrete, or more generally of the constituent of the element. This gives a homogeneous unit which increases the transportable load for the same size of the insert. The resulting resistance is greater than the sum of each of the resistances (compression and adhesion) considered separately. The structure of the part eliminates the articulation play existing previously in the eye anchors, which eliminates the risks of cracking. The force is distributed over the reinforcing iron 4 on a certain length and this one worked more bending or. shear, as was the case with known eye anchors. In a thin panel, this embodiment avoids the deterioration of the panel shown in FIG. 3.
La figure 7 représente en vue par-dessus le dispositif représenté sur la figure 5, et l'on voit que le fer 4 est parfaitement guidé par la rampe 5.FIG. 7 shows a view over the device shown in FIG. 5, and it can be seen that the iron 4 is perfectly guided by the ramp 5.
Pour améliorer cette liaison, il est possible comme représenté sur la figure 6, de faire passer dans le pied 3 de l'ancre, deux ou plusieurs fers de renfort 4. Les oeils 2 sont alors formés dans le pied 3. Ainsi, pour un effort total identique, le diamètre des armatures peut être réduit, ce qui conduit à une réduction importante du rayon de courbure de celles-ci et facilite la réalisation des rampes d'appui. Sur la figure 6, la tête 7 de l'ancre se prolonge vers le bas par une tige courte 1, se terminant par un pied 3 muni de deux ouvertures 2, les rampes d'appui pouvant, dans ce cas, être inclinées. Dans le cas où la longueur de l'implant, muni d'un ou plusieurs orifices pour fers d'armatures, et de rampes d'appui, est suffisante par rapport aux caractéristiques physiques des constituants de l'élément, il est possible de supprimer les fers de renfort, les rampes d'appui 5 formant alors un ancrage par pénétration du matériau à l'intérieur desdites rampes.To improve this connection, it is possible as shown in Figure 6, to pass through the foot 3 of the anchor, two or more reinforcing irons 4. The eyes 2 are then formed in the foot 3. Thus, for a identical total force, the diameter of the reinforcements can be reduced, which leads to a significant reduction in the radius of curvature of these and facilitates the production of the support ramps. In FIG. 6, the head 7 of the anchor is extended downwards by a short rod 1, ending in a foot 3 provided with two openings 2, the support ramps being able, in this case, to be inclined. In the case where the length of the implant, provided with one or more orifices for reinforcing bars, and support ramps, is sufficient in relation to the physical characteristics of the constituents of the element, it is possible to remove the reinforcing bars, the support ramps 5 then forming an anchorage by penetration of the material inside said ramps.
L'implant selon l'invention peut être soit plein, et obtenu par moulage, forgeage ou usinage, soit creux et constitué essentiellement par un tube comme représenté sur les figures 8 et 9. Dans ce cas, l'extrémité supérieure de la tige 1 peut présenter par exemple un trou taraudé 8, alors que le pied de l'ancre 3 est constitué par un épanouissement 9 du tube qui, comme précédemment, soutient l'armature 4 sur une partie suffisante de sa longueur, cette armature 4 passant, comme précédemment, par l'oeil 2. La courbure de l'épanouissement 9 est telle qu'elle corresponde exactement à la coubure du fer 4 pour maintenir parfaitement celui-ci lorsqu'une traction est appliquée sur la douille 1.The implant according to the invention can be either full, and obtained by molding, forging or machining, or hollow and essentially constituted by a tube as shown in Figures 8 and 9. In this case, the upper end of the rod 1 can present for example a tapped hole 8, while the foot of the anchor 3 is constituted by a development 9 of the tube which, as before, supports the frame 4 over a sufficient part of its length, this frame 4 passing, as previously , by the eye 2. The curvature of the opening 9 is such that it corresponds exactly to the curvature of the iron 4 in order to maintain it perfectly when a traction is applied to the bush 1.
Les figures 10 et 11 montrent respectivement, en vue de face et en vue de côté, l'ancrage dans un panneau de faible épaisseur. On retrouve sur la figure 10 une ancre telle que celle qui est représentée sur la figure 6 permettant le passage de deux armatures 4a et 4b s'étendant dans deux plans verticaux parallèles. Comme cela apparaît sur la figure 10, la tête 7 fait saillie à l'intérieur d'une réservation 10 prévue dans le panneau 11. Mais, selon une caractéristique de l'invention, les armatures 4a et 4b peuvent s'étendre toujours dans deux plans parallèles, selon des angles différents, les deux rampes d'appui 5 présentant des courbures identiques ou différentes. On obtient ainsi une meilleure répartition des fers de renfort à l'intérieur du panneau, ce qui permet d'accroître la sécurité.Figures 10 and 11 show respectively, in front view and in side view, the anchoring in a thin panel. We find in Figure 10 an anchor such as that shown in Figure 6 allowing the passage of two frames 4a and 4b extending in two parallel vertical planes. As shown in FIG. 10, the head 7 protrudes inside a reservation 10 provided in the panel 11. But, according to a characteristic of the invention, the frames 4a and 4b can always extend in two parallel planes, at different angles, the two support ramps 5 having identical or different curvatures. A better distribution of the reinforcing bars is thus obtained inside the panel, which increases safety.
Les figures 12, 13 et 14 représentent un autre mode de réalisation d'un pied d'ancre 3, dans lequel les rampes 5 excentrées par rapport à la tige 1 peuvent être droites ou inclinées en fonction des besoins. C'est-à-dire que les plans contenant les axes X des rampes sont, soit parallèles à l'axe de l'ancre, soit inclinés par rapport à cet axe.Figures 12, 13 and 14 show another embodiment of an anchor foot 3, in which the ramps 5 offset from the rod 1 can be straight or inclined as required. That is to say that the planes containing the axes X of the ramps are either parallel to the axis of the anchor, or inclined with respect to this axis.
Dans le cas d'un implant à deux fers de renfort, ceux-ci peuvent être fixés dans l'implant par sertissage par exemple, ce qui donne un ensemble rigide, facile à disposer, avant la coulée du constituant du panneau. L'implant à plusieurs rampes de passage permet de diffuser les efforts de l'élément, ce qui est avantageux, notamment si la résistance est très faible, par exemple lorsque le béton n'a pas encore pris sa résistance à la compression définitive. Un implant très court avec plusieurs fers de renfort créé pour la manutention des dalles très minces, peut être également utilisé sur le chant des éléments pour leur relevage et leur manutention verticale. Les rampes d'appui 5 peuvent être, en une ou deux pièces, ajoutées à l'implant par sertissage, soudure ou encore réalisées par déformation de la pièce.In the case of an implant with two reinforcing bars, these can be fixed in the implant by crimping for example, which gives a rigid assembly, easy to arrange, before the component of the panel is cast. The implant with several passage ramps makes it possible to diffuse the forces of the element, which is advantageous, especially if the resistance is very low, for example when the concrete has not yet taken its resistance to final compression. A very short implant with several reinforcing bars created for handling very thin slabs can also be used on the edge of the elements for lifting and vertical handling. The support ramps 5 can be, in one or two pieces, added to the implant by crimping, welding or even produced by deformation of the piece.
Les pièces d'ancrage selon l'invention peuvent être obtenues par les procédés de fabrication connus et elles peuvent être soit monobloc, soit comporter des éléments rapportés par soudure ou braεage, et, en particulier, le pied muni de ses rampes peut être rapporté sur une tige forgée.The anchoring parts according to the invention can be obtained by known manufacturing methods and they can be either in one piece, or include elements added by welding or braiding, and, in particular, the foot provided with its ramps can be attached to a forged rod.
La forme conique du pied , particulièrement lorsque celui-ci est évidé puisque le matériau pénètre alors dans l'évidement, permet de contrebalancer les efforts latéraux qui peuvent être appliqués par un engin, lors du relevage d'un panneau. Pour le relevage d'éléments minces, l'implant étant disposé sur chant, une liaison par soudure, par exemple, entre l'implant et le fer de renfort peut supprimer toute articulation, ce qui limite les fissurations lors du relevage.The conical shape of the foot, particularly when the latter is hollowed out since the material then enters the recess, makes it possible to counterbalance the lateral forces which can be applied by a machine, when lifting a panel. For the lifting of thin elements, the implant being placed on edge, a welded connection, for example, between the implant and the reinforcing iron can eliminate any articulation, which limits cracks during lifting.
Il va de soi que de nombreuses variantes peuvent être introduites, notamment par substitution de moyens techniquement équivalents sans pour autant sortir du cadre de 1' invention. It goes without saying that many variants can be introduced, in particular by substitution of technically equivalent means without departing from the scope of the invention.

Claims

REVENDICATIONS
1. Pièce d'ancrage pour matériau durcissable comprenant une partie restant extérieure au matériau et prévue pour la préhension, une tige présentant un axe de symétrie et un pied de dimensions supérieures à la tige, caractérisée en ce que le pied (3) comporte au moins une ampe d'appui et de guidage (5), creusée dans sa face supérieure,pour un fer de renfort (4) .1. Anchor for hardenable material comprising a part remaining outside the material and intended for gripping, a rod having an axis of symmetry and a foot of dimensions greater than the rod, characterized in that the foot (3) comprises at at least one support and guide section (5), hollowed out in its upper face, for a reinforcing iron (4).
2. Pièce d'ancrage selon la revendication 1 , caractérisée en ce que la base de la tige (1) est percée d'au moins un oeil (2) dans une direction sensiblement perpendiculaire à l'axe de symétrie, la partie supérieure du pied (3) étant creusée pour constituer la rampe d'appui (5).2. Anchor according to claim 1, characterized in that the base of the rod (1) is pierced with at least one eye (2) in a direction substantially perpendicular to the axis of symmetry, the upper part of the foot (3) being hollowed out to constitute the support ramp (5).
3. Pièce d'ancrage selon la revendication 1, caractérisée en la rampe (5) est excentrée par rapport à l'axe de symétrie de la tige (1)3. Anchor according to claim 1, characterized in the ramp (5) is eccentric relative to the axis of symmetry of the rod (1)
4. Pièce d'ancrage selon la revendication 3, caractérisée en ce que le pied (3) comporte au moins deux rampes d'appui disposées symétriquement par rapport à l'axe de la tige (1).4. Anchor according to claim 3, characterized in that the foot (3) comprises at least two support ramps arranged symmetrically with respect to the axis of the rod (1).
5. Pièce d'ancrage selon la revendication 4, caractérisée en ce que le pied (3) de l'ancre est percé de deux oeils (2) dont chacun se situe dans le prolongement d'une rampe (5).5. Anchor according to claim 4, characterized in that the foot (3) of the anchor is pierced with two eyes (2) each of which is located in the extension of a ramp (5).
6° Pièce d'ancrage selon la revendication 2, caractérisée en ce qu'elle est tubulaire, le pied (3) étant formé par un épanouissement (9) de la base du tube (1) dont la coubure est sensiblement égale à la coubure de l'armature (4).6 ° anchoring piece according to claim 2, characterized in that it is tubular, the foot (3) being formed by a development (9) of the base of the tube (1) whose curvature is substantially equal to the curvature of the frame (4).
7. Pièce d'ancrage selon l'une des revendications 3 ou 5, caractérisée en ce que le pied (3) présente au moins deux rampes d'appui (5) de courbures différentes. 7. Anchor according to one of claims 3 or 5, characterized in that the foot (3) has at least two support ramps (5) of different curvatures.
8. Pièce d'ancrage selon la revendication 1, caractérisée en ce que le pied (3) est à symétrie de révolution, la base du pied (3) comprenant un évidement (6).8. An anchor according to claim 1, characterized in that the foot (3) is symmetrical in revolution, the base of the foot (3) comprising a recess (6).
9. Pièce d'ancrage selon l'une quelconque des revendications précédentes, caractérisée en ce que les plans des axes (X) des rampes d'appui (5) sont parallèles à l'axe de la pièce d'ancrage.9. Anchor piece according to any one of the preceding claims, characterized in that the planes of the axes (X) of the support ramps (5) are parallel to the axis of the anchor piece.
10. Pièce d'ancrage selon l'une quelconque des revendications précédentes, caractérisée en ce que le ou les fers de renfort (4) sont solidarisés avec le pied (3) , notamment par soudure, réalisant ainsi un ensemble supprimant l'articulation entre les éléments. 10. Anchor according to any one of the preceding claims, characterized in that the reinforcing bar or bars (4) are secured to the foot (3), in particular by welding, thus producing an assembly eliminating the articulation between the elements.
EP89908195A 1988-07-11 1989-07-10 Anchorage piece, in particular for concrete Expired - Lifetime EP0383870B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT89908195T ATE95872T1 (en) 1988-07-11 1989-07-10 ANCHORING DEVICE ESPECIALLY FOR CONCRETE.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8809386 1988-07-11
FR8809386A FR2633959B1 (en) 1988-07-11 1988-07-11 ANCHORING PIECE, PARTICULARLY FOR CONCRETE

Publications (2)

Publication Number Publication Date
EP0383870A1 true EP0383870A1 (en) 1990-08-29
EP0383870B1 EP0383870B1 (en) 1993-10-13

Family

ID=9368311

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89908195A Expired - Lifetime EP0383870B1 (en) 1988-07-11 1989-07-10 Anchorage piece, in particular for concrete

Country Status (11)

Country Link
US (1) US5469675A (en)
EP (1) EP0383870B1 (en)
JP (1) JPH03500315A (en)
KR (1) KR900702163A (en)
AU (1) AU619874B2 (en)
CA (1) CA1335475C (en)
DE (1) DE68909917T2 (en)
ES (1) ES2016146A6 (en)
FR (1) FR2633959B1 (en)
HK (1) HK77994A (en)
WO (1) WO1990000658A1 (en)

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Also Published As

Publication number Publication date
ES2016146A6 (en) 1990-10-16
JPH03500315A (en) 1991-01-24
FR2633959B1 (en) 1992-07-24
WO1990000658A1 (en) 1990-01-25
EP0383870B1 (en) 1993-10-13
DE68909917T2 (en) 1994-04-21
HK77994A (en) 1994-08-12
CA1335475C (en) 1995-05-09
KR900702163A (en) 1990-12-06
FR2633959A1 (en) 1990-01-12
AU619874B2 (en) 1992-02-06
AU3878289A (en) 1990-02-05
DE68909917D1 (en) 1993-11-18
US5469675A (en) 1995-11-28

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