FR2672922A1 - Method of temporarily fixing a formwork element between two metal shuttering panels - Google Patents

Method of temporarily fixing a formwork element between two metal shuttering panels Download PDF

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Publication number
FR2672922A1
FR2672922A1 FR9102296A FR9102296A FR2672922A1 FR 2672922 A1 FR2672922 A1 FR 2672922A1 FR 9102296 A FR9102296 A FR 9102296A FR 9102296 A FR9102296 A FR 9102296A FR 2672922 A1 FR2672922 A1 FR 2672922A1
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France
Prior art keywords
formwork
stud
magnetic
formwork element
bore
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Granted
Application number
FR9102296A
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French (fr)
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FR2672922B1 (en
Inventor
Roire Pierre
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MURE ETS
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MURE ETS
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Publication date
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Priority to FR9102296A priority Critical patent/FR2672922B1/en
Publication of FR2672922A1 publication Critical patent/FR2672922A1/en
Application granted granted Critical
Publication of FR2672922B1 publication Critical patent/FR2672922B1/en
Anticipated expiration legal-status Critical
Expired - Fee Related 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
    • E04G15/00—Forms or shutterings for making openings, cavities, slits, or channels
    • E04G15/06—Forms or shutterings for making openings, cavities, slits, or channels for cavities or channels in walls of floors, e.g. for making chimneys
    • E04G15/063—Re-usable forms
    • 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
    • E04G15/00—Forms or shutterings for making openings, cavities, slits, or channels
    • E04G15/02—Forms or shutterings for making openings, cavities, slits, or channels for windows, doors, or the like
    • 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
    • E04G15/00—Forms or shutterings for making openings, cavities, slits, or channels
    • E04G15/06—Forms or shutterings for making openings, cavities, slits, or channels for cavities or channels in walls of floors, e.g. for making chimneys
    • E04G15/061—Non-reusable forms

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Mechanical Engineering (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Moulds, Cores, Or Mandrels (AREA)

Abstract

This means is of the type including magnetic pads for attachment against the metal internal face of a shuttering panel. According to the invention, it is composed, for each magnetic pad (5), of a transverse bore (8) made in this pad and serving for the passage and for the guiding of an elongate element (9) formed by a separating spreader (spacer) between the two shuttering panels of the formwork.

Description

"Moyen de fixation temporaire d'un élément de coffrage entre deux banches métalliques". "Means of temporary fixing of a formwork element between two metal formwork".

La présente invention a pour objet un moyen de fixation temporaire d'un élément de coffrage entre deux banches métalliques. The present invention relates to a means of temporarily fixing a formwork element between two metal formwork.

Lors de la réalisation de coffrages pour la construction de parois en béton, il est connu de ménager des réservations pour les ouvertures en disposant localement, et dans l'intervalle entre les banches métalliques, respectivement intérieure et extérieure, des éléments particuliers de coffrage, dénommés mannequins. Chaque mannequin est généralement formé par un cadre ayant, extérieurement, des dimensions égales à celles intérieures de la réservation que l'on veut former dans la paroi. Le cadre est muni de moyens de fixation sur les banches métalliques, moyens généralement constitués par des plots magnétiques disposés le long des bords intérieurs du cadre et munis de moyens à vis ou à excentrique permettant le décollage de la banche, après dé coffrage. When making forms for the construction of concrete walls, it is known to make reservations for the openings locally having, and in the interval between the metal forms, respectively interior and exterior, specific elements of formwork, called mannequins. Each mannequin is generally formed by a frame having, on the outside, dimensions equal to those inside of the reservation which it is desired to form in the wall. The frame is provided with fixing means on the metal formwork, means generally constituted by magnetic studs arranged along the inner edges of the frame and provided with screw or eccentric means allowing the take-off of the sheet, after formwork removal.

L'usage montre que, malgré des améliorations constantes des caractéristiques des plots magnétiques, la force de plaquage s'avère souvent insuffisante pour assurer une tenue parfaite du mannequin, de sorte que celui-ci parvient à glisser lors de la coulée du béton. The practice shows that, in spite of constant improvements in the characteristics of the magnetic studs, the plating force often proves to be insufficient to ensure perfect holding of the manikin, so that the latter manages to slide during the pouring of the concrete.

La présente invention a pour but de remédier à ces inconvénients en fournissant un moyen de fixation temporaire de l'élément de coffrage. The object of the present invention is to remedy these drawbacks by providing a means for temporarily fixing the formwork element.

A cet effet, ce moyen de fixation est composé, pour chaque plot magnétique de l'élément de coffrage, par un alésage transversal ménagé dans ce plot et servant au passage et au guidage d'un élément allongé formé par une entretoise d'écartement entre les deux banches du coffrage. For this purpose, this fixing means is composed, for each magnetic stud of the formwork element, by a transverse bore formed in this stud and serving for the passage and the guiding of an elongated element formed by a spacer spacer between the two formwork forms.

Grâce à cet agencement, le cadre qui est fixé contre l'une des banches par ces plots magnétiques, est bloqué dans le coffrage grace à l'action des entretoises associées aux différents plots, qui évitent tout risque de glissement de ceux-ci. Thanks to this arrangement, the frame which is fixed against one of the forms by these magnetic studs, is blocked in the formwork thanks to the action of the spacers associated with the different studs, which avoid any risk of them sliding.

Dans une forme d'exécution de l'invention, l'alésage ménagé dans chaque plot magnétique présente un diamètre allant en décroissant depuis la face d'appui du plot et ayant la même conicité que celle des entretoises de maintien de l'écartement des banches. In one embodiment of the invention, the bore formed in each magnetic stud has a diameter which decreases from the bearing face of the stud and having the same conicity as that of the spacers for maintaining the spacing of the formwork .

I1 est ainsi obtenu par coincement une parfaite tenue de l'entretoise dans le plot, avec maintien de l'entretoise dans une position perpendiculaire à la face d'appui du plot contre une banche.  I1 is thus obtained by wedging a perfect hold of the spacer in the block, with the spacer being held in a position perpendicular to the bearing face of the block against a panel.

L'invention sera mieux comprise à l'aide de la description qui suit en référence aux dessins schématiques annexés, représentant à titre d'exemple non limitatif, une forme d'exécution du moyen de fixation selon l'invention. The invention will be better understood with the aid of the description which follows with reference to the appended schematic drawings, representing by way of nonlimiting example, an embodiment of the fixing means according to the invention.

Figure 1 est une vue en perspective avec coupe partielle montrant un élément de coffrage muni du moyen de fixation selon l'invention,
Figure 2 est une vue partielle de côté en coupe suivant II-II de figure 1, montrant à échelle agrandie un plot magnétique muni du moyen de fixation,
Figure 3 est une vue en perspective et avec coupe partielle montrant le plot magnétique selon l'invention.FIG. 1 is a perspective view with partial section showing a formwork element provided with the fixing means according to the invention,
FIG. 2 is a partial side view in section along II-II of FIG. 1, showing on an enlarged scale a magnetic stud provided with the fixing means,
Figure 3 is a perspective view with partial section showing the magnetic pad according to the invention.

A la figure 1, les références 2 et 3 désignent deux banches métalliques, respectivement intérieure et extérieure, 4 désigne un élément de coffrage et en l'occurrence un cadre comportant dans chacun de ses angles, des plots magnétiques 5, destinés à assurer la fixation du cadre sur la banche 2. In FIG. 1, the references 2 and 3 designate two metal forms, respectively interior and exterior, 4 designates a formwork element and in this case a frame comprising, in each of its angles, magnetic studs 5, intended to ensure the fixing of the frame on the panel 2.

Comme le montrent plus en détails les figures 3 et 4, chacun des plots magnétiques 5 est composé d'une semelle 6 dans laquelle sont inclus des aimants 11, bordée sur au moins deux côtés correspondant à l'angle du cadre par une nervure 7. Selon l'invention, dans la semelle 6 du plot est ménagé un alésage transversal 8 qui est tronconique et présente un diamètre allant en croissant depuis la face d'appui 6a de la semelle 6 jusqu'à sa face interne 6b. La conicité de l'alésage 8 est égale à celle des entretoises 9 généralement utilisées pour maintenir l'écartement entre les banches 2 et 3. Le plus grand diamètre de l'alésage 8 est au moins égal au jeu fonctionnel près, au plus grand diamètre de l'entretoise 9. Grâce à cet agencement, avant sa mise en place contre la banche 2, chaque plot magnétique 5 reçoit dans l'alésage 8 une entretoise 9.Cette dernière forme ainsi, avec un plot magnétique 5, un ensemble qui peut aisément être amené contre la face interne de la banche 2 sans risque de désolidarisation. I1 est ensuite procédé à la mise en place de la banche 3. Dans ces conditions, et comme le montre la figure 2, chacune des entretoises 9 qui est pincée entre les deux banches constitue un moyen de blocage apte, en coopérant avec la paroi tronconique de l'alésage 8 du plot correspondant à s'opposer à tout glissement de l'élément de coffrage 4 sous l'action de la coulée du béton. As FIGS. 3 and 4 show in more detail, each of the magnetic studs 5 is composed of a sole 6 in which magnets 11 are included, bordered on at least two sides corresponding to the angle of the frame by a rib 7. According to the invention, in the sole 6 of the stud is formed a transverse bore 8 which is frustoconical and has a diameter increasing from the bearing face 6a of the sole 6 to its internal face 6b. The taper of the bore 8 is equal to that of the spacers 9 generally used to maintain the spacing between the forms 2 and 3. The largest diameter of the bore 8 is at least equal to the nearest functional clearance, to the largest diameter of the spacer 9. Thanks to this arrangement, before being placed against the panel 2, each magnetic pad 5 receives a spacer 9. In the bore 8, this latter thus forms, with a magnetic pad 5, an assembly which can easily be brought against the internal face of the panel 2 without risk of separation. I1 is then proceeded to the establishment of the sheet 3. Under these conditions, and as shown in Figure 2, each of the spacers 9 which is clamped between the two forms constitutes a suitable blocking means, cooperating with the frustoconical wall of the bore 8 of the stud corresponding to oppose any sliding of the formwork element 4 under the action of pouring the concrete.

Après coulée du béton et durcissement de celui-ci, le décoffrage s'effectue de façon traditionnelle en retirant d'abord la banche 3 puis, en désolidarisant l'élément de coffrage 4 de la banche 2, et enfin, en retirant la banche 2. Après cette dernière opération, la réservation formée dans la pièce bétonnée, correspond parfaitement à la forme extérieure de l'élément de coffrage 4, n'a besoin d'aucune reprise et est parfaitement positionnée puisque l'élément de coffrage 4 n'a pas pu glisser en raison de son appui sur les entretoises 9 formant moyens de blocage. After pouring the concrete and hardening it, the formwork is done in the traditional way by first removing the form 3 then, by separating the formwork element 4 from the form 2, and finally, by removing the form 2 After this last operation, the reservation formed in the concrete part, corresponds perfectly to the external shape of the formwork element 4, does not need any recovery and is perfectly positioned since the formwork element 4 has could not slide due to its support on the spacers 9 forming locking means.

Par ailleurs, de par leur position à l'intérieur de l'élément de coffrage 4, les entretoises 9 qui peuvent être récupérées comme éIéments de coffrage ne laissent aucune trace dans la pièce bétonnée. Furthermore, because of their position inside the formwork element 4, the spacers 9 which can be recovered as formwork elements leave no trace in the concrete part.

Il ressort de ce qui précède que le dispositif, selon l'invention, est particulièrement simple et permet pour un très faible coût de garantir le positionnement d'éléments de coffrage entre deux banches métalliques. It emerges from the above that the device according to the invention is particularly simple and allows for a very low cost to guarantee the positioning of shuttering elements between two metal formwork.

Avantageusement, et comme le montre la figure 3, chaque plot magnétique 5 est muni en complément de l'alésage tronconique 8 d'une lumière latérale 10 dans laquelle est disposé un levier 12 à excentrique de décollage du plot. L'une des extrémités de ce levier est articulée en 13 autour d'un axe transversal traversant la lumière 10. Cette extrémité est munie d'une rampe excentrée 14 apte, lorsque l'autre extrémité du levier est pivotée dans le sens de la flèche 15 de figure 3, à venir en appui sur la face interne de la banche pour éloigner la face d'appui 6a de la semelle 6 de cette face d'appui et provoquer ainsi le décollage du plot magnétique. Advantageously, and as shown in FIG. 3, each magnetic stud 5 is provided in addition to the frustoconical bore 8 with a lateral light 10 in which a lever 12 with eccentric for taking off the stud is disposed. One end of this lever is articulated at 13 around a transverse axis passing through the lumen 10. This end is provided with an eccentric ramp 14 suitable, when the other end of the lever is pivoted in the direction of the arrow 15 of Figure 3, coming to bear on the internal face of the form to move the bearing face 6a of the sole 6 away from this bearing face and thus cause the magnetic pad to take off.

Ce dispositif, beaucoup plus simple que les vérins à vis utilisés jusqu'à ce jour, permet, par une longueur de levier appropriée, de fournir un effort de décollage aussi important qu'avec une vis, avec un temps de manipulation beaucoup plus rapide. This device, much simpler than the screw jacks used to date, allows, by an appropriate length of lever, to provide a takeoff effort as important as with a screw, with a much faster handling time.

Le moyen de fixation selon l'invention qui a été décrit, ci-dessus, dans le cadre de son application à un élément de coffrage constitué par un cadre rectangulaire, pourrait être utilisé avec tout autre élément de coffrage, dont la fixation sur une banche est assurée par des plots magnétiques, ou encore il pourrait comprendre un élément formant entretoise entre les deux banches qui possède non pas une forme tronconique, mais une section constante, sans que l'on sorte pour autant du cadre de l'invention.  The fixing means according to the invention which has been described above, in the context of its application to a formwork element constituted by a rectangular frame, could be used with any other formwork element, including fixing on a sheet is provided by magnetic pads, or it could include a spacer forming element between the two forms which has not a frustoconical shape, but a constant section, without departing from the scope of the invention.

Claims (3)

REVENDICATIONS 1. Moyen de fixation temporaire d'un élément de coffrage entre deux banches métalliques, du type comportant des plots magnétiques de fixation contre la face interne métallique d'une banche, caractérisé en ce qu'il est composé, pour chaque plot magnétique (5), par un alésage transversal (8), ménagé dans ce plot et servant au passage et au guidage d'un élément allongé (9) formé par une entretoise d'écartement entre les deux banches du coffrage. 1. Means for temporarily fixing a formwork element between two metal formwork, of the type comprising magnetic studs for fixing against the metallic internal face of a sheet, characterized in that it is composed, for each magnetic stud (5 ), by a transverse bore (8), formed in this stud and serving for the passage and the guiding of an elongated element (9) formed by a spacer spacer between the two forms of the formwork. 2. Moyen de fixation selon la revendication 1, caractérisé en ce que l'alésage (8) présente un diamètre allant en décroissant depuis la face d'appui du plot, et de même conicité que celle des entretoises (9), pour le maintien de l'écartement des banches (2-3). 2. Fastening means according to claim 1, characterized in that the bore (8) has a diameter decreasing from the bearing face of the stud, and of the same conicity as that of the spacers (9), for the maintenance the spacing of the formwork (2-3). 3. Moyen de fixation selon la revendication 1, caractérisé en ce que chaque plot magnétique comporte, dans la paroi comportant l'alésage (8), une lumière latérale (10) dans laquelle est disposé un levier (12) de décollage, ce levier étant muni, à son extrémité articulée en (13) dans la lumière, d'une rampe excentrée (14), apte à venir en appui sur la banche pour éloigner la face d'appui de la semelle (6) du plot (5) de cette banche, lorsqu'il est pivoté de 90".  3. Fastening means according to claim 1, characterized in that each magnetic stud comprises, in the wall comprising the bore (8), a lateral light (10) in which is disposed a lever (12) for take-off, this lever being provided, at its articulated end in (13) in the light, with an eccentric ramp (14), capable of coming to bear on the form to move the bearing face of the sole (6) away from the stud (5) of this panel, when rotated 90 ".
FR9102296A 1991-02-14 1991-02-14 MEANS OF TEMPORARY FIXING OF A FORMWORK ELEMENT BETWEEN TWO METAL BANKS. Expired - Fee Related FR2672922B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR9102296A FR2672922B1 (en) 1991-02-14 1991-02-14 MEANS OF TEMPORARY FIXING OF A FORMWORK ELEMENT BETWEEN TWO METAL BANKS.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR9102296A FR2672922B1 (en) 1991-02-14 1991-02-14 MEANS OF TEMPORARY FIXING OF A FORMWORK ELEMENT BETWEEN TWO METAL BANKS.

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FR2672922A1 true FR2672922A1 (en) 1992-08-21
FR2672922B1 FR2672922B1 (en) 1995-10-06

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2847922A1 (en) * 2002-11-29 2004-06-04 Hussor S A Shuttering for building with mould for enclosure or opening has supports for positioning guides for enclosure mould glued to surface of shuttering

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2503226A1 (en) * 1981-04-07 1982-10-08 Sauveplane Pierre Dummy for forming apertures in cast concrete wall - has frame attached to one shuttering panel by permanent magnets
FR2552145A1 (en) * 1983-09-15 1985-03-22 Quille Entreprise Device for retaining a casting stop or wall-pocket element on a metal shuttering element
FR2570418A1 (en) * 1984-09-19 1986-03-21 Laroche Jean Pierre Device for separating metal formwork elements and for creating pockets in concrete walls in the process of being constructed
FR2644823A1 (en) * 1989-03-21 1990-09-28 Laroche Jean Pierre Device and method for achieving peripheral support of slabs and shuttering floor slabs made of reinforced concrete in the building industry, and for assembling reinforcement frames meeting the reinforced-concrete standards

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2503226A1 (en) * 1981-04-07 1982-10-08 Sauveplane Pierre Dummy for forming apertures in cast concrete wall - has frame attached to one shuttering panel by permanent magnets
FR2552145A1 (en) * 1983-09-15 1985-03-22 Quille Entreprise Device for retaining a casting stop or wall-pocket element on a metal shuttering element
FR2570418A1 (en) * 1984-09-19 1986-03-21 Laroche Jean Pierre Device for separating metal formwork elements and for creating pockets in concrete walls in the process of being constructed
FR2644823A1 (en) * 1989-03-21 1990-09-28 Laroche Jean Pierre Device and method for achieving peripheral support of slabs and shuttering floor slabs made of reinforced concrete in the building industry, and for assembling reinforcement frames meeting the reinforced-concrete standards

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2847922A1 (en) * 2002-11-29 2004-06-04 Hussor S A Shuttering for building with mould for enclosure or opening has supports for positioning guides for enclosure mould glued to surface of shuttering

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Publication number Publication date
FR2672922B1 (en) 1995-10-06

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