EP2199493B1 - Method for manufacturing the framework used for quick formworking and installation of walls, slabs, floors and similar elements, and framework obtained according to the method - Google Patents

Method for manufacturing the framework used for quick formworking and installation of walls, slabs, floors and similar elements, and framework obtained according to the method Download PDF

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Publication number
EP2199493B1
EP2199493B1 EP09306162A EP09306162A EP2199493B1 EP 2199493 B1 EP2199493 B1 EP 2199493B1 EP 09306162 A EP09306162 A EP 09306162A EP 09306162 A EP09306162 A EP 09306162A EP 2199493 B1 EP2199493 B1 EP 2199493B1
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Prior art keywords
framework
rib
walls
module
wing
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German (de)
French (fr)
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EP2199493A1 (en
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Patrick Keller
Serge Keller
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Fiprofil
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    • 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
    • E04G11/00—Forms, shutterings, or falsework for making walls, floors, ceilings, or roofs
    • E04G11/36—Forms, shutterings, or falsework for making walls, floors, ceilings, or roofs for floors, ceilings, or roofs of plane or curved surfaces end formpanels for floor shutterings
    • E04G11/365—Stop-end shutterings

Definitions

  • the invention relates to the technical sector of the construction of walls, floors, concrete, requiring a pouring material and the equipment and tools used by masons.
  • the invention relates more particularly to the formwork of slabs for mounting walls from a succession of forms.
  • This device illustrated figure 1 under the prior art, comprises a profiled monobloc armature in a triangular configuration with two wings (4a - 4b) and a hollow medial tubular body (4d) internally welded with the wings of the armature.
  • the body (4d) is horizontal and allows itself the introduction of a threaded rod (5) and adjustment.
  • This threaded rod receives, at the front end (2a), a bracket (7) capable of coming against the formwork (C) underlying and, at the rear end, a means (6) for clamping.
  • the vertical edge (4e) of the lower flange (4a) comes against the opposite side of the lower formwork.
  • the upper part of the frame with its flange (4b) has a vertical fold squared relative to said wing associated therewith and it constitutes a support for the board (P).
  • the problem lies mainly in its cost of manufacture and assembly because it essentially comprises two parts assembled by welding and also incorporating folding operations.
  • the armature with its triangular configuration with the two wings (4a - 4b), is reported and welded to the hollow tubular body (4d) for the passage of the threaded folding rod.
  • the threaded rod has a significant cost knowing that it is lost after stripping.
  • the threaded shank has a thickness of at least 6 mm, which raises the shuttering wafer revealing a significant gap between the already constructed support wall and the shuttering wafer. This void, if it is not joined (additional operation), lets escape the pouring of the milt and the concrete run-off that it is necessary later, by bush-hammering, in order to lay the coating of facade.
  • assembly In addition to the multiple manufacturing operations, assembly is not always easy to perform and requires specific tools. We also wanted to take into account the technical constraints and stresses generated by the pressure force of the concrete. In addition, the assembly, if it is poorly made, has areas of weakening and rupture, and surplus weld accretions inside the hollow body can obstruct and hinder the passage of the spacer element. The welds, if they are poorly made, appear inside the assembly recess, between the armature and the body, beads and, therefore, prevent the free movement of the threaded rod or equivalent means.
  • the armature being of the type comprising a triangular configuration with two wings and an internally hollow medial portion allowing the passage of an adjusting means is remarkable in that it is manufactured from a metal strip in steel rolled into a coil and presented to a cutting machine with progressive tooling ensuring, in a first phase, the cutting of a constituent module of an armature with external shapes and dimensions in unfolding situation then, in a second phase, ensuring notching for the formation of pre-cut notches located on either side of the median transverse part of the module and having a stop function and then, in a third phase, the formation by progressive folding of a part of a rib central transverse may constitute, by its configuration with two opposite walls and spaced, the guide of a zipper adjustment and, a on the other hand, the longitudinal folding of one of the parts of the module beyond said ribbing to form a support plane perpendicular to the plane of the module and then, in a fourth phase, the separation of the module obtained.
  • the armature of the type comprising a triangular configuration with two wings and an internally hollow median portion allowing the passage of a control means, the vertical edge of the lower wing coming in abutment with the opposite face of the lower formwork and the upper part of the frame with its other wing having a vertical fold, constituting a bearing surface of a board used to make the upper formwork, is remarkable in that it comprises, between its wings a part transverse transverse constituting a central rib defined by two opposite parallel walls connected by a connecting portion defining a space constituting the housing and the guide of the adjusting means.
  • This frame is one-piece metal and is a single element that ensures both a counter-support of the opposite face to the lower formwork, and a support for the board.
  • This reinforcement is manufactured from a steel strip of steel, wound in a coil, and presented to a die-cutting machine with progressive tooling ensuring, in a first phase, the cutting of a constituent module.
  • said progressive tooling die-cutting machine is established with control of the steel strip by servocontrol and numerical control.
  • the reinforcement (10) thus produced, according to the aforementioned manufacturing method, is as follows in its final phase of elaboration.
  • the armature thus comprises two wings (10a-10b) of triangular configuration each triangular and set separated by a median transverse portion (10c) constituting a central rib. This is defined by two opposite parallel walls (10c1 - 10c2) connected by the connecting part (10c3) by defining between them a space (e) capable of constituting a housing and guiding of a setting means (11) under zipper shape.
  • Reinforcement reinforcements (10d) and connection may be provided, by stamping, between each of the aforementioned walls and the wing portion (10a - 10b) in extension.
  • the wing (10b) has a fold (10b1) perpendicular to its plane constituting a bearing surface of the board used to make the upper formwork. This fold (10b1) is set back from the edge (10a1) end of the wing (10a) to match the thickness of the boards. A clearance (10m) is formed between the median rib (10c) and the end opposite the fold to facilitate folding operations in manufacturing.
  • the pull tab (11) has a flat section with, at the end, a hooking tab (11a) against the inner face of the formed lower formwork, and this in the manner described in the prior patent.
  • the invention offers many advantages, first of all a very greatly improved strength thanks to the ribbing effect achieved.
  • the manufacture of said reinforcement is optimized and is carried out continuously, without adding independent components. The manufacturing cost is therefore limited. There is no breaking or weakening zone because the reinforcement is made and shaped according to a single component.

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Mechanical Engineering (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Manufacturing Of Tubular Articles Or Embedded Moulded Articles (AREA)
  • Moulds, Cores, Or Mandrels (AREA)
  • Forms Removed On Construction Sites Or Auxiliary Members Thereof (AREA)
  • Finishing Walls (AREA)
  • Sewage (AREA)
  • Floor Finish (AREA)

Abstract

The method involves forming a pre-cur notch on a side of a transversal median part (10c) of a module, and progressive folding forming a part of a transversal progressive rib, where the rib is constituted of a guide of an adjusting pull rod. A longitudinal fold of parts of the module is formed over the rib for producing a support plane perpendicular to a plane of the module. The module is separated. An independent claim is also included for a carcass comprising a transversal median part.

Description

L'invention se rattache au secteur technique de la construction de murs, planchers, en béton, exigeant un coulage de matériau ainsi qu'au matériel et outils utilisés par les maçons.The invention relates to the technical sector of the construction of walls, floors, concrete, requiring a pouring material and the equipment and tools used by masons.

L'invention concerne plus particulièrement le coffrage de dalles permettant de monter des murs à partir d'une succession de coffrages.The invention relates more particularly to the formwork of slabs for mounting walls from a succession of forms.

Le demandeur a la connaissance du brevet FR 2.893.058 qui vise un dispositif pour faciliter le coffrage rapide et le montage de murs pour lequel il a marqué son intérêt à exploitation.The applicant has knowledge of the patent FR 2.893.058 which aims at a device to facilitate the fast formwork and the assembly of walls for which it marked his interest in exploitation.

Ce dispositif, illustré figure 1 au titre de l'art antérieur, comprend une armature monobloc profilée selon une configuration triangulaire avec deux ailes (4a - 4b) et un corps tubulaire (4d) médian creux intérieurement soudé avec les ailes de l'armature. Le corps (4d) est horizontal et autorise lui-même l'introduction d'une tige filetée (5) et de réglage. Cette tige filetée reçoit, en extrémité avant (2a), une équerre (7) susceptible de venir contre le coffrage (C) sous jacent et, en extrémité arrière, un moyen (6) de serrage. Le chant vertical (4e) de l'aile inférieure (4a) vient en contre appui de la face opposée du coffrage inférieur. La partie supérieure de l'armature avec son aile (4b) présente un repli vertical équerré par rapport à ladite aile qui lui est associée et il constitue un appui pour la planche (P).This device, illustrated figure 1 under the prior art, comprises a profiled monobloc armature in a triangular configuration with two wings (4a - 4b) and a hollow medial tubular body (4d) internally welded with the wings of the armature. The body (4d) is horizontal and allows itself the introduction of a threaded rod (5) and adjustment. This threaded rod receives, at the front end (2a), a bracket (7) capable of coming against the formwork (C) underlying and, at the rear end, a means (6) for clamping. The vertical edge (4e) of the lower flange (4a) comes against the opposite side of the lower formwork. The upper part of the frame with its flange (4b) has a vertical fold squared relative to said wing associated therewith and it constitutes a support for the board (P).

Ce dispositif tel que décrit répond parfaitement au problème posé de la pose rapide des moellons de coffrage avec une fonctionnalité améliorée par rapport à l'art antérieur tel que le brevet FR 2.863.637 à partir duquel il a été élaboré.This device as described perfectly meets the problem posed by the rapid installation of the formwork rubble with improved functionality compared to the prior art such as the patent FR 2,863,637 from which it was developed.

Par rapport au dispositif décrit dans le brevet FR 2.893.058 , le problème posé réside essentiellement dans son coût de fabrication et de montage car il comprend essentiellement deux parties assemblées par soudage et intégrant aussi des opérations de pliage. L'armature, avec sa configuration triangulaire avec les deux ailes (4a - 4b), est rapportée et soudée sur le corps tubulaire (4d) creux pour le passage de la tige filetée de repliage. La tige filetée a un coût important sachant qu'elle est perdue après décoffrage. De plus, la tige filetée présente une épaisseur d'au moins 6 mm, ce qui surélève la tranche de coffrage laissant apparaître un vide important entre le mur support déjà construit et la tranche de coffrage. Ce vide, s'il n'est pas jointé (opération supplémentaire), laisse échapper au coulage de la laitance et des coulures de béton qu'il faut par la suite, par bouchardage, afin de poser l'enduit de façade.Compared to the device described in the patent FR 2.893.058 , the problem lies mainly in its cost of manufacture and assembly because it essentially comprises two parts assembled by welding and also incorporating folding operations. The armature, with its triangular configuration with the two wings (4a - 4b), is reported and welded to the hollow tubular body (4d) for the passage of the threaded folding rod. The threaded rod has a significant cost knowing that it is lost after stripping. In addition, the threaded shank has a thickness of at least 6 mm, which raises the shuttering wafer revealing a significant gap between the already constructed support wall and the shuttering wafer. This void, if it is not joined (additional operation), lets escape the pouring of the milt and the concrete run-off that it is necessary later, by bush-hammering, in order to lay the coating of facade.

Outre les opérations multiples de fabrication, l'assemblage n'est pas toujours aisé à réaliser et nécessite un outillage spécifique. On a voulu aussi tenir compte des contraintes techniques et sollicitations engendrées par la force de pression du béton. En outre, l'assemblage, s'il est mal réalisé, présente des zones d'affaiblissement et de rupture, et des surplus d'accrétions de soudure à l'intérieur du corps creux pouvant l'obstruer et gêner le passage de l'élément d'entretoise. Les soudures, si elles sont mal réalisées, font apparaître à l'intérieur du creux d'assemblage, entre l'armature et le corps, des bourrelets et, par conséquent, empêcher le libre déplacement de la tige filetée ou moyen équivalent.In addition to the multiple manufacturing operations, assembly is not always easy to perform and requires specific tools. We also wanted to take into account the technical constraints and stresses generated by the pressure force of the concrete. In addition, the assembly, if it is poorly made, has areas of weakening and rupture, and surplus weld accretions inside the hollow body can obstruct and hinder the passage of the spacer element. The welds, if they are poorly made, appear inside the assembly recess, between the armature and the body, beads and, therefore, prevent the free movement of the threaded rod or equivalent means.

La démarche du demandeur a donc été, à partir du concept de l'armature telle que décrite dans le brevet FR 2.893.058 , d'examiner la possibilité d'en optimiser la fabrication pour simplifier et supprimer les opérations d'assemblage en vue d'une réduction des coûts de fabrication. Cette démarche a pour but aussi de tenir compte des contraintes d'utilisation de ce type d'armature, et des coûts d'achat acceptés par les utilisateurs dans le secteur du bâtiment qui sont très vigilants à cet égard en égard de leurs propres contraintes économiques.The applicant's approach was therefore based on the concept of the reinforcement as described in the patent FR 2.893.058 , to examine the possibility of optimizing the manufacturing process to simplify and eliminate assembly operations with a view to reducing manufacturing costs. This approach is also intended to take into account the constraints of use of this type of reinforcement, and purchase costs accepted by users in the building sector who are very vigilant in this respect with regard to their own economic constraints. .

La solution apportée par le demandeur répond à ces différents objectifs.The solution provided by the applicant meets these different objectives.

Selon une première caractéristique, l'armature étant du type comprenant une configuration triangulaire avec deux ailes et une partie médiane creuse intérieurement autorisant le passage d'un moyen de réglage est remarquable en ce qu'elle est fabriquée à partir d'une bande métallique en acier enroulée en bobine et présentée vers une machine de découpage emboutissage à outillage progressif assurant, dans une première phase, la découpe d'un module constitutif d'une armature aux formes et dimensions extérieures en situation de dépliage puis, dans une seconde phase, assurant l'encochage pour la formation d'encoches prédécoupées situées de part et d'autre de la partie transversale médiane du module et ayant une fonction de butée puis, dans une troisième phase, la formation par pliage progressif d'une part d'une nervure centrale transversale susceptible de constituer, par sa configuration à deux parois opposées et espacées, le guide d'une tirette de réglage et, d'autre part, le pliage longitudinal de l'une des parties du module au-delà dudit nervurage pour constituer un plan d'appui perpendiculaire au plan du module puis, dans une quatrième phase, la séparation du module obtenu.According to a first feature, the armature being of the type comprising a triangular configuration with two wings and an internally hollow medial portion allowing the passage of an adjusting means is remarkable in that it is manufactured from a metal strip in steel rolled into a coil and presented to a cutting machine with progressive tooling ensuring, in a first phase, the cutting of a constituent module of an armature with external shapes and dimensions in unfolding situation then, in a second phase, ensuring notching for the formation of pre-cut notches located on either side of the median transverse part of the module and having a stop function and then, in a third phase, the formation by progressive folding of a part of a rib central transverse may constitute, by its configuration with two opposite walls and spaced, the guide of a zipper adjustment and, a on the other hand, the longitudinal folding of one of the parts of the module beyond said ribbing to form a support plane perpendicular to the plane of the module and then, in a fourth phase, the separation of the module obtained.

Selon une autre caractéristique, l'armature du type comprenant une configuration triangulaire avec deux ailes et une partie médiane creuse intérieurement autorisant le passage d'un moyen de réglage, le chant vertical de l'aile inférieure venant en contre appui de la face opposée du coffrage inférieur et la partie supérieure de l'armature avec son autre aile présentant un repli vertical, constituant une face d'appui d'une planche utilisée pour faire le coffrage supérieur, est remarquable en ce qu'elle comprend, entre ses ailes une partie transversale médiane constituant une nervure centrale définie par deux parois parallèles opposées raccordées par une partie de liaison en définissant un espace constituant le logement et le guidage du moyen de réglage. Sur chacune de ses parois de la nervure, et en prolongement avec la partie aile correspondant, sont réalisées des découpes avec chacune une encoche en saillie orientées côté intérieur de la nervure et constituant un moyen de butée, en forme de languette, et de guidage du moyen de réglage.According to another characteristic, the armature of the type comprising a triangular configuration with two wings and an internally hollow median portion allowing the passage of a control means, the vertical edge of the lower wing coming in abutment with the opposite face of the lower formwork and the upper part of the frame with its other wing having a vertical fold, constituting a bearing surface of a board used to make the upper formwork, is remarkable in that it comprises, between its wings a part transverse transverse constituting a central rib defined by two opposite parallel walls connected by a connecting portion defining a space constituting the housing and the guide of the adjusting means. On each of its walls of the rib, and in extension with the corresponding wing portion, are produced cuts each with a projecting notch oriented on the inner side of the rib and constituting a stop means, tongue-shaped, and guide the adjustment means.

Ces caractéristiques et d'autres encore ressortiront bien de la suite de la description.These and other characteristics will be apparent from the rest of the description.

Pour fixer l'objet de l'invention illustrée de manière non limitative aux figures des dessins où :

  • La figure 1 est une vue d'une armature décrite dans le brevet FR 2.893.058 au titre de l'art antérieur.
  • La figure 2 est une vue de l'armature produite selon le procédé de fabrication de l'invention avec l'insertion d'une tirette de réglage en position.
  • La figure 3 est une vue en plan selon la figure 2.
  • La figure 4 est une vue de profil de l'armature selon la figure 2.
  • La figure 4a est une vue agrandie du détail identifié selon la coupe A.A.
  • La figure 5 est une vue de dessous de l'armature selon la figure 4.
  • La figure 6 est une vue de dessus de l'armature selon la figure 4.
  • La figure 7 est une vue de côté selon la figure 6.
For fixing the object of the invention illustrated in a nonlimiting manner to the figures of the drawings where:
  • The figure 1 is a view of an armature described in the patent FR 2.893.058 under the prior art.
  • The figure 2 is a view of the armature produced according to the manufacturing method of the invention with the insertion of a regulation zipper in position.
  • The figure 3 is a plan view according to the figure 2 .
  • The figure 4 is a profile view of the frame according to the figure 2 .
  • The figure 4a is an enlarged view of the detail identified in section AA
  • The figure 5 is a bottom view of the frame according to the figure 4 .
  • The figure 6 is a top view of the frame according to the figure 4 .
  • The figure 7 is a side view according to the figure 6 .

Afin de rendre plus concret l'objet de l'invention, on le décrit maintenant d'une manière non limitative illustrée aux figures des dessins.In order to make the object of the invention more concrete, it is now described in a nonlimiting manner illustrated in the figures of the drawings.

L'armature utilisée selon l'invention pour le coffrage rapide et montage des murs, dalles et similaires, est référencée dans son ensemble par (10). Cette armature est métallique monobloc et constitue un seul élément qui assure à la fois un contre appui de la face opposée au coffrage inférieur, et un appui pour la planche.The reinforcement used according to the invention for rapid formwork and mounting walls, slabs and the like, is referenced as a whole by (10). This frame is one-piece metal and is a single element that ensures both a counter-support of the opposite face to the lower formwork, and a support for the board.

Cette armature, selon l'invention, est fabriquée à partir d'une bande métallique en acier, enroulée en bobine, et présentée vers une machine de découpage emboutissage à outillage progressif assurant, dans une première phase, la découpe d'un module constitutif d'une armature aux formes et dimensions extérieures en situation de dépliage puis, dans une seconde phase, assurant l'encochage pour la formation d'encoches prédécoupées situées de part et d'autre de la partie transversale médiane du module et ayant une fonction de butée puis, dans une troisième phase, la formation par pliage progressif, d'une part, d'une nervure centrale transversale susceptible de constitue, par sa configuration à deux parois opposées et espacées, le guide d'une tirette de réglage et, d'autre part, le pliage longitudinal de l'une des parties du module au-delà dudit nervurage pour constituer un plan d'appui perpendiculaire au plan du module puis, dans une quatrième phase, la séparation du module obtenu.This reinforcement, according to the invention, is manufactured from a steel strip of steel, wound in a coil, and presented to a die-cutting machine with progressive tooling ensuring, in a first phase, the cutting of a constituent module. an armature with external shapes and dimensions in unfolding situation and then, in a second phase, providing notching for the formation of pre-cut notches located on either side of the median transverse part of the module and having an abutment function then, in a third phase, the formation by progressive folding, on the one hand, of a transverse central rib susceptible of its configuration with two opposite and spaced walls, the guide of a control zipper and, secondly, the longitudinal folding of one of the parts of the module beyond said ribbing to form a plane of support perpendicular to the plane of the module and, in a fourth phase, the separation of the module obtained.

Plus particulièrement, ladite machine de découpage emboutissage à outillage progressif est établie avec un pilotage de la bande d'acier par asservissement et par commande numérique.More particularly, said progressive tooling die-cutting machine is established with control of the steel strip by servocontrol and numerical control.

L'armature (10) ainsi réalisée, selon le procédé de fabrication précité, se présente comme suit dans sa phase finale d'élaboration. L'armature comprend ainsi deux ailes (10a - 10b) de configuration triangulaire chacune et triangulaire ensemble séparée par une partie transversale médiane (10c) constituant une nervure centrale. Celle-ci est définie par deux parois parallèles opposées (10c1 - 10c2) raccordées par la partie de liaison (10c3) en définissant entre elles un espace (e) susceptible de constituer un logement et guidage d'un moyen de réglage (11) sous forme de tirette. Des renforts de rigidification (10d) et de raccordement peuvent être prévus, obtenus par emboutissage, entre chacune des parois précitées et la partie aile (10a - 10b) en prolongement. A partir de cette nervure centrale (10c), et sur chacune de ses parois en prolongement avec la partie aile correspondant, sont réalisées au moins deux découpes (10e - 10f) avec chacune une encoche (10g - 10h) en saillie, ces encoches étant orientées côté intérieur de la nervure centrale (10c) et dans le prolongement plan des ailes (10a - 10b). En quelque sorte, et dans l'exemple illustré, quatre encoches (10g - 10h) sont ainsi réalisées et servent de moyen de butée, en forme de languette, et de guidage de la tirette (11) qui peut seulement coulisser dans le volume intérieur formé entre les parois (10c1 - 10c2) de la nervure, mais ne peut pas s'en extraire latéralement. En d'autres termes, la tirette (10) méplate est parfaitement guidée et maintenue dans l'espace formé entre la partie intérieure de ladite nervure et les encoches en saillie.The reinforcement (10) thus produced, according to the aforementioned manufacturing method, is as follows in its final phase of elaboration. The armature thus comprises two wings (10a-10b) of triangular configuration each triangular and set separated by a median transverse portion (10c) constituting a central rib. This is defined by two opposite parallel walls (10c1 - 10c2) connected by the connecting part (10c3) by defining between them a space (e) capable of constituting a housing and guiding of a setting means (11) under zipper shape. Reinforcement reinforcements (10d) and connection may be provided, by stamping, between each of the aforementioned walls and the wing portion (10a - 10b) in extension. From this central rib (10c), and on each of its walls in extension with the corresponding wing portion, are made at least two cuts (10e - 10f) each with a notch (10g - 10h) projecting, these notches being oriented on the inner side of the central rib (10c) and in the plane extension of the wings (10a - 10b). In a way, and in the example shown, four notches (10g - 10h) are thus formed and serve as stop means, tongue-shaped, and guide the pull tab (11) which can only slide in the interior volume formed between the walls (10c1 - 10c2) of the rib, but can not extract laterally. In other words, the zipper (10) flat is perfectly guided and maintained in the space formed between the inner portion of said rib and the projecting notches.

A titre complémentaire, l'aile (10a) de l'armature (10) vient en appui contre la face opposée du coffrage inférieur.In addition, the wing (10a) of the armature (10) abuts against the opposite face of the lower formwork.

L'aile (10b) présente un repli (10b1) perpendiculaire à son plan constituant une face d'appui de la planche utilisée pour faire le coffrage supérieur. Ce repli (10b1) est établi en retrait du chant (10a1) d'extrémité de l'aile (10a) pour correspondre à l'épaisseur des planches. Un dégagement (10m) est formé entre la nervure médiane (10c) et l'extrémité en regard du repli pour faciliter les opérations de pliage en fabrication. La tirette (11) présente une section méplate avec, en extrémité, une patte d'accrochage (11a) contre la face intérieure du coffrage inférieur réalisé, et ce de la manière décrite dans le brevet antérieur.The wing (10b) has a fold (10b1) perpendicular to its plane constituting a bearing surface of the board used to make the upper formwork. This fold (10b1) is set back from the edge (10a1) end of the wing (10a) to match the thickness of the boards. A clearance (10m) is formed between the median rib (10c) and the end opposite the fold to facilitate folding operations in manufacturing. The pull tab (11) has a flat section with, at the end, a hooking tab (11a) against the inner face of the formed lower formwork, and this in the manner described in the prior patent.

L'invention offre de nombreux avantages, tout d'abord une solidité très largement améliorée grâce à l'effet de nervurage réalisé. La fabrication de ladite armature est optimisée et est réalisée en continu, sans apport de composants indépendants. Le coût de fabrication est donc limité. Il n'y a aucune zone de rupture ou d'affaiblissement car l'armature est réalisée et mise en forme selon un seul composant.The invention offers many advantages, first of all a very greatly improved strength thanks to the ribbing effect achieved. The manufacture of said reinforcement is optimized and is carried out continuously, without adding independent components. The manufacturing cost is therefore limited. There is no breaking or weakening zone because the reinforcement is made and shaped according to a single component.

Claims (4)

  1. Method of manufacturing the framework used for quick formworking and installation of walls, slabs, floors and similar, the framework being of the type comprising a triangular configuration with two wings and a median part that is hollow inside to provide a passage for an adjusting means, characterised in that the framework is made from a metallic steel strip wound on a reel and fed to a shaping and cutting machine with progressive tooling which fulfils the functions of, in a first phase, cutting a module for making a framework with external shapes and dimensions in the folded flat situation and then, in a second phase, notching to form pre-cut notches disposed on either side of the transverse median part of the module which fulfil a stop function, and then, in a third phase by progressive folding, forming a transverse central rib on the one hand, designed to constitute, due to its configuration based on two opposing and spaced apart walls, the guide of an adjusting pull-rod and, on the other hand, longitudinally folding one of the parts of the module beyond said rib to form a support plane perpendicular to the plane of the module, and then, in a fourth phase, separating the resultant module.
  2. Framework of the type comprising a triangular configuration with two wings and a median part that is hollow inside to provide a passage for an adjusting means, the vertical edge of the bottom wing being placed so that it is supported on the opposing face of the formwork underneath and the top part of the framework with its other wing incorporating a vertical fold constituting a support face for a board used to make the formwork above, said support system being manufactured by the method as claimed in claim 1, characterised in that it comprises, between its wings (10a - 10b), a transverse median part (10c) constituting a central rib defined by two opposing parallel walls (10c1 - 10c2) joined by a linking part (10c3) so as to define a space (e) constituting the housing and guide means of the adjusting means (11),
    and in that on each of its rib walls and forming an extension to the corresponding wing part, cutouts (10e - 10f) are made so that each forms a protruding tab (10g - 10h) oriented towards the inside of the rib (10c) and constituting a tongue-shaped stop means and guide means for the adjusting means (11).
  3. Framework as claimed in claim 2, characterised in that stiffening and joining means (10d) produced by shaping are disposed between the walls of the central rib (10c) and the part of the wing (10a - 10b) forming an extension.
  4. Framework as claimed in claim 2, characterised in that the wing (10b) has a fold (10b1) perpendicular to its plane and disposed set back from the wing terminal edge (10a1), and a gap (10m) is formed between the median rib (10c) and the end facing the fold.
EP09306162A 2009-02-26 2009-12-01 Method for manufacturing the framework used for quick formworking and installation of walls, slabs, floors and similar elements, and framework obtained according to the method Active EP2199493B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL09306162T PL2199493T3 (en) 2009-02-26 2009-12-01 Method for manufacturing the framework used for quick formworking and installation of walls, slabs, floors and similar elements, and framework obtained according to the method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR0951210A FR2939821B1 (en) 2009-02-26 2009-02-26 METHOD OF MANUFACTURING REINFORCEMENT USED FOR RAPID FORMWORK AND MOUNTING OF WALLS, SLABS, FLOORS AND THE LIKE, AND THE FRAME OBTAINED ACCORDING TO THE PROCESS

Publications (2)

Publication Number Publication Date
EP2199493A1 EP2199493A1 (en) 2010-06-23
EP2199493B1 true EP2199493B1 (en) 2011-04-27

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EP09306162A Active EP2199493B1 (en) 2009-02-26 2009-12-01 Method for manufacturing the framework used for quick formworking and installation of walls, slabs, floors and similar elements, and framework obtained according to the method

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EP (1) EP2199493B1 (en)
AT (1) ATE507362T1 (en)
DE (1) DE602009001180D1 (en)
ES (1) ES2364174T3 (en)
FR (1) FR2939821B1 (en)
PL (1) PL2199493T3 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR3011865B1 (en) * 2013-10-14 2015-12-11 Bc Consulting EQUIPMENT FOR POSITIONING A SLAB FORMWORK ON A BUILDING WALL SUCH AS A WALL
US9834945B2 (en) * 2014-06-10 2017-12-05 Harvel K. Crumley Concrete form tie assembly for monolithic slabs bearing on masonry stem walls

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4428412A1 (en) * 1994-08-11 1996-02-15 Reinhold Beck Bracket with holders for shuttering panels
DE29509938U1 (en) * 1995-06-23 1996-10-24 Schroeder Eckhard Scarf support
FR2863637B1 (en) * 2003-12-16 2008-05-02 Marc Olivier DEVICE FOR SUPPORTING A FORMWORK FOR PRODUCING FLOORS
FR2893058B1 (en) * 2005-11-09 2008-02-15 Service Entretien Batiment DEVICE FOR FACILITATING QUICK FORMWORK AND MOUNTING WALLS, SLABS, FLOORS AND THE LIKE

Also Published As

Publication number Publication date
DE602009001180D1 (en) 2011-06-09
PL2199493T3 (en) 2011-09-30
ATE507362T1 (en) 2011-05-15
FR2939821B1 (en) 2011-11-18
FR2939821A1 (en) 2010-06-18
EP2199493A1 (en) 2010-06-23
ES2364174T3 (en) 2011-08-26

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