EP0077579A1 - Shuttering of assembled elements for pouring concrete - Google Patents

Shuttering of assembled elements for pouring concrete Download PDF

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Publication number
EP0077579A1
EP0077579A1 EP82200893A EP82200893A EP0077579A1 EP 0077579 A1 EP0077579 A1 EP 0077579A1 EP 82200893 A EP82200893 A EP 82200893A EP 82200893 A EP82200893 A EP 82200893A EP 0077579 A1 EP0077579 A1 EP 0077579A1
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EP
European Patent Office
Prior art keywords
formwork
panels
face
formwork according
assembly
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
EP82200893A
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German (de)
French (fr)
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EP0077579B1 (en
Inventor
Werner Bomberger
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.)
Giba AG Gesellschaft fur Industrialisierung Im Bauwesen
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Giba AG Gesellschaft fur Industrialisierung Im Bauwesen
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Publication date
Application filed by Giba AG Gesellschaft fur Industrialisierung Im Bauwesen filed Critical Giba AG Gesellschaft fur Industrialisierung Im Bauwesen
Priority to AT82200893T priority Critical patent/ATE13081T1/en
Publication of EP0077579A1 publication Critical patent/EP0077579A1/en
Application granted granted Critical
Publication of EP0077579B1 publication Critical patent/EP0077579B1/en
Expired legal-status Critical Current

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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
    • E04G17/00—Connecting or other auxiliary members for forms, falsework structures, or shutterings
    • E04G17/04—Connecting or fastening means for metallic forming or stiffening elements, e.g. for connecting metallic elements to non-metallic 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
    • E04G9/00—Forming or shuttering elements for general use
    • E04G9/02—Forming boards or similar elements
    • E04G9/05—Forming boards or similar elements the form surface being of plastics

Definitions

  • the present invention relates to a formwork made up of multiple elements assembled for pouring concrete, generally a vertical or formwork formwork.
  • metal formwork offers formwork difficulties and requires the use of formwork oils for demolding.
  • the form face is made of elastomer behind which a filling of rigid foam of high density plastic material which fills the hollow of the panel is attached.
  • the rear part of it is closed either by a metal wall or by a plastic wall which are treated or designed to obtain perfect adhesion with the rigid foam of high density plastic.
  • the edges have sockets whose axes are parallel to the medians of the panels and which are regularly spaced to be opposite one another in the assembly of said panels which are then separated by a grid of profiles T- shaped whose core slides between the panels and has holes opposite the corresponding sockets to allow the passage of assembly bolts.
  • edges are lined with metal strips perpendicular to the shuttering face, with holes facing the grooves of the panels allowing the introduction of the branches of an assembly clamp.
  • This assembly clamp has two branches terminated by claws intended to engage in the holes of the banks and held at their other ends by the heads of an axis, on the oblique bases symmetrical with respect to the median plane perpendicular to the axis of an eccentric cylinder comprising an operating lever, the position of the lever, of the axis and the inclination of the bases being such.
  • the formwork face can be obtained, for example, by coating on a support having a flat and smooth surface with a film of polyurethane elastomer forming after crosslinking a layer having a hardness of about 90 shores and a density of 1.1-1.2. On this film, while it is still pasty, a layer of polyurethane in the liquid state forming foam is deposited.
  • the rear face 21 to 26 previously manufactured is placed on this assembly, by turning it over. This face is pressed strongly on the flat surface by trapping the polyurethane which, by expansion, will fill the entire volume between the formwork face and the rear face.
  • the panel is obtained by injection into a mold of a mixture of polyols and of isocyanates suitable forming a polyurethane foam.
  • a mold of a mixture of polyols and of isocyanates suitable forming a polyurethane foam We choose formulations forming in contact with the walls of the mold a more or less thick skin depending on the temperature. pressure. In this way, we obtain a panel made entirely of polyurethane.
  • the formwork of the invention has the advantage of being composed of panels of reduced dimensions which are, for example, 2.7 0 m high and 0.675 m wide, which include a ribbing on their rear faces allowing them to be manipulated. easily. Their weight is generally less than 45 kg.
  • the internal walls of the hollow envelope of hard and flexible material of the plastic panels are treated so as to ensure the attachment of the foam. This treatment is sometimes unnecessary when it is a formwork face which is uniauely made of polyurethane elastomer.
  • the reinforcement grid it is composed of rectilinear elements that are easy to install.
  • the triangular lattice support structure is made of tube and it is very light.
  • the assembly is therefore easily assembled by hand by one or two men without the need for lifting equipment.
  • the panels 1 to 14 of the formwork of the invention each consist of a hollow casing made of polyurethane elastomer, the rear face being able to be made of polyester.
  • Polyurethane has the advantage of resisting abrasion, tearing, chemicals, oxidation under bad weather and allowing easy stripping.
  • the hollow envelope of the panel comprises a formwork face 15, which corresponds to the shape which one wishes to give to the wall and which is generally planar, a rear rib 16 of reinforcement of the formwork face 15, possibly reinforcements 17, 18 , 19, 20, generally made of steel, inserted into the edges of the panels, and a rear face 21, 22, 23, 24, 26 comprising recesses 27, some of which 28, 29, 30 have a narrower width at the edge than background.
  • the rear face can be reinforced by a reinforcing strip (62) perpendicular to the recesses.
  • the hollow envelope constituted by the shuttering face 15 of the edge reinforcements 17, 18 and the rear faces 21, 22, 23, 24, 25, 26, is filled with a rigid foam of high density plastic material having the property of being compatible and of firmly clinging to the envelope.
  • This filling of plastic material advantageously consists of a rigid high density polyurethane foam of the order of 200 kg / m3.
  • the edges of the panels 1 to 14 have reinforced edges 61 They may be metal strips 17, 18 profiled which can deviate from each other ( Figure 2) and have holes where the claws of the pliers can engage 'assembly as will be seen later.
  • the reinforced edges may also be reinforcements 19, 20 inserted inside the polyurethane foam 31 comprising sockets 32, 33 whose axes are parallel to the medians of the panels 9 and 10 and which are regularly spaced to lie opposite from each other in the assembly of said panels 9 and 10.
  • the shuttering faces 15 extend continuously towards the rear faces 22 which are constituted by plastic material in which is incorporated a glass mast.
  • the formwork further comprises a reinforcing grid formed by profiles 34, 35, 36, 37. These metal profiles are placed at the joint between two panels 1 to 14. They generally have a T-section whose core 38 slides. between the panels and they have holes 39 opposite the corresponding sockets 32, 33 to allow the passage of assembly bolts.
  • assembly bolts 40 are suitably distributed at the joint of the panels 1 to 5.
  • a third element of the formwork system of the invention consists of the support structures 46, 47 in triangulated trellis adapting to the rear of the formwork and in particular to the profile 34 of the reinforcement grid.
  • These support structures each consist of three uprights 48, 49, 50, the uprights 48 and 49 being connected by horizontal crosspieces such as 51 while the upright 50 is connected to the other uprights by oblique bars such as 52.
  • the structure frames 46, 47 is very common in tubular metal construction.
  • the base of the uprights 50 comprises vertical actuating cylinders 53, 54.
  • the uprights 48 are applied against reinforcements 17, 18 or profiles such as 34 thanks to the action of the assembly clamps 45.
  • the weight of the panels 1 to 14, the profiles 34 to 37 and the frames 46, 47 does not separately exceed 45 kg and they can be handled easily by one man.
  • An advantage of the narrower grooves 29 at the bottom than at the edge is that they facilitate the grip of the panel 12 by the person who wants to handle it.
  • a groove with a T-shaped section 30 is provided, making it possible to drown the head of a bolt which serves to fix profiles or the upright 48 and 49 of the frames 46 and 47.
  • the clamp 45 comprises two branches 43, 44 each terminated by claws 41, 42 intended to engage in the holes of the edge reinforcements 17, 18.
  • the branches 43, 44 are held, at their other end, by the heads 53 , 54 of an axis on the oblique bases symmetrically with respect to the median plane perpendicular to the axis 57 of an eccentric cylinder 58 comprising an operating lever 59.
  • the lever 59 makes it possible to rotate the cylinder 58 around the axis 57 and, in this movement, if the branches 43, 44 are kept stationary, they carry out a successive movement away and closer. In the position of Figure 3 (handle 59 down), the branches 43, 44 are widely spaced.
  • branches 43, 44 are brought together and the claws 41, 42 come to grip the reinforcements 17, 18.
  • the axis 57 is eccentric with respect to the outer wall of the cylinder 58. This eccentricity is such that the wall of the cylinder is as far as possible from the claws 41, 42 (FIG. 3) when the branches 43, 44 are separated while that the wall of the cylinder 58 is brought closer to the claws 41, 42 when the branches 43, 44 are brought closer (FIG. 2).

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Mechanical Engineering (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Forms Removed On Construction Sites Or Auxiliary Members Thereof (AREA)
  • Moulds, Cores, Or Mandrels (AREA)

Abstract

There is provided a form of assembled elements for pouring concrete, the form consisting primarily of elements made of synthetic materials. These elements include a molding face of elastomer, a rear face having grooves, an envelope filler of rigid foam, and edges having a reinforced lip and attachment points for assembly means. The form includes a reinforcing framework made of metallic profile members. It is maintained in place by a support scaffold of triangular trellis construction. The elements have a size and weight which permits them to be handled by a single person.

Description

Domaine technique.Technical area.

La présente invention concerne un coffrage en éléments multiples assemblés pour la coulée du béton, généralement un coffrage vertical ou banche.The present invention relates to a formwork made up of multiple elements assembled for pouring concrete, generally a vertical or formwork formwork.

Problème posé.Problem.

Il s'agit de réaliser la coulée de béton entre deux coffrages, généralement verticaux, ou banches, qui font toute la hauteur d'un mur, ce qui se fait depuis longtemps avec des coffrages métalliques. Mais, dans le cas présent, il est opportun de chercher à réaliser cette opération avec des coffrages en éléments relativement légers pour pouvoir être manutentionnés par un seul homme.This involves pouring concrete between two forms, generally vertical, or formwork, which are the full height of a wall, which has been done for a long time with metal forms. But, in the present case, it is advisable to seek to carry out this operation with formwork in relatively light elements in order to be able to be handled by one man.

Etat de la technique antérieure et inconvénients.State of the prior art and drawbacks.

Les coffrages verticaux ont notamment été décrits dans les les brevets français 1.277.437 du 13 octobre 1960 et 2.149.696 du 18 août 1971. Ils comprennent des panneaux verticaux faisant toute la hauteur du mur et pesant plusieurs centaines de kilos et sont maintenus par des membrures de soutien très résistantes mais encombrantes et qu'il est nécessaire de démonter pour éviter leur détérioration lors des transferts ou lors des manutentions sur les chantiers.Vertical formwork has been described in particular in French patents 1,277,437 of October 13, 1960 and 2,149,696 of August 18, 1971. They include vertical panels the full height of the wall and weighing several hundred kilos and are maintained by very strong but bulky support members which must be dismantled to avoid deterioration during transfers or when handling on site.

Ce matériel nécessite donc des appareils de manutention importants qui existent dans de gros chantiers mais qu'il serait trop onéreux d'employed pour de petits chantiers de maisons individuelles, par exemple.This material therefore requires large handling devices which exist in large construction sites but which would be too expensive to employ for small projects of individual houses, for example.

En outre, les coffrages métalliques offrent des difficultés de décoffrage et nécessitent l'emploi d'huiles de décoffrage pour le démoulage.In addition, metal formwork offers formwork difficulties and requires the use of formwork oils for demolding.

Par ailleurs, il est impossible d'y clouer des accessoires, comme on peut le faire sur des coffrages en contreplaqué par exemple.Furthermore, it is impossible to nail accessories to it, as can be done on plywood forms for example.

Ce sont ces divers inconvénients que se propose d'éliminer la présente invention.It is these various drawbacks that the present invention proposes to eliminate.

Exposé de l'invention.Statement of the invention.

Le coffrage de l'invention est caractérisé principalement par la combinaison :

  • a) de panneaux en matière(s) synthétique(s) composés chacun
    • 1- d'une enveloppe creuse en matière(s) dure(s) et souple(s) avec
      • - une face coffrante correspondant à la forme que l'on veut donner à la paroi, ladite face étant constituée en élastomère,
      • - des renforts, notamment en acier, insérés dans les bords,
      • - une face arrière comportant des évidements;
    • 2- d'un remplissage de l'enveloppe en mousse rigide de matière synthétique ayant la propriété d'être compatible et de s'accrocher fermement à l'enveloppe;
    • 3- de rives comportant un rebord renforcé et des points d'attache pour des moyens d'assemblage;
  • b) d'un quadrillage de renforcement par des profilés métalliques se plaçant à la jointure entre deux panneaux;
  • c) d'une charpente de maintien en treillis triangulé s'adaptant, à l'arrière du coffrage, aux profilés de quadrillage de renforcement;
  • d) de moyens d'assemblage simultané des panneaux, du quadrillage de renforcement et de la charpente de maintien;
chacun des éléments à assembler, à savoir les panneaux, le quadrillage de renforcement et la charpente, ayant séparément une taille et un poids qui les rendent manipulables facilement par un seul homme.The formwork of the invention is mainly characterized by the combination:
  • a) panels made of synthetic material (s) each composed
    • 1- a hollow envelope of hard and flexible material (s) with
      • a formwork face corresponding to the shape that one wishes to give to the wall, said face being made of elastomer,
      • - reinforcements, in particular steel, inserted in the edges,
      • - a rear face comprising recesses;
    • 2- a filling of the envelope with rigid foam of synthetic material having the property of being compatible and of clinging firmly to the envelope;
    • 3- of banks comprising a reinforced rim and attachment points for assembly means;
  • b) a grid of reinforcement by metal profiles placed at the joint between two panels;
  • c) a triangular trellis support frame that adapts both, at the rear of the formwork, to the reinforcing grid sections;
  • d) means for simultaneously assembling the panels, the reinforcing grid and the support frame;
each of the elements to be assembled, namely the panels, the reinforcing grid and the frame, having separately a size and a weight which make them easy to handle by a single man.

On comprend qu'une caractéristique importante de l'invention réside dans le fait que la face coffrante est en élastomère derrière laquelle s'accroche un remplissage de mousse rigide de matière plastique à haute densité qui remplit le creux du panneau. La partie arrière de celui-ci est fermée soit par une paroi métallique, soit par une paroi en matière synthétique qui sont traitées ou conçues pour obtenir une adhérence parfaite avec la mousse rigide de matière plastique à haute densité.It is understood that an important characteristic of the invention lies in the fact that the form face is made of elastomer behind which a filling of rigid foam of high density plastic material which fills the hollow of the panel is attached. The rear part of it is closed either by a metal wall or by a plastic wall which are treated or designed to obtain perfect adhesion with the rigid foam of high density plastic.

Suivant une première forme de réalisation, les rives présentent des douilles dont les axes sont parallèles aux médianes des panneaux et qui sont régulièrement espacées pour se trouver en face des unes des autres dans l'assemblage desdits panneaux qui sont alors séparés par un quadrillage de profilés en T dont l'ame se glisse entre les panneaux et comporte des trous en regard des douilles correspondantes pour permettre le passage de boulons d'assemblage.According to a first embodiment, the edges have sockets whose axes are parallel to the medians of the panels and which are regularly spaced to be opposite one another in the assembly of said panels which are then separated by a grid of profiles T- shaped whose core slides between the panels and has holes opposite the corresponding sockets to allow the passage of assembly bolts.

Suivant une deuxième forme de réalisation, les rives sont garnies de bandes métalliques perpendiculaires à la face coffrante, avec des trous en regard de rainures des panneaux permettant l'introduction des branches d'une pince d'assemblage.According to a second embodiment, the edges are lined with metal strips perpendicular to the shuttering face, with holes facing the grooves of the panels allowing the introduction of the branches of an assembly clamp.

Cette pince d'assemblage comporte deux branches terminées par des griffes destinées à s'engager dans les trous des rives et maintenues à leurs autres extrémités par les têtes d'un axe, sur les bases obliques symétriques par rapport au plan médian perpendiculaire à l'axe d'un cylindre excentré comportant une manette de manoeuvre, la position de la manette, de l'axe et l'inclinaison des bases étant telles.This assembly clamp has two branches terminated by claws intended to engage in the holes of the banks and held at their other ends by the heads of an axis, on the oblique bases symmetrical with respect to the median plane perpendicular to the axis of an eccentric cylinder comprising an operating lever, the position of the lever, of the axis and the inclination of the bases being such.

  • - que, dans une position de la manette, les branches soient écartées et la paroi du cylindre soit éloignée au maximum des griffes,- that, in a position of the lever, the branches are separated and the cylinder wall is as far away from the claws,
  • - tandis que, dans une autre position de la manette, diamétralement opposée à la première, les branches soient rapprochées l'une de l'autre et la paroi du cylindre soit rapprochée des griffes pour éventuellement serrer une membrure de la charpente de maintien ou un profilé du quadrillage de renforcement.- while, in another position of the lever, diametrically opposite the first, the branches are brought closer to each other and the cylinder wall is brought closer to the claws to possibly tighten a frame of the support frame or a reinforcement grid profile.

La fabrication d'un panneau selon l'invention peut p.ex. être effectuée comme suit :

  • La face arrière 21 à 26 est en polyester armé de fibres de verre. Cette face est obtenue dans un moule en bois ou en métal. Dans cette opération, on incorpore les renforts 17 à 20 et les points d'attache 32, 33. La polycondensation est effectuée à une température de l'ordre de 60°C.
The production of a panel according to the invention can, for example, be carried out as follows:
  • The rear face 21 to 26 is made of polyester reinforced with glass fibers. This face is obtained in a wooden or metal mold. In this operation, the reinforcements 17 to 20 and the attachment points 32, 33 are incorporated. The polycondensation is carried out at a temperature of the order of 60 ° C.

D'autre part, la face coffrante peut être obtenue, par exemple, par enduction sur un support ayant une surface plane et lisse d'un film d'élastomère de polyuréthane formant après réticulation une couche ayant une dureté d'environ 90 shores et une densité de 1,1-1,2. On dépose sur ce film, pendant qu'il est encore pâteux, une couche de polyuréthane à l'état liquide formant de la mousse. On place sur cet ensemble la face arrière 21 à 26 précédemment fabriquée, en la retournant. Cette face est pressée fortement sur la surface plane en emprisonnant le polyuréthane qui, par expansion, va remplir tout le volume entre la face coffrante et la face arrière.On the other hand, the formwork face can be obtained, for example, by coating on a support having a flat and smooth surface with a film of polyurethane elastomer forming after crosslinking a layer having a hardness of about 90 shores and a density of 1.1-1.2. On this film, while it is still pasty, a layer of polyurethane in the liquid state forming foam is deposited. The rear face 21 to 26 previously manufactured is placed on this assembly, by turning it over. This face is pressed strongly on the flat surface by trapping the polyurethane which, by expansion, will fill the entire volume between the formwork face and the rear face.

L'expansion de la mousse demande environ 10 minutes à température ambiante.It takes about 10 minutes for the foam to expand at room temperature.

Selon une autre méthode de fabrication, le panneau est obtenu par injection dans un moule d'un mélange de polyols et de di-isocyanates approprié formant une mousse de polyuréthane. On choisit des formulations formant au contact des parois du moule une peau plus ou moins épaisse en fonction de la température et de la pression. De cette façon, on obtient un panneau réalisé totalement en polyuréthane.According to another manufacturing method, the panel is obtained by injection into a mold of a mixture of polyols and of isocyanates suitable forming a polyurethane foam. We choose formulations forming in contact with the walls of the mold a more or less thick skin depending on the temperature. pressure. In this way, we obtain a panel made entirely of polyurethane.

Solution au problème, avantages et résultat industriel.Solution to the problem, advantages and industrial result.

Le coffrage de l'invention a l'avantage d'être composé de panneaux de dimensions réduites qui font, par exemple, 2,70 m de haut et 0,675 m de large, qui comnrennent un nervurage sur leurs faces arrières permettant de les manipuler aisément. Leur poids est en général inférieur à 45 kg.The formwork of the invention has the advantage of being composed of panels of reduced dimensions which are, for example, 2.7 0 m high and 0.675 m wide, which include a ribbing on their rear faces allowing them to be manipulated. easily. Their weight is generally less than 45 kg.

Par ailleurs, les parois internes de l'enveloppe creuse en matière dure et souple des panneaux en matière synthétique sont traitées de manière à assurer l'accrochage de la mousse. Ce traitement est parfois inutile quand il s'agit d'une face coffrante qui est uniauement en élastomère de polyuréthane.Furthermore, the internal walls of the hollow envelope of hard and flexible material of the plastic panels are treated so as to ensure the attachment of the foam. This treatment is sometimes unnecessary when it is a formwork face which is uniauely made of polyurethane elastomer.

L'emploi d'une face coffrante en élastomère de polyuréthane évite d'utiliser de l'huile de décoffrage car cette matière est auto-démoulable.The use of a formwork face made of polyurethane elastomer avoids the use of formwork oil because this material is self-demolding.

On peut aussi clouer sur cette face coffrante des accessoires de la même manière qu'on le fait sur une face coffrante en contreplaqué.You can also nail accessories on this form face in the same way as you do on a plywood form face.

Quant au quadrillage de renforcement, il est composé d'éléments rectilignes simples à poser.As for the reinforcement grid, it is composed of rectilinear elements that are easy to install.

Enfin, la charpente de maintien en treillis triangulée est réalisée en tube et elle est très légère.Finally, the triangular lattice support structure is made of tube and it is very light.

L'ensemble s'assemble donc facilement à la main par un ou deux hommes sans nécessiter d'appareils de levage.The assembly is therefore easily assembled by hand by one or two men without the need for lifting equipment.

L'invention sera mieux comprise à l'aide de la description suivante qui en donne quelques exemples non limitatifs de réalisation pratique et qui sont illustrés par les dessins joints.The invention will be better understood with the aid of the following description which gives some nonlimiting examples of practical embodiment and which are illustrated by the accompanying drawings.

Description des figures.Description of the figures.

  • La figure 1 est une coupe verticale d'un coffrage de l'invention, perpendiculairement à la face coffrante montrant un panneau avec des rainures horizontales, une partie de la charpente de maintien en treillis et un moyen d'assemblage de ces deux éléments.Figure 1 is a vertical section of a formwork of the invention, perpendicular to the formwork face showing a panel with horizontal grooves, part of the lattice support frame and a means of assembly of these two elements.
  • La figure 2 est une coupe horizontale du même assemblage de deux panneaux et d'une charpente de maintien au niveau d'une pince d'assemblage.Figure 2 is a horizontal section of the same assembly of two panels and a support frame at an assembly clamp.
  • La figure 3 est une vue en plan de la pince de l'assemblage en position ouverte.Figure 3 is a plan view of the clamp of the assembly in the open position.
  • La figure 4 est une coupe horizontale d'une variante de l'assemblage de deux panneaux au niveau des douilles d'assemblage et du profilé du quadrillage de renforcement.Figure 4 is a horizontal section of a variant of the assembly of two panels at the assembly sleeves and the profile of the reinforcing grid.
  • La figure 5 est une vue en élévation schématique d'un assemblage de plusieurs panneaux de la figure 4.FIG. 5 is a schematic elevation view of an assembly of several panels of FIG. 4.
  • Les figures 6, 7 et 8 sont des coupes verticales de trois variantes de panneaux de l'invention.Figures 6, 7 and 8 are vertical sections of three variants of panels of the invention.
  • La figure 9 est une coupe partielle d'un panneau perpendiculairement à l'axe d'un.évidementavec une largeur plus étroite au bord qu'au fond et destiné, notamment, à y placer la tête d'une vis.FIG. 9 is a partial section of a panel perpendicular to the axis of a recess with a width narrower at the edge than at the bottom and intended, in particular, to place the head of a screw there.
  • La figure 10 est une vue perspective arrière d'un assemblage de panneau supporté par deux charpentes de maintien en treillis triangulé.Figure 10 is a rear perspective view of a panel assembly supported by two triangular lattice support frames.
  • Les figures 11 et 12 sont une vue en élévation de deux variantes de panneaux.Figures 11 and 12 are an elevational view of two alternative panels.
  • La figure 13 est une coupe en C des figures 11 et 12.FIG. 13 is a section in C of FIGS. 11 and 12.
  • La figure 14 est une coupe en AA de la moitié du panneau de la figure 11.FIG. 14 is a section in AA of the half of the panel of FIG. 11.
Description de quelques modes de réalisation.Description of some embodiments.

Les panneaux 1 à 14 du coffrage de l'invention sont composés chacun d'une enveloppe creuse en élastomère de polyuréthane, la face arrière pouvant être en polyester. Le polyuréthane a l'avantage de résister à l'abrasion, au déchirement, aux produits chimiques, à l'oxydation sous les intempéries et de permettre un décoffrage aisé. L'enveloppe creuse du panneau comprend une face coffrante 15, qui correspond à la forme que l'on veut donner à la paroi et qui est généralement plane, un nervurage postérieur 16 de renforcement de la face coffrante 15, éventuellement des renforts 17, 18, 19, 20, généralement en acier, insérés dans les bords des panneaux, et une face arrière 21, 22, 23, 24, 26 comportant des évidements 27 dont certains 28, 29, 30 ont une largeur plus étroite au bord qu'au fond. La face arrière peut être renforcée par une bande renforçante (62) perpendiculaire aux évidements.The panels 1 to 14 of the formwork of the invention each consist of a hollow casing made of polyurethane elastomer, the rear face being able to be made of polyester. Polyurethane has the advantage of resisting abrasion, tearing, chemicals, oxidation under bad weather and allowing easy stripping. The hollow envelope of the panel comprises a formwork face 15, which corresponds to the shape which one wishes to give to the wall and which is generally planar, a rear rib 16 of reinforcement of the formwork face 15, possibly reinforcements 17, 18 , 19, 20, generally made of steel, inserted into the edges of the panels, and a rear face 21, 22, 23, 24, 26 comprising recesses 27, some of which 28, 29, 30 have a narrower width at the edge than background. The rear face can be reinforced by a reinforcing strip (62) perpendicular to the recesses.

L'enveloppe creuse,constituée par la face coffrante 15 des renforts de rive 17, 18 et les faces arrières 21, 22, 23, 24, 25, 26, est remplie d'une mousse rigide de matière plastique à haute densité ayant la propriété d'être compatible et de s'accrocher fermement à l'enveloppe. Ce remplissage de matière plastique est constitué avantageusement par une mousse rigide de polyuréthane à haute densité de l'ordre de 200 kg/m3.The hollow envelope, constituted by the shuttering face 15 of the edge reinforcements 17, 18 and the rear faces 21, 22, 23, 24, 25, 26, is filled with a rigid foam of high density plastic material having the property of being compatible and of firmly clinging to the envelope. This filling of plastic material advantageously consists of a rigid high density polyurethane foam of the order of 200 kg / m3.

Les rives des panneaux 1 à 14 comportent des rebords renforcés 61 Il peut s'agir de bandes métalliques 17, 18 profilées pouvant s'écarter les unes des autres (figure 2) et présenter des trous où pourront s'engager les griffes des pinces d'assemblage comme on le verra ultérieurement. Les bords renforcés peuvent également être des renforts 19, 20 insérés à l'intérieur de la mousse de polyuréthane 31 comportant des douilles 32, 33 dont les axes sont parallèles aux médianes des panneaux 9 et 10 et qui sont régulièrement espacés pour se trouver en face des unes des autres dans l'assemblage desdits panneaux 9 et 10. Il faut remarquer que, dans ce cas, les faces coffrantes 15 se prolongent de façon continue vers les faces arrières 22 qui sont constituées par de la matière plastique dans laquelle est incorporé un mât de verre.The edges of the panels 1 to 14 have reinforced edges 61 They may be metal strips 17, 18 profiled which can deviate from each other (Figure 2) and have holes where the claws of the pliers can engage 'assembly as will be seen later. The reinforced edges may also be reinforcements 19, 20 inserted inside the polyurethane foam 31 comprising sockets 32, 33 whose axes are parallel to the medians of the panels 9 and 10 and which are regularly spaced to lie opposite from each other in the assembly of said panels 9 and 10. It should be noted that, in this case, the shuttering faces 15 extend continuously towards the rear faces 22 which are constituted by plastic material in which is incorporated a glass mast.

Le coffrage comprend en outre un quadrillage de renforcement constitué par des profilés 34, 35, 36, 37. Ces profilés métalliques se placent à la jointure entre deux panneaux 1 à 14. Ils ont généralement une section en T dont l'âme 38 se glisse entre les panneaux et ils comportent des trous 39 en regard des douilles 32, 33 correspondantes pour permettre le passage de boulons d'assemblage.The formwork further comprises a reinforcing grid formed by profiles 34, 35, 36, 37. These metal profiles are placed at the joint between two panels 1 to 14. They generally have a T-section whose core 38 slides. between the panels and they have holes 39 opposite the corresponding sockets 32, 33 to allow the passage of assembly bolts.

Si on se reporte à la figure 5, on voit que les boulons d'assemblage 40 sont convenablement répartis à la jointure des panneaux 1 à 5.Referring to FIG. 5, it can be seen that the assembly bolts 40 are suitably distributed at the joint of the panels 1 to 5.

Si on se reporte aux figures 1 à 2, on voit que les rives sont garnies de renforts ou bandes métalliques 17, 18, perpendiculaires aux faces coffrantes 15 et qui présentent des trous en regard des rainures 27 des panneaux permettant l'introduction des griffes 41, 42 des branches 43, 44 d'une pince d'assemblage 45.If we refer to Figures 1 to 2, we see that the edges are lined with reinforcements or metal strips 17, 18, perpendicular to the shuttering faces 15 and which have holes opposite the grooves 27 of the panels allowing the introduction of the claws 41 , 42 of the branches 43, 44 of an assembly clamp 45.

Un troisième élément du système de coffrage de l'invention est constitué par les charpentes de maintien 46, 47 en treillis triangulé s'adaptant à l'arrière du coffrage et notamment au profilé 34 du quadrillage de renforcement. Ces charpentes de maintien sont constituées chacune de trois montants 48, 49, 50, les montants 48 et 49 étant reliés par des traverses horizontales telles que 51 tandis que le montant 50 est relié aux autres montants par des barres obliques telles que 52. La structure des charpentes 46, 47 est très fréquente en construction métallique tubulaire. La base des montants 50 comprend des vérins de mise à la verticale 53, 54. Les montants 48 s'appliquent contre des renforts 17, 18 ou des profilés tels que 34 grâce à l'action des pinces d'assemblage 45.A third element of the formwork system of the invention consists of the support structures 46, 47 in triangulated trellis adapting to the rear of the formwork and in particular to the profile 34 of the reinforcement grid. These support structures each consist of three uprights 48, 49, 50, the uprights 48 and 49 being connected by horizontal crosspieces such as 51 while the upright 50 is connected to the other uprights by oblique bars such as 52. The structure frames 46, 47 is very common in tubular metal construction. The base of the uprights 50 comprises vertical actuating cylinders 53, 54. The uprights 48 are applied against reinforcements 17, 18 or profiles such as 34 thanks to the action of the assembly clamps 45.

Dans la pratique, le poids des panneaux 1 à 14, des profilés 34 à 37 et des charpentes 46, 47 ne dépasse.séparément pas 45 kg et ils peuvent être manutentionnés facilement par un seul homme. Un avantage des rainures 29 plus étroites au fond que dans le bord est qu'elles facilitent la prise du panneau 12 par la personne qui veut le manutentionner.In practice, the weight of the panels 1 to 14, the profiles 34 to 37 and the frames 46, 47 does not separately exceed 45 kg and they can be handled easily by one man. An advantage of the narrower grooves 29 at the bottom than at the edge is that they facilitate the grip of the panel 12 by the person who wants to handle it.

Dans certains cas, on prévoit une rainure à la section en forme de T 30 permettant de noyer la tête d'un boulon qui sert de fixation à des profilés ou au montant 48 et 49 des charpentes 46 et 47.In certain cases, a groove with a T-shaped section 30 is provided, making it possible to drown the head of a bolt which serves to fix profiles or the upright 48 and 49 of the frames 46 and 47.

Cependant, la plupart du temps, on aura avantage à utiliser la pince d'assemblage 45 qui va maintenant être décrite plus en détail.However, most of the time, it will be advantageous to use the assembly clamp 45 which will now be described in more detail.

La pince 45 comporte deux branches 43, 44 terminées chacune par des griffes 41, 42 destinées à s'engager dans les trous des renforts de rive 17, 18. Les branches 43, 44 sont maintenues, à leur autre extrémité, par les têtes 53, 54 d'un axe sur les bases obliques symétriquement par rapport au plan médian perpendiculaire à l'axe 57 d'un cylindre excentré 58 comportant une manette de manoeuvre 59. La manette 59 permet de faire tourner le cylindre 58 autour de l'axe 57 et, dans ce mouvement, si les branches 43, 44 sont maintenues immobiles, elles effectuent un mouvement successif d'éloignement et de rapprochement. Dans la position de la figure 3 (manette 59 vers le bas), les branches 43, 44 sont largement écartées.The clamp 45 comprises two branches 43, 44 each terminated by claws 41, 42 intended to engage in the holes of the edge reinforcements 17, 18. The branches 43, 44 are held, at their other end, by the heads 53 , 54 of an axis on the oblique bases symmetrically with respect to the median plane perpendicular to the axis 57 of an eccentric cylinder 58 comprising an operating lever 59. The lever 59 makes it possible to rotate the cylinder 58 around the axis 57 and, in this movement, if the branches 43, 44 are kept stationary, they carry out a successive movement away and closer. In the position of Figure 3 (handle 59 down), the branches 43, 44 are widely spaced.

Dans la position de la figure 2 (manette 59 vers le haut), des branches 43, 44 sont rapprochées et les griffes 41, 42 viennent agripper les renforts 17, 18.In the position of FIG. 2 (lever 59 upwards), branches 43, 44 are brought together and the claws 41, 42 come to grip the reinforcements 17, 18.

En outre, l'axe 57 est excentré par rapport à la paroi extérieure du cylindre 58. Cette excentration est telle que la paroi du cylindre est éloignée au maximum des griffes 41, 42 (figure 3) lorsque les branches 43, 44 sont écartées tandis que la paroi du cylindre 58 est rapprochée des griffes 41, 42 lorsque les branches 43, 44 sont rapprochées (figure 2).In addition, the axis 57 is eccentric with respect to the outer wall of the cylinder 58. This eccentricity is such that the wall of the cylinder is as far as possible from the claws 41, 42 (FIG. 3) when the branches 43, 44 are separated while that the wall of the cylinder 58 is brought closer to the claws 41, 42 when the branches 43, 44 are brought closer (FIG. 2).

Dans ces conditions, lorsqu'on rapproche les branches 43, 44 pour coincer les griffes 41, 42 dans les trous correspondants des renforts 17, 18 et que l'on a coincé un montant tel que 48 des charpentes 46, 47 contre les profilés métalliques 34 et que l'on place la pince d'assemblage 45 à la fois contre les rives de deux panneaux tels que 1 à 14 et le cylindre 58 contre le montant 48, la manoeuvre de la manette 59 dans le sens de la flèche 60 a pour effet, non seulement de rapprocher les deux panneaux tels que 1 et 2 mais encore d'appliquer fermement le cylindre 58 contre le montant 48 et le montant 48 contre les panneaux 1 et 2 ou tout au moins le profilé qui est à leur jonction.Under these conditions, when the branches 43, 44 are brought together to wedge the claws 41, 42 into the corresponding holes in the reinforcements 17, 18 and an amount such as 48 of the frames 46, 47 has been wedged against the metal profiles 34 and that the assembly clip 45 is placed both against the edges of two panels such as 1 to 14 and the cylinder 58 against the upright 48, the operation of the lever 59 in the direction of the arrow 60 a for effect, not only to bring the two panels such as 1 and 2 but also to firmly apply the cylinder 58 against the upright 48 and the upright 48 against the panels 1 and 2 or at least the profile which is at their junction.

Claims (13)

1. Coffrage en éléments assemblés pour la coulée du béton, caractérisé par la combinaison : a) de panneaux (1 à 14) en matière(s) synthétique(s) composés chacun 1- d'une enveloppe creuse en matière(s) dure(s) et souple(s) avec - une face coffrante (15) correspondant à la forme que l'on veut donner à la paroi, ladite face étant constituée en élastomère, - des renforts (17', 18, 19, 20) notamment en acier, insérés dans les bords, - une face arrière (21 à 26); 2- d'un remplissage de l'enveloppe en mousse rigide (31) de matière synthétique ayant la propriété d'être compatible et de s'accrocher fermement à l'enveloppe; 3- de rives comportant un rebord renforcé (61) et des points d'attache (32, 33) pour des moyens d'assemblage; b) d'un quadrillage de renforcement par des profilés métalliques (34) se plaçant à la jointure entre deux panneaux; c) d'une charpente de maintien (46, 47) en treillis triangulé s'adaptant, à l'arrière du coffrage, aux profilés (34) de quadrillage de renforcement; d) de moyens d'assemblage simultané des panneaux (1 à 14), du quadrillage de renforcement (34) et de la charpente de maintien (46, 47); chacun des éléments à assembler, à savoir les panneaux (6,8); le quadrillage de renforcement (34) et la charpente (46, 47) ayant séparément une taille et un poids qui les rendent manipulables facilement par un seul homme. 1. Formwork in assembled elements for pouring concrete, characterized by the combination: a) of panels (1 to 14) made of synthetic material (s) each 1- a hollow envelope of hard and flexible material (s) with a formwork face (15) corresponding to the shape that one wishes to give to the wall, said face being made of elastomer, - reinforcements (17 ', 18, 19, 20), in particular in steel, inserted in the edges, - a rear face (21 to 26); 2- a filling of the rigid foam envelope (31) of synthetic material having the property of being compatible and of clinging firmly to the envelope; 3- of banks comprising a reinforced rim (61) and attachment points (32, 33) for assembly means; b) a grid of reinforcement by metal profiles (34) placed at the joint between two panels; c) a support frame (46, 47) in a triangular trellis fitting, at the rear of the formwork, to the reinforcing grid sections (34); d) means for simultaneously assembling the panels (1 to 14), the reinforcement grid (34) and the support frame (46, 47); each of the elements to be assembled, namely the panels (6,8); the reinforcing grid (34) and the frame (46, 47) having separately a size and a weight which make them easy to handle by a single man. 2. Coffrage selon la revendication 1, caractérisé par le fait que la face arrière de l'enveloppe creuse est métallique.2. Formwork according to claim 1, characterized in that the rear face of the hollow envelope is metallic. 3. Coffrage selon la revendication 1, caractérisé par le fait que la face arrière de l'enveloppe creuse est en élastomère de polyuréthane.3. Formwork according to claim 1, characterized in that the rear face of the hollow casing is made of polyurethane elastomer. 4. Coffrage selon la revendication 1, caractérisé par le fait que la face coffrante est en élastomère de polyuréthane.4. Formwork according to claim 1, characterized in that the formwork face is made of polyurethane elastomer. 5. Coffrage selon la revendication 1, caractérisé par le fait que la face arrière de l'enveloppe creuse est en polyester renforcé. 5 . Formwork according to claim 1, characterized in that the rear face of the hollow casing is made of reinforced polyester. 6. Coffrage selon la revendication 1, caractérisé par le fait que les panneaux (1 à 14) comportent une face coffrante en élastomère armé par des fibres de verre ou par un grillage métallique.6. Formwork according to claim 1, characterized in that the panels (1 to 14) have a formwork face made of elastomer reinforced by glass fibers or by a metallic mesh. 7. Coffrage selon la revendication 1, caractérisé par le fait que la face arrière comporte des évidements (27, 28, 29, 30).7. Formwork according to claim 1, characterized in that the rear face has recesses (27, 28, 29, 30). 8. Coffrage selon la revendication 1 et 7, caractérisé par le fait que les évidements(29) des panneaux sont plus étroits au bord qu'au fond.8. Formwork according to claim 1 and 7, characterized in that the recesses (29) of the panels are narrower at the edge than at the bottom. 9. Coffrage selon la revendication 1 èt 7, caractérisé par lé fait que les évidements (27, 28, 29, 30) sont interrompus par une bande renforçante (62) perpendiculaire. 9 . Formwork according to claim 1 and 7, characterized in that the recesses (27, 28, 29, 30) are interrupted by a perpendicular reinforcing strip (62). 10. Coffrage selon la revendication 1, caractérisé par le fait que l'enveloppe comporte un nervurage postérieur (16) de renforcement de la face coffrante. 10 . Formwork according to claim 1, characterized in that the envelope comprises a rear rib (16) for reinforcing the formwork face. 11. Coffrage selon l'une des revendications 1 à 10, caractérisé par le fait que les rives présentent des douilles (32, 33), dont les axes sont parallèles aux médianes des panneaux (9, 10) et qui sont régulièrement espacées pour se trouver en face des unes des autres dans l'assemblage desdits panneaux qui sont alors séparés par un quadrillage de profilés en T (34) dont l'âme se glisse entre les panneaux et comporte des trous (39) en regard des douilles correspondantes pour permettre le passage de boulons d'assemblage.11. Formwork according to one of claims 1 to 10, characterized in that the banks have sockets (32, 33), whose axes are parallel to the medians of the panels (9, 10) and which are regularly spaced to find opposite each other in the assembly of said panels which are then separated by a grid of T- shaped sections (34) whose core slides between the panels and has holes ( 3 9) opposite the corresponding sockets to allow the passage of assembly bolts. 12. Coffrage selon l'une des revendications 1 à lo, caractérisé par le fait que les rives sont garnies de bandes métalliques (17, 18) perpendiculaires à la face coffrante (15), avec des trous en regard de rainures des panneaux (1, 2) permettant l'introduction des branches (43, 44) d'une pince d'assemblage (15).12. Formwork according to one of claims 1 to lo, characterized in that the edges are lined with metal strips (17, 18) perpendicular to the formwork face (15), with holes opposite the grooves of the panels (1 , 2) allowing the introduction of the branches (43, 44) of an assembly clamp (15). 13. Coffrage selon la revendication 12, caractérisé par le fait que la pince d'assemblage (45) comporte deux branches (43, 44) terminées par des griffes (41, 42) destinées à s'engager dans les trous des rives et maintenues à leurs autres extrémités, par les têtes (53, 54) d'un axe, sur les bases obliques (55, 56) symétriques par rapport au plan médian perpendiculaire à l'axe d'un cylindre excentré (58) comportant une manette de manoeuvre (59), la position de la manette (59), de l'axe et l'inclinaison des bases étant telles - que, dans une position de la manette (59), les branches (43, 44) soient écartées et la paroi du cylindre (58) soit éloignée au maximum des griffes (41, 42), - tandis que, dans une autre position de la manette (59), diamétralement opposée à la première, les branches (43,44) soient rapprochées l'une de l'autre et la paroi du cylindre (58) soit rapprochée des griffes (41, 42) pour éventuellement serrer une membrure (48) de la charpente de maintien (46) ou un profilé (34) du quadrillage de renforcement. 1 3 . Formwork according to claim 12, characterized in that the assembly clamp (45) comprises two branches (43, 44) terminated by claws (41, 42) intended to engage in the holes of the edges and held at their other ends, by the heads (53, 54) of an axis, on the oblique bases (55, 56) symmetrical with respect to the median plane perpendicular to the axis of an eccentric cylinder (58) comprising an operating lever ( 59), the position of the lever (59), of the axis and the inclination of the bases being such - that, in a position of the lever (59), the branches (43, 44) are spaced apart and the wall of the cylinder (58) is as far as possible from the claws (41, 42), - while, in another position of the lever (59), diametrically opposite the first, the branches (43,44) are brought closer to each other and the wall of the cylinder (58) is brought closer to the claws ( 41, 42) for possibly tightening a frame (48) of the support frame (46) or a section (34) of the reinforcing grid.
EP82200893A 1981-10-19 1982-07-14 Shuttering of assembled elements for pouring concrete Expired EP0077579B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT82200893T ATE13081T1 (en) 1981-10-19 1982-07-14 COMPOSITE ELEMENTS FORMWORK FOR CONCRETE CASTING.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH6661/81 1981-10-19
CH666181A CH643319A5 (en) 1981-10-19 1981-10-19 FORMWORK IN ASSEMBLED ELEMENTS FOR THE CASTING OF CONCRETE.

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EP0077579A1 true EP0077579A1 (en) 1983-04-27
EP0077579B1 EP0077579B1 (en) 1985-05-02

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US (1) US4463926A (en)
EP (1) EP0077579B1 (en)
AT (1) ATE13081T1 (en)
CA (1) CA1179518A (en)
CH (1) CH643319A5 (en)
DE (1) DE3263392D1 (en)

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GB2219339A (en) * 1988-05-25 1989-12-06 Blackbourne And Mccombe Builders shuttering for casting material such as concrete
WO1990005225A1 (en) * 1988-11-12 1990-05-17 Maier, Josef Clamp for joining switchboards
US5098059A (en) * 1990-04-11 1992-03-24 Sawyer Robert D Concrete forming member for use in concrete casting
WO1996032554A1 (en) * 1995-04-12 1996-10-17 Providence Industries, L.L.C. Reusable concrete form panel sheeting
US5792552A (en) * 1996-04-12 1998-08-11 Providence Industries, L.L.C. Reusable concrete form panel sheeting

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US5625989A (en) * 1995-07-28 1997-05-06 Huntington Foam Corp. Method and apparatus for forming of a poured concrete wall
AU720937B2 (en) * 1996-04-12 2000-06-15 Providence Composite Technologies, Inc. Reusable concrete form panel sheeting
US6874749B2 (en) 2002-04-10 2005-04-05 Joel Wells Construction form system
US8632332B2 (en) * 2009-09-10 2014-01-21 Tf Forming Systems, Inc. Vertical concrete form with removable forming panels
CN101839061A (en) * 2010-05-06 2010-09-22 中国建筑第二工程局有限公司 Unilateral formwork erecting system of cast-in-site concrete arc outer wall body and construction method thereof
CN102797357A (en) * 2012-09-11 2012-11-28 江西省发达建筑集团有限公司 Construction method of single-side mould supporting system
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US5792552A (en) * 1996-04-12 1998-08-11 Providence Industries, L.L.C. Reusable concrete form panel sheeting

Also Published As

Publication number Publication date
CA1179518A (en) 1984-12-18
EP0077579B1 (en) 1985-05-02
US4463926A (en) 1984-08-07
ATE13081T1 (en) 1985-05-15
CH643319A5 (en) 1984-05-30
DE3263392D1 (en) 1985-06-05

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