EP0077579B1 - Shuttering of assembled elements for pouring concrete - Google Patents

Shuttering of assembled elements for pouring concrete Download PDF

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Publication number
EP0077579B1
EP0077579B1 EP82200893A EP82200893A EP0077579B1 EP 0077579 B1 EP0077579 B1 EP 0077579B1 EP 82200893 A EP82200893 A EP 82200893A EP 82200893 A EP82200893 A EP 82200893A EP 0077579 B1 EP0077579 B1 EP 0077579B1
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EP
European Patent Office
Prior art keywords
panels
assembly
face
shuttering according
shuttering
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.)
Expired
Application number
EP82200893A
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German (de)
French (fr)
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EP0077579A1 (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
Original Assignee
Giba AG Gesellschaft fur Industrialisierung Im Bauwesen
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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.
  • thermoplastic plastic material as in patent DE-A No. 2012032.
  • these panels must be manufactured by extrusion, which limits their dimension in the width direction and does not allow to incorporate reinforcements and assembly means only lengthwise.
  • 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 the latter is closed either by a metal wall or by a plastic wall, walls 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 so as 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 trimmed 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.
  • the shuttering 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 expansion of the foam requires approximately 10 min at room temperature.
  • the panel is obtained by injection into a mold of a mixture of polyols and diisocyanates suitable forming a polyurethane foam.
  • a mold of a mixture of polyols and diisocyanates suitable forming a polyurethane foam One chooses formulations forming, in contact with the walls of the mold, a more or less thick skin depending on the temperature and the 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, 2.70 m high and 0.675 m wide, which include a ribbing on their rear faces allowing them to be easily handled .
  • 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 only made of polyurethane elastomer.
  • the reinforcement grid As for the reinforcement grid, it is composed of rectilinear elements that are easy to install. Finally, 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 devices.
  • the panels 1 to 14 of the formwork of the invention each consist of a hollow casing of polyurethane elastomer, the rear face possibly being of polyester.
  • Polyurethane has the advantage of resisting abrasion, tearing, chemicals, oxidation under bad weather and allowing easy formwork.
  • 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 having recesses 27, some of which 28, 29, 40 have a width narrower 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 formwork 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 to be compatible and to hang firmly on the envelope.
  • This filling of plastic material advantageously consists of a rigid high density polyurethane foam of the order of 200 kg / m 3 .
  • 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 (fig. 2) and have holes where the claws of the assembly pliers blage, as we will see later.
  • the reinforced edges can 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.
  • edges are lined with reinforcements or metal strips 17, 18, perpendicular to the formwork 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 assembly pliers 45.
  • a third element of the formwork system of the invention is constituted by the support structures 46, 47 in triangular lattice adapting to the rear of the formwork, and in particular to the profile 34 of the reinforcing grid.
  • These support frames 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 of the 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 grooves 29, which are wider 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 sections or uprights 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 fig. 3 (lever 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 relative 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 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 techniqueTechnical 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 poséProblem

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. However, in the present case, it is expedient to seek to carry out this operation with formwork made of relatively light elements in order to be able to be handled by a single man.

Etat de la technique antérieure et inconvénientsState of the prior art and drawbacks

Les coffrages verticaux ont notamment été décrits dans les brevets français Nos 1277437 du 13 octobre 1960 et 2149696 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 Nos. 1277437 of October 13, 1960 and 2149696 of August 18, 1971. They include vertical panels the full height of the wall and weighing several hundred kilos and are held in place by very strong support members strong but bulky and it is necessary to disassemble to avoid their deterioration during transfers or during handling on construction sites.

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

On a cherché à surmonter ces différences en utilisant des panneaux en matière plastique thermoplastique, comme dans le brevet DE-A No 2012032. Cependant, ces panneaux doivent être fabriqués par extrusion, ce qui limite leur dimension dans le sens de la largeur et ne permet d'incorporer des renforts et des moyens d'assemblage que dans le sens de la longueur.We have sought to overcome these differences by using panels of thermoplastic plastic material, as in patent DE-A No. 2012032. However, these panels must be manufactured by extrusion, which limits their dimension in the width direction and does not allow to incorporate reinforcements and assembly means only lengthwise.

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'inventionStatement of the invention

Le coffrage de l'invention comprend une combinaison de panneaux 1 à 14 en matière synthétique et d'un système d'assemblage et de fixation, les panneaux étant composés d'une enveloppe creuse en matière dure et souple avec une face coffrante 15, des renforts, une face arrière 21 à 26 et d'un remplissage de l'enveloppe en mousse rigide 31 de matière synthétique, caractérisé en ce que:

  • - la face coffrante des panneaux est en élastomère,
  • - la mousse rigide est également en élastomère ayant la propriété de s'accrocher fermement à l'enveloppe,
  • - les panneaux comportent des rives ayant un rebord renforcé 61 et des points d'attache 32, 33 pour des moyens d'assemblage et de fixation 48, et
  • - le coffrage comporte un quadrillage de renforcement par des profilés métalliques 34 se plaçant à la jointure entre deux panneaux, ces panneaux 1 à 14 étant maintenus en place par une charpente de maintien 46, 47 en treillis triangulé s'adaptant, à l'arrière du coffrage, aux profilés 34 de quadrillage de renforcement, et par des 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 ayant séparément une taille et un poids qui les rendent manipulables par un seul homme.
The formwork of the invention comprises a combination of panels 1 to 14 of synthetic material and of an assembly and fixing system, the panels being composed of a hollow envelope of hard and flexible material with a formwork face 15, reinforcements, a rear face 21 to 26 and a filling of the rigid foam envelope 31 of synthetic material, characterized in that:
  • - the formwork face of the panels is made of elastomer,
  • - the rigid foam is also made of elastomer having the property of clinging firmly to the envelope,
  • the panels have edges having a reinforced rim 61 and attachment points 32, 33 for assembly and fixing means 48, and
  • - The formwork includes a reinforcement grid by metal profiles 34 placed at the joint between two panels, these panels 1 to 14 being held in place by a support frame 46, 47 in triangular lattice adapting, at the rear of the formwork, to the reinforcement grid sections 34, and by means of simultaneous assembly of the panels 1 to 14, of the reinforcement grid 34 and of the support frame 46, 47, each of the elements to be assembled having separately a size and a weight that makes them manipulated by one 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, parois 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 the latter is closed either by a metal wall or by a plastic wall, walls 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 les unes des autres dans l'assemblage desdits panneaux qui sont alors séparés par un quadrillage de profilés en T dont l'âme 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 so as 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 sontgarnies 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 trimmed 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 que:

  • - dans une position de la manette, les branches soient écartées et la paroi du cylindre soit éloignée au maximum des griffes,
  • - 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.
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 that:
  • - in a position of the lever, the branches are separated and the cylinder wall is as far away from the claws,
  • - 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 par exemple 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 manufacture 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 polyuréthanne 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 polyuréthanne 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 polyuréthanne qui, par expansion, va remplir tout le volume entre la face coffrante et la face arrière.On the other hand, the shuttering 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 min à température ambiante.The expansion of the foam requires approximately 10 min 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 diisocyanates approprié formant une mousse de polyuréthanne. 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 polyuréthanne.According to another manufacturing method, the panel is obtained by injection into a mold of a mixture of polyols and diisocyanates suitable forming a polyurethane foam. One chooses formulations forming, in contact with the walls of the mold, a more or less thick skin depending on the temperature and the pressure. In this way, we obtain a panel made entirely of polyurethane.

Solution au problème, avantages et résultat industrielSolution 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 comprennent un nervurage sur leurs faces arrière 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, 2.70 m high and 0.675 m wide, which include a ribbing on their rear faces allowing them to be easily handled . 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 uniquement en élastomère de polyuréthanne.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 only made of polyurethane elastomer.

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

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. Enfin, la charpente de maintien en treillis triangulée est réalisée en tube et elle est très légère. L'ensemble s'assemble donc facilement à la main par un ou deux hommes, sans nécessiter d'appareils de levage.As for the reinforcement grid, it is composed of rectilinear elements that are easy to install. Finally, 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 devices.

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 figuresDescription of the figures

  • La fig. 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.Fig. 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 assembling these two elements.
  • La fig. 2 est une coupe horizontale du même assemblage de deux panneaux et d'une charpente de maintien au niveau d'une pince d'assemblage.Fig. 2 is a horizontal section of the same assembly of two panels and a support frame at the level of an assembly clamp.
  • La fig. 3 est une vue en plan de la pince de l'assemblage en position ouverte.Fig. 3 is a plan view of the clamp of the assembly in the open position.
  • La fig. 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.Fig. 4 is a horizontal section of a variant of the assembly of two panels at the assembly sockets and the profile of the reinforcing grid.
  • La fig. 5 est une vue en élévation schématique d'un assemblage de plusieurs panneaux de la fig. 4.Fig. 5 is a schematic elevational view of an assembly of several panels of FIG. 4.
  • Les fig. 6, 7 et 8 sont des coupes verticales de trois variantes de panneaux de l'invention.Figs. 6, 7 and 8 are vertical sections of three variants of panels of the invention.
  • La fig. 9 est une coupe partielle d'un panneau perpendiculairement à l'axe d'un évidement avec 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 fig. 10 est une vue perspective arrière d'un assemblage de panneau supporté par deux charpentes de maintien en treillis triangulé.Fig. 10 is a rear perspective view of a panel assembly supported by two triangular lattice support frames.
  • Les fig. 11 et 12 sont une vue en élévation de deux variantes de panneaux.Figs. 11 and 12 are an elevational view of two variant panels.
  • La fig. 13 est une coupe en C des fig. 11 et 12.Fig. 13 is a section in C of FIGS. 11 and 12.
  • La fig. 14 est une coupe en AA de la moitié du panneau de la fig. 11.Fig. 14 is a section in AA of half of the panel of FIG. 11.
Description de quelques modes de réalisationDescription of some embodiments

Les panneaux 1 à 14 du coffrage de l'invention sont composés chacun d'une enveloppe creuse en élastomère de polyuréthanne, la face arrière pouvant être en polyester. Le polyuréthanne 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, 40 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 of polyurethane elastomer, the rear face possibly being of polyester. Polyurethane has the advantage of resisting abrasion, tearing, chemicals, oxidation under bad weather and allowing easy formwork. 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 having recesses 27, some of which 28, 29, 40 have a width narrower 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 arrière 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 polyuréthanne à haute densité de l'ordre de 200 kg/m3.The hollow envelope, constituted by the formwork 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 to be compatible and to hang firmly on the envelope. This filling of plastic material advantageously consists of a rigid high density polyurethane foam of the order of 200 kg / m 3 .

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 (fig. 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 polyuréthanne 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 les 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 arrière 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 (fig. 2) and have holes where the claws of the assembly pliers blage, as we will see later. The reinforced edges can 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 fig. 5, on voit que les boulons d'assemblage 40 sont convenablement répartis à la jointure des panneaux 1 à 5.If we refer 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 fig. 1 et 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 fig. 1 and 2, it can be seen that the edges are lined with reinforcements or metal strips 17, 18, perpendicular to the formwork 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 assembly pliers 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 is constituted by the support structures 46, 47 in triangular lattice adapting to the rear of the formwork, and in particular to the profile 34 of the reinforcing grid. These support frames 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 of the 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 larges 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 grooves 29, which are wider 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 aux montants 48 et 49 des charpentes 46 et 47.In some 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 sections or uprights 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 fig. 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 fig. 3 (lever 59 down), the branches 43, 44 are widely spaced.

Dans la position de la fig. 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 (fig. 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 (fig. 2).In addition, the axis 57 is eccentric relative 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 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, 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 in the corresponding holes of the reinforcements 17, 18, that 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 the effect not only of bringing the two panels such as 1 and 2 together, but also of firmly applying 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. A shuttering of assembled elements for pouring concrete, comprising panels (1 through 14) of synthetic material, and assembly and fixing means being composed of a hollow envelope of hard and flexible material with a molding face (15), reinforcements, a rearward face (21 through 26) and a filler of the envelope of rigid foam (31) of synthetic material, characterized in that:
- the molding face of the panels is made of an elastomer,
- the rigid foam is also made of an elastomer having the property of adhering firmly to the envelope,
- the panels comprise edges including a reinforced lip (61) and attachment points (32, 33) for the assembly and fixing means (48),
- the reinforcing framework is constituted by metallic profiles (34) located at the junctions between two panels (1 through 14), these panels being held in position by a support scaffold (46, 47) in the form of a triangular trellis adapted, at the rear of the form, to the profiles (34) of the reinforcing framework, and
- by means for simultaneous assembly of the panels (1 through 14), the reinforcing framework (34) and the support scaffold (46,47), each of the elements of the assembly having separately a size and a weight which allow them to be handled by a single person.
2. The shuttering according to Claim 1, characterized in that the rear face of the hollow envelope is metallic.
3. The shuttering according to Claim 1, characterized in that the rear face of the hollow envelope is of polyurethane elastomer.
4. The shuttering according to Claim 1, characterized in that the molding face is of polyurethane elastomer.
5. The shuttering according to Claim 1, characterized in that the rear face of the hollow envelope is of reinforced polyester.
6. The shuttering according to Claim 1, characterized in that the panels (1 through 14) include a mold face made of an elastomer reinforced by glass fibres or by a metallic grid.
7. The shuttering according to Claim 1, characterized in that the rear face has grooves (27,28,29, 30).
8. The shuttering according to Claims 1 and 7, characterized in that the grooves (29) are narrower at the rear face than at the groove base.
9. The shuttering according to Claims 1 and 7, characterized in that the grooves (27, 28, 29, 30) are interrupted by a perpendicular reinforcing band (62).
10. The shuttering according to Claim 1, characterized in that the mold envelope includes a reinforcing grid (14) posterior to the mold face.
11. The shuttering according to one of the Claims 1 to 10, characterized in that the panel edges have sockets (32, 33) of which the axes are parallel to the panel medians (9, 10), the sockets being regularly spaced and being located opposite one another in the assembly of the said panels, the latter being then separated by a framework of T-profiles (34) of which the central web is located between the panels and has holes (39) corresponding to the sockets to permit entry of assembly bolts.
12. The shuttering according to one of the Claims 1 to 10, characterized in that the edges have metallic bands (17, 18) perpendicular to the mold face (15), with holes located with respect to grooves in the panels (1, 2) permitting the introduction of the jaws (43, 44) of an assembly clamp (45).
13. The shuttering according to Claim 12, characterized in that the assembly clamp (45) has two jaws (43, 44) terminating in pins (41, 42) adapted to engage the holes of the panel edges, and maintained at their other extremeties by head members (53, 54) located on oblique bases (55, 56) which are symmetrical with respect to a median plane perpendicular to the axis of an eccentric cylinder (58) which has a manoeuvering handle (59), the position of the handle (59) and the axis and the inclination of the bases being such that
- in one position of the handle (59), the jaws (43, 44) are separated and the cylindrical surface (58) is at its furthest separation from the pins (41,42),
- whereas, in another position of the handle (59) diametrically opposite the first, the jaws (43,44) are close to one another, and the cylinder wall (58) is close to the pins (41,42) so that it may secure a member (48) of the support scaffold (46) or a profiled member (34) of the reinforcing framework.
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.

Publications (2)

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

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Family Applications (1)

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EP82200893A Expired EP0077579B1 (en) 1981-10-19 1982-07-14 Shuttering of assembled elements for pouring concrete

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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
DE8814208U1 (en) * 1988-11-12 1989-01-05 Maier, Josef, 7619 Steinach, De
US5098059A (en) * 1990-04-11 1992-03-24 Sawyer Robert D Concrete forming member for use in concrete casting
SE469481B (en) * 1991-06-25 1993-07-12 Leif Boerje Taraldsson FRONT DISC FOR CONCRETE MOLDING
WO1996032554A1 (en) * 1995-04-12 1996-10-17 Providence Industries, L.L.C. Reusable concrete form panel sheeting
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
US5792552A (en) * 1996-04-12 1998-08-11 Providence Industries, L.L.C. 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
CN103243907A (en) * 2013-05-10 2013-08-14 江苏南通二建集团有限公司 Novel shear wall template reinforcing system

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US2055977A (en) * 1934-07-09 1936-09-29 Hayes Hal Concrete form
US2237366A (en) * 1939-08-26 1941-04-08 Schlatter Moses Waler dog and clamp
FR1296282A (en) * 1961-07-27 1962-06-15 Futura G M B H Formwork for concrete or similar constructions
US3475265A (en) * 1966-02-28 1969-10-28 Schokbeton Products Corp Lightweight mold for the forming of concrete
GB1314336A (en) * 1969-08-01 1973-04-18 Laing & Son Ltd John Shuttering for the construction of concrete structures
FR2058535A5 (en) * 1969-09-03 1971-05-28 Geisert Hans Plastic faced sandwich shuttering panel
US3669401A (en) * 1970-03-13 1972-06-13 Abelow Joseph Fiber glass reinforced mold for cementitious building
BE793421A (en) * 1971-12-28 1973-04-16 Coffrages Modernes Formwork for concrete
JPS5056413A (en) * 1973-09-21 1975-05-17
GB2026072A (en) * 1977-11-03 1980-01-30 Roberts P Formwork panel
IT1095271B (en) * 1978-05-31 1985-08-10 Martinenghi Angelo PANELS FOR THE CONSTRUCTION OF FORMWORKS WITHOUT THE AID OF EXTERNAL STRUCTURES FOR SUPPORTING THE SAME PANELS, FOR THE CONCRETE CASTING OF VERTICAL WALLS OF VARIOUS THICKNESS INCLUDED BETWEEN TWO HORIZONTAL SLABS, ONE LOWER AND ONE UPPER, ONE
US4280677A (en) * 1979-05-03 1981-07-28 Moshe Shahar Shuttering

Also Published As

Publication number Publication date
US4463926A (en) 1984-08-07
CH643319A5 (en) 1984-05-30
EP0077579A1 (en) 1983-04-27
DE3263392D1 (en) 1985-06-05
CA1179518A (en) 1984-12-18
ATE13081T1 (en) 1985-05-15

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