EP1371784A1 - Formwork especially for producing solid concrete elements - Google Patents

Formwork especially for producing solid concrete elements Download PDF

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Publication number
EP1371784A1
EP1371784A1 EP02370027A EP02370027A EP1371784A1 EP 1371784 A1 EP1371784 A1 EP 1371784A1 EP 02370027 A EP02370027 A EP 02370027A EP 02370027 A EP02370027 A EP 02370027A EP 1371784 A1 EP1371784 A1 EP 1371784A1
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EP
European Patent Office
Prior art keywords
formwork
frame
envelope
base
strip
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.)
Withdrawn
Application number
EP02370027A
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German (de)
French (fr)
Inventor
Alain Antoniazzi
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Individual
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Individual
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Priority to EP02370027A priority Critical patent/EP1371784A1/en
Publication of EP1371784A1 publication Critical patent/EP1371784A1/en
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    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D27/00—Foundations as substructures
    • E02D27/32—Foundations for special purposes
    • E02D27/42—Foundations for poles, masts or chimneys
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D2200/00—Geometrical or physical properties
    • E02D2200/16—Shapes
    • E02D2200/1628—Shapes rectangular
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D2250/00—Production methods
    • E02D2250/0007—Production methods using a mold

Definitions

  • the invention relates to a formwork.
  • It relates more particularly but not exclusively to formwork for the production of a concrete base or block for anchoring posts metal.
  • this base includes a concrete barrel carried by a sole.
  • Formwork used for this type of product has always been produced on site using planks which the formworker must, on the one hand, cut to the correct length then, on the other hand, assemble using in particular cleats.
  • the circular section provides a perfect distribution in the tube of the hydrostatic thrust.
  • a formwork 1 comprising a thin envelope 2 delimiting a prismatic volume in which a material such as concrete is poured.
  • Band 2 can be split into several pieces.
  • At least two frames will be used.
  • This frame is either external and surrounds the envelope, or is internal.
  • this strip 2 of material thin has transversely folding primers 6 delimiting the different faces of the prism or is composed of different mounted sheets contiguous.
  • folding primers 6 facilitates the shaping of the prisms.
  • the means 3 for hooking the ends of the strip allow, after strip shaping, keeping the ends edge to edge over time to engage the frames 4 around the prismatic envelope.
  • the frames 4 ensure the resistance to the thrust of the concrete during casting and above all preserve the shape, especially when it is prismatic.
  • the number of frames will be variable and the distance between two frames depends their position relative to the base of the formwork.
  • the frames located near the base will be closer than those located closer to the top.
  • the internal faces of the frames can be connected by tensioners.
  • the material used to constitute the envelope is a material synthetic, such as polypropylene, or cardboard, the side facing the interior of the volume receiving the concrete is covered with a waterproof film.
  • the frames 4 have lugs 5A oriented towards the inside or outside of the frame and projection, which pins 5A engages in lights 5B produced without the thickness of band 2.
  • the frame consists of elongated elements assembled together by means of rapid assembly and at least two of the elongated elements called load-bearing elements have pins 5A for hang on the envelope and the other elongated elements have anchoring means on these load-bearing elements.
  • two of the opposite sides of the frame are load-bearing elements having for example an L-shaped section.
  • This base of the L constitutes a support face for the other elements elongated which are also in the form of an L-shaped angle.
  • the vertical face of these elongated elements is relatively wide.
  • a keying system enables the rapid assembly means to be produced and give the rigidity of the frame.
  • the assembly means therefore include lights and keys, the lights being distributed along the longitudinal axis of the four elements. These lights are either circular or cross-shaped to place the key in any sense.
  • These pins 5A are in the form of long tongues greater than the thickness of the strip obtained by partial cutting of one of the angles of the angle iron.
  • the prismatic envelope present along at least three generators of the holes through which are engaged rods (not shown) which, crossing the prism in a radial plane, support the frames 4.
  • Each frame 4 will for example have a T-shaped section, the upper face 7 of the T being applied to the external face of the strip 2 or else an L-shaped section.
  • a frame 4 could consist of two complementary parts, possibly, articulated between them; however, when these two parts are assembled, the frame 4 will remain rigid.
  • the prismatic envelope may have passers-by in which are introduced vertical rods with one end engaged partially in the reference surface gives the formwork good stability.
  • the base of the pole is provided with a soleplate maintained applied to the base by a screw / nut system (not shown).
  • the threaded rods anchored for this purpose in the concrete base have a shape hook to tie down on a cross member of the reinforcement embedded in the base.
  • the prismatic envelope present in at least a radial plane a pair of imprints 15, in particular in cross shape, making it possible to introduce and position the crosspiece 16 through the formwork.
  • Plugs 17 are provided intended to protect the end of the cross-member against oxidation.
  • This reservation box 18 is placed inside the prism before pour the material into the formwork.
  • This reservation box 18 has, for example, a trunk shape of pyramid but could be a cube.
  • This reservation box includes a cover 21 which will be put in place when the concrete is poured into the formwork and removed to place the threaded rods.
  • the frame will incidentally present other lights to place a vertical rod used to locate the bases for alignment of said bases.
  • the maintenance of the frame can be done using parts 40 comprising a head 41 disposed at the outside and a rod 44 passing through the envelope and a U-shaped section 42, the bottom wall of the U is pierced.
  • the end of the rod 44 opposite the head comprises a lug 43 or a passage for a key.
  • the hole in the profile 42 is oblong.
  • This key will be, for example, in the shape of a jumper with its two legs whose thickness increases from the free ends.
  • the envelope may be panels connected to each other by H-shaped or angled assembly profiles.
  • the internal face of the profile 42 constitutes a stop for the minimum coating concrete irons.

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  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Mining & Mineral Resources (AREA)
  • Paleontology (AREA)
  • Civil Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Forms Removed On Construction Sites Or Auxiliary Members Thereof (AREA)

Abstract

The shuttering assembly consists of a thin shell (2) of a rigid sheet material made from a single folded panel of appropriate size for the concrete component to be cast, and an outer rigid frame (4) to receive the shell, attached to the panel by fastenings which hold the frame at a distance from the shell ends. The fastenings are e.g. in the form of lugs on the inside of the frame engaging with slots in the panel, and the frame members are of T- or L-shaped cross-section with flat sides against the panel, which can be made from cardboard with an impermeable coating or a synthetic material.

Description

L'invention se rapporte à un coffrage.The invention relates to a formwork.

Elle se rapporte plus particulièrement mais non exclusivement au coffrage pour la fabrication de socle ou massif en béton pour l'ancrage de poteaux métalliques.It relates more particularly but not exclusively to formwork for the production of a concrete base or block for anchoring posts metal.

Pour l'ancrage de poteaux métalliques, il est nécessaire d'ériger au préalable un socle ou massif en béton.For anchoring metal posts, it is necessary to erect at beforehand a concrete base or massive.

Dans ce socle en béton, sont ancrées des tiges filetées ou barres d'ancrage destinées au maintien du pied du poteau.In this concrete base are anchored threaded rods or anchor bars intended to hold the base of the post.

Généralement, ce socle comprend un fût en béton porté par une semelle.Generally, this base includes a concrete barrel carried by a sole.

Pour couler ce fût, on fait appel à un coffrage.To pour this barrel, we use a formwork.

Depuis toujours les coffrages utilisés pour ce type de produit sont fabriqués sur place à l'aide de planches que le coffreur doit, d'une part, débiter à la bonne longueur puis, d'autre part, assembler à l'aide notamment de tasseaux.Formwork used for this type of product has always been produced on site using planks which the formworker must, on the one hand, cut to the correct length then, on the other hand, assemble using in particular cleats.

Egalement, on connaít des coffrages métalliques mais qui sont plus coûteux et lourds.Also, we know of metal forms but which are more expensive and heavy.

Le temps nécessaire à la construction de ces coffrages est assez long.The time required to build these forms is quite long.

Pour la construction de poteaux en béton de section circulaire, il est connu de faire à appel à des tubes en carton de section circulaire formés par enroulement d'une bande de papier et dans lesquels tubes on coule du béton.For the construction of concrete posts of circular section, it is known to make use of cardboard tubes of circular section formed by winding of a strip of paper and into which tubes concrete is poured.

La section circulaire offre une répartition parfaite dans le tube de la poussée hydrostatique.The circular section provides a perfect distribution in the tube of the hydrostatic thrust.

Pour couler un poteau de section polygonale, on connaít (FR-A-1.513.315) une enveloppe de section polygonale que l'on introduit dans un tube de section circulaire et, dans l'espace délimité par la face interne du tube et la face externe de l'enveloppe polygonale, on introduit un matériau granuleux faiblement compressible de manière à conférer à l'ensemble une résistance suffisante pour soutenir la poussée du béton coulé.To pour a post of polygonal section, we know (FR-A-1.513.315) an envelope of polygonal section which is introduced into a section tube circular and, in the space delimited by the internal face of the tube and the external face of the polygonal envelope, we introduce a slightly granular material compressible so as to give the assembly sufficient strength to support the thrust of poured concrete.

La mise en place d'un tel coffrage est aussi long que la fabrication d'un coffrage classique et, de ce fait, un tel mode de coffrage n'est guère utilisé.The installation of such a formwork is as long as the manufacture of a conventional formwork and, therefore, such a formwork form is hardly used.

Seuls donc les tubes à section circulaire sont utilisés à ce jour et uniquement pour des sections relativement faibles car il est extrêmement difficile de produire des tubes en carton de grand diamètre présentant la résistance nécessaire.Only therefore circular section tubes are used to date and only for relatively small sections because it is extremely difficult to produce large diameter cardboard tubes with resistance necessary.

Ces dispositifs étant relativement volumineux, le coût du transport est également important.As these devices are relatively bulky, the cost of transport is also important.

Un des résultats que l'invention vise à obtenir est un coffrage du type cité plus haut qui remédie à ces inconvénients.One of the results that the invention aims to obtain is a formwork of the type cited above which remedies these drawbacks.

A cet effet, l'invention a pour objet un tel coffrage comprenant :

  • une enveloppe mince en matériau sensiblement rigide de longueur développée sensiblement égale au périmètre du socle à couler et de largeur au moins égale à la hauteur du socle délimitant un volume de section polygonale dans lequel est coulé un matériau tel du béton,
  • au moins un cadre maintenant l'enveloppe en forme et
  • des moyens pour maintenir le cadre précité à un niveau du prisme distant de la base,
    ce coffrage étant caractérisé en ce que l'enveloppe présente des lumières pour l'accrochage des cadres.
To this end, the subject of the invention is such a formwork comprising:
  • a thin envelope of substantially rigid material of developed length substantially equal to the perimeter of the base to be poured and of width at least equal to the height of the base delimiting a volume of polygonal section in which a material such as concrete is poured,
  • at least one frame keeping the envelope shaped and
  • means for maintaining the above-mentioned framework at a level of the prism distant from the base,
    this formwork being characterized in that the envelope has openings for hanging the frames.

L'invention sera bien comprise à l'aide de la description ci-près faites à titre d'exemple non limitatif en regard du dessin ci-annexé qui représente schématiquement :

  • figure 1 : une vue en perspective d'un coffrage selon l'invention,
  • figure 2 : une vue selon II-II de la figure 1,
  • figure 3 : une vue développée de l'enveloppe du coffrage,
  • figure 4 : une vue en perspective d'un accessoire,
  • figure 5 : une coupe verticale d'une variante de réalisation.
The invention will be clearly understood with the aid of the description below made by way of nonlimiting example with regard to the attached drawing which schematically represents:
  • FIG. 1: a perspective view of a formwork according to the invention,
  • FIG. 2: a view along II-II of FIG. 1,
  • FIG. 3: a developed view of the casing envelope,
  • FIG. 4: a perspective view of an accessory,
  • Figure 5: a vertical section of an alternative embodiment.

En se reportant au dessin, on voit que, pour ériger un socle en béton, on fait appel à un coffrage 1 comprenant une enveloppe 2 mince délimitant un volume prismatique dans lequel est coulé un matériau tel du béton.Referring to the drawing, we see that, to erect a concrete base, we uses a formwork 1 comprising a thin envelope 2 delimiting a prismatic volume in which a material such as concrete is poured.

Par volume prismatique, on comprendra tout volume à section polygonale.By prismatic volume, one will understand any volume with polygonal section.

Le coffrage 1 comprend :

  • une bande 2 mince de matériau sensiblement rigide de longueur sensiblement égale au périmètre du socle à couler et de largeur au moins égale à la hauteur du socle,
  • accessoirement mais non nécessairement, des moyens d'accrochage 3 d'une extrémité de la bande 2 sur l'autre extrémité pour former l'enveloppe du prisme.
Formwork 1 includes:
  • a thin strip 2 of substantially rigid material of length substantially equal to the perimeter of the base to be cast and of width at least equal to the height of the base,
  • incidentally but not necessarily, hooking means 3 from one end of the strip 2 on the other end to form the envelope of the prism.

La bande 2 peut être fractionnée en plusieurs morceaux.Band 2 can be split into several pieces.

Le coffrage comprend :

  • au moins un cadre 4 rigide maintenant l'enveloppe en forme et
  • des moyens 5 pour maintenir le cadre précité à un niveau du prisme distant de la base.
The formwork includes:
  • at least one rigid frame 4 keeping the envelope in shape and
  • means 5 for maintaining the above-mentioned frame at a level of the prism distant from the base.

De préférence, on utilisera au moins deux cadres.Preferably, at least two frames will be used.

Ce cadre soit est externe et vient ceindre l'enveloppe, soit est interne.This frame is either external and surrounds the envelope, or is internal.

Pour obtenir un prisme à section polygonale, cette bande 2 de matériau mince présente transversalement des amorces 6 de pliage délimitant les différentes faces du prisme ou alors est composée de différentes feuilles montées jointives.To obtain a prism with a polygonal section, this strip 2 of material thin has transversely folding primers 6 delimiting the different faces of the prism or is composed of different mounted sheets contiguous.

On peut éventuellement placer à l'intérieur du prisme une feuille continue assurant l'étanchéité.You can optionally place a continuous sheet inside the prism sealing.

L'utilisation d'une bande de matériau au lieu d'un prisme préformé et sa mise en forme sur place minimise les coûts de transport.The use of a strip of material instead of a preformed prism and its shaping on site minimizes transportation costs.

La présence de ces amorces 6 de pliage facilite la mise en forme des prismes.The presence of these folding primers 6 facilitates the shaping of the prisms.

A titre d'exemple, on a représenté une bande pour un socle à section rectangulaire.For example, there is shown a strip for a section base rectangular.

Les moyens 3 d'accrochage des extrémités de la bande permettent, après mise en forme de la bande, de maintenir les extrémités bord à bord le temps d'engager les cadres 4 autour de l'enveloppe prismatique.The means 3 for hooking the ends of the strip allow, after strip shaping, keeping the ends edge to edge over time to engage the frames 4 around the prismatic envelope.

Les cadres 4 assurent la résistance à la poussée du béton lors de la coulée et surtout préservent la forme notamment lorsqu'elle est prismatique.The frames 4 ensure the resistance to the thrust of the concrete during casting and above all preserve the shape, especially when it is prismatic.

Le nombre de cadres sera variable et la distance entre deux cadres dépend de leur position par rapport à la base du coffrage.The number of frames will be variable and the distance between two frames depends their position relative to the base of the formwork.

Les cadres situés près de la base seront plus rapprochés que ceux situés plus près du sommet.The frames located near the base will be closer than those located closer to the top.

On peut relier les faces internes des cadres par des tendeurs.The internal faces of the frames can be connected by tensioners.

Le matériau employé pour constituer l'enveloppe est une matière synthétique, tel un polypropylène, ou encore du carton dont la face tournée vers l'intérieur du volume recevant le béton est recouverte d'un film étanche.The material used to constitute the envelope is a material synthetic, such as polypropylene, or cardboard, the side facing the interior of the volume receiving the concrete is covered with a waterproof film.

Pour le maintien des cadres aux différents niveaux du coffrage, les cadres 4 présentent des ergots 5A orientés vers l'intérieur ou l'extérieur du cadre et en saillie, lesquels ergots 5A s'engage dans des lumières 5B réalisé sans l'épaisseur de la bande 2.To maintain the frames at the different levels of the formwork, the frames 4 have lugs 5A oriented towards the inside or outside of the frame and projection, which pins 5A engages in lights 5B produced without the thickness of band 2.

Dans une forme de réalisation, le cadre est constitué d'éléments longilignes assemblés entre eux par des moyens d'assemblage rapide et au moins deux des éléments longilignes dits éléments porteurs présentent des ergots 5A pour s'accrocher sur l'enveloppe et les autres éléments longilignes présentent des moyens d'ancrages sur ces éléments porteurs.In one embodiment, the frame consists of elongated elements assembled together by means of rapid assembly and at least two of the elongated elements called load-bearing elements have pins 5A for hang on the envelope and the other elongated elements have anchoring means on these load-bearing elements.

Dans le cas d'un prisme à quatre cotés, deux des cotés opposés du cadre sont des éléments porteurs ayant par exemple une section en L.In the case of a four-sided prism, two of the opposite sides of the frame are load-bearing elements having for example an L-shaped section.

En position accrochée, le L est retourné. La base du L se trouve alors en partie supérieure.In the hooked position, the L is turned over. The base of the L is then in the top part.

Cette base du L constitue une face d'appui pour les autres éléments longilignes qui se présentent également sous la forme d'une cornière en L.This base of the L constitutes a support face for the other elements elongated which are also in the form of an L-shaped angle.

La face verticale de ces éléments longilignes est relativement large.The vertical face of these elongated elements is relatively wide.

Un système de clavetage permet de réaliser le moyen d'assemblage rapide et de donner la rigidité du cadre.A keying system enables the rapid assembly means to be produced and give the rigidity of the frame.

Les moyens d'assemblage comprennent donc des lumières et des clavettes, les lumières étant réparties au long de l'axe longitudinal des quatre éléments. Ces lumières sont soit circulaires, soit en forme de croix pour placer la clavette dans n'importe quel sens.The assembly means therefore include lights and keys, the lights being distributed along the longitudinal axis of the four elements. These lights are either circular or cross-shaped to place the key in any sense.

Ces ergots 5A se présentent sous la forme de languettes de longueur supérieure à l'épaisseur de la bande obtenue par découpe partielle de l'une des faces de la cornière.These pins 5A are in the form of long tongues greater than the thickness of the strip obtained by partial cutting of one of the angles of the angle iron.

Dans une variante de réalisation, l'enveloppe prismatique présente au long d'au moins trois génératrices des perçages au travers desquels sont engagées des tiges (non représentées) qui, traversant le prisme dans un plan radial, soutiennent les cadres 4.In an alternative embodiment, the prismatic envelope present along at least three generators of the holes through which are engaged rods (not shown) which, crossing the prism in a radial plane, support the frames 4.

Chaque cadre 4 aura par exemple une section en T, la face supérieure 7 du T étant appliquée sur la face externe de la bande 2 ou alors une section en L.Each frame 4 will for example have a T-shaped section, the upper face 7 of the T being applied to the external face of the strip 2 or else an L-shaped section.

Un cadre 4 pourra être constitué de deux parties complémentaires, éventuellement, articulées entre elles ; cependant, lorsque ces deux parties seront assemblées, le cadre 4 restera rigide.A frame 4 could consist of two complementary parts, possibly, articulated between them; however, when these two parts are assembled, the frame 4 will remain rigid.

L'enveloppe prismatique présente éventuellement des passants dans lesquels sont introduites des tiges verticales dont l'une des extrémités engagées partiellement dans la surface de référence confère au coffrage une bonne stabilité.The prismatic envelope may have passers-by in which are introduced vertical rods with one end engaged partially in the reference surface gives the formwork good stability.

Pour la fixation d'un poteau métallique, généralement, le pied du poteau est pourvu d'une semelle maintenue appliquée sur le socle par un système vis/écrou (non représenté). For fixing a metal pole, generally, the base of the pole is provided with a soleplate maintained applied to the base by a screw / nut system (not shown).

Les tiges filetées ancrées à cet effet dans le socle en béton ont une forme de crochet pour s'arrimer sur une traverse du ferraillage noyé dans le socle.The threaded rods anchored for this purpose in the concrete base have a shape hook to tie down on a cross member of the reinforcement embedded in the base.

A cet effet, l'enveloppe prismatique présente dans un plan radial au moins une paire d'empreintes 15 notamment en croix permettant d'introduire et de positionner la traverse 16 au travers du coffrage.For this purpose, the prismatic envelope present in at least a radial plane a pair of imprints 15, in particular in cross shape, making it possible to introduce and position the crosspiece 16 through the formwork.

Sont prévus des bouchons 17 destinés à protéger l'extrémité de la traverse contre l'oxydation.Plugs 17 are provided intended to protect the end of the cross-member against oxidation.

Avantageusement, est prévue une boíte 18, dite de réservation, de section transversale inférieure à la section transversale du prisme.Advantageously, is provided a box 18, called reservation, section transverse lower than the cross section of the prism.

Cette boíte 18 de réservation est placée à l'intérieur du prisme avant de couler le matériau dans le coffrage.This reservation box 18 is placed inside the prism before pour the material into the formwork.

Cette boíte 18 de réservation a, par exemple, une forme en tronc de pyramide mais pourrait être un cube.This reservation box 18 has, for example, a trunk shape of pyramid but could be a cube.

Elle présente, dans un plan parallèle à la grande base, un orifice 19 au travers duquel est engagée la traverse 16 pour l'accrochage des tiges filetées.It has, in a plane parallel to the large base, an orifice 19 at the through which is engaged the crosspiece 16 for the attachment of threaded rods.

Cette boíte de réservation comprend un couvercle 21 qui sera mis en place lorsque le béton est coulé dans le coffrage et retiré pour placer les tiges filetées.This reservation box includes a cover 21 which will be put in place when the concrete is poured into the formwork and removed to place the threaded rods.

Le cadre présentera accessoirement d'autres lumières pour y placer une tige verticale servant à repérer les socles pour un alignement des dits socles.The frame will incidentally present other lights to place a vertical rod used to locate the bases for alignment of said bases.

Notamment, dans la variante de réalisation avec cadre interne, le maintien du cadre peut se faire à l'aide de pièces 40 comprenant une tête 41 disposée à l'extérieur et d'une tige 44 traversant l'enveloppe et un profilé 42 en U dont la paroi de fond du U est percée.In particular, in the variant embodiment with internal frame, the maintenance of the frame can be done using parts 40 comprising a head 41 disposed at the outside and a rod 44 passing through the envelope and a U-shaped section 42, the bottom wall of the U is pierced.

L'extrémité de la tige 44 opposée à la tête comprend un ergot 43 ou un passage pour une clavette.The end of the rod 44 opposite the head comprises a lug 43 or a passage for a key.

Lorsqu'on utilise une tige avec ergot, le trou dans le profilé 42 est oblong.When using a rod with lug, the hole in the profile 42 is oblong.

Il est possible d'utiliser des bagues ou clavettes d'épaisseur variable pour utiliser des enveloppes de différentes épaisseurs avec une pièce 40 d'une seule dimension de longueur de tige.It is possible to use rings or keys of variable thickness to use envelopes of different thicknesses with a 40 piece of a single rod length dimension.

Cette clavette sera, par exemple, en forme de cavalier avec ses deux pattes dont l'épaisseur augmente en partant des extrémités libres.This key will be, for example, in the shape of a jumper with its two legs whose thickness increases from the free ends.

Cette augmentation est, soit progressive, soit par paliers.This increase is either gradual or in stages.

Au lieu que l'enveloppe soit réalisée par pliage d'une bande, il peut s'agir de panneaux reliés entre eux par des profilés d'assemblage en H ou en équerre.Instead of the envelope being produced by folding a strip, it may be panels connected to each other by H-shaped or angled assembly profiles.

La face interne du profilé 42 constitue une butée pour l'enrobage minimal des fers à béton.The internal face of the profile 42 constitutes a stop for the minimum coating concrete irons.

Claims (7)

Coffrage (1) comprenant : une enveloppe (2) mince en matériau sensiblement rigide de longueur sensiblement égale au périmètre du socle à couler et de largeur au moins égale à la hauteur du socle délimitant un volume prismatique dans lequel est coulé un matériau, au moins un cadre (4) rigide maintenant l'enveloppe en forme, des moyens (5) pour maintenir le cadre précité à un niveau du prisme distant de la base,
   ce coffrage étant caractérisé en ce que les moyens (5) pour maintenir le cadre comprennent sur la bande (2) des lumières (5B). Formwork (1) comprising: a thin casing (2) of substantially rigid material of length substantially equal to the perimeter of the base to be poured and of width at least equal to the height of the base delimiting a prismatic volume in which a material is poured, at least one rigid frame (4) keeping the envelope in shape, means (5) for maintaining the above-mentioned frame at a level of the prism distant from the base,
this formwork being characterized in that the means (5) for holding the frame comprise on the strip (2) lights (5B). Coffrage selon la revendication 1 caractérisé en ce que la bande (2) de matériau mince présente transversalement des amorces (6) de pliage délimitant les différentes faces du prisme.Formwork according to claim 1 characterized in that the strip (2) of thin material has transversely bending caps (6) delimiting the different faces of the prism. Coffrage selon la revendication 1 caractérisé en ce que les cadres (4) présentent des ergots (5A) en saillie vers l'intérieur du cadre, lesquels ergots (5A) s'enfoncent dans les lumières de la bande (2).Formwork according to claim 1 characterized in that the frames (4) have lugs (5A) projecting towards the inside of the frame, which lugs (5A) sink into the slots in the strip (2). Coffrage selon la revendication 1 ou 3 caractérisé en ce que chaque cadre (4) a une section en T, la face supérieure (7) du T étant appliquée sur la face externe de la bande (2).Formwork according to claim 1 or 3 characterized in that each frame (4) has a T-section, the upper face (7) of the T being applied to the external face of the strip (2). Coffrage selon la revendication 1 ou 3 caractérisé en ce que les cadres sont positionnés à l'extérieur de l'enveloppe.Formwork according to claim 1 or 3 characterized in that the frames are positioned outside the envelope. Coffrage selon la revendication 1 ou 3 caractérisé en ce que les cadres sont positionnés à l'intérieur de l'enveloppe.Formwork according to claim 1 or 3 characterized in that the frames are positioned inside the envelope. Coffrage selon la revendication 1 caractérisé en ce que l'enveloppe prismatique présente dans un plan radial au moins une paire d'empreintes (15) notamment en croix permettant d'introduire et de positionner une traverse (16) au travers du coffrage.Formwork according to claim 1 characterized in that the prismatic envelope has in a radial plane at least one pair of indentations (15) in particular in a cross shape making it possible to introduce and position a crosspiece (16) through the formwork.
EP02370027A 2002-06-12 2002-06-12 Formwork especially for producing solid concrete elements Withdrawn EP1371784A1 (en)

Priority Applications (1)

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EP02370027A EP1371784A1 (en) 2002-06-12 2002-06-12 Formwork especially for producing solid concrete elements

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EP02370027A EP1371784A1 (en) 2002-06-12 2002-06-12 Formwork especially for producing solid concrete elements

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EP1371784A1 true EP1371784A1 (en) 2003-12-17

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ITRG20100003A1 (en) * 2010-05-04 2011-11-05 Giorgio Fontanella BASIC TIE
FR3047262A1 (en) * 2016-02-01 2017-08-04 Thierry Marquet MODULAR DEVICE FOR FORMING A GROUND ANCHOR POINT

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1675749A (en) * 1927-03-25 1928-07-03 Crawford Prestonm Form for concrete
FR1513315A (en) 1966-09-20 1968-02-16 Cardboard formwork for columns or any other piece of circular or polygonal section
US4673157A (en) * 1985-11-13 1987-06-16 Wells Gordon T Footing form
US4693445A (en) * 1986-07-30 1987-09-15 Sprecace Pantoli Enio Concrete and construction system and modular plank element for the concrete formwork thereof
WO1996022431A1 (en) * 1995-01-17 1996-07-25 Kroken I Mo Aktiebolag Mould and blank
FR2817889A1 (en) * 2000-12-13 2002-06-14 Alain Antoniazzi Shuttering assembly, e.g. for concrete base for metal post, has outer rigid frame and fixings to hold frame against inner shell

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1675749A (en) * 1927-03-25 1928-07-03 Crawford Prestonm Form for concrete
FR1513315A (en) 1966-09-20 1968-02-16 Cardboard formwork for columns or any other piece of circular or polygonal section
US4673157A (en) * 1985-11-13 1987-06-16 Wells Gordon T Footing form
US4693445A (en) * 1986-07-30 1987-09-15 Sprecace Pantoli Enio Concrete and construction system and modular plank element for the concrete formwork thereof
WO1996022431A1 (en) * 1995-01-17 1996-07-25 Kroken I Mo Aktiebolag Mould and blank
FR2817889A1 (en) * 2000-12-13 2002-06-14 Alain Antoniazzi Shuttering assembly, e.g. for concrete base for metal post, has outer rigid frame and fixings to hold frame against inner shell

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ITRG20100003A1 (en) * 2010-05-04 2011-11-05 Giorgio Fontanella BASIC TIE
FR3047262A1 (en) * 2016-02-01 2017-08-04 Thierry Marquet MODULAR DEVICE FOR FORMING A GROUND ANCHOR POINT
WO2017134370A1 (en) * 2016-02-01 2017-08-10 SUBRA, Bertrand Modular device for creating an anchor point in the ground

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