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EP0029486A1 - Shuttering, wall obtained by means of that shuttering and hopper for realizing this wall - Google Patents

Shuttering, wall obtained by means of that shuttering and hopper for realizing this wall Download PDF

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Publication number
EP0029486A1
EP0029486A1 EP80105350A EP80105350A EP0029486A1 EP 0029486 A1 EP0029486 A1 EP 0029486A1 EP 80105350 A EP80105350 A EP 80105350A EP 80105350 A EP80105350 A EP 80105350A EP 0029486 A1 EP0029486 A1 EP 0029486A1
Authority
EP
European Patent Office
Prior art keywords
formwork
wall
elements
internal
panels
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Withdrawn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
EP80105350A
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German (de)
French (fr)
Inventor
Samuel Barbey
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.)
Individual
Original Assignee
Individual
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Filing date
Publication date
Priority claimed from CH1044279A external-priority patent/CH633066A5/en
Application filed by Individual filed Critical Individual
Publication of EP0029486A1 publication Critical patent/EP0029486A1/en
Withdrawn legal-status Critical Current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
    • E04G11/00—Forms, shutterings, or falsework for making walls, floors, ceilings, or roofs
    • E04G11/06—Forms, shutterings, or falsework for making walls, floors, ceilings, or roofs for walls, e.g. curved end panels for wall shutterings; filler elements for wall shutterings; shutterings for vertical ducts
    • E04G11/08—Forms, which are completely dismantled after setting of the concrete and re-built for next pouring
    • E04G11/18—Forms, which are completely dismantled after setting of the concrete and re-built for next pouring for double walls

Definitions

  • the present invention relates to a formwork for the production of a wall having a central cavity intended to receive in particular an insulating material and which comprises recoverable external formwork elements forming two panels arranged in parallel and held together by liaison bodies.
  • Formwork comprising recoverable external panels are well known and widely used in practice.
  • the internal shuttering elements forming the panels delimiting said cavity can only be recovered by using complicated and costly removable shuttering systems. .
  • this embodiment has the major disadvantage that, under the pressure of the poured concrete, the projections, even rounded, which are arranged discontinuously along the spreader bars, sink into the boards of the internal formwork, which practically prevents any subsequent rotation. bars. Formwork removal is therefore not possible.
  • the object of this invention therefore consists in providing a formwork for the realization of a wall having a middle cavity and whose internal formwork panels are easily recoverable after the completion of the wall, which does not have the drawbacks of known formwork, in particular according to the aforementioned French patent.
  • the formwork, object of this invention which is characterized by the fact that it comprises internal formwork elements disposed between the external panels to delimit said cavity, by the fact that the internal elements are kept at a distance from them. from each other by locking members, these members being in contact with said internal elements over their entire length, and applying these elements against stops integral with the external panels, and by the fact that these locking members allow release by rotation according to their longitudinal axis of the internal formwork elements so that they can be recovered after the completion of the wall.
  • the first embodiment of the formwork according to the invention illustrated in Figures 1 to 4 comprises two external formwork panels 1, the formed of elements 2, preferably of wood, assembled longitudinally, these panels 1, 1 'being arranged in parallel and conventionally held to one another by connecting members formed by a clamping rod 3 with external nuts 4, 4 'and a spacer 5, generally made of plastic, with adjusting devices 6, 6 'of the length of these connecting members.
  • the slats 7, 7 ′ integral with the external panels 1, l ′ of the formwork are intended to serve as stops against which the internal formwork elements 11, 11 ′ come to bear.
  • These internal shuttering elements delimit a central cavity 12 and are applied against the slats 7, 7 ′, in the service position, by locking members 13.
  • These locking members 13 consist of elongated elements whose cross section is such that it has at least two different diametrical dimensions, the most large diametrical dimension corresponding to the desired width of the central cavity 12.
  • these locking members can be constituted by two pipes welded to each other longitudinally.
  • the locking members 13 in their locked operating position are supported over their entire length. against the internal formwork elements 11, 11 'and apply these against the slats 7, 7'.
  • the locking member 13 in its locked operating position shown on the upper part of the drawing tends to apply the internal shuttering elements 11a, 11'a against the slats 7, 7 ', while in the unlocked position mounted on the lower part of this drawing, the locking member 13 ′ has been placed by rotation around its longitudinal axis by a quarter turn so that its largest diametrical dimension in section is then parallel to the elements of internal formwork llb, ll'b and that these are no longer held against the slats 7, 7 '.
  • the locking members 13 are provided at their end with a U-shaped element 14 intended to receive a bar 15 of square or circular section serving to simultaneously lock all the locking members 13 in their operating position.
  • a washer 16 is welded between the upper end of the tubes constituting each locking member 13 and the U-shaped part 14. This washer 16 extends beyond the largest dimension in section of the locking member 13 and is intended to bear on the upper end of the internal formwork elements 11, 11 '. This keeps the locking members 13 all at the same height, even if they are not all of the same length, and prevents them from falling to the bottom of the internal formwork if they are lower than that -this, for example as illustrated in FIG. 2. Similarly, all the parts in U 14 are at the same height, and the establishment of the bar 15 simultaneously locking in the service position all the locking members 13 is thereby facilitated.
  • connection members of the external formwork panels and / or the fixing members reinforcing the slats forming abutments with the internal formwork elements can also be used for fixing lattices 17, 17 ′ intended to reinforce the concrete forming the wall.
  • the internal formwork elements 11, 11 ' are introduced between the external panels 1, the and applied against the abutment slats 7, 7' by the locking members 13 placed in the service position, that is to say say with their greatest diametrical dimension in section perpendicular to the internal elements 11, 11 'and with their washer 16 bearing on the upper end of these elements.
  • the locking members 13 are locked in this operating position by means of the bar 15 cooperating with the U-shaped elements 14 with which the ends of the locking members 13 are provided.
  • the concrete can be poured into the spaces provided between the external panels 1, the and the internal elements 11, 11 ′.
  • the locking bar 15 is removed and the locking members 13 are placed in their unlocked position by rotation thereof, one after the other, along their longitudinal axis, so as to place the largest diametrical dimension in section parallel to the internal shuttering elements 11, 11 '.
  • the central cavity 12 formed inside the wall is thus ready to receive the desired material, for example an insulation material such as polyurethane foam.
  • the external panels 1, l ' are recoverable as are the clamping rods 3 and the nuts 4, 4', the other elements of the formwork (spacers, slats-stops, etc.) being them lost.
  • the device intended to serve as a stop for the internal formwork elements 11, 11 ' is mounted in advance in the form of a support element 18 ready for use and replacing the slats 7, 7', the spacer 5, 9, and the reinforcement rods 10 of the first form of execution.
  • Each support element 18 comprises two slats 19, 19 'fixed parallel to each other at a distance determined according to the desired width of the central cavity 12 by means of small boards 20 arranged transversely between the slats 19, 19' .
  • Transverse holes are further drilled in the slats 19, 19 ', their number depending on the total length thereof, and sleeves 21, 21' of variable length thanks to a stop 22, 22 'screwed to the end of each sleeve, are fixed transversely and directed outwards in correspondence with each orifice.
  • the slats 19, 19 'and the transverse boards 20 are made of wood and the sleeves 21, 21' of plastic.
  • Another advantage of this second embodiment compared to the first, apart from the ease and speed of assembly, is that once the fixing rods 13 removed to recover the internal elements 11, 11 'and the external panels 1, the formwork, the insulating material introduced into the formed central cavity 12 also fills the space left free by said rods 23, while in the first embodiment described (see Figure 1), the spacers 5, 9 remaining between the slats 7, 7 ′ after the withdrawal of the clamping rods 3 respectively of fixing 8 tend to form inside the insulation non-insulated passages connecting the two outer and inner portions respectively of the obtained wall thus reducing the efficiency of its insulation.
  • the second embodiment of the formwork according to the invention is further distinguished. in that the outer formwork panels 1 forming the inner wall of the wall are shorter than the outer formwork panels forming it the outer wall of the wall. It is thus possible to construct a wall as illustrated in FIG. 6 having an inner wall 25 shorter than the outer wall 26, this in order to allow the pouring of a slab 27 resting on the upper edge of the inner wall 25 shorter of the wall. Thus, after the formation of the intermediate layer of insulating material 28, the slab 27 is itself perfectly isolated from the outside.
  • an accessory 29 intended to be placed in the service position (see FIG. 5) on the upper edges of the external panels 1, l 'in order to serve as a funnel for pouring concrete simultaneously for the formation of the inner wall 25 and the outer wall 26 of the wall.
  • This funnel 29 comprises two flow chambers 30, 31 having at their lower end an elongated opening and separated from each other by a wall 32 in the form of an inverted U; each flow chamber 30, 31 being intended to supply the interior of the formwork with concrete for the simultaneous formation respectively of the interior wall 25 and the exterior wall 26 of the wall, one 31 of the two chambers is shorter than the other 30.
  • Supports 33 are further fixed horizontally near the lower open end of each flow and are directed outward so that they can rest on the upper edge of the external formwork panels 1, l ' .
  • the formwork according to the invention therefore makes it possible to produce a wall having a central cavity intended to receive an insulating material for example, and to recover after the completion of this wall not only the external formwork panels, but also and easily the elements of internal formwork, which makes its use particularly advantageous, the recovery of internal formwork elements not being possible with known formwork, even with that described by patent FR 534.688 for the reasons already mentioned.
  • the locking members are in contact over their entire length with the internal shuttering elements, which prevents them from sinking into them and thus allows easy rotation around of their longitudinal axis when one wishes to proceed with the formwork and the recovery of these internal formwork elements.

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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)

Abstract

It comprises inner shuttering elements (11, 11') arranged between recoverable outer shuttering panels (1, 1') and delimiting a median cavity (12). These inner shuttering elements are kept apart from one another by locking members (13) which are in contact over their entire length with these inner elements and apply them against stops (7, 7') integral with the outer panels. The locking members have a cross-section such that it possesses at least two different diametral dimensions, and thus permit the release, by rotation about their longitudinal axis, of the inner shuttering elements, it being possible therefore to recover the latter. The median cavity formed in the wall realised after pouring the concrete is intended to receive, for example, an insulating material such as a polyurethane foam. <IMAGE>

Description

La présente invention se rapporte à un coffrage pour la réalisation d'un mur présentant une cavité médiane destinée à recevoir notamment un matériau isolant et qui comporte des éléments de coffrage externes récupérables formant deux panneaux disposés parallèlement et maintenus l'un à l'autre par des organes de liaison.The present invention relates to a formwork for the production of a wall having a central cavity intended to receive in particular an insulating material and which comprises recoverable external formwork elements forming two panels arranged in parallel and held together by liaison bodies.

Des coffrages comportant des panneaux externes récupérables sont bien connus et largement utilisés dans la pratique. Par contre, lorsque l'on désire réaliser un mur présentant une cavité médiane destinée à recevoir par exemple un matériau isolant, les éléments de coffrage internes formant les panneaux délimitant ladite cavité ne sont récupérables qu'en utilisant des systèmes de coffrages démontables compliqués et coûteux.Formwork comprising recoverable external panels are well known and widely used in practice. On the other hand, when it is desired to make a wall having a central cavity intended to receive, for example, an insulating material, the internal shuttering elements forming the panels delimiting said cavity can only be recovered by using complicated and costly removable shuttering systems. .

Pour remédier à cet inconvénient, il a été prévu par le brevet français 534.688 de maintenir en position écartée les parois du coffrage interne au moyen de barres ou tiges présentant des saillies arrondies, par exemple constituées par des rivets, de telle sorte qu'il suffit de faire tourner les barres d'un quart de tour autour de leur axe longitudinal pour libérer les coffrages internes et pouvoir alors les retirer.To remedy this drawback, it was provided by French patent 534.688 to keep the walls of the internal formwork in a spaced-apart position by means of bars or rods having rounded projections, for example constituted by rivets, so that it suffices to rotate the bars a quarter turn around their longitudinal axis to free the internal formwork and then be able to remove them.

Cette réalisation présente toutefois le désavantage majeur que, sous la pression du béton coulé, les saillies même arrondies qui sont disposées de façon discontinue le long des barres d'écartement s'enfoncent dans les planches du coffrage interne, ce qui interdit pratiquement toute rotation subséquente des barres. Le décoffrage n'est donc pas possible.However, this embodiment has the major disadvantage that, under the pressure of the poured concrete, the projections, even rounded, which are arranged discontinuously along the spreader bars, sink into the boards of the internal formwork, which practically prevents any subsequent rotation. bars. Formwork removal is therefore not possible.

Le but de cette invention consiste donc à fournir un coffrage pour la réalisation d'un mur présentant une cavité médiane et dont les panneaux de coffrage internes sont facilement récupérables après la réalisation du mur, qui ne présente pas les inconvénients des coffrages connus, notamment selon le brevet français précité.The object of this invention therefore consists in providing a formwork for the realization of a wall having a middle cavity and whose internal formwork panels are easily recoverable after the completion of the wall, which does not have the drawbacks of known formwork, in particular according to the aforementioned French patent.

Ce but est atteint par le coffrage, objet de cette invention, qui est caractérisé par le fait qu'il comporte des éléments de coffrage internes disposés entre les panneaux externes pour délimiter ladite cavité, par le fait que les éléments internes sont maintenus à distance les uns des autres par des organes de verrouillage, ces organes étant en contact avec lesdits éléments internes sur toute leur longueur,et appliquant ces éléments contre des butées solidaires des panneaux externes, et par le fait que ces organes de verrouillage permettent la libération par rotation selon leur axe longitudinal des éléments de coffrage internes de sorte que ceux-ci soient récupérables après la réalisation du mur.This object is achieved by the formwork, object of this invention, which is characterized by the fact that it comprises internal formwork elements disposed between the external panels to delimit said cavity, by the fact that the internal elements are kept at a distance from them. from each other by locking members, these members being in contact with said internal elements over their entire length, and applying these elements against stops integral with the external panels, and by the fact that these locking members allow release by rotation according to their longitudinal axis of the internal formwork elements so that they can be recovered after the completion of the wall.

Le dessin annexé illustre schématiquement et à titre d'exemple deux formes d'exécution du coffrage selon l'invention.

  • La figure 1 est une vue en perspective d'une portion d'une première forme d'exécution du coffrage.
  • La figure 2 est une vue de dessus d'une portion d'extrémité du coffrage selon la figure 1.
  • La figure 3 est une vue de dessus d'un détail du coffrage selon la figure 1 montrant l'organe de verrouillage dans les deux positions respectivement verrouillée et déverrouillée.
  • La figure 4 est une vue en coupe longitudinale de la partie interne du coffrage selon la figure 1.
  • La figure 5 est une vue en perspective d'une portion d'une seconde forme d'exécution du coffrage, ainsi que d'un accessoire pour le coulage du béton.
  • La figure 6 est une vue en perspective d'une portion 3u mur obtenu avec le coffrage selon la figure 3 et sur lequel a été coulé une dalle.
The accompanying drawing illustrates schematically and by way of example two embodiments of the formwork according to the invention.
  • Figure 1 is a perspective view of a portion of a first embodiment of the formwork.
  • FIG. 2 is a top view of an end portion of the formwork according to FIG. 1.
  • Figure 3 is a top view of a detail of the formwork according to Figure 1 showing the locking member in the two positions respectively locked and unlocked.
  • FIG. 4 is a view in longitudinal section of the internal part of the formwork according to FIG. 1.
  • Figure 5 is a perspective view of a portion of a second embodiment of the formwork, as well as an accessory for pouring concrete.
  • Figure 6 is a perspective view of a portion 3u wall obtained with the formwork according to Figure 3 and on which was poured a slab.

La première forme d'exécution du coffrage selon l'invention illustrée sur les figures 1 à 4 comporte deux panneaux externes de coffrage 1, l' formés d'éléments 2, de préférence en bois, assemblés longitudinalement, ces panneaux 1, 1' étant disposés parallèlement et maintenus de façon conventionnelle l'un à l'autre par des organes de liaison formés d'une tige de serrage 3 avec écrous externes 4, 4' et d'un distanceur 5, généralement en matière plastique, avec dispositifs de réglage 6, 6' de la longueur de ces organes de liaison.The first embodiment of the formwork according to the invention illustrated in Figures 1 to 4 comprises two external formwork panels 1, the formed of elements 2, preferably of wood, assembled longitudinally, these panels 1, 1 'being arranged in parallel and conventionally held to one another by connecting members formed by a clamping rod 3 with external nuts 4, 4 'and a spacer 5, generally made of plastic, with adjusting devices 6, 6 'of the length of these connecting members.

Entre les deux panneaux externes 1, l' sont montées parallèlement et solidairement auxdit panneaux des lattes verticales 7, 7'. Ces lattes 7, 7' sont solidaires des panneaux externes 1, l' par l'entremise des organes de liaison de ceux-ci, les tiges de serrage 3 passant à travers les lattes 7, 7'. Celles-ci peuvent être de plus renforcées longitudinalement, entre lesdits organes de liaison, par des moyens de fixation comprenant une tige de fixation 8, un distanceur 9 et des écrous à ailettes 10. La distance entre les lattes 7, 7' est déterminée par la longueur de la portion médiane du distanceur 5, qui est en trois parties, et de celle du distanceur 9.Between the two external panels 1, l are mounted parallel and integrally to said panels of vertical slats 7, 7 '. These slats 7, 7 'are integral with the external panels 1, l' through the connecting members thereof, the clamping rods 3 passing through the slats 7, 7 '. These can be further reinforced longitudinally, between said connecting members, by fixing means comprising a fixing rod 8, a spacer 9 and wing nuts 10. The distance between the slats 7, 7 'is determined by the length of the middle portion of the spacer 5, which is in three parts, and that of the spacer 9.

Les lattes 7, 7' solidaires des panneaux externes 1, l' du coffrage sont destinées à servir de butées contre lesquelles viennent s'appuyer les éléments de coffrage internes 11, 11'. Ces éléments de coffrage internes délimitent une cavité médiane 12 et sont appliqués contre les lattes 7, 7', en position de service, par des organes de verrouillage 13.The slats 7, 7 ′ integral with the external panels 1, l ′ of the formwork are intended to serve as stops against which the internal formwork elements 11, 11 ′ come to bear. These internal shuttering elements delimit a central cavity 12 and are applied against the slats 7, 7 ′, in the service position, by locking members 13.

Ces organes de verrouillage 13 consistent en des éléments allongés dont la section est telle qu'elle présente au moins deux dimensions diamétrales différentes, la plus grande dimension diamétrale correspondant à la largeur désirée de la cavité médiane 12.These locking members 13 consist of elongated elements whose cross section is such that it has at least two different diametrical dimensions, the most large diametrical dimension corresponding to the desired width of the central cavity 12.

Comme illustré sur les figures 1 à 4, ces organes de verrouillage peuvent être constitués par deux tuyaux soudés l'un à l'autre longitudinalement.As illustrated in Figures 1 to 4, these locking members can be constituted by two pipes welded to each other longitudinally.

Les organes de verrouillage 13 dans leur position de service verrouillée s'appuient sur toute leur longueur . contre les éléments de coffrage internes 11, 11' et appliquent ceux-ci contre les lattes 7, 7'.The locking members 13 in their locked operating position are supported over their entire length. against the internal formwork elements 11, 11 'and apply these against the slats 7, 7'.

Comme illustré sur la figure 3, l'organe de verrouillage 13 dans sa position de service verrouillée montrée sur la partie supérieure du dessin tend à appliquer les éléments de coffrage internes lla, 11'a contre les lattes 7, 7',alors que dans la position déverrouillée montée sur la partie inférieure de ce dessin l'organe de verrouillage 13' a été placé par rotation autour de son axe longitudinal d'un quart de tour de telle sorte que sa plus grande dimension diamétrale en section soit alors parallèle aux éléments de coffrage internes llb, ll'b et que ceux-ci ne soient ainsi plus maintenus contre les lattes 7, 7'.As illustrated in FIG. 3, the locking member 13 in its locked operating position shown on the upper part of the drawing tends to apply the internal shuttering elements 11a, 11'a against the slats 7, 7 ', while in the unlocked position mounted on the lower part of this drawing, the locking member 13 ′ has been placed by rotation around its longitudinal axis by a quarter turn so that its largest diametrical dimension in section is then parallel to the elements of internal formwork llb, ll'b and that these are no longer held against the slats 7, 7 '.

En outre, les organes de verrouillage 13 sont munis à leur extrémité d'un élément en U 14 destiné à recevoir un barreau 15 de section carrée ou circulaire servant à bloquer simultanément tous les organes de verrouillage 13 dans leur position de service.In addition, the locking members 13 are provided at their end with a U-shaped element 14 intended to receive a bar 15 of square or circular section serving to simultaneously lock all the locking members 13 in their operating position.

De plus, une rondelle 16 est soudée entre l'extrémité supérieure des tubes constituant chaque organe de verrouillage 13 et la pièce en U 14. Cette rondelle 16 déborde de la plus grande dimension en section de l'organe de verrouillage 13 et est destinée à prendre appui sur l'extrémité supérieure des éléments de coffrage internes 11, 11'. Ceci permet de maintenir les organes de verrouillage 13 tous à la même hauteur, même s'ils ne sont pas tous de la même longueur, et d'éviter qu'ils ne tombent au fond du coffrage interne s'ils sont moins hauts que celui-ci, par exemple comme illustré sur la figure 2. De même, toutes les pièces en U 14 sont à la même hauteur, et la mise en place du barreau 15 verrouillant simultanément en position de service tous les organes de verrouillage 13 est de ce fait facilitée.In addition, a washer 16 is welded between the upper end of the tubes constituting each locking member 13 and the U-shaped part 14. This washer 16 extends beyond the largest dimension in section of the locking member 13 and is intended to bear on the upper end of the internal formwork elements 11, 11 '. This keeps the locking members 13 all at the same height, even if they are not all of the same length, and prevents them from falling to the bottom of the internal formwork if they are lower than that -this, for example as illustrated in FIG. 2. Similarly, all the parts in U 14 are at the same height, and the establishment of the bar 15 simultaneously locking in the service position all the locking members 13 is thereby facilitated.

Bien entendu, d'autres solutions que celle décrite ci-dessus peuvent être envisagées pour bloquer simultanément en une seule opération tous les organes de verrouillage 13 dans leur position de service, notamment en utilisant un profilé présentant une rainure longitudinale ou des logements de forme et coopérant avec des tétons de forme correspondante dont sont munies les extrémités des organes de verrouillage.Of course, other solutions than that described above can be envisaged for locking all the locking members 13 in their operating position simultaneously in a single operation, in particular by using a profile having a longitudinal groove or shaped housings and cooperating with pins of corresponding shape which are provided with the ends of the locking members.

Enfin, les organes de liaison des panneaux externes de coffrage et/ou les organes de fixation renforçant les lattes formant butées aux éléments de coffrage internes peuvent également servir à la fixation de treillis 17, 17' destinés à armer le béton formant le mur.Finally, the connecting members of the external formwork panels and / or the fixing members reinforcing the slats forming abutments with the internal formwork elements can also be used for fixing lattices 17, 17 ′ intended to reinforce the concrete forming the wall.

Pour le montage et l'utilisation du coffrage selon l'invention et plus particulièrement de la réalisation de celui-ci telle qu'elle.vient d'être décrite à titre d'exemple en référence aux figures 1 à 4, il convient tout d'abord de réaliser le montage des panneaux externes 1, l' et des lattes-butées 7, 7' au moyen des organes de liaison 3, 4, 4', 6, 6', de renforcer longitudinalement les lattes 7, 7' par les organes de fixation 8, 9 et de fixer éventuellement les treillis 17, 17' d'armement. Puis, les éléments de coffrage internes 11, 11' sont introduits entre les panneaux externes 1, l'et appliqués contre les lattes-butées 7, 7' par les organes de verrouillage 13 placés en position de service, c'est-à-dire avec leur plus grande dimension diamétrale en section perpendiculaire aux éléments internes 11, 11' et avec leur rondelle 16 en appui sur l'extrémité supérieure de ces éléments. Enfin, les organes de verrouillage 13 sont bloqués dans cette position de service au moyen du barreau 15 coopérant avec les éléments en U 14 dont sont munies les extrémités des organes de verrouillage 13.For the assembly and use of the formwork according to the invention and more particularly of the embodiment thereof as it has just been described by way of example with reference to Figures 1 to 4, it is suitable 'first of all to assemble the external panels 1, l' and the slats-stops 7, 7 'by means of the connecting members 3, 4, 4', 6, 6 ', to longitudinally reinforce the slats 7, 7' by the fixing members 8, 9 and optionally fixing the arming 17, 17 '. Then, the internal formwork elements 11, 11 'are introduced between the external panels 1, the and applied against the abutment slats 7, 7' by the locking members 13 placed in the service position, that is to say say with their greatest diametrical dimension in section perpendicular to the internal elements 11, 11 'and with their washer 16 bearing on the upper end of these elements. Finally, the locking members 13 are locked in this operating position by means of the bar 15 cooperating with the U-shaped elements 14 with which the ends of the locking members 13 are provided.

Une fois le coffrage ainsi monté, le béton peut être coulé dans les espaces ménagés entre les panneaux externes 1, l'et les éléments internes 11, 11'. Lorsque le béton est suffisamment durci, le barreau de blocage 15 est enlevé et les organes de verrouillage 13 sont placés dans leur position déverrouillée par rotation de ceux-ci, l'un après l'autre, selon leur axe longitudinal, de manière à placer la plus grande dimension diamétrale en section parallèlement aux éléments de coffrage internes 11, 11'. Ces éléments de coffrage internes sont alors libérés et peuvent être ainsi récupérés pour une nouvelle utilisation.Once the formwork thus assembled, the concrete can be poured into the spaces provided between the external panels 1, the and the internal elements 11, 11 ′. When the concrete is sufficiently hardened, the locking bar 15 is removed and the locking members 13 are placed in their unlocked position by rotation thereof, one after the other, along their longitudinal axis, so as to place the largest diametrical dimension in section parallel to the internal shuttering elements 11, 11 '. These internal formwork elements are then released and can thus be recovered for a new use.

La cavité médiane 12 ménagée à l'intérieur du mur est ainsi prête à recevoir le matériau désiré, par exemple un matériau d'isolation comme une mousse de polyuréthane.The central cavity 12 formed inside the wall is thus ready to receive the desired material, for example an insulation material such as polyurethane foam.

Comme dans les autres coffrages de ce type, les panneaux externes 1, l' sont récupérables de même que les tiges de serrage 3 et les écrous 4, 4', les autres éléments du coffrage (distanceurs, lattes-butées, etc.) étant eux perdus.As in other forms of this type, the external panels 1, l 'are recoverable as are the clamping rods 3 and the nuts 4, 4', the other elements of the formwork (spacers, slats-stops, etc.) being them lost.

Dans la seconde forme d'exécution du coffrage selon l'invention illustré à la figure 5, sur laquelle les éléments correspondants à ceux des figures 1 et 2 portent les mêmes chiffres de référence, le dispositif destiné à servir de butée aux éléments de coffrage interne 11, 11' est monté à l'avance sous la forme d'un élément d'appui 18 prêt à l'emploi et remplaçant les lattes 7, 7', le distanceur 5, 9, et les tiges de renforcement 10 de la première forme d'exécution.In the second embodiment of the formwork according to the invention illustrated in FIG. 5, in which the elements corresponding to those of FIGS. 1 and 2 bear the same reference numbers, the device intended to serve as a stop for the internal formwork elements 11, 11 'is mounted in advance in the form of a support element 18 ready for use and replacing the slats 7, 7', the spacer 5, 9, and the reinforcement rods 10 of the first form of execution.

Chaque élément d'appui 18 comprend deux lattes 19, 19' fixées parallèlement l'une à l'autre à une distance déterminée selon la largeur désirée de la cavité médiane 12 au moyen de petites planches 20 disposées transversalement entre les lattes 19, 19'. Des orifices transversaux sont en outre percés dans les lattes 19, 19', leur nombre dépendant de la longueur total de celles-ci, et des manchons 21, 21' de longueur variable grâce à une butée 22, 22' vissée à l'extrémité de chaque manchon, sont fixés transversalement et dirigés vers l'extérieur en correspondance avec chaque orifice. De préférence, les lattes 19, 19' et les planches transversales 20 sont en bois et les manchons 21, 21' en matière plastique.Each support element 18 comprises two slats 19, 19 'fixed parallel to each other at a distance determined according to the desired width of the central cavity 12 by means of small boards 20 arranged transversely between the slats 19, 19' . Transverse holes are further drilled in the slats 19, 19 ', their number depending on the total length thereof, and sleeves 21, 21' of variable length thanks to a stop 22, 22 'screwed to the end of each sleeve, are fixed transversely and directed outwards in correspondence with each orifice. Preferably, the slats 19, 19 'and the transverse boards 20 are made of wood and the sleeves 21, 21' of plastic.

Grâce à cet élément d'appui 18 prêt à l'emploi, le montage du coffrage est facilité et peut être réalisé plus rapidement qu'avec la solution décrite en référence aux figures 1 à 4. Il suffit en effet de faire passer une tige de fixation 23 transversalement dans les manchons 21, 21' et entre les deux lattes 19, 19', puis de fixer les panneaux externes 21' du coffrage, à une distance de chaque latte 19, 19' réglable au moyen des butées 22, 22' par des écrous à ailettes 24, 24' par exemple. La suite des opérations de montage des éléments de coffrage interne 11, 11', de leur fixation au moyen des organes de verrouillage 13, ainsi que des opérations de coulage du béton et de démontage subséquent du coffrage externe et des éléments de coffrage interne sont analogues à celles décrites en référence à la première forme d'exécution illustrée aux figures 1 à 4.Thanks to this support element 18 ready for use, the assembly of the formwork is facilitated and can be carried out more quickly than with the solution described with reference to FIGS. 1 to 4. It suffices in fact to pass a rod of fixing 23 transversely in the sleeves 21, 21 'and between the two slats 19, 19', then fixing the external panels 21 'of the formwork, at a distance from each slat 19, 19' adjustable by means of the stops 22, 22 ' by wing nuts 24, 24 'for example. The sequence of operations for mounting the internal formwork elements 11, 11 ′, for fixing them by means of the locking members 13, as well as for the operations of pouring the concrete and subsequent disassembly of the external formwork and the internal formwork elements are similar. to those described with reference to the first embodiment illustrated in Figures 1 to 4.

Un autre avantage de cette seconde forme d'exécution par rapport à la première, à part la facilité et la rapidité de montage, consiste en ce qu'une fois les tiges de fixation 13 enlevées pour récupérer les éléments internes 11, 11' et les panneaux externes 1, l' du coffrage, le matériau isolant introduit dans la cavité médiane formée 12 remplit également l'espace laissé libre par lesdites tiges 23, alors que dans la première réalisation décrite (voir figure 1), les distanceurs 5, 9 restant entre les lattes 7, 7' après le retrait des tiges de serrage 3 respectivement de fixation 8 tendent à former à l'intérieur de l'isolation des passages non isolés reliant les deux portions respectivement extérieure et intérieure du mur obtenu diminuant ainsi l'efficacité de son isolation.Another advantage of this second embodiment compared to the first, apart from the ease and speed of assembly, is that once the fixing rods 13 removed to recover the internal elements 11, 11 'and the external panels 1, the formwork, the insulating material introduced into the formed central cavity 12 also fills the space left free by said rods 23, while in the first embodiment described (see Figure 1), the spacers 5, 9 remaining between the slats 7, 7 ′ after the withdrawal of the clamping rods 3 respectively of fixing 8 tend to form inside the insulation non-insulated passages connecting the two outer and inner portions respectively of the obtained wall thus reducing the efficiency of its insulation.

Comme illustré sur la figure 5, la seconde forme d'exécution du coffrage selon l'invention se distingue en outre en ce que les panneaux de coffrage externe 1 formant la paroi intérieure du mur sont plus courts que les panneaux de coffrage externe l' formant la paroi extérieure du mur. Il est ainsi possible de constuire un mur tel qu'illustré sur la figure 6 présentant une paroi intérieure 25 plus courte que la paroi extérieure 26, ceci afin de permettre le coulage d'une dalle 27 reposant sur l'arête supérieure de la paroi intérieure 25 plus courte du.mur. Ainsi, après la formation de la couche intermédiaire de matériau isolant 28, la dalle 27 est elle-même parfaitement isolée de l'extérieur.As illustrated in FIG. 5, the second embodiment of the formwork according to the invention is further distinguished. in that the outer formwork panels 1 forming the inner wall of the wall are shorter than the outer formwork panels forming it the outer wall of the wall. It is thus possible to construct a wall as illustrated in FIG. 6 having an inner wall 25 shorter than the outer wall 26, this in order to allow the pouring of a slab 27 resting on the upper edge of the inner wall 25 shorter of the wall. Thus, after the formation of the intermediate layer of insulating material 28, the slab 27 is itself perfectly isolated from the outside.

Enfin, il est prévu encore un accessoire 29 destiné a être posé en position de service (voir figure 5) sur les arêtes supérieures des panneaux extérieurs 1, l' afin de servir d'entonnoir pour le coulage du béton simultanément pour la formation de la paroi intérieure 25 et de la paroi extérieure 26 du mur. Cet entonnoir 29 comporte deux chambres d'écoulement 30, 31 présentant à leur extrémité inférieure une ouverture allongée et séparées l'une de l'autre par une paroi 32 en forme de U renversé ; chaque chambre d'écoulement 30, 31 étant destinée à alimenter en béton l'intérieur du coffrage pour la formation simultanée respectivement de la paroi intérieure 25 et de la paroi extérieure 26 du mur, une 31 des deux chambres est plus courte que l'autre 30. Des supports 33 sont de plus fixés horizontalement à proximité de l'extrémité inférieure ouverte de chaque écoulement et sont dirigés vers l'extérieur de telle sorte qu'ils puissent reposer sur l'arête supérieure des panneaux de coffrage externes 1, l'.Finally, there is also provided an accessory 29 intended to be placed in the service position (see FIG. 5) on the upper edges of the external panels 1, l 'in order to serve as a funnel for pouring concrete simultaneously for the formation of the inner wall 25 and the outer wall 26 of the wall. This funnel 29 comprises two flow chambers 30, 31 having at their lower end an elongated opening and separated from each other by a wall 32 in the form of an inverted U; each flow chamber 30, 31 being intended to supply the interior of the formwork with concrete for the simultaneous formation respectively of the interior wall 25 and the exterior wall 26 of the wall, one 31 of the two chambers is shorter than the other 30. Supports 33 are further fixed horizontally near the lower open end of each flow and are directed outward so that they can rest on the upper edge of the external formwork panels 1, l ' .

Le coffrage selon l'invention permet donc de réaliser un mur présentant une cavité médiane destinée à recevoir un matériau isolant par exemple, et de récupérer après la réalisation de ce mur non seulement les panneaux de coffrage externes, mais également et facilement les éléments de coffrage internes, ce qui rend son utilisation particulièrement avantageuse, la récupération des éléments de coffrage internes n'étant pas possible avec les coffrages connus, même avec celui décrit par le brevet FR 534.688 pour les raisons déjà mentionnées. En effet, avec la solution préconisée par la présente invention, les organes de verrouillage sont en contact sur toute leur longueur avec les éléments de coffrage internes, ce qui empêche qu'ils s'enfoncent dans ceux-ci et permet ainsi une rotation aisée autour de leur axe longitudinal lorsque l'on désire procéder au décoffrage et à la récupération de ces éléments de coffrage internes.The formwork according to the invention therefore makes it possible to produce a wall having a central cavity intended to receive an insulating material for example, and to recover after the completion of this wall not only the external formwork panels, but also and easily the elements of internal formwork, which makes its use particularly advantageous, the recovery of internal formwork elements not being possible with known formwork, even with that described by patent FR 534.688 for the reasons already mentioned. Indeed, with the solution recommended by the present invention, the locking members are in contact over their entire length with the internal shuttering elements, which prevents them from sinking into them and thus allows easy rotation around of their longitudinal axis when one wishes to proceed with the formwork and the recovery of these internal formwork elements.

Claims (12)

1. Coffrage pour la réalisation d'un mur présentant une cavité médiane destinée à recevoir notamment un matériau isolant et comportant des panneaux externes récupérables maintenus l'un à l'autre à distance par des organes de liaison, caractérisé par le fait qu'il comporte des éléments de coffrage internes disposés entre les panneaux externes pour délimiter ladite cavité, par le fait que les éléments internes sont maintenus à distance les uns des autres par des organes de verrouillage, ces organes étant en contact avec lesdits éléments internes sur toute leur longueur et appliquant ces éléments contre des butées solidaires des panneaux externes, et par le fait que ces organes de verrouillage permettent la libération par rotation selon leur axe longitudinal des éléments de coffrage internes de sorte que ceux-ci soient récupérables après la réalisation du mur.1. Formwork for the production of a wall having a median cavity intended to receive in particular an insulating material and comprising recoverable external panels held to one another at a distance by connecting members, characterized in that it comprises internal shuttering elements arranged between the external panels to delimit said cavity, by the fact that the internal elements are kept at a distance from each other by locking members, these members being in contact with said internal elements over their entire length and applying these elements against stops integral with the external panels, and by the fact that these locking members allow the release by rotation along their longitudinal axis of the internal formwork elements so that these are recoverable after the completion of the wall. 2. Coffrage selon la revendication 1, caractérisé par le fait que les butées sont constituées par des lattes montées solidaires des panneaux externes par fixation aux organes de liaison, et qu'elles sont renforcées longitudinalement par des organes de fixation comportant un distanceur.2. Formwork according to claim 1, characterized in that the stops are constituted by slats mounted integral with the external panels by fixing to the connecting members, and that they are reinforced longitudinally by fixing members comprising a spacer. 3. Coffrage selon la revendication 1, caractérisé par le fait que les butées sont constituées par des éléments d'appui prémontés, chaque élément d'appui comportant deux lattes maintenues parallèlement l'une à l'autre au moyen de traverses, ainsi que des manchons dirigés vers l'extérieur perpendiculairement aux lattes et débouchant dans des orifices pratiqués dans ces lattes, ces manchons de longueur variable servant de distanceurs pour ajuster l'ê- paisseur des parois du mur et au passage de tiges de fixation destinées à fixer l'élément d'appui entre les panneaux de coffrage externes.3. Formwork according to claim 1, characterized in that the stops are constituted by pre-assembled support elements, each support element comprising two slats held parallel to one another by means of crosspieces, as well as sleeves directed outwards perpendicularly to the slats and opening into orifices made in these slats, these sleeves of variable length serving as spacers for adjusting the thickness of the walls of the wall and for the passage of fixing rods intended to fix the support element between the external formwork panels. 4. Coffrage selon l'une des revendications 1 à 3, caractérisé par le fait que les organes de verrouillage sont constitués par des éléments allongés dont la section est telle qu'elle présente au moins deux dimensions diamétrales différentes, la grande dimension correspondant à la distance désirée entre les éléments de coffrage internes.4. Formwork according to one of claims 1 to 3, characterized in that the locking members are constituted by elongated elements whose section is such that it has at least two different diametrical dimensions, the large dimension corresponding to the desired distance between internal formwork elements. 5. Coffrage selon la revendication 4, caractérisé par le fait que les organes de verrouillage sont constitués par deux tuyaux assemblés l'un à l'autre longitudinalement.5. Formwork according to claim 4, characterized in that the locking members are constituted by two pipes joined to each other longitudinally. 6. Coffrage selon la revendication 4 ou la revendication 5, caractérisé par le fait que les organes de verrouillage sont munis à l'une de leur extrémité de moyens coopérant, en position de service verrouillée, avec un organe de blocage.6. Formwork according to claim 4 or claim 5, characterized in that the locking members are provided at one of their ends with means cooperating, in the locked operating position, with a locking member. 7. Coffrage selon la revendication 6, caractérisé par le fait que lesdits moyens sont constitués par un élément en forme de U fixé à l'extrémité supérieure de chaque organe de verrouillage, et par le fait que l'organe de blocage est un barreau coopérant simultanément avec tous les éléments en U.7. Formwork according to claim 6, characterized in that said means are constituted by a U-shaped element fixed to the upper end of each locking member, and by the fact that the locking member is a cooperating bar simultaneously with all U-shaped elements. 8. Coffrage selon l'une des revendications 4 à 7, caractérisé par le fait que chaque organe de verrouillage présente à l'une de ses extrémités un élément débordant sa plus grande dimension en section et destiné à venir en position de service en appui sur l'extrémité supérieure des éléments de coffrage internes.8. Formwork according to one of claims 4 to 7, characterized in that each locking member has at one of its ends an element extending beyond its largest dimension in section and intended to come into the service position bearing on the upper end of the internal formwork elements. 9. Coffrage selon les revendications 7 et 8, caractérisé par le fait que ledit élément est une rondelle soudée entre l'extrémité supérieure de chaque organe de verrouillage et l'élément en U.9. Formwork according to claims 7 and 8, characterized in that said element is a washer welded between the upper end of each locking member and the U-shaped element. 10. Coffrage selon la revendication 1 pour la réalisation d'un mur présentant une cavité médiane destinée à recevoir notamment un matériau isolant et une paroi intérieure plus courte que la paroi extérieure et sur l'arête de laquelle est destinée à venir reposer une dalle horizontale, caractérisé par le fait que le panneau de coffrage externe délimitant la paroi intérieure est plus court que celui délimitant la paroi extérieure.10. Formwork according to claim 1 for the production of a wall having a central cavity intended to receive in particular an insulating material and an inner wall shorter than the outer wall and on the edge of which is intended to come to rest a horizontal slab , characterized in that the external formwork panel delimiting the interior wall is shorter than that delimiting the exterior wall. 11. Mur obtenu par le procédé selon la revendication 10.11. Wall obtained by the method according to claim 10. 12. Entonnoir à double chambre d'écoulement pour la réalisation d'un mur selon la revendication 11, caractérisé par le fait qu'il comporte une chambre plus courte que l'autre de manière à alimenter en béton simultanément les deux espaces ménagés entre les panneaux externes et les éléments internes du coffrage selon la revendication 10.12. Funnel with double flow chamber for the production of a wall according to claim 11, characterized in that it comprises a chamber shorter than the other so as to supply concrete simultaneously the two spaces formed between the external panels and the internal elements of the formwork according to claim 10.
EP80105350A 1979-11-23 1980-09-08 Shuttering, wall obtained by means of that shuttering and hopper for realizing this wall Withdrawn EP0029486A1 (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
CH1044279A CH633066A5 (en) 1979-11-23 1979-11-23 Formwork
CH10442/79 1979-11-23
CH3322/80 1980-04-30
CH332280 1980-04-30

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Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2554845A1 (en) * 1983-11-16 1985-05-17 Gtm Batimen Travaux Publ Method for constructing a building with thermal insulation, and buildings thus constructed
ES2063626A2 (en) * 1992-03-05 1995-01-01 Alcoceba Joaquin Alcoceba Process and device for the integral shuttering of reinforced concrete structures
FR2759106A1 (en) * 1997-01-31 1998-08-07 Sols Et Fondations Concrete cavity wall construction procedure
FR2776319A1 (en) * 1998-03-17 1999-09-24 Sols Et Fondations Method for simultaneously constructing two concrete walls separated by empty space
ITMI20081738A1 (en) * 2008-09-30 2010-04-01 Piero Masia DEVICE FOR FORMING STONE WALLS
CN102587665A (en) * 2012-03-21 2012-07-18 苏州第五建筑集团有限公司 Pouring method of coupled shear wall structure
CN106437140A (en) * 2016-07-06 2017-02-22 江苏江中集团有限公司 Vault shear wall anti-explosion and drilling-resistant formwork erecting construction method
US11555315B2 (en) * 2017-10-19 2023-01-17 G.B.E. Tool for the in situ construction of a sandwich wall, and method applying same

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR484403A (en) * 1917-02-05 1917-10-03 Hydraulic Pressed Steel C Improvements to formwork and molding frames
FR534688A (en) * 1921-04-28 1922-03-30 Formwork system for the construction of concrete cavity walls
US2304851A (en) * 1939-08-26 1942-12-15 Schlatter Moses Adjustable form
GB666895A (en) * 1949-03-25 1952-02-20 William George Shipwright Improvements in and relating to shuttering for concrete building constructions
FR2302178A1 (en) * 1975-02-25 1976-09-24 Slokker Bouw Mij Bv CASTING MOLD OF A PLATE-SHAPED ELEMENT

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR484403A (en) * 1917-02-05 1917-10-03 Hydraulic Pressed Steel C Improvements to formwork and molding frames
FR534688A (en) * 1921-04-28 1922-03-30 Formwork system for the construction of concrete cavity walls
US2304851A (en) * 1939-08-26 1942-12-15 Schlatter Moses Adjustable form
GB666895A (en) * 1949-03-25 1952-02-20 William George Shipwright Improvements in and relating to shuttering for concrete building constructions
FR2302178A1 (en) * 1975-02-25 1976-09-24 Slokker Bouw Mij Bv CASTING MOLD OF A PLATE-SHAPED ELEMENT

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2554845A1 (en) * 1983-11-16 1985-05-17 Gtm Batimen Travaux Publ Method for constructing a building with thermal insulation, and buildings thus constructed
ES2063626A2 (en) * 1992-03-05 1995-01-01 Alcoceba Joaquin Alcoceba Process and device for the integral shuttering of reinforced concrete structures
FR2759106A1 (en) * 1997-01-31 1998-08-07 Sols Et Fondations Concrete cavity wall construction procedure
FR2776319A1 (en) * 1998-03-17 1999-09-24 Sols Et Fondations Method for simultaneously constructing two concrete walls separated by empty space
ITMI20081738A1 (en) * 2008-09-30 2010-04-01 Piero Masia DEVICE FOR FORMING STONE WALLS
CN102587665A (en) * 2012-03-21 2012-07-18 苏州第五建筑集团有限公司 Pouring method of coupled shear wall structure
CN106437140A (en) * 2016-07-06 2017-02-22 江苏江中集团有限公司 Vault shear wall anti-explosion and drilling-resistant formwork erecting construction method
US11555315B2 (en) * 2017-10-19 2023-01-17 G.B.E. Tool for the in situ construction of a sandwich wall, and method applying same

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