EP2211000A1 - Form panel for formworking a concrete wall - Google Patents

Form panel for formworking a concrete wall Download PDF

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Publication number
EP2211000A1
EP2211000A1 EP10151226A EP10151226A EP2211000A1 EP 2211000 A1 EP2211000 A1 EP 2211000A1 EP 10151226 A EP10151226 A EP 10151226A EP 10151226 A EP10151226 A EP 10151226A EP 2211000 A1 EP2211000 A1 EP 2211000A1
Authority
EP
European Patent Office
Prior art keywords
stiffeners
formwork
sheet
banche
panel
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP10151226A
Other languages
German (de)
French (fr)
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EP2211000B1 (en
Inventor
Jacques Buysschaert
Thierry Braud
Patrick Micheneau
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.)
Sateco SA
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Sateco SA
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Sateco SA filed Critical Sateco SA
Priority to EP11179390A priority Critical patent/EP2400080A1/en
Publication of EP2211000A1 publication Critical patent/EP2211000A1/en
Application granted granted Critical
Publication of EP2211000B1 publication Critical patent/EP2211000B1/en
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Anticipated expiration legal-status Critical

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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
    • E04G9/00—Forming or shuttering elements for general use
    • E04G9/02—Forming boards or similar elements
    • E04G9/06—Forming boards or similar elements the form surface being of metal
    • 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
    • E04G17/002—Workplatforms, railings; Arrangements for pouring concrete, attached to the form
    • 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
    • E04G2011/067—Integrated forms comprising shuttering skin, bracing or strutting arrangements, workplatforms and railings

Definitions

  • the present invention relates to a formwork shuttering of a concrete wall, of the type described in the preamble of claim 1.
  • the boards are large formwork. They are designed to assemble one above the other and next to each other to form very large surfaces of formwork concrete sails.
  • the banches are also provided with platforms allowing work for operators pouring concrete.
  • metal sheets whose form surface is made by a metal sheet for example steel.
  • the formwork thus comprises a formwork sheet and, to prevent buckling of the formwork sheet and to allow the addition of various accessories, a plurality of longitudinal stiffeners welded to the rear face of the formwork sheet.
  • the stiffeners comprise, for example, four end stiffeners welded along the end edges of the form sheet, and a plurality of vertical intermediate stiffeners, for example of circular section, extending in parallel between the lateral end stiffeners. . Horizontal stiffeners may also be provided.
  • An object of the invention is to provide a shuttering formwork whose weight is relatively low.
  • the invention relates to anadohe of the aforementioned type, characterized by the characterizing part of claim 1.
  • the figure 1 illustrates a formwork panel 2 of a concrete wall, more particularly a concrete veil.
  • the formwork 2 comprises a formwork body 4 defining a formwork surface 5.
  • a corbel work platform 6 is mounted at the rear of the formwork body 4, at its upper end, and provided with a ladder 8. The platform 6 ensures the access of the operators at the top of the block 2, to pour the concrete.
  • Two ground support struts 10 are hinged to the rear of the formwork body 4 to ensure its stability on the ground.
  • the formwork body 4 more particularly comprises, as illustrated in FIGS. Figures 1 to 3 , a formwork sheet 12 having a front face 14 ( Figures 3 to 5 defining the form surface 5, a plurality of stiffeners 16, 17 arranged against the opposite rear face 15 of the formwork sheet 12, and a rear closure plate 18 disposed against the stiffeners 16, 17.
  • the rear panel 18 closes the formwork body 4 to give it a general box shape .
  • the shuttering body 4 is further provided, in a conventional manner and as illustrated on the figures 1 and 2 , feet jacks 20 for raising the panel 2, vertical assembly means 22 with a lower panel and with an upper panel, lateral assembly means 24 on each side of the panel 2, with a side panel, and four blocks 26 for receiving clamping rods for clamping the panels 2 arranged facing each other.
  • the formwork sheet 12 has a general shape of flat plate and rectangular outline. It thus has two upper edges 30A and lower 30A ', parallel to each other and defining a horizontal reference, and two lateral edges 30B, 30B' parallel to each other and defining a vertical reference.
  • the stiffeners comprise end stiffeners 16 disposed along respective end edges 30A, 30A ', 30B, 30B' of the form sheet 12, and intermediate stiffeners 17 disposed on the rear face 15 of the form sheet 12, between the end stiffeners 16.
  • the end stiffeners 16 thus comprise an upper horizontal stiffener 16A, a lower horizontal stiffener 16A ', a left lateral stiffener 16B, and a right lateral stiffener 16B'.
  • the guidelines are in relation to the position of the branch on the figure 2 , that is to say seen from the back of the board 2.
  • the four end stiffeners 16, the form sheet 12 and the rear closure plate 18 are arranged to form together a box 31 closed.
  • the intermediate stiffeners 17 are housed inside the box 31 delimiting inside the box 31 a plurality of closed compartments 32.
  • the shuttering body 4 furthermore has additional plates 33 closing the box 31 along certain contour elements of the rear plate 18.
  • the upper stiffener 16A is illustrated more precisely on the Figures 3 and 4 . It has a stepped profile shape over its entire length. It delimits an upper bearing surface 36 against which an upper handle is likely to be sealingly supported on the concrete.
  • the lower stiffener 16A ' is visible on the figure 3 , and more particularly on the figure 5 . It is a plate thicker than the upper stiffener 16A, because of its smaller width.
  • the lower stiffener 16A ' is raised to the rear to avoid reinforcing iron concrete that is waiting in the ground.
  • the side stiffeners 16B and 16B ' are generally plate-shaped. They are also provided with a plurality of recesses 38 for receiving the lateral assembly means 24 and various members.
  • the lateral stiffeners 16B, 16B ' have, in known manner, a greater width at the side assembly means 24, to structurally strengthen them.
  • the upper and lower stiffeners 16A, 16A ' are provided to receive the foot jacks 20 and the vertical assembly means 22.
  • the end stiffeners 16 and the intermediate stiffeners 17 are welded to the rear face 15 of the formwork sheet 12 along their front edge 40, for example discontinuously. These are for example solder lines of 3 cm every 25 cm.
  • the stiffeners 16, 17 have a slightly convex front edge 40 so that the formwork sheet 12 has a convex counter-arrow forward in the vertical direction, for example between 0.5 mm per meter and 2 mm per meter , preferably about 1 mm per meter, or about 2 mm over the entire height of panel 2 in the example shown.
  • the formwork sheet 12 is thus convex towards the front.
  • Intermediate stiffeners 17 include horizontal intermediate stiffeners 17A, and vertical intermediate stiffeners 17B.
  • the intermediate stiffeners 17 are flat, that is to say in the general shape of flat plate. They are also thin. Their thickness is for example less than or equal to 2mm.
  • the vertical intermediate stiffeners 17B are illustrated more precisely on the figure 6 . They are arranged parallel to each other and to the side edges 30B, 30B '. They are distributed substantially uniformly over the width of the panel 2.
  • the vertical stiffeners 17B extend, with the exception of the central stiffener 17B ', over the entire height of the panel 2.
  • the central stiffener 17B' is indeed shorter in the upper part of the panel 2 to allow the optional housing of a clamping rod receiving block.
  • the rear edge 42 of the vertical intermediate stiffeners 17B is convex, so that the stiffeners 17B have a greater rigidity in the middle part of the panel 2, where the stresses are the strongest.
  • the width of the stiffeners 17B is thus optimized as a function of the value of the stress provided at the level of the form sheet 12. These stress values vary in a vertical direction due to the pressure of the concrete.
  • the horizontal stiffeners 17A intersect and interpenetrate with the vertical stiffeners 17B by means of slots 44 ( Figures 6 and 7 ) respectively provided in the horizontal stiffeners 17A and in the vertical stiffeners 17B.
  • the stiffeners 17A, 17B overlap each other and are thus fixed one in the other.
  • This arrangement of the horizontal stiffeners 17A and 17B vertical stiffeners reinforces the stiffeners 17 and avoids the deformation of the stiffeners 17 in a direction normal to their general plane of extension.
  • the intermediate stiffeners 17 are, alternatively, oblique, that is to say arranged in a direction inclined relative to the horizontal and vertical.
  • the stiffeners 17 are arranged in parallel in at least two directions having an angle of at least 45 ° between them, preferably 90 °.
  • the intermediate stiffeners 17A, 17B have, along their rear edge 42, lugs 47 projecting rearwardly and intended to be soldered by plug welding to the rear plate 18 ( figures 6 bis and 6 ter).
  • each pin 47 is received in a corresponding through hole 47 'of the rear plate 18, with a clearance around the pin 47.
  • a welding material 47 is cast to fill the orifice 47' and thus ensure the connection between the stiffener 17 and the rear plate 18 by a weld called "plug".
  • the pins 47 penetrate partially into the orifices 47 ', for example about les of the thickness of the rear plate 18.
  • the horizontal and vertical stiffeners 17A, 17B are, at their crossroads, welded together to the formwork sheet 12 by angle welds 46 illustrated more precisely on the figure 8 .
  • the rear plate 18 has a general shape of thin plate. Its outline is substantially rectangular. Nevertheless, the rear plate 18 has a contour shaped to delimit a plurality of recesses 48 allowing access from the rear to the foot jacks 20 to the horizontal and lateral assembly means 24.
  • the plates 33 ( figure 2 ) are arranged in the contour of the recesses 48 to close the box 31 at the latter.
  • the rear panel 18 may of course have any recess or member necessary for the presence of an accessory, for example for the passage of blocks 26 for receiving the clamping rods.
  • the rear plate 18 is disposed against the rear edge 42 of each intermediate stiffener 17. It thus has a convex shape towards the rear ( figure 3 ) in line with the rear edge 42 of the intermediate stiffeners 17. It has, in vertical section, a rounded shape, and, in horizontal section, a rectilinear shape.
  • the rear plate 18 is welded to the inner side of the end stiffeners 16 (see FIG. Figures 3 to 5 ).
  • the rear plate 18 is welded to the intermediate stiffeners 17 by plugging their studs 47.
  • the formwork sheet 12 is a thin plate. It has for example a thickness less than or equal to 4 mm.
  • the rear plate 18 has for example a thickness less than that of the formwork sheet 12.
  • the formwork sheet 12 is ferromagnetic so as to allow fixing, on the front face 14, of mannequins for reservation openings of the concrete veil (doors, windows, ).
  • the formwork sheet 12, the stiffeners 16, 17 and the rear sheet 18 are for example made of steel, preferably a high-tensile steel.
  • the form sheet 12 is made of stainless steel, preferably a ferritic stainless steel with 17% chromium, or In Scheme TM steel.
  • the present invention also relates to a set of panels composed of several panels as described above.
  • the panels described above are in fact intended to be arranged facing each other in order to form a molding space of a wall, and to be assembled one above the other and next to each other another way to form very large volumes of formwork, for example of a height and width greater than 5 meters.
  • the boards according to the invention have many advantages, especially in terms of weight.
  • the recovery of forces by the rear plate 18 makes it possible to reduce the dimensions of the stiffeners arranged against the formwork sheet 12, in particular their thickness and their width.
  • the thickness of the formwork sheet 12 is also reduced. It follows that the total weight of the formwork body 4, and therefore of the form 2, is substantially reduced compared to existing dies.
  • the panel 2 thus has a total weight per m 2 of form surface less than or equal to 160 kg / m 2 , preferably less than or equal to 120 kg / m 2 , more preferably less than or equal to 100 kg / m 2 .
  • the formwork body 4 has for example a width of between 30 cm and 2.50 m and a height of between 1 m and 3.50 m.
  • the thickness of the panel 2 that is to say its dimension measured in a direction perpendicular to the form surface, is also less than or equal to 36 cm, for example approximately equal to 30 cm.
  • the formwork can be handled more easily, which reduces the time required to handle it on a construction site.
  • the rear plate 18 provides stiffeners 17 of particularly simple and inexpensive form, namely flat stiffeners.
  • These stiffeners 17 have, thanks to their flat shape, a very good resistance in bending around a ZZ axis ( figure 2 perpendicular to the plane along which the stiffener extends, even for a low material thickness.
  • the convex arrow against the forwards imposed on the formwork sheet 12 in a vertical direction provides better flexural strength of the board 2.
  • the against-arrow is indeed adapted so that the formwork sheet 12 and the stiffeners deform elastically until a substantially flat shape after pouring of the concrete, that is to say so that the counter-arrow is canceled substantially.
  • the configuration of the form 2 is, after casting concrete, optimal for good rigidity.
  • the closed box 31 obtained thanks to the rear plate 18 provides good thermal insulation of the formwork sheet 12 with the outside, which allows a faster setting of the concrete when the temperature of the outside air is cool.
  • the formwork body 4 further comprises an insulating material arranged inside the box 31, for example in each compartment 32, to further improve the thermal insulation of the formwork sheet 12.
  • This is for example a layer of polyurethane foam, for example sprayed with a gun.
  • the horizontal intermediate stiffeners 17A are for example first welded to the rear face 15 of the formwork sheet 12 along their front edge 40.
  • the vertical intermediate stiffeners 17B are then placed on the horizontal stiffeners 17A so as to interpenetrate each other at their respective slots 44, and then welded to the formwork sheet 12.
  • the corner welds 46 at the crossings of the stiffeners 17 are then made.
  • the manufacture then comprises a step of welding the end stiffeners 16 on the formwork sheet 12 along their front edge 40. This is for example first of the upper stiffener 16A, then the lower stiffener 16A ', followed by the two stiffeners 16B 'and 16B ".
  • the rear panel 18 is disposed against the rear edges 42 of the intermediate stiffeners 17 and against the inner sides of the end stiffeners 16.
  • the rear panel 18 is, advantageously, welded to the intermediate stiffeners 17 by plug welding around the pins 47.
  • the welding with the end stiffeners 16 is for example performed last.
  • the order of the welds of the rear plate 18 is reversed.
  • the platform 6 and the struts 10 are also foldable and removable.
  • the blocks 26 illustrated are fixed, but they can also be provided removable.

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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

The shutter (2) has a formwork sheet (12) with a front face defining a formwork surface (5). Flat intermediate stiffeners and end stiffeners are arranged against a rear face of the formwork sheet and welded to the formwork sheet. The end stiffeners are arranged along an end edge (30A) and another end edge of the formwork sheet. A rear sheet (18) is arranged against the stiffeners and welded to the stiffeners. The sheets and the stiffeners define a closed caisson (31). An insulating material is placed inside the caisson.

Description

La présente invention concerne une banche de coffrage d'un mur en béton, du type décrit dans le préambule de la revendication 1 .The present invention relates to a formwork shuttering of a concrete wall, of the type described in the preamble of claim 1.

Les banches sont des coffrages de grandes dimensions. Elles sont prévues pour s'assembler les unes au dessus des autres et les unes à côté des autres pour former de très grandes surfaces de coffrage de voiles en béton. Les banches sont en outre munies de plateformes permettant le travail pour les opérateurs coulant le béton.The boards are large formwork. They are designed to assemble one above the other and next to each other to form very large surfaces of formwork concrete sails. The banches are also provided with platforms allowing work for operators pouring concrete.

Pour obtenir une surface de béton lisse, il est connu d'utiliser des banches métalliques dont la surface de coffrage est réalisée par une tôle métallique, par exemple en acier.To obtain a smooth concrete surface, it is known to use metal sheets whose form surface is made by a metal sheet, for example steel.

La banche comprend ainsi une tôle coffrante et, pour éviter le flambement de la tôle coffrante et pour permettre l'adjonction de divers accessoires, une pluralité de raidisseurs longitudinaux soudés à la face arrière de la tôle coffrante. Les raidisseurs comprennent par exemple quatre raidisseurs d'extrémité soudés le long des bords d'extrémité de la tôle coffrante, et une pluralité de raidisseurs intermédiaires verticaux, par exemple de section circulaire, s'étendant de façon parallèle entre les raidisseurs d'extrémité latéraux. Des raidisseurs horizontaux peuvent également être prévus.The formwork thus comprises a formwork sheet and, to prevent buckling of the formwork sheet and to allow the addition of various accessories, a plurality of longitudinal stiffeners welded to the rear face of the formwork sheet. The stiffeners comprise, for example, four end stiffeners welded along the end edges of the form sheet, and a plurality of vertical intermediate stiffeners, for example of circular section, extending in parallel between the lateral end stiffeners. . Horizontal stiffeners may also be provided.

Néanmoins, ce type connu de banche a un poids élevé, ce qui rend la manipulation relativement difficile.Nevertheless, this known type of banche has a high weight, which makes handling relatively difficult.

Un but de l'invention est de fournir une banche de coffrage dont le poids est relativement faible.An object of the invention is to provide a shuttering formwork whose weight is relatively low.

A cet effet, l'invention a pour objet une banche du type précité, caractérisée par la partie caractérisante de la revendication 1.To this end, the invention relates to a banche of the aforementioned type, characterized by the characterizing part of claim 1.

Des modes particuliers de réalisation sont décrits dans les revendications 2 à 10.Particular embodiments are described in claims 2 to 10.

L'invention sera mieux comprise à la lecture de la description qui va suivre, donnée uniquement à titre d'exemple, et faite en se référant aux dessins annexés, sur lesquels :

  • la figure 1 est une vue schématique en perspective arrière d'une banche de coffrage d'un mur en béton, selon l'invention ;
  • la figure 2 est une vue arrière de la banche de la figure 1 sur laquelle les accessoires, notamment la plateforme de travail, et la tôle arrière de la banche ne sont pas représentés ;
  • la figure 3 est une vue schématique de côté illustrant l'agencement des raidisseurs d'extrémité et de la tôle arrière de fermeture de la banche des figures 1 et 2 ;
  • la figure 4 est une vue schématique agrandie en coupe verticale de la tôle coffrante, du raidisseur supérieur, d'un raidisseur intermédiaire vertical et de la tôle arrière de la banche des figures 1 à 3 ;
  • la figure 5 est une vue analogue à la figure 4 de la partie inférieure de la banche des figures 1 à 3 ;
  • la figure 6 est une vue latérale d'un raidisseur intermédiaire vertical de la banche des figures 1 à 5 ;
  • la figure 6 bis est une vue arrière illustrant une zone de soudure entre la tole arrière et le raidisseur intermédiaire vertical ;
  • la figure 6 ter est une vue en coupe suivant la ligne VI ter de la figure 6 bis de ladite zone de soudure ;
  • la figure 7 est une vue de dessus d'un détail d'un raidisseur intermédiaire horizontal de la banche des figures 1 à 6; et
  • la figure 8 est une vue arrière de détail illustrant l'entrecroisement des raidisseurs verticaux de la figure 6 avec les raidisseurs horizontaux de la figure 7, ainsi que les zones de soudure sur la tôle coffrante.
The invention will be better understood on reading the description which follows, given solely by way of example, and with reference to the appended drawings, in which:
  • the figure 1 is a schematic rear perspective view of a formwork wall of a concrete wall, according to the invention;
  • the figure 2 is a back view of the banche of the figure 1 on which the accessories, in particular the work platform, and the rear plate of the banche are not represented;
  • the figure 3 is a schematic side view illustrating the arrangement of the end stiffeners and the rear panel closure plate of the figures 1 and 2 ;
  • the figure 4 is an enlarged schematic view in vertical section of the formwork sheet, the upper stiffener, a vertical intermediate stiffener and the back sheet of the banche des Figures 1 to 3 ;
  • the figure 5 is a view similar to the figure 4 of the lower part of the box of Figures 1 to 3 ;
  • the figure 6 is a side view of a vertical intermediate stiffener of the box of Figures 1 to 5 ;
  • the figure 6 bis is a rear view illustrating a weld zone between the rear panel and the vertical intermediate stiffener;
  • the figure 6 ter is a sectional view along the line VI ter of the figure 6 bis of said weld zone;
  • the figure 7 is a top view of a detail of a horizontal intermediate stiffener of the box of Figures 1 to 6 ; and
  • the figure 8 is a detailed rear view illustrating the intertwining of the vertical stiffeners of the figure 6 with the horizontal stiffeners of the figure 7 , as well as the welding zones on the formwork sheet.

La figure 1 illustre une banche 2 de coffrage d'un mur en béton, plus particulièrement d'un voile en béton.The figure 1 illustrates a formwork panel 2 of a concrete wall, more particularly a concrete veil.

La banche 2 comporte un corps 4 de coffrage définissant une surface de coffrage 5. Une plateforme 6 de travail en encorbellement est montée à l'arrière du corps de coffrage 4, à son extrémité supérieure, et munie d'une échelle 8. La plateforme 6 assure l'accès des opérateurs en haut de la banche 2, pour couler le béton. Deux bracons 10 d'appui au sol sont articulés à l'arrière du corps de coffrage 4 pour assurer sa stabilité au sol.The formwork 2 comprises a formwork body 4 defining a formwork surface 5. A corbel work platform 6 is mounted at the rear of the formwork body 4, at its upper end, and provided with a ladder 8. The platform 6 ensures the access of the operators at the top of the block 2, to pour the concrete. Two ground support struts 10 are hinged to the rear of the formwork body 4 to ensure its stability on the ground.

Le corps de coffrage 4 selon l'invention comprend plus particulièrement, comme illustré sur les figures 1 à 3, une tôle coffrante 12 présentant une face avant 14 (figures 3 à 5) définissant la surface de coffrage 5, une pluralité de raidisseurs 16, 17 disposés contre la face arrière 15 opposée de la tôle coffrante 12, et une tôle arrière 18 de fermeture disposée contre les raidisseurs 16, 17. La tôle arrière 18 ferme le corps de coffrage 4 pour lui conférer une forme générale de caisson.The formwork body 4 according to the invention more particularly comprises, as illustrated in FIGS. Figures 1 to 3 , a formwork sheet 12 having a front face 14 ( Figures 3 to 5 defining the form surface 5, a plurality of stiffeners 16, 17 arranged against the opposite rear face 15 of the formwork sheet 12, and a rear closure plate 18 disposed against the stiffeners 16, 17. The rear panel 18 closes the formwork body 4 to give it a general box shape .

Le corps de coffrage 4 est en outre muni, de façon classique et comme illustré sur les figures 1 et 2, de vérins de pieds 20 de rehaussement de la banche 2, de moyens d'assemblage vertical 22 avec une banche inférieure et avec une banche supérieure, de moyens d'assemblage latéral 24 de chaque côté de la banche 2, avec une banche latérale, et de quatre blocs 26 de réception de tiges de serrage pour serrer les banches 2 disposées en regard l'une vers l'autre.The shuttering body 4 is further provided, in a conventional manner and as illustrated on the figures 1 and 2 , feet jacks 20 for raising the panel 2, vertical assembly means 22 with a lower panel and with an upper panel, lateral assembly means 24 on each side of the panel 2, with a side panel, and four blocks 26 for receiving clamping rods for clamping the panels 2 arranged facing each other.

La tôle coffrante 12 a une forme générale de plaque plane et de contour rectangulaire. Elle présente ainsi deux bords supérieur 30A et inférieur 30A', parallèles entre eux et définissant une référence d'horizontalité, et deux bords latéraux 30B, 30B' parallèles entre eux et définissant une référence de verticalité.The formwork sheet 12 has a general shape of flat plate and rectangular outline. It thus has two upper edges 30A and lower 30A ', parallel to each other and defining a horizontal reference, and two lateral edges 30B, 30B' parallel to each other and defining a vertical reference.

Les raidisseurs comprennent des raidisseurs 16 d'extrémité disposés le long des bords d'extrémité 30A, 30A', 30B, 30B' respectifs de la tôle coffrante 12, et des raidisseurs intermédiaires 17 disposés sur la face arrière 15 de la tôle coffrante 12, entre les raidisseurs d'extrémité 16.The stiffeners comprise end stiffeners 16 disposed along respective end edges 30A, 30A ', 30B, 30B' of the form sheet 12, and intermediate stiffeners 17 disposed on the rear face 15 of the form sheet 12, between the end stiffeners 16.

Les raidisseurs d'extrémité 16 comprennent ainsi un raidisseur horizontal supérieur 16A, un raidisseur horizontal inférieur 16A', un raidisseur latéral gauche 16B, et un raidisseur latéral droit 16B'. Les orientations s'entendent par rapport à la position de la banche sur la figure 2, c'est-à-dire vu de l'arrière de la banche 2.The end stiffeners 16 thus comprise an upper horizontal stiffener 16A, a lower horizontal stiffener 16A ', a left lateral stiffener 16B, and a right lateral stiffener 16B'. The guidelines are in relation to the position of the branch on the figure 2 , that is to say seen from the back of the board 2.

Les quatre raidisseurs d'extrémité 16, la tôle coffrante 12 et la tôle arrière de fermeture 18 sont agencés pour former ensemble un caisson 31 fermé.The four end stiffeners 16, the form sheet 12 and the rear closure plate 18 are arranged to form together a box 31 closed.

Les raidisseurs intermédiaires 17 sont logés à l'intérieur du caisson 31 en délimitant à l'intérieur du caisson 31 une pluralité de compartiments 32 fermés.The intermediate stiffeners 17 are housed inside the box 31 delimiting inside the box 31 a plurality of closed compartments 32.

Le corps de coffrage 4 présente en outre des tôles supplémentaires 33 fermant le caisson 31 le long certains éléments de contour de la tôle arrière 18.The shuttering body 4 furthermore has additional plates 33 closing the box 31 along certain contour elements of the rear plate 18.

Le raidisseur supérieur 16A est illustré plus précisément sur les figures 3 et 4. Il a une forme de profilé en gradin sur l'ensemble de sa longueur. Il délimite une surface supérieure 36 d'appui contre laquelle une banche supérieure est susceptible de s'appuyer de façon étanche au béton.The upper stiffener 16A is illustrated more precisely on the Figures 3 and 4 . It has a stepped profile shape over its entire length. It delimits an upper bearing surface 36 against which an upper handle is likely to be sealingly supported on the concrete.

Le raidisseur inférieur 16A' est visible sur la figure 3, et plus particulièrement sur la figure 5. Il s'agit d'une plaque plus épaisse que le raidisseur supérieur 16A, en raison de sa moindre largeur. Le raidisseur inférieur 16A' est relevé vers l'arrière pour éviter les fers de renfort du béton qui sont en attente dans le sol.The lower stiffener 16A 'is visible on the figure 3 , and more particularly on the figure 5 . It is a plate thicker than the upper stiffener 16A, because of its smaller width. The lower stiffener 16A 'is raised to the rear to avoid reinforcing iron concrete that is waiting in the ground.

Les raidisseurs latéraux 16B et 16B' sont en forme générale de plaque. Ils sont en outre munis d'une pluralité d'évidements 38 de réception des moyens d'assemblage latéral 24 et de divers organes. Les raidisseurs latéraux 16B, 16B' ont, de manière connue, une largeur plus importante au niveau des moyens d'assemblage latéral 24, pour les renforcer structurellement.The side stiffeners 16B and 16B 'are generally plate-shaped. They are also provided with a plurality of recesses 38 for receiving the lateral assembly means 24 and various members. The lateral stiffeners 16B, 16B 'have, in known manner, a greater width at the side assembly means 24, to structurally strengthen them.

De manière analogue, les raidisseurs supérieur et inférieur 16A, 16A' sont prévus pour recevoir les vérins de pied 20 et les moyens d'assemblage vertical 22.Similarly, the upper and lower stiffeners 16A, 16A 'are provided to receive the foot jacks 20 and the vertical assembly means 22.

Les raidisseurs d'extrémité 16 et les raidisseurs intermédiaires 17 sont soudés sur la face arrière 15 de la tôle coffrante 12 suivant leur bord avant 40, par exemple de façon discontinue. Il s'agit par exemple de lignes de soudure de 3 cm tous les 25 cm.The end stiffeners 16 and the intermediate stiffeners 17 are welded to the rear face 15 of the formwork sheet 12 along their front edge 40, for example discontinuously. These are for example solder lines of 3 cm every 25 cm.

Les raidisseurs 16, 17 ont un bord avant 40 légèrement convexe de telle sorte que la tôle coffrante 12 présente une contre-flèche bombée vers l'avant suivant la direction verticale, par exemple comprise entre 0,5 mm par mètre et 2 mm par mètre, de préférence d'environ 1 mm par mètre, soit environ 2 mm sur l'ensemble de la hauteur de la banche 2 dans l'exemple illustré. La tôle coffrante 12 est ainsi convexe vers l'avant.The stiffeners 16, 17 have a slightly convex front edge 40 so that the formwork sheet 12 has a convex counter-arrow forward in the vertical direction, for example between 0.5 mm per meter and 2 mm per meter , preferably about 1 mm per meter, or about 2 mm over the entire height of panel 2 in the example shown. The formwork sheet 12 is thus convex towards the front.

Les raidisseurs intermédiaires 17 comprennent des raidisseurs intermédiaires horizontaux 17A, et des raidisseurs intermédiaires verticaux 17B.Intermediate stiffeners 17 include horizontal intermediate stiffeners 17A, and vertical intermediate stiffeners 17B.

Les raidisseurs intermédiaires 17 sont plats, c'est-à-dire en forme générale de plaque plane. Ils sont en outre minces. Leur épaisseur est par exemple inférieure ou égale à 2mm.The intermediate stiffeners 17 are flat, that is to say in the general shape of flat plate. They are also thin. Their thickness is for example less than or equal to 2mm.

Les raidisseurs intermédiaires verticaux 17B sont illustrés plus précisément sur la figure 6. Ils sont disposés de façon parallèle entre eux et aux bords latéraux 30B, 30B'. Ils sont répartis de manière sensiblement uniforme sur la largeur de la banche 2.The vertical intermediate stiffeners 17B are illustrated more precisely on the figure 6 . They are arranged parallel to each other and to the side edges 30B, 30B '. They are distributed substantially uniformly over the width of the panel 2.

Les raidisseurs verticaux 17B s'étendent, à l'exception du raidisseur central 17B', sur l'ensemble de la hauteur de la banche 2. Le raidisseur central 17B' est en effet plus court dans la partie supérieure de la banche 2 pour permettre le logement optionnel d'un bloc de réception de tige de serrage.The vertical stiffeners 17B extend, with the exception of the central stiffener 17B ', over the entire height of the panel 2. The central stiffener 17B' is indeed shorter in the upper part of the panel 2 to allow the optional housing of a clamping rod receiving block.

Le bord arrière 42 des raidisseurs intermédiaires verticaux 17B est convexe, de façon à ce que les raidisseurs 17B présentent une rigidité plus importante dans la partie médiane de la banche 2, où les contraintes sont les plus fortes. La largeur des raidisseurs 17B est ainsi optimisée en fonction de la valeur de la contrainte prévue au niveau de la tôle coffrante 12. Ces valeurs de contrainte varient suivant une direction verticale du fait de la pression du béton.The rear edge 42 of the vertical intermediate stiffeners 17B is convex, so that the stiffeners 17B have a greater rigidity in the middle part of the panel 2, where the stresses are the strongest. The width of the stiffeners 17B is thus optimized as a function of the value of the stress provided at the level of the form sheet 12. These stress values vary in a vertical direction due to the pressure of the concrete.

Les raidisseurs horizontaux 17A s'entrecroisent et s'interpénètrent avec les raidisseurs verticaux 17B au moyen de fentes 44 (figures 6 et 7) prévues respectivement dans les raidisseurs horizontaux 17A et dans les raidisseurs verticaux 17B. Les raidisseurs 17A, 17B se chevauchent l'un l'autre et sont ainsi fixés l'un dans l'autre.The horizontal stiffeners 17A intersect and interpenetrate with the vertical stiffeners 17B by means of slots 44 ( Figures 6 and 7 ) respectively provided in the horizontal stiffeners 17A and in the vertical stiffeners 17B. The stiffeners 17A, 17B overlap each other and are thus fixed one in the other.

Cette disposition des raidisseurs horizontaux 17A et verticaux 17B l'un dans l'autre renforce les raidisseurs 17 et évite la déformation des raidisseurs 17 suivant une direction normale à leur plan général d'extension.This arrangement of the horizontal stiffeners 17A and 17B vertical stiffeners reinforces the stiffeners 17 and avoids the deformation of the stiffeners 17 in a direction normal to their general plane of extension.

Il est à noter que les raidisseurs intermédiaires 17 sont, en variante, obliques, c'est-à-dire disposés suivant une direction inclinée par rapport à l'horizontale et à la verticale. D'une manière générale, les raidisseurs 17 sont disposés de façon parallèle suivant au moins deux directions présentant entre elles un angle d'au moins 45°, de préférence de 90°.It should be noted that the intermediate stiffeners 17 are, alternatively, oblique, that is to say arranged in a direction inclined relative to the horizontal and vertical. In general, the stiffeners 17 are arranged in parallel in at least two directions having an angle of at least 45 ° between them, preferably 90 °.

Les raidisseurs intermédiaires 17A, 17B présentent, le long de leur bord arrière 42, des tenons 47 faisant saillie vers l'arrière et prévus pour être soudés par soudure bouchon à la tôle arrière 18 (figures 6 bis et 6 ter).The intermediate stiffeners 17A, 17B have, along their rear edge 42, lugs 47 projecting rearwardly and intended to be soldered by plug welding to the rear plate 18 ( figures 6 bis and 6 ter).

A cet effet, chaque tenon 47 est reçu dans un orifice traversant 47' correspondant de la tôle arrière 18, avec un jeu autour du tenon 47. Un matériau de soudure 47" est coulé pour combler l'orifice 47' et ainsi assurer la liaison entre le raidisseur 17 et la tôle arrière 18 par une soudure dite « bouchon ».For this purpose, each pin 47 is received in a corresponding through hole 47 'of the rear plate 18, with a clearance around the pin 47. A welding material 47 "is cast to fill the orifice 47' and thus ensure the connection between the stiffener 17 and the rear plate 18 by a weld called "plug".

Les tenons 47 pénètrent partiellement dans les orifices 47', par exemple sur environ les ¾ de l'épaisseur de la tôle arrière 18.The pins 47 penetrate partially into the orifices 47 ', for example about les of the thickness of the rear plate 18.

Les raidisseurs horizontaux et verticaux 17A, 17B sont, au niveau de leurs croisements, soudés ensemble à la tôle coffrante 12 par des soudures d'angle 46 illustrées plus précisément sur la figure 8.The horizontal and vertical stiffeners 17A, 17B are, at their crossroads, welded together to the formwork sheet 12 by angle welds 46 illustrated more precisely on the figure 8 .

La tôle arrière 18 a une forme générale de plaque mince. Son contour est sensiblement rectangulaire. Néanmoins, la tôle arrière 18 a un contour conformé pour délimiter une pluralité d'évidements 48 permettant l'accès par l'arrière aux vérins de pieds 20, aux moyens d'assemblage horizontal 22 et latéral 24. Les tôles 33 (figure 2) sont disposées suivant le contour des évidements 48 pour fermer le caisson 31 au niveau de ces derniers.The rear plate 18 has a general shape of thin plate. Its outline is substantially rectangular. Nevertheless, the rear plate 18 has a contour shaped to delimit a plurality of recesses 48 allowing access from the rear to the foot jacks 20 to the horizontal and lateral assembly means 24. The plates 33 ( figure 2 ) are arranged in the contour of the recesses 48 to close the box 31 at the latter.

La tôle arrière 18 peut bien entendu présenter tout évidement ou organe nécessaire à la présence d'un accessoire, par exemple pour le passage des blocs 26 de réception des tiges de serrage.The rear panel 18 may of course have any recess or member necessary for the presence of an accessory, for example for the passage of blocks 26 for receiving the clamping rods.

La tôle arrière 18 est disposée contre le bord arrière 42 de chaque raidisseur intermédiaire 17. Elle a ainsi une forme convexe vers l'arrière (figure 3) épousant le bord arrière 42 des raidisseurs intermédiaires 17. Elle a, en section verticale, une forme arrondie, et, en section horizontale, une forme rectiligne.The rear plate 18 is disposed against the rear edge 42 of each intermediate stiffener 17. It thus has a convex shape towards the rear ( figure 3 ) in line with the rear edge 42 of the intermediate stiffeners 17. It has, in vertical section, a rounded shape, and, in horizontal section, a rectilinear shape.

La tôle arrière 18 est soudée sur le flanc intérieur des raidisseurs d'extrémité 16 (voir figures 3 à 5).The rear plate 18 is welded to the inner side of the end stiffeners 16 (see FIG. Figures 3 to 5 ).

La tôle arrière 18 est soudée aux raidisseurs intermédiaires 17 par soudure bouchon de leurs tenons 47.The rear plate 18 is welded to the intermediate stiffeners 17 by plugging their studs 47.

La tôle coffrante 12 est une plaque mince. Elle a par exemple une épaisseur inférieure ou égale à 4 mm. La tôle arrière 18 a par exemple une épaisseur inférieure à celle de la tôle coffrante 12.The formwork sheet 12 is a thin plate. It has for example a thickness less than or equal to 4 mm. The rear plate 18 has for example a thickness less than that of the formwork sheet 12.

La tôle coffrante 12 est ferromagnétique de façon à permettre la fixation, sur la face avant 14, de mannequins de réservation des ouvertures du voile de béton (portes, fenêtres,...).The formwork sheet 12 is ferromagnetic so as to allow fixing, on the front face 14, of mannequins for reservation openings of the concrete veil (doors, windows, ...).

La tôle coffrante 12, les raidisseurs 16, 17 et la tôle arrière 18 sont par exemple réalisés en acier, de préférence un acier à haute limite élastique. En variante, la tôle coffrante 12 est réalisée en acier inoxydable, de préférence un acier inoxydable ferritique à 17% de chrome, ou en acier Indaten™.The formwork sheet 12, the stiffeners 16, 17 and the rear sheet 18 are for example made of steel, preferably a high-tensile steel. Alternatively, the form sheet 12 is made of stainless steel, preferably a ferritic stainless steel with 17% chromium, or Indaten ™ steel.

La présente invention a également pour objet un ensemble de banches composé de plusieurs banches telles que décrites ci-dessus. Les banches décrites ci-dessus sont en effet destinées à être disposées en regard les unes en face des autres de façon à former un espace de moulage d'un mur, et à être assemblées les unes au-dessus des autres et les unes à côté des autres de façon à former de très grands volumes de coffrage, par exemple d'une hauteur et d'une largeur supérieures à 5 mètres.The present invention also relates to a set of panels composed of several panels as described above. The panels described above are in fact intended to be arranged facing each other in order to form a molding space of a wall, and to be assembled one above the other and next to each other another way to form very large volumes of formwork, for example of a height and width greater than 5 meters.

Les coffrages ainsi obtenus permettent de mouler en un temps très court les murs, avec une main-d'oeuvre réduite.The forms thus obtained make it possible to mold the walls in a very short time, with a reduced labor force.

Les banches selon l'invention présentent de nombreux avantages, notamment en terme de poids.The boards according to the invention have many advantages, especially in terms of weight.

La reprise des efforts par la tôle arrière 18 permet en effet de réduire les dimensions des raidisseurs disposés contre la tôle coffrante 12, notamment leur épaisseur et leur largeur. L'épaisseur de la tôle coffrante 12 est également réduite. Il s'ensuit que le poids total du corps de coffrage 4, et donc de la banche 2, est sensiblement réduit par rapport aux banches existantes. La banche 2 a ainsi un poids total par m2 de surface de coffrage inférieur ou égal à 160 kg/m2, de préférence inférieur ou égale à 120 kg/m2, de préférence encore inférieur ou égal à 100 kg/m2.The recovery of forces by the rear plate 18 makes it possible to reduce the dimensions of the stiffeners arranged against the formwork sheet 12, in particular their thickness and their width. The thickness of the formwork sheet 12 is also reduced. It follows that the total weight of the formwork body 4, and therefore of the form 2, is substantially reduced compared to existing dies. The panel 2 thus has a total weight per m 2 of form surface less than or equal to 160 kg / m 2 , preferably less than or equal to 120 kg / m 2 , more preferably less than or equal to 100 kg / m 2 .

Le corps de coffrage 4 a par exemple une largeur comprise entre 30 cm et 2,50 m et une hauteur comprise entre 1 m et 3,50 m.The formwork body 4 has for example a width of between 30 cm and 2.50 m and a height of between 1 m and 3.50 m.

L'épaisseur de la banche 2, c'est-à-dire sa dimension mesurée selon une direction perpendiculaire à la surface de coffrage, est en outre inférieure ou égale à 36 cm, par exemple environ égale à 30 cm.The thickness of the panel 2, that is to say its dimension measured in a direction perpendicular to the form surface, is also less than or equal to 36 cm, for example approximately equal to 30 cm.

Grâce à son poids réduit, la banche peut être manipulée plus facilement, ce qui réduit le temps nécessaire à sa manipulation sur un chantier.Thanks to its reduced weight, the formwork can be handled more easily, which reduces the time required to handle it on a construction site.

Grâce à son épaisseur réduite, la banche est transportée dans un espace plus restreint, ou en nombre plus important.Due to its reduced thickness, the form is transported in a smaller space, or in larger numbers.

Le coût des matières premières nécessaires à la fabrication de la banche est également réduit.The cost of the raw materials necessary for the manufacture of the banche is also reduced.

En outre, la tôle arrière 18 permet de prévoir des raidisseurs 17 de forme particulièrement simple et peu coûteuse, à savoir des raidisseurs plats. Ces raidisseurs 17 présentent grâce à leur forme plate, une très bonne résistance en flexion autour d'un axe Z-Z (figure 2) perpendiculaire au plan suivant lequel le raidisseur s'étend, même pour une épaisseur de matériau faible.In addition, the rear plate 18 provides stiffeners 17 of particularly simple and inexpensive form, namely flat stiffeners. These stiffeners 17 have, thanks to their flat shape, a very good resistance in bending around a ZZ axis ( figure 2 perpendicular to the plane along which the stiffener extends, even for a low material thickness.

La perte de résistance en flexion autour d'un axe transversal Y-Y (figure 6), par rapport à un raidisseur de section circulaire, est compensée par l'entrecroisement des raidisseurs 17. L'entrecroisement des raidisseurs 17 leur assure en effet une rigidité suffisante pour éviter leur flambement.The loss of bending strength around a transverse axis YY ( figure 6 ), with respect to a circular section stiffener, is compensated by the interlacing of the stiffeners 17. The interlacing of the stiffeners 17 ensures them in fact a sufficient rigidity to prevent their buckling.

La contre-flèche bombée vers l'avant imposée à la tôle coffrante 12 suivant une direction verticale assure une meilleure résistance en flexion de la banche 2. La contre-flèche est en effet adaptée pour que la tôle coffrante 12 et les raidisseurs se déforment élastiquement jusqu'à une forme sensiblement plane après coulée du béton, c'est-à-dire pour que la contre-flèche s'annule sensiblement. Il en résulte que la configuration de la banche 2 est, après coulée du béton, optimale pour une bonne rigidité.The convex arrow against the forwards imposed on the formwork sheet 12 in a vertical direction provides better flexural strength of the board 2. The against-arrow is indeed adapted so that the formwork sheet 12 and the stiffeners deform elastically until a substantially flat shape after pouring of the concrete, that is to say so that the counter-arrow is canceled substantially. As a result, the configuration of the form 2 is, after casting concrete, optimal for good rigidity.

Le caisson fermé 31 obtenu grâce à la tôle arrière 18 assure une bonne isolation thermique de la tôle coffrante 12 avec l'extérieur, ce qui permet une prise plus rapide du béton lorsque la température de l'air extérieur est fraîche.The closed box 31 obtained thanks to the rear plate 18 provides good thermal insulation of the formwork sheet 12 with the outside, which allows a faster setting of the concrete when the temperature of the outside air is cool.

En variante, le corps de coffrage 4 comprend en outre un matériau isolant agencé à l'intérieur du caisson 31, par exemple dans chaque compartiment 32, pour améliorer encore l'isolation thermique de la tôle coffrante 12. Il s'agit par exemple d'une couche de mousse de polyuréthane, par exemple pulvérisée à l'aide d'un pistolet.Alternatively, the formwork body 4 further comprises an insulating material arranged inside the box 31, for example in each compartment 32, to further improve the thermal insulation of the formwork sheet 12. This is for example a layer of polyurethane foam, for example sprayed with a gun.

La fixation de la tôle arrière de fermeture 18 sur les raidisseurs 16, 17 par soudure bouchon facilite la fabrication. Ce type de soudure s'est en effet révélé, de manière surprenante, suffisant pour assurer une bonne reprise des efforts entre les raidisseurs intermédiaires 17 et la tôle arrière 18.Attaching the rear closure plate 18 to the stiffeners 16, 17 by plug welding facilitates manufacture. This type of weld has, in fact, surprisingly proved sufficient to ensure good recovery of the forces between the intermediate stiffeners 17 and the rear plate 18.

Un procédé optimal de fabrication de la banche selon l'invention va maintenant être décrit.An optimal method of manufacturing the box according to the invention will now be described.

Les raidisseurs intermédiaires horizontaux 17A sont par exemple d'abord soudés sur la face arrière 15 de la tôle coffrante 12 suivant leur bord avant 40.The horizontal intermediate stiffeners 17A are for example first welded to the rear face 15 of the formwork sheet 12 along their front edge 40.

Les raidisseurs intermédiaires verticaux 17B sont ensuite disposés sur les raidisseurs horizontaux 17A de façon à s'interpénétrer l'un l'autre au niveau de leurs fentes 44 respectives, puis soudés à la tôle coffrante 12. Les soudures d'angle 46 au niveau des croisements des raidisseurs 17 sont alors réalisées.The vertical intermediate stiffeners 17B are then placed on the horizontal stiffeners 17A so as to interpenetrate each other at their respective slots 44, and then welded to the formwork sheet 12. The corner welds 46 at the crossings of the stiffeners 17 are then made.

La fabrication comprend ensuite une étape de soudure des raidisseurs d'extrémité 16 sur la tôle coffrante 12 suivant leur bord avant 40. Il s'agit par exemple en premier lieu du raidisseur supérieur 16A, puis du raidisseur inférieur 16A', suivis des deux raidisseurs latéraux 16B' et 16B".The manufacture then comprises a step of welding the end stiffeners 16 on the formwork sheet 12 along their front edge 40. This is for example first of the upper stiffener 16A, then the lower stiffener 16A ', followed by the two stiffeners 16B 'and 16B ".

Une fois l'ensemble des raidisseurs 16, 17 soudés sur la tôle coffrante 12, la tôle arrière 18 est disposée contre les bords arrière 42 des raidisseurs intermédiaires 17 et contre les flancs intérieurs des raidisseurs d'extrémité 16. La tôle arrière 18 est, de manière avantageuse, soudée au raidisseurs intermédiaires 17 par soudure bouchon autour des tenons 47. La soudure avec les raidisseurs d'extrémité 16 est par exemple réalisée en dernier. En variante, l'ordre des soudures de la tôle arrière 18 est inversé.Once all the stiffeners 16, 17 welded to the form sheet 12, the rear panel 18 is disposed against the rear edges 42 of the intermediate stiffeners 17 and against the inner sides of the end stiffeners 16. The rear panel 18 is, advantageously, welded to the intermediate stiffeners 17 by plug welding around the pins 47. The welding with the end stiffeners 16 is for example performed last. Alternatively, the order of the welds of the rear plate 18 is reversed.

Les divers accessoires sont ensuite intégrés au corps de coffrage 4, puis la plateforme 6 et les bracons 10.The various accessories are then integrated into the formwork body 4, then the platform 6 and the braces 10.

La plateforme 6 et les bracons 10 sont d'ailleurs pliables et amovibles.The platform 6 and the struts 10 are also foldable and removable.

Les blocs 26 illustrés sont fixes, mais ils peuvent également être prévus démontables.The blocks 26 illustrated are fixed, but they can also be provided removable.

Claims (10)

Banche (2) de coffrage d'un mur en béton, du type comprenant : - une tôle coffrante (12) présentant une face avant (14) et une face arrière (15) opposées, la face avant (14) définissant une surface de coffrage (5) ; et - une pluralité de raidisseurs verticaux plats (16, 17) disposés contre la face arrière (15) de la tôle coffrante (12) suivant leur bord avant, les raidisseurs (16, 17) étant soudés à la tôle coffrante (12), la banche (2) comportant en outre une tôle arrière (18) disposée contre le bord arrière des raidisseurs (16, 17) et soudée à ceux-ci, caractérisé en ce que le bord arrière (42) des raidisseurs est convexe, de façon à ce que les raidisseurs (17B) présentent une rigidité plus importante dans la partie médiane de la banche (2). Shaft (2) for formwork of a concrete wall, of the type comprising: - a formwork sheet (12) having a front face (14) and a rear face (15) opposite, the front face (14) defining a form surface (5); and a plurality of flat vertical stiffeners (16, 17) disposed against the rear face (15) of the form sheet (12) along their front edge, the stiffeners (16, 17) being welded to the form sheet (12), the sleeve (2) further comprising a rear plate (18) disposed against the rear edge of the stiffeners (16, 17) and welded thereto, characterized in that the rear edge (42) of the stiffeners is convex, so as to the stiffeners (17B) have a greater rigidity in the middle part of the panel (2). Banche (2) selon la revendication 1, comprenant en outre des raidisseurs d'extrémité (16) disposés le long des bords d'extrémité (30A, 30B) de la tôle coffrante (12).The blade (2) of claim 1, further comprising end stiffeners (16) disposed along the end edges (30A, 30B) of the form sheet (12). Banche (2) selon la revendication 2, dans laquelle la tôle coffrante (12), la tôle arrière (18) et les raidisseurs (16, 17) délimitent ensemble au moins un caisson (31).Banche (2) according to claim 2, wherein the formwork sheet (12), the rear plate (18) and the stiffeners (16, 17) together define at least one box (31). Banche (2) selon la revendication 3, dans laquelle le caisson (31) est fermé.Banche (2) according to claim 3, wherein the box (31) is closed. Banche (2) selon la revendication 3 ou 4, dans laquelle la banche (2) comprend, à l'intérieur du caisson (31), un matériau isolant.Banche (2) according to claim 3 or 4, wherein the formwork (2) comprises, inside the box (31), an insulating material. Banche (2) selon la revendication 2, dans laquelle les raidisseurs comprennent des raidisseurs intermédiaires (17) disposés entre les raidisseurs d'extrémité (16) opposés.The handle (2) according to claim 2, wherein the stiffeners comprise intermediate stiffeners (17) disposed between the opposite end stiffeners (16). Banche (2) selon la revendication 6, dans laquelle les raidisseurs intermédiaires (17) comprennent des premiers raidisseurs plats (17A) s'étendant suivant une première direction verticale et des deuxièmes raidisseurs plats (17B) s'étendant suivant une deuxième direction inclinée par rapport à la première direction d'un angle d'au moins 45°, les premiers raidisseurs (17A) et les deuxièmes raidisseurs (17B) s'entrecroisant.The board (2) according to claim 6, wherein the intermediate stiffeners (17) comprise first flat stiffeners (17A) extending in a first vertical direction and second flat stiffeners (17B) extending in a second direction inclined by relative to the first direction at an angle of at least 45 °, the first stiffeners (17A) and the second stiffeners (17B) intersecting each other. Banche (2) selon la revendication 7, dans laquelle les premiers raidisseurs (17A) et les deuxièmes raidisseurs (17B) s'interpénètrent par l'intermédiaire de fentes (44) des premiers raidisseurs (17A) et des deuxièmes raidisseurs (17B).Banche (2) according to claim 7, wherein the first stiffeners (17A) and the second stiffeners (17B) interpenetrate by intermediate slits (44) of the first stiffeners (17A) and second stiffeners (17B). Banche (2) selon l'une quelconque des revendications précédentes, dans laquelle les raidisseurs (16, 17) sont conformés de telle sorte que la tôle coffrante (12) présente une contre-flèche bombée vers l'avant, la contre-flèche étant de préférence comprise entre 0,5 mm par mètre et 2 mm par mètre, de préférence environ égale à 1 mm par mètre.Banche (2) according to any one of the preceding claims, wherein the stiffeners (16, 17) are shaped so that the form sheet (12) has a convex against-arrow forward, the against-arrow being preferably between 0.5 mm per meter and 2 mm per meter, preferably approximately equal to 1 mm per meter. Banche (2) selon l'une quelconque des revendications précédentes, dans laquelle la banche (2) présente un poids total par mètre carré de surface de coffrage (5) inférieur ou égal à 160 kg/m2 de surface de coffrage, de préférence inférieur ou égal à 120 kg/m2 de surface de coffrage, de préférence encore inférieur ou égal à 100 kg/m2 de surface de coffrage.Shaft (2) according to any one of the preceding claims, wherein the panel (2) has a total weight per square meter of form surface (5) less than or equal to 160 kg / m 2 of form surface, preferably less than or equal to 120 kg / m 2 of form surface, more preferably less than or equal to 100 kg / m 2 of form surface.
EP10151226A 2009-01-21 2010-01-20 Form panel for formworking a concrete wall Active EP2211000B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP11179390A EP2400080A1 (en) 2009-01-21 2010-01-20 Form panel for formworking a concrete wall

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR0950366A FR2941254B1 (en) 2009-01-21 2009-01-21 FORMWORK BANK OF A CONCRETE WALL.

Related Child Applications (1)

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EP11179390.7 Division-Into 2011-08-30

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EP2211000A1 true EP2211000A1 (en) 2010-07-28
EP2211000B1 EP2211000B1 (en) 2012-02-08

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EP10151226A Active EP2211000B1 (en) 2009-01-21 2010-01-20 Form panel for formworking a concrete wall
EP11179390A Withdrawn EP2400080A1 (en) 2009-01-21 2010-01-20 Form panel for formworking a concrete wall

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EP11179390A Withdrawn EP2400080A1 (en) 2009-01-21 2010-01-20 Form panel for formworking a concrete wall

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EP (2) EP2211000B1 (en)
AT (1) ATE544923T1 (en)
FR (2) FR2941254B1 (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR3016382A1 (en) * 2014-01-14 2015-07-17 Outinord St Amand FORMWORK BANK.
FR3016381A1 (en) * 2014-01-14 2015-07-17 Outinord St Amand SIDE ARMS FOR FORMWORK.
FR3080396A1 (en) * 2018-04-20 2019-10-25 Outinord St Amand FORMING DEVICE HAVING A PLASTIC REAR WALL
EP4303379A1 (en) * 2022-07-08 2024-01-10 Roger De Kalbermatten Composite formwork panel, comprising a non-metallic core and a magnetic metal sheet
FR3137699A1 (en) * 2022-07-08 2024-01-12 Roger de KALBERMATTEN Composite formwork panel, comprising a non-metallic core and a magnetic metal sheet

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR3114335B1 (en) 2020-09-22 2022-11-11 Anoxa ELEMENT OF GUARDRAILS, IN PARTICULAR OF PANEL GUARDRAILS
FR3114336B1 (en) 2020-09-22 2023-12-22 Outinord St Amand HEATED FORMWORK TO CREATE A CONCRETE ELEMENT
FR3118780B1 (en) 2021-01-14 2023-09-29 Sateco Sa Form comprising at least one edge connection device, set of two forms and connection method
CN112982954A (en) * 2021-02-28 2021-06-18 晟通科技集团有限公司 Settling formwork frame

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH277909A (en) * 1943-10-05 1951-09-30 William Rumble Roy Formwork.
GB1062655A (en) * 1964-05-23 1967-03-22 John Laing Res & Dev Ltd Improvements in formwork for concrete
DE2344945A1 (en) * 1973-09-06 1975-03-13 Huennebeck Gmbh Formwork with beams clamped in holes in main beams - spacer components cause intervening beams to adopt convex shape
FR2318292A2 (en) * 1975-07-17 1977-02-11 Caplat Sylvain Convex foam cored cladding for casting concrete - to compensate for panel flexure to produce flat cast faces
FR2432593A1 (en) * 1978-05-19 1980-02-29 Toulouze Andre Metal shutter panel for concrete wall - has heavy-gauge sheet metal face stiffened by vertical Z-section forming retractable walkway and shores
EP0448120A1 (en) * 1990-03-23 1991-09-25 Niels Dipl.-Ing. Hollmann Shuttering board for concrete

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DE1801912U (en) * 1959-08-26 1959-12-10 Ver Leichtmetallwerke Gmbh FORMWORK PANEL MADE OF ALUMINUM.
DE1892800U (en) * 1964-03-18 1964-05-14 Aluminium Walzwerke Singen HEATABLE FORMWORK PANEL.
DE2253588A1 (en) * 1972-11-02 1974-05-16 Omega Geruestbau Gmbh FORMING FRAME FOR CONCRETE FORMWORK
DE4316151A1 (en) * 1993-03-18 1994-09-22 Kvh Verbautechnik Gmbh Sheeting plate
US20080307729A1 (en) * 2007-04-17 2008-12-18 Maxam Industries Inc. Structural panels

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH277909A (en) * 1943-10-05 1951-09-30 William Rumble Roy Formwork.
GB1062655A (en) * 1964-05-23 1967-03-22 John Laing Res & Dev Ltd Improvements in formwork for concrete
DE2344945A1 (en) * 1973-09-06 1975-03-13 Huennebeck Gmbh Formwork with beams clamped in holes in main beams - spacer components cause intervening beams to adopt convex shape
FR2318292A2 (en) * 1975-07-17 1977-02-11 Caplat Sylvain Convex foam cored cladding for casting concrete - to compensate for panel flexure to produce flat cast faces
FR2432593A1 (en) * 1978-05-19 1980-02-29 Toulouze Andre Metal shutter panel for concrete wall - has heavy-gauge sheet metal face stiffened by vertical Z-section forming retractable walkway and shores
EP0448120A1 (en) * 1990-03-23 1991-09-25 Niels Dipl.-Ing. Hollmann Shuttering board for concrete

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR3016382A1 (en) * 2014-01-14 2015-07-17 Outinord St Amand FORMWORK BANK.
FR3016381A1 (en) * 2014-01-14 2015-07-17 Outinord St Amand SIDE ARMS FOR FORMWORK.
FR3080396A1 (en) * 2018-04-20 2019-10-25 Outinord St Amand FORMING DEVICE HAVING A PLASTIC REAR WALL
EP4303379A1 (en) * 2022-07-08 2024-01-10 Roger De Kalbermatten Composite formwork panel, comprising a non-metallic core and a magnetic metal sheet
FR3137699A1 (en) * 2022-07-08 2024-01-12 Roger de KALBERMATTEN Composite formwork panel, comprising a non-metallic core and a magnetic metal sheet

Also Published As

Publication number Publication date
FR2941254A1 (en) 2010-07-23
ATE544923T1 (en) 2012-02-15
FR2991359A1 (en) 2013-12-06
FR2991359B1 (en) 2015-08-07
FR2941254B1 (en) 2013-08-16
EP2211000B1 (en) 2012-02-08
EP2400080A1 (en) 2011-12-28

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