EP2952653A1 - Secondary panel for modular structure of slab formwork - Google Patents

Secondary panel for modular structure of slab formwork Download PDF

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Publication number
EP2952653A1
EP2952653A1 EP15170909.4A EP15170909A EP2952653A1 EP 2952653 A1 EP2952653 A1 EP 2952653A1 EP 15170909 A EP15170909 A EP 15170909A EP 2952653 A1 EP2952653 A1 EP 2952653A1
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EP
European Patent Office
Prior art keywords
secondary panel
profile
panels
panel
slab formwork
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
EP15170909.4A
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German (de)
French (fr)
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EP2952653B1 (en
EP2952653B8 (en
Inventor
Pascal Perrotin
Sébastien Philippe
Alexandre Souvignet
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.)
Universite Savoie Mont Blanc
Alphi SAS
Original Assignee
Chambery, University of
Universite Savoie Mont Blanc
Alphi SAS
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Application filed by Chambery, University of, Universite Savoie Mont Blanc, Alphi SAS filed Critical Chambery, University of
Publication of EP2952653A1 publication Critical patent/EP2952653A1/en
Publication of EP2952653B1 publication Critical patent/EP2952653B1/en
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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
    • E04G11/36—Forms, shutterings, or falsework for making walls, floors, ceilings, or roofs for floors, ceilings, or roofs of plane or curved surfaces end formpanels for floor shutterings
    • E04G11/38—Forms, shutterings, or falsework for making walls, floors, ceilings, or roofs for floors, ceilings, or roofs of plane or curved surfaces end formpanels for floor shutterings for plane ceilings of concrete
    • 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
    • E04G11/36—Forms, shutterings, or falsework for making walls, floors, ceilings, or roofs for floors, ceilings, or roofs of plane or curved surfaces end formpanels for floor shutterings
    • E04G11/48—Supporting structures for shutterings or frames for floors or roofs

Definitions

  • the present invention relates to a secondary element for modular slab formwork support structure or the like, intended to rest on primary beams of the modular slab formwork support structure or the like.
  • the rigid spacers leave a gap between two secondary beams. This forces a user wandering on the top of the modular slab formwork support structure or the like, when moving transversely relative to the secondary beams, to carefully place his feet to avoid a lack of support or even a fall. And to move in the direction of lengthening secondary beams, the user must be even more careful, like a gymnast on a beam.
  • WO 2013/098159 A1 proposes a secondary element of the panel type, extending longitudinally between two bearing end pieces intended to bear respectively on a primary beam and developing in width in a transverse direction.
  • This secondary panel has two secondary beams between which extends a mesh plate.
  • the mesh plate is retained by its longitudinal lateral ends in longitudinal housing of the secondary beams.
  • a disadvantage of this solution is that it complicates the cross section of the secondary beams of the secondary element, which are thus heavier.
  • the retaining slot provided by means of the longitudinal groove of the secondary beams unfortunately has a tendency to deform and let out the longitudinal edge of the grid plate. If one wants to ensure a better holding of the grid plate in the longitudinal grooves of the secondary beams, it is then necessary to increase the amount of material in the vicinity of these grooves, and thus to further increase the total weight of the secondary panel which then becomes difficult to wear by the users.
  • the screen plate revealing the vacuum under the modular support structure, some users are still not confident and still feel some discomfort to walk on the top of the modular support structure. But the replacement of the grid plate by a solid plate reported is not possible because it would further increase the weight of the secondary panel.
  • the document DE 10 2004 004 883 A1 discloses secondary panels according to the preamble of claim 1. Such secondary panels may be arranged next to each other without interspace. Users are then strongly tempted to pour a concrete slab directly onto the secondary panels, without wooden plates previously arranged on the secondary panels. In this case, the concrete adheres to the secondary panels which are then difficult to remove after solidification of the slab. And remnants of dried concrete can sometimes not be removed from the upper faces of the secondary panels. The upper faces are then no longer flat, which makes said secondary panels unusable.
  • a first problem proposed by the invention is to design a secondary element for modular slab formwork support structure or the like limiting the apprehension of users wandering on top of the modular support structure, despite the presence of a vacuum sometimes important below.
  • the invention aims at designing a secondary element for a modular slab formwork support structure or the like having a satisfactory rigidity while presenting a reduced weight, in order to limit the arduousness of the task of the users during the erection and disassembly of modular slab formwork support structures or the like.
  • the present invention aims at dissuading a user from seeking to pour a concrete slab directly onto the secondary panels, in the absence of a wooden plate on the secondary panels, which would allow the concrete to adhere to the secondary panels. .
  • the use of a monobloc profile avoids the use of fasteners such as rivets or screws likely to deteriorate the faces of the plywood boards, and its inverted U shape provides a high rigidity to do without joists secondary, and to limit the amount of material required for the manufacture of the secondary panel.
  • the upper face thereof after spinning is full, that is to say devoid of through-light, which has the effect of reassuring a user wandering on top of the modular structure of slab formwork support.
  • the excellent rigidity of the secondary panel according to the invention and the solid character of its upper face could have the disadvantage that users would sometimes be tempted to pour a concrete slab directly on the secondary panels and in the absence of plywood boards. previously arranged on the secondary panels.
  • the lateral lugs make it possible to maintain a space between two adjacent secondary panels, this space preventing the user from having a plurality of secondary panels one after the other in a continuous and sealed manner. The user is thus discouraged from seeking to pour a concrete slab directly onto the secondary panels, since the lugs maintain between the adjacent sections spaces through which the concrete would inevitably flow.
  • the cross section of the profile may be such that the upper side of the secondary panel extends in width in the transverse direction of about 30 cm.
  • a profile width provides the secondary panel with satisfactory stability around its longitudinal direction of elongation when it bears against the primary beams of the modular slab formwork support structure or the like. And such a width allows to maintain a relatively contained overall weight not to make too difficult the task of those responsible for the erection or disassembly of the modular support slab formwork structure.
  • the profile may be metallic, preferably aluminum or aluminum alloy.
  • the lateral lugs may advantageously project in the transverse direction and away from the profile at a distance of between about 5 mm and about 20 mm. Such a dimension allows to leave between two adjacent secondary panels a space large enough to deter more strongly a user to pour concrete directly on the secondary panels.
  • each of the upper faces and side faces of the secondary panel is fixed rigidly to the end caps. 'support.
  • the secondary panel 1 extends longitudinally in the longitudinal direction II between two bearing end pieces 2a and 2b intended to bear respectively on a primary beam and developing in width in a transverse direction II-II.
  • the bearing end pieces 2a and 2b are connected to each other by a monobloc profile 3 developing along the longitudinal direction II.
  • the profile 3 has a substantially inverted U-shaped cross section defining an upper face 4 and two side faces 5 and 6 of the secondary panel.
  • the cross section of the profile 3 is such that the upper face 4 of the secondary panel 1 extends in the transverse direction II-II in a width L of about 30 cm.
  • the profile is metal, aluminum or aluminum alloy.
  • the profile 3 comprises a single longitudinal housing 8 opening on the upper face 4 of the secondary panel 1 and for receiving a longitudinal piece 80 of wood.
  • the longitudinal housing 8 is positioned on the upper face 4 of the secondary panel 1, eccentrically in the transverse direction II-II.
  • the figure 3 is a top view of the end of the secondary panel 1 having the support end 2a.
  • the support end piece 2a develops transversely in the direction II-II between a first end 9 and a second end 10.
  • lateral lugs 11 and 12 protrude in the transverse direction II-II and away from the section 3 to maintain a sufficient gap between two adjacent secondary panels 1.
  • the lateral lugs protrude in the transverse direction II-II and away from the profile 3 by a distance d of between about 5 mm and about 20 mm.
  • the support end piece 2a may have only one lateral lug 11 or 12.
  • the support end 2b is identical in all respects to the support end piece 2a.
  • the support end pieces 2a and 2b comprise a lower hooking structure 13, shaped to come into vertical support by simple downward movement on a lateral structure for receiving a primary beam in a vertical bearing area for s' hook to the receiving side structure so as to oppose any axial displacement to and away from the primary beam.
  • the bearing ends 2a and 2b also comprise an upper structure 14 connected by two spacers 15 and 16 to the lower hooking structure 13.
  • the lower hooking structure 13, the upper structure 14 and the two lateral spacers 15 and 16 thus form a perfectly rigid frame to which is fixed, rigidly, each of the upper faces 4 and side 5 and 6 of secondary panels 1.
  • the end pieces 2a and 2b thus maintain well in shape the cross section of the U-shaped section 3 which thus remains very rigid.
  • the figure 4 is a perspective view of a modular slab formwork support structure 17 or the like, comprising struts 18, 19, 20 and 21 interconnected by pairs by primary beams 22 and 23 on which panels are supported 1a to 1f identical to the secondary panels 1 illustrated on the figure 1 .
  • FIG 5 is a top view of the modular structure 17 of the figure 4 , that the end pieces 2a and 2b come into vertical support in a lateral receiving trough 24 or 25 of the primary beams 22 and 23 and are hooked there by virtue of their lower hooking structure 13.
  • the adjacent secondary panels 1a to 1f bear laterally against each other.
  • the profiles 3 of two adjacent secondary panels 1a to 1f are kept apart from each other by lateral pins 11 and 12 carried by the support ends 2a and 2b of one and / or the other of the two adjacent side panels 1a to 1f.
  • Spaces 26a to 26e are thus preserved between the sections 3 of the secondary panels 1a to 1f.

Abstract

Panneau secondaire (1) pour structure modulaire de soutien de coffrage de dalle ou analogue, comportant un profilé (3) monobloc à section transversale sensiblement en forme de U inversé.A secondary panel (1) for a modular slab formwork supporting structure or the like, comprising a monoblock section (3) with a substantially inverted U-shaped cross-section.

Description

La présente invention concerne un élément secondaire pour structure modulaire de soutien de coffrage de dalle ou analogue, destiné à reposer sur des poutrelles primaires de la structure modulaire de soutien de coffrage de dalle ou analogue.The present invention relates to a secondary element for modular slab formwork support structure or the like, intended to rest on primary beams of the modular slab formwork support structure or the like.

On connaît un élément secondaire pour structure modulaire de soutien de coffrage de dalle ou analogue tel que décrit dans le document FR 2 900 176 A1 , qui comporte deux poutrelles secondaires reliées par au moins deux entretoises rigides fixées transversalement entre les deux poutrelles secondaires. Ces éléments secondaires sont ensuite disposés de façon régulière entre deux poutrelles primaires pour former une structure modulaire de soutien de coffrage de dalle ou analogue.There is known a secondary element for modular slab formwork support structure or the like as described in the document FR 2 900 176 A1 , which comprises two secondary beams connected by at least two rigid spacers fixed transversely between the two secondary beams. These secondary elements are then arranged regularly between two primary beams to form a modular slab formwork support structure or the like.

Dans cet élément secondaire, les entretoises rigides laissent subsister un vide entre deux poutrelles secondaires. Cela oblige un utilisateur déambulant sur le dessus de la structure modulaire de soutien de coffrage de dalle ou analogue, lorsqu'il se déplace transversalement par rapport aux poutrelles secondaires, à poser précautionneusement ses pieds pour éviter un défaut d'appui voire une chute. Et pour se déplacer selon la direction d'allongement des poutrelles secondaires, l'utilisateur doit se montrer encore plus prudent, à l'image d'un gymnaste sur une poutre.In this secondary element, the rigid spacers leave a gap between two secondary beams. This forces a user wandering on the top of the modular slab formwork support structure or the like, when moving transversely relative to the secondary beams, to carefully place his feet to avoid a lack of support or even a fall. And to move in the direction of lengthening secondary beams, the user must be even more careful, like a gymnast on a beam.

Pour faciliter la déambulation des utilisateurs sur le dessus de la structure modulaire de soutien de coffrage de dalle ou analogue, on a imaginé rapporter une plaque entre les deux poutrelles secondaires pour former un élément secondaire de type panneau secondaire.To facilitate the wandering of the users on top of the modular slab formwork support structure or the like, it has been imagined to bring a plate between the two secondary beams to form a secondary panel-type secondary element.

Lorsque la plaque est fixée sur les poutrelles secondaires par le dessus, généralement par rivetage ou vissage, l'extrémité supérieure des rivets ou des vis dépasse au-dessus de la face supérieure de la plaque et vient malencontreusement détériorer la face des planches de bois en contreplaqué qui sont disposées sur le dessus des éléments secondaires de la structure modulaire de soutien de coffrage de dalle ou analogue avant que ne soit coulée la dalle en béton. Cette détérioration d'une face des planches oblige par la suite les utilisateurs à bien prendre garde à la face de la planche qu'ils posent sur l'élément secondaire, à défaut de quoi la face inférieure de la dalle coulée peut présenter des défauts de surface.When the plate is fixed on the secondary beams from above, generally by riveting or screwing, the upper end of the rivets or screws protrudes above the upper face of the plate and unfortunately comes to deteriorate the face of the wooden planks. plywood which are disposed on top of the secondary members of the modular slab formwork support structure or the like before the concrete slab is poured. This deterioration of a face of the boards then requires the users to be careful of the face of the board they pose on the secondary element, otherwise the lower face of the cast slab may have defects in area.

Pour éviter cet inconvénient de dégradation des planches de contreplaqué, on a imaginé fixer une plaque entre les deux poutrelles de l'élément secondaire en rapportant celle-ci par le dessous, de sorte que les extrémités en dépassement des rivets ou vis sont orientées vers le dessous et ne se trouvent plus disposées sur la face supérieure de l'élément secondaire destinée à supporter les planches de contreplaqué.To avoid this disadvantage of degradation of the plywood boards, it has been imagined to fix a plate between the two beams of the secondary element by bringing it back from below, so that the ends protruding rivets or screws are oriented towards the bottom and are no longer disposed on the upper face of the secondary element intended to support the plywood boards.

Mais la détérioration ou l'usure des vis et rivets de fixation de la planche ne peut alors pas être perçue visuellement par l'utilisateur, de sorte que cette usure ou cette détérioration n'est hélas détectée que quand un utilisateur, en marchant sur la plaque fixée entre les deux poutrelles secondaires, provoque le détachement de ladite plaque des poutrelles secondaires, risquant par la même occasion une grave chute. De ce fait, les utilisateurs éprouvent un profond malaise à déambuler sur le dessus d'une telle structure modulaire de soutien de coffrage de dalle ou analogue.But deterioration or wear of screws and fastening rivets of the board can not be perceived visually by the user, so that wear or deterioration is unfortunately detected only when a user, walking on the plate fixed between the two secondary beams, causes the detachment of said plate secondary beams, risking at the same time a serious fall. As a result, users experience a profound discomfort in strolling over the top of such a modular slab formwork support structure or the like.

Pour résoudre ce problème, le document WO 2013/098159 A1 propose un élément secondaire de type panneau, s'étendant longitudinalement entre deux embouts d'appui destinés à venir respectivement en appui sur une poutrelle primaire et se développant en largeur selon une direction transversale. Ce panneau secondaire comporte deux poutrelles secondaires entre lesquelles s'étend une plaque grillagée. La plaque grillagée est retenue par ses extrémités latérales longitudinales dans des logements longitudinaux des poutrelles secondaires.To resolve this problem, the document WO 2013/098159 A1 proposes a secondary element of the panel type, extending longitudinally between two bearing end pieces intended to bear respectively on a primary beam and developing in width in a transverse direction. This secondary panel has two secondary beams between which extends a mesh plate. The mesh plate is retained by its longitudinal lateral ends in longitudinal housing of the secondary beams.

Un inconvénient de cette solution est que cela complexifie la section transversale des poutrelles secondaires de l'élément secondaire, qui sont ainsi plus lourdes. De plus, le logement de retenue prévu au moyen de la rainure longitudinale des poutrelles secondaires a malheureusement tendance à se déformer et à laisser échapper le bord longitudinal de la plaque grillagée. Si l'on veut assurer une meilleure tenue de la plaque grillagée dans les rainures longitudinales des poutrelles secondaires, il est alors nécessaire d'augmenter la quantité de matière au voisinage de ces rainures, et donc d'augmenter encore le poids total du panneau secondaire qui devient alors difficile à porter par les utilisateurs. Enfin, la plaque grillagée laissant apparaître le vide sous la structure modulaire de soutien, certains utilisateurs ne sont toujours pas confiants et éprouvent encore un certain malaise à déambuler sur le dessus de la structure modulaire de soutien. Mais le remplacement de la plaque grillagée par une plaque pleine rapportée n'est pas envisageable car cela augmenterait encore le poids du panneau secondaire.A disadvantage of this solution is that it complicates the cross section of the secondary beams of the secondary element, which are thus heavier. In addition, the retaining slot provided by means of the longitudinal groove of the secondary beams unfortunately has a tendency to deform and let out the longitudinal edge of the grid plate. If one wants to ensure a better holding of the grid plate in the longitudinal grooves of the secondary beams, it is then necessary to increase the amount of material in the vicinity of these grooves, and thus to further increase the total weight of the secondary panel which then becomes difficult to wear by the users. Finally, the screen plate revealing the vacuum under the modular support structure, some users are still not confident and still feel some discomfort to walk on the top of the modular support structure. But the replacement of the grid plate by a solid plate reported is not possible because it would further increase the weight of the secondary panel.

Le document DE 10 2004 004 883 A1 décrit des panneaux secondaires selon le préambule de la revendication 1. De tels panneaux secondaires peuvent être disposés les uns à côté des autres sans espace intercalaire. Les utilisateurs sont alors fortement tentés de couler une dalle de béton directement sur les panneaux secondaires, sans plaques de bois préalablement disposées sur les panneaux secondaires. Dans ce cas, le béton adhère aux panneaux secondaires qui sont alors difficiles à retirer après solidification de la dalle. Et des restes de béton séché ne peuvent parfois pas être retirés des faces supérieures des panneaux secondaires. Les faces supérieures ne sont alors plus planes, ce qui rend lesdits panneaux secondaires inutilisables.The document DE 10 2004 004 883 A1 discloses secondary panels according to the preamble of claim 1. Such secondary panels may be arranged next to each other without interspace. Users are then strongly tempted to pour a concrete slab directly onto the secondary panels, without wooden plates previously arranged on the secondary panels. In this case, the concrete adheres to the secondary panels which are then difficult to remove after solidification of the slab. And remnants of dried concrete can sometimes not be removed from the upper faces of the secondary panels. The upper faces are then no longer flat, which makes said secondary panels unusable.

Un premier problème proposé par l'invention est de concevoir un élément secondaire pour structure modulaire de soutien de coffrage de dalle ou analogue limitant l'appréhension des utilisateurs déambulant sur le dessus de la structure modulaire de soutien, malgré la présence d'un vide parfois important situé en dessous.A first problem proposed by the invention is to design a secondary element for modular slab formwork support structure or the like limiting the apprehension of users wandering on top of the modular support structure, despite the presence of a vacuum sometimes important below.

Selon un autre aspect, l'invention vise à concevoir un élément secondaire pour structure modulaire de soutien de coffrage de dalle ou analogue présentant une rigidité satisfaisante tout en présentant un poids réduit, afin de limiter la pénibilité de la tâche des utilisateurs lors de l'érection et du démontage des structures modulaires de soutien de coffrage de dalle ou analogue.According to another aspect, the invention aims at designing a secondary element for a modular slab formwork support structure or the like having a satisfactory rigidity while presenting a reduced weight, in order to limit the arduousness of the task of the users during the erection and disassembly of modular slab formwork support structures or the like.

Selon encore un autre aspect, la présente invention vise à dissuader un utilisateur de chercher à couler une dalle en béton directement sur les panneaux secondaires, en l'absence de plaque de bois sur les panneaux secondaires, ce qui laisserait adhérer le béton aux panneaux secondaires.According to yet another aspect, the present invention aims at dissuading a user from seeking to pour a concrete slab directly onto the secondary panels, in the absence of a wooden plate on the secondary panels, which would allow the concrete to adhere to the secondary panels. .

Pour atteindre ces objets ainsi que d'autres, l'invention propose un panneau secondaire pour structure modulaire de soutien de coffrage de dalle ou analogue, s'étendant longitudinalement entre deux embouts d'appui destinés à venir respectivement en appui sur une poutrelle primaire, et se développant en largeur selon une direction transversale, dans lequel :

  • les embouts d'appui sont reliés entre eux par un profilé monobloc se développant selon la direction longitudinale,
  • le profilé comporte une section transversale sensiblement en forme de U inversé définissant une face supérieure pleine et deux faces latérales de panneau secondaire,
selon l'invention :
  • les embouts d'appui se développent transversalement entre une première et une deuxième extrémités,
  • chacun des embouts d'appui comporte, au moins à une de ses première ou deuxième extrémités, un ergot latéral faisant saillie selon la direction transversale et à l'écart du profilé.
To achieve these objects as well as others, the invention proposes a secondary panel for modular slab formwork support structure or the like, extending longitudinally between two support end pieces intended to bear respectively on a primary beam, and developing in width in a transverse direction, wherein:
  • the support ends are interconnected by a one-piece profile developing in the longitudinal direction,
  • the profile has a substantially inverted U-shaped cross section defining a solid upper face and two secondary panel side faces,
according to the invention:
  • the support tips develop transversely between first and second ends,
  • each of the support tips comprises, at least at one of its first or second ends, a lateral lug protruding in the transverse direction and away from the profile.

L'utilisation d'un profilé monobloc évite d'avoir recours à des pièces de fixation telles que des rivets ou vis susceptibles de détériorer les faces des planches en contreplaqué, et sa forme en U inversé procure une rigidité importante permettant de se passer de poutrelles secondaires, et de limiter la quantité de matière nécessaire pour la fabrication du panneau secondaire.The use of a monobloc profile avoids the use of fasteners such as rivets or screws likely to deteriorate the faces of the plywood boards, and its inverted U shape provides a high rigidity to do without joists secondary, and to limit the amount of material required for the manufacture of the secondary panel.

S'agissant d'un profilé, la face supérieure de celui-ci après filage est pleine, c'est-à-dire dépourvue de lumière traversante, ce qui a pour effet de rassurer un utilisateur déambulant sur le dessus de la structure modulaire de soutien de coffrage de dalle.As it is a profile, the upper face thereof after spinning is full, that is to say devoid of through-light, which has the effect of reassuring a user wandering on top of the modular structure of slab formwork support.

L'excellente rigidité du panneau secondaire selon l'invention et le caractère plein de sa face supérieure pourraient présenter l'inconvénient que les utilisateurs seraient parfois tentés de couler une dalle de béton directement sur les panneaux secondaires et en l'absence de planches en contreplaqué disposées préalablement sur les panneaux secondaires.The excellent rigidity of the secondary panel according to the invention and the solid character of its upper face could have the disadvantage that users would sometimes be tempted to pour a concrete slab directly on the secondary panels and in the absence of plywood boards. previously arranged on the secondary panels.

Toutefois, les ergots latéraux permettent de maintenir un espace entre deux panneaux secondaires adjacents, cet espace empêchant l'utilisateur de disposer une pluralité de panneaux secondaires les uns à la suite des autres de façon continue et étanche. L'utilisateur est ainsi dissuadé de chercher à couler une dalle en béton directement sur les panneaux secondaires, car les ergots maintiennent entre les profilés adjacents des espaces à travers lesquels le béton coulerait inévitablement.However, the lateral lugs make it possible to maintain a space between two adjacent secondary panels, this space preventing the user from having a plurality of secondary panels one after the other in a continuous and sealed manner. The user is thus discouraged from seeking to pour a concrete slab directly onto the secondary panels, since the lugs maintain between the adjacent sections spaces through which the concrete would inevitably flow.

De préférence, la section transversale du profilé peut être telle que la face supérieure de panneau secondaire s'étend en largeur selon la direction transversale selon environ 30 cm. Une telle largeur de profilé procure au panneau secondaire une stabilité satisfaisante autour de sa direction longitudinale d'allongement lorsqu'il est en appui sur les poutrelles primaires de la structure modulaire de soutien de coffrage de dalle ou analogue. Et une telle largeur permet de conserver un poids global relativement contenu pour ne pas rendre trop pénible la tâche des personnes chargées de l'érection ou du démontage de la structure modulaire de soutien de coffrage de dalle.Preferably, the cross section of the profile may be such that the upper side of the secondary panel extends in width in the transverse direction of about 30 cm. Such a profile width provides the secondary panel with satisfactory stability around its longitudinal direction of elongation when it bears against the primary beams of the modular slab formwork support structure or the like. And such a width allows to maintain a relatively contained overall weight not to make too difficult the task of those responsible for the erection or disassembly of the modular support slab formwork structure.

Avantageusement, le profilé peut être métallique, de préférence en aluminium ou alliage d'aluminium.Advantageously, the profile may be metallic, preferably aluminum or aluminum alloy.

De préférence, on peut prévoir que :

  • le profilé comporte un unique logement longitudinal débouchant sur la face supérieure de panneau secondaire et destiné à recevoir une pièce longitudinale en bois,
  • le logement longitudinal est positionné, sur la face supérieure de panneau secondaire, de façon excentrée selon la direction transversale.
Preferably, it can be provided that:
  • the profile comprises a single longitudinal housing opening on the upper side of the secondary panel and intended to receive a longitudinal piece of wood,
  • the longitudinal housing is positioned on the upper side of the secondary panel eccentrically in the transverse direction.

Il est ainsi possible de fixer une plaque de contreplaqué sur le panneau secondaire, avant coulage de la dalle en béton, par l'intermédiaire de clous venant en prise dans la pièce longitudinale en bois contenue dans le logement longitudinal du profilé. Le caractère excentré de la position du logement longitudinal recevant la pièce longitudinale en bois permet, dans le cas où la planche en contreplaqué s'arrête avant de se trouver au-dessus du logement longitudinal, d'inverser le posage du panneau secondaire sur les poutrelles primaires de la structure modulaire de soutien de coffrage de dalle ou analogue, de façon que le logement longitudinal se retrouve sous la planche de contreplaqué pour son clouage. Ainsi, il est possible de n'avoir recours qu'à un unique logement longitudinal recevant une pièce longitudinale en bois, et ce dans le but d'éviter de compliquer la section transversale du profilé et de limiter le poids du profilé.It is thus possible to fix a plywood plate on the secondary panel, before pouring the concrete slab, by means of nails engaging in the longitudinal wooden piece contained in the longitudinal housing of the profile. The eccentric nature of the position of the longitudinal housing receiving the longitudinal piece of wood allows, in the case where the plywood board stops before being above the longitudinal housing, to reverse the setting of the secondary panel on the beams. primary of the modular slab formwork support structure or the like, so that the longitudinal housing is found under the plywood board for its nailing. Thus, it is possible to have recourse to a single longitudinal housing receiving a longitudinal piece of wood, and this in order to avoid complicating the cross section of the profile and limit the weight of the profile.

Les ergots latéraux peuvent avantageusement faire saillie selon la direction transversale et à l'écart du profilé selon une distance comprise entre environ 5 mm et environ 20 mm. Une telle dimension permet de laisser subsister entre deux panneaux secondaires adjacents un espace suffisamment grand pour dissuader plus fortement un utilisateur de couler du béton directement sur les panneaux secondaires.The lateral lugs may advantageously project in the transverse direction and away from the profile at a distance of between about 5 mm and about 20 mm. Such a dimension allows to leave between two adjacent secondary panels a space large enough to deter more strongly a user to pour concrete directly on the secondary panels.

Avantageusement, pour éviter le risque de déformation de la section transversale en forme de U inversé du profilé et maintenir ainsi une excellente rigidité dudit profilé, on peut prévoir que chacune des face supérieure et faces latérales de panneau secondaire est fixée de façon rigide aux embouts d'appui. On peut notamment recourir à une fixation par soudure.Advantageously, to avoid the risk of deformation of the inverted U-shaped cross-section of the profile and thus maintain an excellent rigidity of said profile, it can be provided that each of the upper faces and side faces of the secondary panel is fixed rigidly to the end caps. 'support. One can in particular use a fixing by welding.

D'autres objets, caractéristiques et avantages de la présente invention ressortiront de la description suivante de modes de réalisation particuliers, faite en relation avec les figures jointes, parmi lesquelles :

  • la figure 1 est une vue en perspective d'un mode de réalisation particulier de panneau secondaire selon l'invention ;
  • la figure 2 est une vue en coupe transversale du panneau secondaire de la figure 1 ;
  • la figure 3 est une vue de dessus d'une extrémité du panneau secondaire de la figure 1 ;
  • la figure 4 est une vue en perspective d'une structure modulaire de soutien de coffrage de dalle ou analogue utilisant une pluralité de panneaux secondaires identiques au panneau secondaire de la figure 1 ; et
  • la figure 5 est une vue de dessus de la structure modulaire de soutien de coffrage de dalle ou analogue de la figure 4.
Other objects, features and advantages of the present invention will become apparent from the following description of particular embodiments, with reference to the accompanying drawings, in which:
  • the figure 1 is a perspective view of a particular embodiment of secondary panel according to the invention;
  • the figure 2 is a cross-sectional view of the secondary panel of the figure 1 ;
  • the figure 3 is a top view of one end of the secondary panel of the figure 1 ;
  • the figure 4 is a perspective view of a modular slab formwork support structure or the like using a plurality of secondary panels identical to the secondary panel of the figure 1 ; and
  • the figure 5 is a top view of the modular slab formwork support structure or the like of the figure 4 .

Sur les figures 1 à 3 est illustré un mode de réalisation particulier de panneaux secondaires selon l'invention pour structure modulaire de soutien de coffrage de dalle ou analogue.On the Figures 1 to 3 is illustrated a particular embodiment of secondary panels according to the invention for modular slab formwork support structure or the like.

Le panneau secondaire 1 s'étend longitudinalement selon la direction longitudinale I-I entre deux embouts d'appui 2a et 2b destinés à venir respectivement en appui sur une poutrelle primaire et se développant en largeur selon une direction transversale II-II. Les embouts d'appui 2a et 2b sont reliés entre eux par un profilé 3 monobloc se développant selon la direction longitudinale I-I. Comme plus particulièrement illustré sur la figure 2, le profilé 3 comporte une section transversale sensiblement en forme de U inversé définissant une face supérieure 4 et deux faces latérales 5 et 6 de panneau secondaire.The secondary panel 1 extends longitudinally in the longitudinal direction II between two bearing end pieces 2a and 2b intended to bear respectively on a primary beam and developing in width in a transverse direction II-II. The bearing end pieces 2a and 2b are connected to each other by a monobloc profile 3 developing along the longitudinal direction II. As more particularly illustrated on the figure 2 , the profile 3 has a substantially inverted U-shaped cross section defining an upper face 4 and two side faces 5 and 6 of the secondary panel.

La section transversale du profilé 3 est telle que la face supérieure 4 de panneau secondaire 1 s'étend selon la direction transversale II-II selon une largeur L d'environ 30 cm.The cross section of the profile 3 is such that the upper face 4 of the secondary panel 1 extends in the transverse direction II-II in a width L of about 30 cm.

Le profilé est métallique, en aluminium ou alliage d'aluminium.The profile is metal, aluminum or aluminum alloy.

S'agissant d'un profilé fabriqué par filage, celui-ci présente une face supérieure 4 pleine, dépourvue de lumière traversante.As it is a profile made by spinning, it has a solid upper face 4, devoid of through-light.

On voit plus particulièrement sur la figure 2 que le profilé 3 comporte un unique logement longitudinal 8 débouchant sur la face supérieure 4 de panneau secondaire 1 et destiné à recevoir une pièce longitudinale 80 en bois.We see more particularly on the figure 2 that the profile 3 comprises a single longitudinal housing 8 opening on the upper face 4 of the secondary panel 1 and for receiving a longitudinal piece 80 of wood.

Le logement longitudinal 8 est positionné, sur la face supérieure 4 du panneau secondaire 1, de façon excentrée selon la direction transversale II-II.The longitudinal housing 8 is positioned on the upper face 4 of the secondary panel 1, eccentrically in the transverse direction II-II.

La figure 3 est une vue de dessus de l'extrémité du panneau secondaire 1 comportant l'embout d'appui 2a.The figure 3 is a top view of the end of the secondary panel 1 having the support end 2a.

Sur cette figure, on voit que l'embout d'appui 2a se développe transversalement selon la direction II-II entre une première extrémité 9 et une deuxième extrémité 10. A chacune des première et deuxième extrémités 9 et 10, des ergots latéraux 11 et 12 font saillie selon la direction transversale II-II et à l'écart du profilé 3 pour maintenir un écart suffisant entre deux panneaux secondaires 1 adjacents. Les ergots latéraux font saillie selon la direction transversale II-II et à l'écart du profilé 3 selon une distance d comprise entre environ 5 mm et environ 20 mm.In this figure, it can be seen that the support end piece 2a develops transversely in the direction II-II between a first end 9 and a second end 10. At each of the first and second ends 9 and 10, lateral lugs 11 and 12 protrude in the transverse direction II-II and away from the section 3 to maintain a sufficient gap between two adjacent secondary panels 1. The lateral lugs protrude in the transverse direction II-II and away from the profile 3 by a distance d of between about 5 mm and about 20 mm.

Il doit être précisé que l'embout d'appui 2a peut ne comporter qu'un seul ergot latéral 11 ou 12.It should be specified that the support end piece 2a may have only one lateral lug 11 or 12.

L'embout d'appui 2b est en tout point identique à l'embout d'appui 2a.The support end 2b is identical in all respects to the support end piece 2a.

Les ergots latéraux 11 et/ou 12 des embouts d'appui 2a et 2b permettent de maintenir un écart entre les profilés 3 de deux panneaux secondaires 1 adjacents qui est :

  • suffisamment grand pour laisser couler le béton entre les panneaux secondaires 1 adjacents si l'utilisateur venait à couler la dalle en béton sur les panneaux secondaires 1 en l'absence de planches en contreplaqué ;
  • suffisamment petit pour éviter aux utilisateurs déambulant sur la structure modulaire de soutien d'éprouver un malaise par la perception du vide se trouvant en dessous de la structure modulaire de soutien de coffrage de dalle ou analogue.
The lateral lugs 11 and / or 12 of the bearing ends 2a and 2b make it possible to maintain a gap between the sections 3 of two adjacent secondary panels 1 which is:
  • large enough to let the concrete flow between the adjacent secondary panels 1 if the user had to pour the concrete slab on the secondary panels 1 in the absence of plywood boards;
  • small enough to prevent users walking on the modular support structure from experiencing discomfort by perceiving the void below the modular slab formwork support structure or the like.

On voit plus particulièrement sur la figure 1 que les embouts d'appui 2a et 2b comportent une structure inférieure de crochetage 13, conformée pour venir en appui vertical par simple déplacement vers le bas sur une structure latérale de réception d'une poutrelle primaire selon une zone d'appui vertical pour s'accrocher à la structure latérale de réception de façon à s'opposer à tout déplacement axial vers et à l'écart de la poutrelle primaire.We see more particularly on the figure 1 that the support end pieces 2a and 2b comprise a lower hooking structure 13, shaped to come into vertical support by simple downward movement on a lateral structure for receiving a primary beam in a vertical bearing area for s' hook to the receiving side structure so as to oppose any axial displacement to and away from the primary beam.

Les embouts d'appui 2a et 2b comportent également une structure supérieure 14 reliée par deux entretoises 15 et 16 à la structure inférieure de crochetage 13. La structure inférieure de crochetage 13, la structure supérieure 14 et les deux entretoises latérales 15 et 16 forment ainsi un cadre parfaitement rigide auquel est fixée, de façon rigide, chacune des faces supérieure 4 et latérales 5 et 6 de panneaux secondaires 1. Les embouts 2a et 2b maintiennent ainsi bien en forme la section transversale du profilé 3 en forme de U qui reste ainsi bien rigide. En particulier, la structure inférieure de crochetage 13, qui relie entre elles les entretoises latérales 15 et 16 sur lesquelles sont fixées les faces latérales 5 et 6 du profilé 3, empêche tout déplacement des deux faces latérales 5 et 6 à l'écart l'une de l'autre sous l'effet d'une charge portée sur la face supérieure 4 du panneau secondaire 1.The bearing ends 2a and 2b also comprise an upper structure 14 connected by two spacers 15 and 16 to the lower hooking structure 13. The lower hooking structure 13, the upper structure 14 and the two lateral spacers 15 and 16 thus form a perfectly rigid frame to which is fixed, rigidly, each of the upper faces 4 and side 5 and 6 of secondary panels 1. The end pieces 2a and 2b thus maintain well in shape the cross section of the U-shaped section 3 which thus remains very rigid. In particular, the lower hooking structure 13, which interconnects the lateral spacers 15 and 16 on which are fixed the lateral faces 5 and 6 of the profile 3, prevents any displacement of the two lateral faces 5 and 6 away from the one under the effect of a load carried on the upper face 4 of the secondary panel 1.

La figure 4 est une vue en perspective d'une structure modulaire 17 de soutien de coffrage de dalle ou analogue, comportant des étais 18, 19, 20 et 21 reliés entre eux par paire par des poutrelles primaires 22 et 23 sur lesquelles sont disposés en appui des panneaux secondaires 1a à 1f identiques aux panneaux secondaires 1 illustrés sur la figure 1.The figure 4 is a perspective view of a modular slab formwork support structure 17 or the like, comprising struts 18, 19, 20 and 21 interconnected by pairs by primary beams 22 and 23 on which panels are supported 1a to 1f identical to the secondary panels 1 illustrated on the figure 1 .

On voit plus particulièrement sur la figure 5, qui est une vue de dessus de la structure modulaire 17 de la figure 4, que les embouts 2a et 2b viennent en appui vertical dans une goulotte latérale de réception 24 ou 25 des poutrelles primaires 22 et 23 et y sont accrochés grâce à leur structure inférieure de crochetage 13.We see more particularly on the figure 5 which is a top view of the modular structure 17 of the figure 4 , that the end pieces 2a and 2b come into vertical support in a lateral receiving trough 24 or 25 of the primary beams 22 and 23 and are hooked there by virtue of their lower hooking structure 13.

Les panneaux secondaires adjacents 1a à 1f sont en appui latéralement les uns contre les autres.The adjacent secondary panels 1a to 1f bear laterally against each other.

Les profilés 3 de deux panneaux secondaires 1a à 1f adjacents sont maintenus à l'écart les uns des autres par des ergots latéraux 11 et 12 portés par les embouts d'appui 2a et 2b de l'un et/ou l'autre des deux panneaux secondaires 1a à 1f adjacents.The profiles 3 of two adjacent secondary panels 1a to 1f are kept apart from each other by lateral pins 11 and 12 carried by the support ends 2a and 2b of one and / or the other of the two adjacent side panels 1a to 1f.

Des espaces 26a à 26e sont ainsi conservés entre les profilés 3 des panneaux secondaires 1 a à 1f.Spaces 26a to 26e are thus preserved between the sections 3 of the secondary panels 1a to 1f.

La présente invention n'est pas limitée aux modes de réalisation qui ont été explicitement décrits, mais elle en inclut les diverses variantes et généralisations contenues dans le domaine des revendications ci-après.The present invention is not limited to the embodiments which have been explicitly described, but it includes the various variants and generalizations thereof within the scope of the claims below.

Claims (7)

Panneau secondaire (1) pour structure modulaire (17) de soutien de coffrage de dalle ou analogue, s'étendant longitudinalement entre deux embouts d'appui (2a, 2b) destinés à venir respectivement en appui sur une poutrelle primaire (22, 23) et se développant en largeur selon une direction transversale (II-II), dans lequel : - les embouts d'appui (2a, 2b) sont reliés entre eux par un profilé (3) monobloc se développant selon la direction longitudinale (I-I), - le profilé (3) comporte une section transversale sensiblement en forme de U inversé définissant une face supérieure (4) pleine et deux faces latérales (5, 6) de panneau secondaire (1), caractérisé en ce que : - les embouts d'appui (2a, 2b) se développent transversalement entre une première (9) et une deuxième (10) extrémités, - chacun des embouts d'appui (2a, 2b) comporte, au moins à une de ses première (9) ou deuxième (10) extrémités, un ergot latéral (11, 12) faisant saillie selon la direction transversale (II-II) et à l'écart du profilé (3). Secondary panel (1) for a modular slab formwork supporting structure (17) or the like, extending longitudinally between two bearing end pieces (2a, 2b) intended to bear respectively on a primary beam (22, 23) and developing in width in a transverse direction (II-II), wherein: the bearing ends (2a, 2b) are interconnected by a single-piece profile (3) developing along the longitudinal direction (II), the profile (3) has a substantially inverted U-shaped cross-section defining a solid upper face (4) and two lateral faces (5, 6) of secondary panel (1), characterized in that the support ends (2a, 2b) develop transversely between a first (9) and a second (10) end, each of the bearing end pieces (2a, 2b) comprises, at least at one of its first (9) or second (10) ends, a lateral lug (11, 12) projecting in the transverse direction (II-II) and away from the profile (3). Panneau secondaire (1) selon la revendication 1, caractérisé en ce que la section transversale du profilé (3) est telle que la face supérieure (4) de panneau secondaire (1) s'étend en largeur (L) selon la direction transversale (II-II) selon environ 30 cm.Secondary panel (1) according to claim 1, characterized in that the cross section of the profile (3) is such that the upper side (4) of the secondary panel (1) extends in width (L) in the transverse direction ( II-II) about 30 cm. Panneau secondaire (1) selon l'une des revendications 1 ou 2, caractérisé en ce que le profilé (3) est métallique, de préférence en aluminium ou alliage d'aluminium.Secondary panel (1) according to one of claims 1 or 2, characterized in that the profile (3) is metallic, preferably aluminum or aluminum alloy. Panneau secondaire (1) selon l'une quelconque des revendications 1 à 3, caractérisé en ce que : - le profilé comporte un unique logement longitudinal (8) débouchant sur la face supérieure (4) de panneau secondaire (1) et destiné à recevoir une pièce longitudinale (80) en bois, - le logement longitudinal (8) est positionné, sur la face supérieure (4) de panneau secondaire (1), de façon excentrée selon la direction transversale (II-II). Secondary panel (1) according to any one of claims 1 to 3, characterized in that : - The profile has a single longitudinal housing (8) opening on the upper face (4) of the secondary panel (1) and for receiving a longitudinal piece (80) of wood, - The longitudinal housing (8) is positioned on the upper side (4) of the secondary panel (1) eccentrically in the transverse direction (II-II). Panneau secondaire (1) selon l'une quelconque des revendications 1 à 4, caractérisé en ce que chacune des face supérieure (4) et faces latérales (5, 6) de panneau secondaire (1) est fixée de façon rigide aux embouts d'appui (2a, 2b).Secondary panel (1) according to any one of claims 1 to 4, characterized in that each of the upper faces (4) and side faces (5, 6) of the secondary panel (1) is fixed rigidly to the end pieces. support (2a, 2b). Structure modulaire (17) de soutien de coffrage de dalle ou analogue, comportant des étais (18-21) reliés entre eux par des poutrelles primaires (22, 23) sur lesquelles sont disposés en appui des panneaux secondaires (1a-1f) selon l'une quelconque des revendications 1 à 5.Modular structure (17) slab formwork support or the like, comprising struts (18-21) interconnected by joists primary (22, 23) on which are supported secondary panels (1a-1f) according to any one of claims 1 to 5. Structure modulaire (17) de soutien de coffrage de dalle ou analogue, comportant des étais (18-21) reliés entre eux par des poutrelles primaires (22, 23) sur lesquelles sont disposés en appui des panneaux secondaires (1a-1f) selon l'une quelconque des revendications 1 à 6, dans laquelle : - les panneaux secondaires (1a-1f) adjacents sont en appui latéralement les uns contre les autres, - les profilés (3) de deux panneaux secondaires (1a-1f) adjacents sont maintenus à l'écart les uns des autres par des ergots latéraux (11, 12) portés par les embouts d'appui (2a, 2b) de l'un et/ou l'autre des deux panneaux secondaires (1a-1f) adjacents. Modular slab formwork supporting structure (17) or the like, comprising struts (18-21) interconnected by primary beams (22, 23) on which secondary panels (1a-1f) are supported by any one of claims 1 to 6, wherein: the adjacent secondary panels (1a-1f) bear against each other laterally, - The profiles (3) of two adjacent secondary panels (1a-1f) are kept apart from each other by lateral pins (11, 12) carried by the bearing ends (2a, 2b) of the one and / or the other of the two adjacent secondary panels (1a-1f).
EP15170909.4A 2014-06-05 2015-06-05 Secondary panel for modular structure of slab formwork Active EP2952653B8 (en)

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FR1455135A FR3021984B1 (en) 2014-06-05 2014-06-05 SECONDARY PANEL FOR MODULAR SLAB FORMWORK STRUCTURE

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FR3125077B1 (en) 2021-07-12 2023-10-27 Alphi IMPROVED PROP FOR MODULAR SLAB FORMWORK SUPPORT STRUCTURE
FR3127438B1 (en) 2021-09-27 2023-10-06 Alphi METHOD FOR REDUCING THE ADHESION OF FOREIGN BODIES ON THE SURFACE OF A METAL SUBSTRATE
FR3134403B1 (en) 2022-04-08 2024-03-15 Alphi IMPROVED PROP FOR MODULAR SLAB FORMWORK SUPPORT STRUCTURE

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FR3021984A1 (en) 2015-12-11
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FR3021984B1 (en) 2017-07-21

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