EP0533647A1 - Mixed construction wall and profiled sheet metal for such a wall - Google Patents

Mixed construction wall and profiled sheet metal for such a wall Download PDF

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Publication number
EP0533647A1
EP0533647A1 EP92870148A EP92870148A EP0533647A1 EP 0533647 A1 EP0533647 A1 EP 0533647A1 EP 92870148 A EP92870148 A EP 92870148A EP 92870148 A EP92870148 A EP 92870148A EP 0533647 A1 EP0533647 A1 EP 0533647A1
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EP
European Patent Office
Prior art keywords
folded
adjacent
openings
rib
edges
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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.)
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EP92870148A
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German (de)
French (fr)
Inventor
A. Bruls
H. Blaffart
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Metal Profil Belgium SA
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Metal Profil Belgium SA
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Publication of EP0533647A1 publication Critical patent/EP0533647A1/en
Withdrawn legal-status Critical Current

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    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B5/00—Floors; Floor construction with regard to insulation; Connections specially adapted therefor
    • E04B5/16—Load-carrying floor structures wholly or partly cast or similarly formed in situ
    • E04B5/32—Floor structures wholly cast in situ with or without form units or reinforcements
    • E04B5/36—Floor structures wholly cast in situ with or without form units or reinforcements with form units as part of the floor
    • E04B5/38—Floor structures wholly cast in situ with or without form units or reinforcements with form units as part of the floor with slab-shaped form units acting simultaneously as reinforcement; Form slabs with reinforcements extending laterally outside the element
    • E04B5/40—Floor structures wholly cast in situ with or without form units or reinforcements with form units as part of the floor with slab-shaped form units acting simultaneously as reinforcement; Form slabs with reinforcements extending laterally outside the element with metal form-slabs

Definitions

  • the invention relates to a mixed wall, comprising a formwork made up at least partially of prefabricated profiled metal sheets placed with their lateral edges one against the other and forming together, at regular distances, hollow ribs which are parallel to the lateral edges. , and a concrete slab poured into this formwork.
  • Walls of this kind are often preferred to walls formed by concrete slabs because of their lightness, their ease of realization and their mechanical qualities with a minimum of concrete.
  • the metal sheets, normally steel, form a permanent part of the formwork, are structurally combined with hardened concrete and partially and sometimes completely replace the tensile reinforcement of the wall.
  • the object of the invention is to remedy these drawbacks and to provide a mixed wall having excellent mechanical qualities due to an excellent joining of the sheets to the concrete and having a remarkable fire resistance.
  • each sheet ends on the side of an adjacent sheet by approximately half of a hollow rib, such a rib therefore being formed between two adjacent sheets, the adjacent lateral edges of these sheets being folded so as to comprising over almost their entire length an edge portion extending towards the inside of the rib over a distance substantially less than the depth of the rib, this edge portion being provided with openings in which concrete has introduced, these adjacent edge portions covering each other.
  • the concrete that has entered the openings provides an excellent bond between the sheet and the concrete.
  • the openings in the adjacent edge parts of two adjacent sheets are located at least partially opposite one another, concrete passing through on either side of the openings in the two parts of edge.
  • the concrete somehow forms rivets through openings, further improving the sheet-concrete connection.
  • the side edges are folded so as to comprise two edge parts, one part extending inwards and one part making an angle with the previous one, the parts making an angle of two adjacent side edges being located on the same side with respect to the inwardly extending and overlapping portions.
  • these parts extending at an angle are also provided with openings one located at least partially opposite the other.
  • the air trapped below these parts extending at an angle, that is to say in practice parallel to the plane of the wall, during the pouring of the concrete can escape through these openings.
  • the mixed wall may optionally include additional reinforcements such as for example a reinforcing bar above the adjacent folded edges, a trellis placed on the metal sheets, continuity bars placed on the trellis or a connecting reinforcement hooked by a end in corresponding openings of the parts extending inwards from the adjacent lateral edges and resting at its other end on the trellis.
  • additional reinforcements such as for example a reinforcing bar above the adjacent folded edges, a trellis placed on the metal sheets, continuity bars placed on the trellis or a connecting reinforcement hooked by a end in corresponding openings of the parts extending inwards from the adjacent lateral edges and resting at its other end on the trellis.
  • the invention also relates to a profiled sheet obviously intended for the mixed wall according to one or the other of the preceding embodiments.
  • the invention thus relates to a profiled metal sheet characterized in that it has two lateral edges forming approximately half of a hollow rib, these lateral edges being folded so as to comprise an edge part extending towards the inside of the rib and provided with openings.
  • the mixed horizontal wall shown in the figures essentially comprises a number of profiled steel sheets 1 placed side by side with their lateral edges fitting together, these sheets forming a permanent and substantial part of the formwork and at the same time an armature lower, and a hardened concrete slab 3, poured on site on the upper face 2 of the sheets 1.
  • the sheets 1 are profiled so as to form a flat upper central part 4 and, on either side of this part, half of a hollow rib 5 projecting downward from the central part 4, this half ending with a folded edge 6.
  • a hollow rib 5 is therefore formed between each pair of adjacent sheets 1.
  • This rib 5 has a lower part 7 slightly flared upwards and an upper part 8 strongly flared.
  • the sheets 1 are modular and have a width of 60 cm which is also the distance between the centers of two adjacent ribs 5.
  • the dimensions of the hollow ribs 5 are determined as a function of the resistance requirements of the wall, of the ease of pouring the concrete and of the coating of any additional reinforcements, in particular in the case of desired high fire resistance.
  • each rib half 5 by which a sheet 1 ends, is folded as shown in detail in FIG. 2, so as to form on any its length a hook comprising parts 9, 10 and 11.
  • the part 9 extends towards the inside of the corresponding hollow rib 5, at a slight angle relative to the vertical and up to a distance substantially less than the depth of the hollow rib, for example over a distance of about five cm.
  • Part 10 extends in a horizontal direction from the upper end of part 9 but is slightly curved in this direction so as to form a slight hollow.
  • the part 11 then forms a rim projecting downwards at the end of the part 10 which is distant from the part 9.
  • the horizontal parts 10 of the two folded edges 6 of the same sheet 1 are located on the same side with respect to the parts 9 to which they are connected. This side is also opposite to the direction in which the corresponding parts 9 are slightly inclined.
  • one of the side edges 6 of the same sheet 1 is slightly larger than the other folded side edge 6.
  • the sheets 1 are placed so that the largest folded edge 6 of a sheet 1 is superimposed on the edge folded 6 the smallest of an adjacent sheet 1. Before pouring the concrete 3, a perfect seal and a solid connection between the sheets 1 is thus obtained.
  • each folded edge 6 is provided every fifty millimeters with a round opening 12 having a diameter of twenty to thirty millimeters.
  • the horizontal part 10 of each folded edge 6 is also provided every fifty millimeters with a smaller round opening 13, that is to say having a diameter of about 10 millimeters. If the openings 12 in the parts 9 of the two folded edges 6 adjacent and cooperating are, as shown in the figures, one completely opposite the other, maximum efficiency of the connection is obtained. Automatically the openings 13 in the parts 10 of these cooperating edges are also completely opposite one another. To limit the loss of resistance due to the perforation of the sheet, the openings 12 and 13 can be offset by half a spacing.
  • Concrete 3 crosses the aforementioned openings 12 and somehow forms a rivet joining the sheets 1 and the concrete 3, the hook shape of the folded side edges 6 adjacent and cooperating further improving the connection between the concrete 3 and the sheets 1.
  • the air which is trapped below the horizontal parts 10 of the folded edges 6 cooperating during the pouring of the concrete can escape through the openings 13 in these parts.
  • the horizontal wall may include additional reinforcements.
  • a trellis 14 is placed on the sheets 1 to limit the shrinkage due to the drying of the concrete and to avoid cracking.
  • a reinforcing bar 15 can be placed in the ribs 5. This bar 15 is placed, before the concrete is poured, on the horizontal part 10 of the two edges 6 fitting into the rib. This placement is facilitated by the slight hollow formed by this part 10. Possibly reinforcements can be placed in the bottom of hollow ribs 5.
  • Continuity bars 16 can be placed on the trellis 14 where the bending moment in the horizontal wall requires it. These continuity bars 16 are parallel to the ribs 5. To increase the resistance to shear and to shearing forces, connecting reinforcements 17 can be provided in at least part of the ribs 5. These reinforcements 17 are constituted by bars having two ends folded.
  • One folded end rests on a lattice bar 14, while the other end passes through openings 12 located opposite one another, thus hooking the frame 17 to the folded edges 6 cooperating protruding inside the rib 5.
  • the sheets 1 which are easily stacked, are placed one beside the other in the manner described above, with their folded edges 6 fitting together.
  • the sheets 1 rest at their ends on supports, for example walls. If necessary, one or more props support the sheets between these ends. Due to the shape of the sheets and in particular to their folded edges 6 cooperants, a solid permanent formwork is obtained.
  • conventional formwork elements or adapted profiled sheets are used to retain the concrete 3 during pouring, which takes place after the reinforcement 14 to 17 has been laid.
  • the mixed horizontal wall described above has excellent mechanical qualities: great stability, good resistance to bending, good resistance to shearing force. Large spans are possible with a limited number of props. Due to the protection of part of the sheets 1 by concrete 3, very good fire resistance is obtained, which can be further improved by installing continuity bars 16. The quantity of concrete required is minimal.
  • the openings in the upwardly extending portions of the folded edges need not be round and located in a line. They can be staggered and be oblong.
  • the openings in two cooperating folded edges do not necessarily have to be located completely opposite one another. They can cover themselves partially or even not at all, but in these cases these openings can no longer be used for hooking the connecting frames to the folded edges.
  • Reinforcement is not always necessary. Their presence and their section depend on the stresses to which the wall is subjected.
  • the depth of the hollow ribs, the thickness of the concrete slab and the thickness of the sheets can be chosen according to the stresses and their finish, for example painting or galvanizing, can be chosen according to the type of application.
  • the flat central part of the sheets and / or the flaps on the two sides limiting a rib need not be smooth as shown in the figures but this part and / or these flaps can be provided with bosses.
  • the wall need not be a horizontal wall.
  • Vertical walls can be made in the same way with the walls described above, in which case these walls can be laid on two sides or on one side of the concrete. In the latter case, conventional formwork elements can be used.

Abstract

Composite wall, comprising formwork made up at least partially of prefabricated profiled metal sheets (1) laid with their lateral edges (6) against each other and forming together, at regular distances, hollow ribs (5) which are parallel to the lateral edges (6), and a concrete slab (3) cast in this formwork (1), characterised in that each metal sheet (1) ends on the side of an adjacent metal sheet (1), with approximately one half of a hollow rib (5), such a rib (5) thus being formed between two adjacent metal sheets (1), the adjacent lateral edges (6) of these metal sheets (1) being folded so as to comprise, over approximately their whole length, an edge part (9) extending towards the inside of the rib (5) over a distance which is substantially less than the depth of the rib (5), this edge part (9) being provided with openings (12) into which concrete (3) has penetrated, these adjacent edge parts (9) covering each other. <IMAGE>

Description

L'invention concerne une paroi mixte, comprenant un coffrage composé au moins partiellement de tôles métalliques profilées préfabriquées posées avec leurs bords latéraux l'une contre l'autre et formant ensemble, à des distances régulières, des nervures creuses qui sont parallèles aux bords latéraux, et une dalle de béton coulée dans ce coffrage.The invention relates to a mixed wall, comprising a formwork made up at least partially of prefabricated profiled metal sheets placed with their lateral edges one against the other and forming together, at regular distances, hollow ribs which are parallel to the lateral edges. , and a concrete slab poured into this formwork.

Des parois de ce genre sont souvent préférées à des parois formées par des hourdis en béton en raison de leur légèreté, leur facilité de réalisation et leurs qualités mécaniques avec un minimum de béton. Les tôles en métal, normallement en acier, forment une partie permanente du coffrage , sont combinées structurellement avec le béton durci et remplacent en partie et parfois totalement les armatures de traction de la paroi.Walls of this kind are often preferred to walls formed by concrete slabs because of their lightness, their ease of realization and their mechanical qualities with a minimum of concrete. The metal sheets, normally steel, form a permanent part of the formwork, are structurally combined with hardened concrete and partially and sometimes completely replace the tensile reinforcement of the wall.

Le problème dans ces parois mixtes est d'obtenir une excellente solidarisation entre les tôles et le béton. La simple adhérence naturelle n'est pas suffisante. Il est déjà connu de prévoir à cet effet des bossages dans les parties latérales des nervures de tôles trapézoïdales. Malgré les bossages, la solidarisation n'est pas parfaite et la résistance au feu est limitée.The problem in these mixed walls is to obtain an excellent connection between the sheets and the concrete. Simple natural adhesion is not enough. It is already known to provide bosses for this purpose in the lateral parts of the ribs of trapezoidal sheets. Despite the bosses, the connection is not perfect and the fire resistance is limited.

L'invention a pour but de remédier à ces inconvénients et de procurer une paroi mixte ayant des qualités mécaniques excellentes dues à une solidarisation excellente des tôles au béton et possédant une résistance au feu remarquable.The object of the invention is to remedy these drawbacks and to provide a mixed wall having excellent mechanical qualities due to an excellent joining of the sheets to the concrete and having a remarkable fire resistance.

Dans ce but, chaque tôle se termine du côté d'une tôle adjacente par à peu près la moitié d'une nervure creuse, une telle nervure étant donc formée entre deux tôles adjacentes, les bords latéraux adjacents de ces tôles étant pliés de manière à comprendre sur à peu près toute leur longueur une partie de bord s'étendant vers l'intérieur de la nervure sur une distance sensiblement inférieure à la profondeur de la nervure, cette partie de bord étant pourvue d'ouvertures dans lesquelles du béton s'est introduit, ces parties de bords adjacents se couvrant mutuellement.For this purpose, each sheet ends on the side of an adjacent sheet by approximately half of a hollow rib, such a rib therefore being formed between two adjacent sheets, the adjacent lateral edges of these sheets being folded so as to comprising over almost their entire length an edge portion extending towards the inside of the rib over a distance substantially less than the depth of the rib, this edge portion being provided with openings in which concrete has introduced, these adjacent edge portions covering each other.

Le béton qui s'est introduit dans les ouvertures assure une excellente liaison de la tôle au béton.The concrete that has entered the openings provides an excellent bond between the sheet and the concrete.

Dans une forme de réalisation particulière de l'invention, les ouvertures dans les parties de bord adjacentes de deux tôles adjacentes sont situées les unes au moins partiellement en face des autres, du béton traversant de part et d'autre des ouvertures dans les deux parties de bord.In a particular embodiment of the invention, the openings in the adjacent edge parts of two adjacent sheets are located at least partially opposite one another, concrete passing through on either side of the openings in the two parts of edge.

Dans cette forme de réalisation, le béton forme en quelque sorte des rivets à travers des ouvertures, améliorant encore la liaison tôle-béton.In this embodiment, the concrete somehow forms rivets through openings, further improving the sheet-concrete connection.

Dans une forme de réalisation efficace de l'invention, les bords latéraux sont pliés de manière à comprendre deux parties de bord, une partie s'étendant vers l'intérieur et une partie faisant un angle avec la précédente, les parties faisant un angle de deux bords latéraux adjacents étant situées du même côté par rapport aux parties s'étendant vers l'intérieur et se recouvrant mutuellement.In an effective embodiment of the invention, the side edges are folded so as to comprise two edge parts, one part extending inwards and one part making an angle with the previous one, the parts making an angle of two adjacent side edges being located on the same side with respect to the inwardly extending and overlapping portions.

Ces bords pliés assurent l'étanchéité entre les tôles et forment des crochets retenant encore mieux la tôle par rapport au béton.These folded edges seal between the sheets and form hooks that hold the sheet even better relative to the concrete.

De préférence ces parties s'étendant sous un angle sont également pourvues d'ouvertures les unes situées au moins partiellement en face des autres.Preferably these parts extending at an angle are also provided with openings one located at least partially opposite the other.

Dans cette forme de réalisation, l'air emprisonné en dessous de ces parties s'étendant sous un angle, c'est-à-dire en pratique parallèlement au plan de la paroi, lors du coulage du béton peut s'échapper à travers ces ouvertures.In this embodiment, the air trapped below these parts extending at an angle, that is to say in practice parallel to the plane of the wall, during the pouring of the concrete can escape through these openings.

La paroi mixte peut éventuellement comprendre des armatures supplémentaires comme par exemple une barre de renforcement au-dessus des bords pliées adjacents, un treillis posé sur les tôles métalliques, des barres de continuité posées sur le treillis ou une armature de liaison s'accrochant par une extrémité dans des ouvertures correspondantes des parties s'étendant vers l'intérieur des bords latéraux adjacents et reposant par son autre extrémité sur le treillis.The mixed wall may optionally include additional reinforcements such as for example a reinforcing bar above the adjacent folded edges, a trellis placed on the metal sheets, continuity bars placed on the trellis or a connecting reinforcement hooked by a end in corresponding openings of the parts extending inwards from the adjacent lateral edges and resting at its other end on the trellis.

L'invention concerne également une tôle profilée manifestement destinée à la paroi mixte selon l'une ou l'autre des formes de réalisation précédentes.The invention also relates to a profiled sheet obviously intended for the mixed wall according to one or the other of the preceding embodiments.

L'invention concerne ainsi une tôle métallique profilée caractérisée en ce qu'elle possède deux bords latéraux formant à peu près la moitié d'une nervure creuse, ces bords latéraux étant pliés de manière à comprendre une partie de bord s'étendant vers l'intérieur de la nervure et pourvue d'ouvertures.The invention thus relates to a profiled metal sheet characterized in that it has two lateral edges forming approximately half of a hollow rib, these lateral edges being folded so as to comprise an edge part extending towards the inside of the rib and provided with openings.

Pour plus de clarté, un exemple de mise en oeuvre de l'invention est décrit ci-après à titre illustratif et non restrictif, référence étant faite aux dessins annexés, dans lesquels :

  • La figure 1 montre en coupe transversale une partie d'une paroi mixte selon l'invention;
  • la figure 2 montre en coupe et à échelle agrandie la partie de la paroi mixte indiquée en F2 à la figure 1, mais sans le béton;
  • la figure 3 est une coupe selon la ligne III-III de la figure 1 à échelle agrandie.
For clarity, an example of implementation of the invention is described below by way of illustration and not restrictively, reference being made to the appended drawings, in which:
  • Figure 1 shows in cross section part of a mixed wall according to the invention;
  • Figure 2 shows in section and on an enlarged scale the part of the mixed wall indicated in F2 in Figure 1, but without the concrete;
  • Figure 3 is a section along line III-III of Figure 1 on an enlarged scale.

La paroi horizontale mixte representée aux figures comprend essentiellement un nombre de tôles profilées en acier 1 placées côte à côte avec leurs bords latéraux s'emboîtant, ces tôles formant une partie permanente et substantielle du coffrage et en même temps une armature inférieure, et une dalle de béton 3 durci, coulée sur place sur la face supérieure 2 des tôles 1.The mixed horizontal wall shown in the figures essentially comprises a number of profiled steel sheets 1 placed side by side with their lateral edges fitting together, these sheets forming a permanent and substantial part of the formwork and at the same time an armature lower, and a hardened concrete slab 3, poured on site on the upper face 2 of the sheets 1.

Les tôles 1 sont profilées de manière à former une partie centrale supérieure plate 4 et, de part et d'autre de cette partie, la moitié d'une nervure creuse 5 faisant saillie vers le bas à partir de la partie centrale 4, cette moitié se terminant par un bord plié 6.The sheets 1 are profiled so as to form a flat upper central part 4 and, on either side of this part, half of a hollow rib 5 projecting downward from the central part 4, this half ending with a folded edge 6.

Une nervure creuse 5 est par conséquent formée entre chaque paire de tôles 1 adjacentes. Cette nervure 5 possède une partie inférieure 7 légèrement évasée vers le haut et une partie supérieure 8 fortement évasée.A hollow rib 5 is therefore formed between each pair of adjacent sheets 1. This rib 5 has a lower part 7 slightly flared upwards and an upper part 8 strongly flared.

Les tôles 1 sont modulaires et ont une largeur de 60 cm ce qui est également la distance entre les centres de deux nervures 5 adjacentes. Les dimensions des nervures creuses 5 sont déterminées en fonction des exigences de résistance de la paroi, de la facilité de coulage du béton et de l'enrobage d'éventuelles armatures supplémentaires notamment en cas de résistance élevée au feu désirée.The sheets 1 are modular and have a width of 60 cm which is also the distance between the centers of two adjacent ribs 5. The dimensions of the hollow ribs 5 are determined as a function of the resistance requirements of the wall, of the ease of pouring the concrete and of the coating of any additional reinforcements, in particular in the case of desired high fire resistance.

Le bord latéral plié 6 de chaque moitié de nervure 5 par lequel une tôle 1 se termine, est plié comme représenté en détail à la figure 2, de manière à former sur toute sa longueur un crochet comprenant des parties 9, 10 et 11. La partie 9 s'étend vers l'intérieur de la nervure creuse 5 correspondante, sous un léger angle par rapport à la verticale et jusqu'à une distance sensiblement inférieure à la profondeur de la nervure creuse, par exemple sur une distance d'environ cinq cm. La partie 10 s'étend en direction horizontale à partir de l'extrémité supérieure de la partie 9 mais est légèrement courbée dans cette direction de manière à former un léger creux. La partie 11 ensuite forme un rebord faisant saillie vers le bas à l'extrémité de la partie 10 qui est éloignée de la partie 9.The folded lateral edge 6 of each rib half 5 by which a sheet 1 ends, is folded as shown in detail in FIG. 2, so as to form on any its length a hook comprising parts 9, 10 and 11. The part 9 extends towards the inside of the corresponding hollow rib 5, at a slight angle relative to the vertical and up to a distance substantially less than the depth of the hollow rib, for example over a distance of about five cm. Part 10 extends in a horizontal direction from the upper end of part 9 but is slightly curved in this direction so as to form a slight hollow. The part 11 then forms a rim projecting downwards at the end of the part 10 which is distant from the part 9.

Les parties horizontales 10 des deux bords pliés 6 d'une même tôle 1 sont situées du même côté par rapport aux parties 9 auxquelles elles sont connectées. Ce côté est d'ailleurs opposé au sens dans lequel les parties 9 correspondantes sont légèrement inclinées.The horizontal parts 10 of the two folded edges 6 of the same sheet 1 are located on the same side with respect to the parts 9 to which they are connected. This side is also opposite to the direction in which the corresponding parts 9 are slightly inclined.

Afin de permettre l'emboîtement des bords latéraux pliés 6 adjacents, un des bords 6 latéraux d'une même tôle 1 est légèrement plus grand que l'autre bord latéral plié 6 .In order to allow the adjacent folded side edges 6 to fit together, one of the side edges 6 of the same sheet 1 is slightly larger than the other folded side edge 6.

Les tôles 1 sont placées de manière à ce que le bord plié 6 le plus grand d'une tôle 1 est superposé au bord plié 6 le plus petit d'une tôle 1 adjacente. On obtient ainsi, avant le coulage du béton 3, une étanchéité parfaite et une connection solide entre les tôles 1.The sheets 1 are placed so that the largest folded edge 6 of a sheet 1 is superimposed on the edge folded 6 the smallest of an adjacent sheet 1. Before pouring the concrete 3, a perfect seal and a solid connection between the sheets 1 is thus obtained.

La partie s'étendant vers l'intérieur 9 de chaque bord plié 6 est pourvue tous les cinquante millimètres d'une ouverture ronde 12 ayant un diamètre de vingt à trente millimètres. La partie horizontale 10 de chaque bord plié 6 est également pourvue tous les cinquante millimètres d'une ouverture ronde 13 plus petite, c'est-à -dire ayant un diamètre d'environ 10 millimètres. Si les ouvertures 12 dans les parties 9 des deux bords pliés 6 adjacents et coopérants se trouvent, comme représenté aux figures, les unes complètement en face des autres, une efficacité maximale de la solidarisation est obtenue. Automatiquement les ouvertures 13 dans les parties 10 de ces bords coopérants se trouvent également complètement les unes en face des autres. Pour limiter la perte de résistance due à la perforation de la tôle, les ouvertures 12 et 13 peuvent être décalées d'un demi-espacement.The inwardly extending portion 9 of each folded edge 6 is provided every fifty millimeters with a round opening 12 having a diameter of twenty to thirty millimeters. The horizontal part 10 of each folded edge 6 is also provided every fifty millimeters with a smaller round opening 13, that is to say having a diameter of about 10 millimeters. If the openings 12 in the parts 9 of the two folded edges 6 adjacent and cooperating are, as shown in the figures, one completely opposite the other, maximum efficiency of the connection is obtained. Automatically the openings 13 in the parts 10 of these cooperating edges are also completely opposite one another. To limit the loss of resistance due to the perforation of the sheet, the openings 12 and 13 can be offset by half a spacing.

Du béton 3 traverse les ouvertures 12 susdites et forme en quelque sorte un rivet solidarisant les tôles 1 et le béton 3, la forme en crochet des bords latéraux pliés 6 adjacents et coopérants améliorant encore la connexion entre le béton 3 et les tôles 1. L'air qui est emprisonné en desous des parties horizontales 10 des bords pliés 6 coopérants lors du coulage du béton peut s'échapper au travers des ouvertures 13 dans ces parties.Concrete 3 crosses the aforementioned openings 12 and somehow forms a rivet joining the sheets 1 and the concrete 3, the hook shape of the folded side edges 6 adjacent and cooperating further improving the connection between the concrete 3 and the sheets 1. The air which is trapped below the horizontal parts 10 of the folded edges 6 cooperating during the pouring of the concrete can escape through the openings 13 in these parts.

Bien que les tôles 1 forment déjà une armature, la paroi horizontale peut comprendre des armatures supplémentaires. Ainsi un treillis 14 est posé sur les tôles 1 pour limiter le retrait dû au séchage du béton et pour éviter la fissuration. Si la stabilité l'exige, une barre de renforcement 15 peut être posée dans les nervures 5. Cette barre 15 est placeé, avant le coulage du béton, sur la partie 10 horizontale des deux bords 6 s'emboîtant dans la nervure. Ce placement est facilité par le léger creux formé par cette partie 10. Eventuellement des armatures peuvent être posées dans de fond de nervures creuses 5.Although the sheets 1 already form a reinforcement, the horizontal wall may include additional reinforcements. Thus a trellis 14 is placed on the sheets 1 to limit the shrinkage due to the drying of the concrete and to avoid cracking. If stability requires it, a reinforcing bar 15 can be placed in the ribs 5. This bar 15 is placed, before the concrete is poured, on the horizontal part 10 of the two edges 6 fitting into the rib. This placement is facilitated by the slight hollow formed by this part 10. Possibly reinforcements can be placed in the bottom of hollow ribs 5.

Sur le treillis 14 peuvent être posées des barres de continuité 16 aux endroits où le moment de flexion dans la paroi horizontale l'exige. Ces barres de continuité 16 sont parallèles aux nervures 5. Pour augmenter la résistance au cisaillement et aux efforts tranchants, des armatures de liaison 17 peuvent être prévues dans au moins une partie des nervures 5. Ces armatures 17 sont constituées par des barres ayant deux extrémités pliées.Continuity bars 16 can be placed on the trellis 14 where the bending moment in the horizontal wall requires it. These continuity bars 16 are parallel to the ribs 5. To increase the resistance to shear and to shearing forces, connecting reinforcements 17 can be provided in at least part of the ribs 5. These reinforcements 17 are constituted by bars having two ends folded.

Une extrémité pliée repose sur une barre du treillis 14, tandis que l'autre extrémité traverse des ouvertures 12 situées en face l'une de l'autre, accrochant ainsi l'armature 17 aux bords pliés 6 coopérants faisant saillie à l'intérieur de la nervure 5.One folded end rests on a lattice bar 14, while the other end passes through openings 12 located opposite one another, thus hooking the frame 17 to the folded edges 6 cooperating protruding inside the rib 5.

Pour former la paroi horizontale, les tôles 1, qui sont facilement empilées, sont posées l'une à côté de l'autre de la manière décrite ci-devant, avec leurs bords pliés 6 s'emboîtant. Les tôles 1 reposent par leurs extrémités sur des supports, par exemple des murs. Si nécessaire un ou plusieurs étançons supportent les tôles entre ces extrémités. Dû à la forme des tôles et en particulièr à leurs bords pliés 6 coopérants, un coffrage permanent solide est obtenu. Au limites de la paroi horizontale, des élements de coffrage classiques ou des tôles profilées adaptées sont utilisées pour retenir le béton 3 lors du coulage, qui a lieu après la pose des armatures 14 à 17.To form the horizontal wall, the sheets 1, which are easily stacked, are placed one beside the other in the manner described above, with their folded edges 6 fitting together. The sheets 1 rest at their ends on supports, for example walls. If necessary, one or more props support the sheets between these ends. Due to the shape of the sheets and in particular to their folded edges 6 cooperants, a solid permanent formwork is obtained. At the limits of the horizontal wall, conventional formwork elements or adapted profiled sheets are used to retain the concrete 3 during pouring, which takes place after the reinforcement 14 to 17 has been laid.

La paroi horizontale mixte décrite ci-devant possède des qualités mécaniques excellentes : une grande stabilité, une bonne resistance à la flexion, une bonne resistance à l'effort tranchant. De grandes portées sont possible avec un nombre limité d'étançons. Dû à la protection d'une partie des tôles 1 par le béton 3, une très bonne résistance au feu est obtenue, qui peut encore être améliorée par la pose de barres de continuité 16. La quantité de béton nécessaire est minimale.The mixed horizontal wall described above has excellent mechanical qualities: great stability, good resistance to bending, good resistance to shearing force. Large spans are possible with a limited number of props. Due to the protection of part of the sheets 1 by concrete 3, very good fire resistance is obtained, which can be further improved by installing continuity bars 16. The quantity of concrete required is minimal.

Il doit être entendu que l'invention n'est nullement limitée à la forme de réalisation décrite ci-devant et que bien des modifications peuvent y être apportées sans sortir du cadre de la demande de brevet.It should be understood that the invention is in no way limited to the embodiment described above and that many modifications can be made without departing from the scope of the patent application.

En particulier il n'est pas nécessaire que les ouvertures dans les parties s'étendant vers le haut des bords pliés soient rondes et situées sur une ligne. Elles peuvent être situées en quinconce et être oblongues. Les ouvertures dans deux bords pliés coopérants ne doivent pas nécessairement être situées complètement les unes en face des autres. Ils peuvent se couvrir partiellement ou même pas du tout, mais dans ces cas ces ouvertures ne peuvent plus servir à l'accrochage des armatures de liaison axu bords pliés.In particular, the openings in the upwardly extending portions of the folded edges need not be round and located in a line. They can be staggered and be oblong. The openings in two cooperating folded edges do not necessarily have to be located completely opposite one another. They can cover themselves partially or even not at all, but in these cases these openings can no longer be used for hooking the connecting frames to the folded edges.

Les armatures ne sont pas toujours nécessaires. Leur présence et leur section dépendent des solicitations auxquelles la paroi est soumise.Reinforcement is not always necessary. Their presence and their section depend on the stresses to which the wall is subjected.

Egalement la profondeur des nervures creuses, l'épaisseur de la dalle de béton et l'épaisseur des tôles peuvent être choisies en fonction des sollicitations et leur finition, par exemple peinture ou galvanisation, peut l'être en fonction du type d'application.Also the depth of the hollow ribs, the thickness of the concrete slab and the thickness of the sheets can be chosen according to the stresses and their finish, for example painting or galvanizing, can be chosen according to the type of application.

La partie centrale plate des tôles et/ou les pans des deux côtés limitant une nervure ne doivent pas nécessairement être lisses comme représenté aux figures mais cette partie et/ou ces pans peuvent être pourvus de bossages.The flat central part of the sheets and / or the flaps on the two sides limiting a rib need not be smooth as shown in the figures but this part and / or these flaps can be provided with bosses.

La paroi doit pas nécessairement être une paroi horizontale. Des parois verticales peuvent être réalisées de la même manière avec les parois décrites ci-devant, dans quel cas ces parois peuvent être posées des deux côtés ou d'un seul coté du béton. Dans ce dernier cas des éléments de coffrage classiques peuvent être utilisés.The wall need not be a horizontal wall. Vertical walls can be made in the same way with the walls described above, in which case these walls can be laid on two sides or on one side of the concrete. In the latter case, conventional formwork elements can be used.

Claims (16)

1.- Paroi mixte, comprenant un coffrage composé au moins partiellement de tôles métalliques profilées préfabriquées (1) posées avec leurs bords latéraux (6) l'une contre l'autre et formant ensemble, à des distances régulières, des nervures creuses (5) qui sont parallèles aux bords latéraux (6), et une dalle de béton (3) coulée dans ce coffrage (1), caractérisée en ce que chaque tôle (1) se termine du côté d'une tôle adjacente (1) par à peu près la moitié d'une nervure creuse (5), une telle nervure (5) étant donc formée entre deux tôles adjacentes (1), les bords latéraux adjacents (6) de ces tôles (1) étant pliés de manière à comprendre sur à peu près toute leur longueur une partie de bord (9) s'étendant vers l'intérieur de la nervure (5) sur une distance sensiblement inférieure à la profondeur de la nervure (5), cette partie de bord (9) étant pourvue d'ouvertures (12) dans lesquelles du béton (3) s'est introduit, ces parties (9) de bords adjacents se couvrant mutuellement. 1.- Mixed wall, comprising a formwork composed at least partially of prefabricated profiled metal sheets (1) placed with their lateral edges (6) one against the other and forming together, at regular distances, hollow ribs (5 ) which are parallel to the lateral edges (6), and a concrete slab (3) poured into this formwork (1), characterized in that each sheet (1) ends on the side of an adjacent sheet (1) by at about half of a hollow rib (5), such a rib (5) therefore being formed between two adjacent sheets (1), the adjacent lateral edges (6) of these sheets (1) being folded so as to include on almost their entire length an edge part (9) extending towards the inside of the rib (5) over a distance substantially less than the depth of the rib (5), this edge part (9) being provided openings (12) into which concrete (3) has been introduced, these parts (9) of adjacent edges ts covering each other. 2.- Paroi mixte selon la revendication précédente, caractérisée en ce que les ouvertures (12) dans les parties de bord (9) adjacentes de deux tôles adjacentes (1) sont situées les unes au moins partiellement en face des autres, du béton (3) traversant de part et d'autre des ouvertures (12) dans les deux parties de bord (9). 2.- mixed wall according to the preceding claim, characterized in that the openings (12) in the edge portions (9) adjacent to two adjacent sheets (1) are located at least partially opposite one another, concrete ( 3) crossing on either side of the openings (12) in the two edge parts (9). 3.- Paroi mixte selon l'une ou l'autre des revendications précédentes, caractérisée en ce que les ouvertures (12) sont rondes avec un diamètre de vingt à quarante millimètres. 3.- mixed wall according to either of the preceding claims, characterized in that the openings (12) are round with a diameter of twenty to forty millimeters. 4.- Paroi mixte selon l'une ou l'autre des revendications précédentes, caractérisée en ce que les bords latéraux (6) sont pliés de manière à comprendre deux parties de bord (9 et 10), une partie (9) s'étendant vers l'intérieur et une partie ( 10 ) faisant un angle avec la précédente, les parties faisant un angle (10) de deux bords latéraux adjacents (6) étant situées du même côté par rapport aux parties s'étendant vers l'intérieur et se recouvrant mutuellement. 4.- mixed wall according to either of the preceding claims, characterized in that the side edges (6) are folded so as to comprise two edge parts (9 and 10), one part (9) s' extending inwards and a part (10) making an angle with the previous one, the parts making an angle (10) of two adjacent lateral edges (6) being situated on the same side with respect to the parts extending inwards and overlapping each other. 5.- Paroi mixte selon la revendication précédente, caractérisée en ce que les parties s'étendant sous un angle (10) sont également pourvues d'ouvertures (13), les unes situées au moins partiellement en face des autres. 5.- mixed wall according to the preceding claim, characterized in that the parts extending at an angle (10) are also provided with openings (13), one located at least partially opposite the other. 6.- Paroi mixte selon l'une ou l'autre des revendications 4 et 5, caractérisée en ce que les bords pliés (6) d'une tôle (1) présentent une section transversale telle que les bords latéraux pliés adjacents (6) s'emboîtent. 6.- mixed wall according to either of claims 4 and 5, characterized in that the folded edges (6) of a sheet (1) have a cross section such that the adjacent folded side edges (6) fit together. 7.- Paroi mixte selon la revendication précédente, caractérisée en ce que les bords pliés (6) présentent une section transversale en forme de crochet et comprennent une partie (9) s'étendant vers l'intérieur, une partie (10) faisant un angle avec la partie précédente etjoignant l'extrémité supérieure de la partie précédente (9) et un rebord (11) s'étendant le long de la première partie (9) à partir de l'extrémité de la partie faisant un angle (10). 7.- mixed wall according to the preceding claim, characterized in that the folded edges (6) have a hook-shaped cross section and include a part (9) extending inwards, a part (10) forming a angle with the previous part and joining the upper end of the previous part (9) and a flange (11) extending along the first part (9) from the end of the corner part (10) . 8.- Paroi mixte selon l'une ou l'autre des revendications 4 à 7, caractérisée en ce que la partie transversale (10) d'un bord plié (9, 10, 11) présente un léger creux. 8.- mixed wall according to either of claims 4 to 7, characterized in that the transverse part (10) of a folded edge (9, 10, 11) has a slight hollow. 9.- Paroi mixte selon l'une ou l'autre des revendications 4 à 8, caractérisée en ce qu'elle comprend une barre de renforcement (15) au-dessus d'au moins un nombre de bords pliés (6) adjacents. 9.- mixed wall according to either of claims 4 to 8, characterized in that it includes a reinforcing bar (15) over at least a number of adjacent folded edges (6). 10.- Paroi mixte selon l'une ou l'autre des revendications précédentes, caractérisée en ce qu'elle comprend un treillis (14) au-dessus des tôles (1). 10.- mixed wall according to either of the preceding claims, characterized in that it comprises a trellis (14) above the sheets (1). 11.- Paroi mixte selon les revendications 2 et 10, caractérisée en ce qu'elle comprend des armatures de liaison (17) ayant une extrémité pliée traversant des ouvertures (12) dans une paire de bords pliés (6) adjacents et une autre extrémité pliée reposant sur le treillis (14). 11.- mixed wall according to claims 2 and 10, characterized in that it comprises connecting reinforcements (17) having a folded end passing through openings (12) in a pair of adjacent folded edges (6) and another end folded resting on the trellis (14). 12.- Paroi mixte selon l'une ou l'autre des revendications précédentes, caractérisé en ce que les nervures creuses (5) possèdent une partie inférieure (7) légèrement évasée et une partie supérieure (8) évasée plus fortement. 12.- mixed wall according to either of the preceding claims, characterized in that the hollow ribs (5) have a lower part (7) slightly flared and an upper part (8) flared more strongly. 13.- Tôle profilée manifestement destinée à la paroi mixte selon l'une ou l'autre des revendications précédentes. 13.- Profiled sheet obviously intended for the mixed wall according to either of the preceding claims. 14.- Tôle métallique profilée selon la revendication précédente, caractérisée en ce qu'elle possède deux bords latéraux formant à peu près la moitié d'une nervure creuse (5), ces bords latéraux étant pliés de manière à comprendre une partie de bord ( 9 ) s'étendant vers l'intérieur de la nervure et pourvue d'ouvertures (12). 14.- profiled metal sheet according to the preceding claim, characterized in that it has two lateral edges forming approximately half of a hollow rib (5), these lateral edges being folded so as to include an edge part (9) extending towards the interior of the rib and provided with openings (12 ). 15.- Tôle métallique selon la revendication précédente, caractérisée en ce que les bords latéraux pliés (6) comprennent également une partie (10) s'étendant sous un angle à partir de la partie (9) s'étendant vers l'intérieur, cette partie s'étendant sous un angle (10) étant également pourvue d'ouvertures (13), les parties s'étendant sous un angle (10) des deux bords latéraux étant situées du même côté des parties s'étendant vers l'intérieur (9). 15. Metal sheet according to the preceding claim, characterized in that the folded lateral edges (6) also comprise a part (10) extending at an angle from the part (9) extending inwards, this part extending at an angle (10) also being provided with openings (13), the parts extending at an angle (10) of the two lateral edges being situated on the same side of the parts extending inwards (9). 16.- Tôle métallique selon l'une ou l'autre des revendications 14 et 15, caractérisée en ce qu'elle comprend une partie centrale (4) s'étendant dans le plan de la tôle et de chaque côté de cette partie au moins deux pans faisant un angle entre eux et limitant la moitié de nervure creuse (5) correspondante. 16.- metal sheet according to either of claims 14 and 15, characterized in that it comprises a central part (4) extending in the plane of the sheet and on each side of this part at least. two sides making an angle between them and limiting the half of the corresponding hollow rib (5).
EP92870148A 1991-09-19 1992-09-15 Mixed construction wall and profiled sheet metal for such a wall Withdrawn EP0533647A1 (en)

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BE9100874 1991-09-19
BE9100874A BE1005389A3 (en) 1991-09-19 1991-09-19 Wall and mixed profiled sheet for such a wall.

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE29501807U1 (en) * 1995-02-04 1996-05-30 Dyckerhoff & Widmann Ag Self-supporting reinforcement element designed as lost formwork for a steel-concrete composite component

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Publication number Priority date Publication date Assignee Title
US2233291A (en) * 1939-10-14 1941-02-25 Leebov Nathan Building structure
FR57952E (en) * 1948-01-22 1953-09-18 New floor construction process
FR1249543A (en) * 1959-11-20 1960-12-30 Fond S Batiments & Travaux Pub Formwork for reinforced concrete floors
FR1409369A (en) * 1964-07-15 1965-08-27 Acieroid Improvements made to metal floor reinforcements
FR90968E (en) * 1966-05-25 1968-03-22 Union De Travaux Et D Entpr S Formwork for reinforced concrete floors
FR1568010A (en) * 1968-01-02 1969-05-23
FR2080643A3 (en) * 1970-02-20 1971-11-19 Guigoz Andre
FR2105440A5 (en) * 1970-09-07 1972-04-28 Reimbert Andre
FR2333107A1 (en) * 1975-11-28 1977-06-24 Le Clercq Pierre Metal shuttering of adjacent sheet sections - has toothed edges on webs formed by folding sheet parts
EP0345620A2 (en) * 1988-06-07 1989-12-13 Hans-Peter Dr.-Ing. Andrä Concrete beam with t-beam form

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2233291A (en) * 1939-10-14 1941-02-25 Leebov Nathan Building structure
FR57952E (en) * 1948-01-22 1953-09-18 New floor construction process
FR1249543A (en) * 1959-11-20 1960-12-30 Fond S Batiments & Travaux Pub Formwork for reinforced concrete floors
FR1409369A (en) * 1964-07-15 1965-08-27 Acieroid Improvements made to metal floor reinforcements
FR90968E (en) * 1966-05-25 1968-03-22 Union De Travaux Et D Entpr S Formwork for reinforced concrete floors
FR1568010A (en) * 1968-01-02 1969-05-23
FR2080643A3 (en) * 1970-02-20 1971-11-19 Guigoz Andre
FR2105440A5 (en) * 1970-09-07 1972-04-28 Reimbert Andre
FR2333107A1 (en) * 1975-11-28 1977-06-24 Le Clercq Pierre Metal shuttering of adjacent sheet sections - has toothed edges on webs formed by folding sheet parts
EP0345620A2 (en) * 1988-06-07 1989-12-13 Hans-Peter Dr.-Ing. Andrä Concrete beam with t-beam form

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE29501807U1 (en) * 1995-02-04 1996-05-30 Dyckerhoff & Widmann Ag Self-supporting reinforcement element designed as lost formwork for a steel-concrete composite component

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