EP1852559B1 - Covering chaining device - Google Patents

Abstract

The device has steel formwork modules cooperating with elements, which include a slab for intimately connecting between the slab and bearing walls or building foundations. The modules formed in a c-shaped thin sheet provide traversing passages (4-6) for a concrete during pouring of the concrete and for retention zones (7). The modules include a c-shaped lower branch (8) fixed on the walls or foundations. The lower branch provides ohm-shaped transversal section, where ends of the section are supported on the walls or foundations and middle section form the retention zone of the poured concrete.

Description

The present invention relates to the field of the building, in particular industrial buildings or housing with a metal structure and relates to a formwork chaining device for the realization of slabs of buildings.

NL 1016656 C2 shows a forming chaining device according to the preamble of claim 1.

Currently, chaining is achieved by the assembly of concrete modules laid on slabs of land or on blocks or a wall forming the crawl space or the basement of the dwelling in question. These modules must be fixed with mortar on said walls or blocks, which has the disadvantage that their positioning is neither easy to achieve nor accurate. In addition, these modules have predetermined dimensions, in particular in terms of length and section, so that they are not suitable for all types of homes.

Another disadvantage inherent in the use of the chaining described above is that the fixing of poles on said chaining for the production of vertical walls requires the provision of corresponding pins or fixing studs, arranged in a particularly precise manner. However, such a provision is very difficult to achieve with the existing means.

The present invention aims to overcome these disadvantages and in particular to provide a formwork chaining device easy to implement and having a quick assembly.

To this end, the subject of the invention is a formwork chaining device for producing slabs of buildings, constituted by steel formwork modules to collaborate with the constituent elements of the slab for an intimate connection between the slab and the walls. carriers or foundations of the building, said formwork modules being made in the form of thin sheets bent in C having through passages for the concrete during casting of the latter, and the retaining zones of the latter and the lower branch of said C form modules being intended to be fixed on the load-bearing walls or foundations, the interior space of the formwork modules in C, that is to say the space between the lower branch, the upper branch and the core of said C form modules, being intended to be filled by the concrete during casting of the latter, the upper branch of said C formwork modules being intended to be flush with the top surface of concrete after casting of the latter, characterized in that the lower branch of the C-shaped formwork modules has a Ω-shaped cross section whose ends are intended to rest on the bearing walls or foundations and whose middle part forms the zone retention of poured concrete.

By building, it is designated any type of housing such as individual houses or collective housing.

• la figure 1 est une vue partielle en perspective, à plus grande échelle, d'un dispositif de chaînage selon l'invention ;
• la figure 2 est une vue en perspective d'un module coffrant selon l'invention présentant une configuration rectiligne ;
• les figures 3A et 3B sont des vues en perspective de modules coffrants selon l'invention présentant une configuration angulaire ;
• les figures 4A et 4B sont des vues partielles en perspective d'un module coffrant selon l'invention de configuration angulaire et sur lequel sont montées respectivement des tiges de fixation et des tiges de fixation supportant un poteau présentant un profil en L,
• les figures 5A et 5B sont des vues partielles en perspective d'un module coffrant selon l'invention de configuration angulaire et sur lequel sont montées respectivement des tiges de fixation et des tiges de fixation supportant un poteau présentant un profil en I, et
• la figure 6 est une vue en perspective représentant l'assemblage de deux modules coffrants selon l'invention de configuration rectiligne avec un module coffrant de configuration angulaire par l'intermédiaire d'éclisses.

The invention will be better understood, thanks to the following description, which refers to a preferred embodiment, given by way of non-limiting example, and explained with reference to the attached schematic drawings, in which:

• the figure 1 is a partial perspective view, on a larger scale, of a chaining device according to the invention;
• the figure 2 is a perspective view of a form module according to the invention having a rectilinear configuration;
• the Figures 3A and 3B are perspective views of formwork modules according to the invention having an angular configuration;
• the Figures 4A and 4B are partial views in perspective of a formwork module according to the invention of angular configuration and on which are respectively mounted fixing rods and fixing rods supporting a post having an L-shaped profile,
• the Figures 5A and 5B are partial views in perspective of a formwork module according to the invention of angular configuration and on which are respectively mounted fixing rods and fixing rods supporting a pole having an I-profile, and
• the figure 6 is a perspective view showing the assembly of two formwork modules according to the invention of rectilinear configuration with a formwork module of angular configuration by means of fishplates.

The figure 1 annexed represents a formwork chaining device for the realization of slabs 2 of buildings. According to the invention, it consists of formwork modules 1, the steel collaborating with the constituent elements of the slab 2 for an intimate connection between the latter and the load-bearing walls 3 or foundations of the building.

The chaining device according to the invention can be integrated both in the wood frame structures, in traditional structures with blocks, as in concrete structures, steel, and the like.

The formwork modules 1, 1 'can be made in the form of thin C-folded sheets having through-passages 4, 5, 6 for the concrete during casting of the latter, as well as retaining zones 7 of the latter. These retaining zones 7 make it possible to intimately bond the slab 2, the load-bearing walls 3 or foundations of the building and the formwork modules 1, 1 '. Thus, the formwork modules 1, 1 'can be of relatively low weight, so that they are perfectly manageable by an operator alone.

According to the invention, the lower branch 8 of the formwork modules 1, 1 'C can be fixed on the load-bearing walls 3 or foundations, forming, for example, the crawl space or the basement of the house or the the building in question, the interior space 10 of the formwork modules 1, the C, that is to say the space between the lower branch 8, the upper branch 9 and the core 11 of said formwork modules 1, the C, being intended to be filled by the concrete during casting of the latter, the upper branch 9 of said formwork modules 1, the C flush with the upper surface of the concrete after pouring the latter. This internal space 10 is therefore always arranged facing the slab 2, which allows a fixing or intimate connection of the formwork modules 1, 1 'with said slab 2. This attachment is particularly favored through the through passages 4, 5, 6 made in the formwork modules 1, the for the concrete during the casting of the latter.

Before pouring the concrete, the formwork modules 1, 1 'according to the invention may be prefixed, for example by means of nails, to the load-bearing walls 3, so that said formwork modules 1, 1' remain in their position. when pouring concrete.

As shown on figures 2 , 3A and 3B annexed, the lower branch 8 of the formwork modules 1, the C can have a cross section in the form of Ω whose ends rest on the load-bearing walls 3 or foundations and whose middle portion forms the retention zone 7 of the concrete sank. In this way, during the pouring of the concrete, the latter fills the said holding zone 7 and forms, after hardening, an anchoring means linking the formant module 1.1 'the slab 2 and the bearing wall 3 or the foundations on which is mounted the formwork module 1,1 '.

In view of this fixation, and to allow the concrete to completely fill the inner space of each formwork module 1, 1 ', each retaining zone 7 of the poured concrete may have lights 4, 5, 6 forming through passages for poured concrete. The shape of these lights 4, 5 and 6 is indifferent.

For the production of a wall, the formwork modules 1,1 'may have at least one fastening means 12, 12' of a rod or fastening pin 13 carrying element 14 of the pole type, for example, as shown on the Figures 4B and 5B .

According to a first variant and as shown in the appended figures, this fixing means may be in the form of two bores 12 and 12 'made respectively on the lower branch 8 and the upper branch 9 of the formwork modules 1, 1', a first end 15 of the rod or fixing pin 13 being at right angles to the remainder of the body of said rod or pin 13 and having a pin 17 cooperating with the first bore 12, the other end 16 of said rod or pin fastening 13 being inserted into the second bore 12 '.

The lower branches 8 and 9 can have many holes 12 and 12 'to allow easy adaptation of the chaining according to the invention to all configurations. Thus, as shown on the Figures 4A, 4B , 5A, 5B , all the bores 12, 12 'may not be used and different bores 12, 12' are used depending on the type of carrier element 14 to be installed.

According to another variant, one, 15, of the ends of the rod or fixing pin 13 may be threaded and fixed on a form module 1, 1 'by means of a nut 18, in a bore 12 made on the lower branch 8 of said form module 1. Such an arrangement is shown on the Figures 4B and 5B .

The other end 16 of the rod or fixing pin 13 may be connected to a reinforcement 19 via a metal link 20, as shown in FIG. figure 1 .

Of course, in the case of the realization of a chaining using the formwork modules 1, 1 'according to the invention, it is quite possible to fix, on said formwork modules 1, 1', different types of fixing rods. 13 according to the two variants described above.

Advantageously, the holes 12 and 12 'forming fastening means also form through passages for cast concrete.

The holes 12 made in the upper branch 9 of the formwork modules 1, 1 'have the particular advantage of preventing detachment of the formwork module 1, 1' during the casting of the concrete, to facilitate filling the interior space 10 by acting as vents and making it possible to verify that the interior space 10 of the formwork module 1, 1 'is well filled. Indeed, when concrete flows through these holes 12, it can be considered that there is no longer any empty zone in said interior space 10 and that the intimate connection between the slab 2 and the formwork modules 1, 1 'according to the invention is ensured.

According to the invention, the formwork modules 1 and 1 'can be of rectilinear or angular constitution. In this way, the angular formwork modules can be arranged at an angle of the dwelling.

The rectilinear form modules 1, for their part, can be provided to be arranged on straight bearing walls and thus to make the connection between two angular formwork modules located at two opposite corners of a building.

It is therefore possible to provide batches of formwork modules 1, 1 'with different angles and thus adaptable to homes of different shapes.

Advantageously, and according to one characteristic of the invention, the formwork modules 1, 1 'are assembled together by means of fishplates 21.

For this purpose, each splint 21 may have a shape and through passages 5 'such that in the service position, it is disposed against the central part forming the retention zone 7 and the core 11 of two formwork modules 1, 1 adjacent to connect and such that the through passages 5 'of said splice 21 coincide with those 5 of said two formwork modules 1, the adjacent to connect.

The two fishplates 21 represented on the figure 6 have an L shape, so that a first leg of the L rests on a portion of the core 11 of the two formwork modules 1 and the adjacent to connect and that the second leg of the L rests on the plane middle part of the Ω forming the holding zone 7 of said formwork modules 1 and 1 '. The shape and arrangement of the through passages 5 'of the fishplates 21 corresponds, in the service position of the latter, with the shape and the arrangement of the through-passages 5' of the adjacent formwork modules 1, 1 '.

Fixing the fishplates 21 on the formwork modules 1, 1 'can be carried out conventionally, namely by bolts.

• disposer les modules coffrants 1, 1' angulaires et rectilignes sur les murs porteurs 3,
• mettre en place les éclisses 21 au niveau des joints entre les différents modules coffrants 1, 1' et les fixer,
• fixer, par exemple par l'intermédiaire de clous, les différents modules coffrants 1 sur les murs porteurs 3,
• éventuellement, assembler des dalles droites et dalles d'angle sur le côté extérieur des modules coffrants 1,
• mettre en place les tiges de fixation 13,
• poser le plancher, à savoir les poutrelles, hourdis, chapeaux, acier de refend central, treillis, etc....,
• faire couler le béton tout en le tassant afin qu'il ressorte par les perçages 12 formant passages traversants pour le béton coulé, et
• retirer et nettoyer l'excédent de béton.

The implementation of a chaining according to the invention can thus be performed mainly according to the following steps:

• arrange the formwork modules 1, 1 'angular and rectilinear on the load-bearing walls 3,
• put in place the fishplates 21 at the joints between the various formwork modules 1, 1 'and fix them,
• fix, for example by means of nails, the various formwork modules 1 on the load-bearing walls 3,
• possibly, to assemble straight slabs and corner slabs on the outer side of the formwork modules 1,
• put in place the fixing rods 13,
• laying the floor, namely beams, slabs, hats, central split steel, trellis, etc.,
• pouring the concrete while compacting it so that it comes out through the holes 12 forming through-passages for poured concrete, and
• remove and clean the excess concrete.

Thanks to the Ω-shaped cross section of the lower branch 8 of the formwork modules 1, 1 'C according to the invention, the stability and cohesion of the structure constituted by the slab 2 and the load-bearing walls 3 or foundations of the building are improved. Indeed, the Ω shape of the lower branch 8 allows to intimately bond the slab to the carrier walls 3 or foundations by forming a retaining zone 7 of the cast concrete.

Of course, the invention is not limited to the embodiment described and shown in the accompanying drawings. Modifications are possible, particularly from the point of view of the constitution of the various elements or by substitution of technical equivalents, without departing from the scope of the invention as defined by the claims.

Claims (11)

1. Framing chaining device for the formation of floor slabs of buildings formed by framing modules (1, 1') made of steel for cooperating with the constituent elements of the floor slab for an intimate connection between the latter and the supporting walls (3) or foundations of the building, said framing modules (1, 1') being in the form of thin sheet metal folded into a C shape with traversing passages (4, 5, 6) for the concrete during the pouring of the latter, as well as retaining zones (7) for the latter and the lower side (8) of said framing modules (1, 1') in a C shape designed to be fixed to the supporting walls (3) or foundations, the interior space (10) of the framing modules (1, 1') in a C shape, that is the space between the lower side (8), the upper side (9) and the core (11) of said framing modules (1, 1') in a C shape, being designed to be filled with the concrete during the pouring of the latter, the upper side (9) of the said framing modules (1, 1') in a C shape being designed to be flush with the upper surface of the concrete after the pouring of the latter, characterised in that the lower side (8) of the framing modules (1, 1') in a C shape has a transverse cross section in an Ω shape, the ends of which are designed to bear against the supporting walls (3) or foundations and the medial part of which forms the retaining zone (7) of the poured concrete.
2. Device according to claim 1, characterised in that each retaining zone (7) of poured concrete comprises openings (4, 5, 6) forming traversing passages for the poured concrete.
3. Device according to either of claims 1 and 2, characterised in that the framing modules (1, 1') comprise at least one securing means (12, 12'), a securing rod or pin (13) of a supporting element (14).
4. Device according to claim 3, characterised in that the securing means is in the form of two openings (12 and 12') formed respectively on the lower side (8) and the upper side (9) of the framing modules (1, 1'), in that the device comprises a rod, and in that a first end (15) of the securing rod or pin (13) is at right angles in relation to the rest of the body of the said securing rod or clip (13) and comprises a lug (17) which cooperates with the first opening (12), and in that the other end (16) of the said securing rod or pin (13) is inserted into the second opening (12').
5. Device according to any one of claims 3 and 4, characterised in that one (15) of the ends of the securing rod or clip (13) is threaded and secured onto a framing module (1, 1') by means of a screw (18) in an opening (12) formed on the lower side (8) of said framing module (1).
6. Device according to claim 5, characterised in that the other end (16) of the securing rod or pin (13) is connected to a reinforcement (19) by means of a metallic link (20).
7. Device according to any one of claims 4 to 6, characterised in that the openings (12 and 12') forming the securing means also form the traversing passages for the poured concrete.
8. Device according to any one of claims 1 to 7, characterised in that the framing modules (1) are rectangular in their configuration.
9. Device according to any one of claims 1 to 8, characterised in that the framing modules (1') are angular in their configuration.
10. Device according to any one of claims 1 to 9, characterised in that the framing modules (1, 1') are assembled together by means of joint bars (21).
11. Device according to claims 2, 4 and 10, characterised in that each joint bar (21) has a shape and traversing passages (5') such that in a position of service it is arranged against the medial part forming the retaining zone (7) and the core (11) of two adjacent framing modules (1, 1') to be connected and such that the traversing passages (5') of said joint bar (21) coincide with those (5) of said two adjacent framing modules (1, 1') to be connected.

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