FR2840932A1 - Hollow pugging is composed of two plastics profiles with inner curvatures, clipped together, containing reinforcement bulkheads and fitted with lower fasteners and/or anchors - Google Patents
Hollow pugging is composed of two plastics profiles with inner curvatures, clipped together, containing reinforcement bulkheads and fitted with lower fasteners and/or anchors Download PDFInfo
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- FR2840932A1 FR2840932A1 FR0207229A FR0207229A FR2840932A1 FR 2840932 A1 FR2840932 A1 FR 2840932A1 FR 0207229 A FR0207229 A FR 0207229A FR 0207229 A FR0207229 A FR 0207229A FR 2840932 A1 FR2840932 A1 FR 2840932A1
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- profiles
- hourdis
- slab
- slabs
- hollow
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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
- E04B5/17—Floor structures partly formed in situ
- E04B5/23—Floor structures partly formed in situ with stiffening ribs or other beam-like formations wholly or partly prefabricated
- E04B5/26—Floor structures partly formed in situ with stiffening ribs or other beam-like formations wholly or partly prefabricated with filling members between the beams
Abstract
Description
Hourdis creux en matiere plastique La presente invention concerne unThe hollow hollow plastics material The present invention relates to a
hourdis creux en matiere plastique de hollow plastic slabs of
conception particuliere.particular design.
Les hourdis - ou elements de remplissage en forme de panneaux destines a eke supportes par des poutres de soutien de maniere a former la structure de base The slabs - or filling elements in the form of panels intended for eke supported by support beams so as to form the basic structure
d'un plancher - etaient jadis realises en terre cuite, beton ou ceramique. of a floor - were formerly made of terracotta, concrete or ceramic.
Toutefois, de tels hourdis vent lourds, fragiles et menent a des difficultes de manipulation et de transport ainsi qu'a des surcharges au niveau de la conskuction. Pour remedier a ces defauts, et en ouke obtenir des skuctures a isolation thermique et acoustique ameliorees, on a de longue date songe a l'utilisation de matieres plastiques pour la fabrication de hourdis. Afin de resoudre le probleme des surcharges, on utilise en outre soit de la matiere plastique expansee, soit des However, such slabs are heavy, fragile and lead to difficulties in handling and transport as well as overloads in terms of construction. To remedy these faults, and in order to obtain skuctures with improved thermal and acoustic insulation, consideration has long been given to the use of plastics for the manufacture of slabs. In order to solve the problem of overloads, either expanded plastic or
profiles creux en matiere plastique. hollow plastic profiles.
Ainsi, il existe des hourdis en polystyrene (PS) expanse, mais leur prix est eleve et leur resistance mecanique est souvent insuffisante pour retenir de maniere fiable des organes de fixation (tels que ceux qui vent souvent utilises pour le revetement inferieur). Par ailleurs, le PS n'est pas par nature un materiau autoextinguible et il ne constitue de ce fait pas un materiau de choix du point de vue de la resistance au feu. A noter en ouke que la fabrication de hourdis en PS genere une quantite importante de dechets puisqu'on part de blocs massifs que Thus, there are slabs of expanded polystyrene (PS), but their price is high and their mechanical strength is often insufficient to reliably retain fasteners (such as those often used for the lower coating). Furthermore, PS is not by nature a self-extinguishing material and therefore does not constitute a material of choice from the point of view of fire resistance. Note in ouke that the manufacture of slabs in PS generates a significant amount of waste since we start from massive blocks that
l'on conforme par usinage.it conforms by machining.
Le brevet FR 2 043 897 divulgue quant a lui le principe de la fabrication de hourdis en matiere plastique sous forme de profiles creux. Ces profiles presentent l'avantage d'eke plus resistants que les profiles en PS expanse, et ils vent egalement plus faciles a recycler. Ils peuvent egalement etre rendus moins chers moyennant le choix d'une geomekie adequate. En ouke, leur procede de fabrication genere moins de dechets. Toutefois, compte tenu de l'epaisseur de paroi requise pour obtenir une resistance mecanique suffisante, ils vent generalement plus lourds que les profiles en PS expanse, meme lorsqutils vent pourvus de cloisons internee de renforcement. Ils vent egalement plus difficiles a realiser que les hourdis en PS expanses, notamment compte tenu de la presence The patent FR 2 043 897 discloses the principle of manufacturing plastic slabs in the form of hollow profiles. These profiles have the advantage of being more resistant than expanded PS profiles, and they are also easier to recycle. They can also be made cheaper by choosing the right geomekie. In ouke, their manufacturing process generates less waste. However, given the wall thickness required to obtain sufficient mechanical strength, they are generally heavier than expanded PS profiles, even when they are provided with internal reinforcing partitions. They are also more difficult to achieve than the slabs in expanded PS, especially given the presence
de ces cloisons.of these partitions.
- 2 L'invention a des lors pour but de fournir des hourdis creux en matiere plastique qui vent a la fois resistants, legers et faciles a realiser. Ils presentent egalement l'avantage d'etre facile a manipuler et a placer et permettent en outre - 2 The invention therefore aims to provide hollow plastic slabs which are both resistant, light and easy to make. They also have the advantage of being easy to handle and place and also allow
un placement aise de conduits ou de cables en leur sein. easy placement of conduits or cables within them.
A cet effet, ['invention concerne un hourdis creux en matiere plastique To this end, the invention relates to a hollow plastic slab
comprenant au moins deux profiles assembles. comprising at least two profiles assembled.
Par "hourdis" selon la presente invention, on entend designer un corps creux destine a etre supporte par deux de ses bords opposes sur des poukes de soutien pour constituer un element de plancher. En general, les hourdis vent inseres par dessous entre lesdites poutres, qui vent munies de rainures et/ou de parties en saillies appropriees pour le support des hourdis. On vient ensuite By "slabs" according to the present invention is meant to designate a hollow body intended to be supported by two of its opposite edges on support legs to form a floor element. In general, the slabs are inserted from below between said beams, which are provided with grooves and / or projecting parts suitable for supporting slabs. We come next
couler du beton et/ou apposer un revetement de sol approprie par dessus tout. pour concrete and / or apply an appropriate floor covering above all.
Generalement, la face inferieure des hourdis est egalement pourvue d'un revetement qui peut etre constitue de beton, platre, panneaux en bois ou en matiere plastique. Les hourdis ont generalement une forme externe standard et/ou des dimensions externes (dans deux directions de l'espace au moins, la longueur pouvant etre variable) normalisees de maniere a pouvoir etre apposes entre les poutres de soutien (egalement de forme et de dimensions standard, et Generally, the underside of the slabs is also provided with a covering which can be made of concrete, plaster, wooden or plastic panels. The slabs generally have a standard external shape and / or external dimensions (in at least two directions of space, the length being variable) normalized so that they can be affixed between the support beams (also in shape and dimensions standard, and
disposees a intervalles predetermines). arranged at predetermined intervals).
Selon la presente invention, ces hourdis comprennent au moins deux profiles qui vent assembles. De preference, ils vent essentiellement constitues de deux profiles assembles. Le mode d'assemblage peut etre de tout type; il peut etre mecanique (rivetage, boulonnage, emboitement, clippage...) ou thermique (soudage). De preference, il s'agit d'un simple clippage c.a.d. qu'au moins un des profiles est momentanement legerement deforme (au moins localement) afin d'y According to the present invention, these slabs comprise at least two profiles which are assembled together. Preferably, they are essentially made up of two assembled profiles. The assembly method can be of any type; it can be mechanical (riveting, bolting, interlocking, clipping ...) or thermal (welding). Preferably, it is a simple clipping i.e. that at least one of the profiles is momentarily slightly deformed (at least locally) in order to
embo^lter l'autre profile.embo ^ lter the other profile.
La matiere plastique constitutive du hourdis selon la presente invention est de preference une matiere thermoplastique ou un melange de matieres thermoplastiques, c. a. d. que l'on peut mettre en forme par fusion. De maniere plus particulierement preferee, la matiere plastique est une matiere thermoplastique et les profiles vent obtenus par extrusion a travers une filiere, generalement a l'etat fondu. Les profiles vent alors constitues de parois paralleles a la direction d' extrusion. Un avantage d' avoir un hourdis constitue de deux profiles extrudes separement reside dans le fait d'avoir reduit de moitie les nervures a calibrer et done, d'obtenir aisement, et avec un debit de production eleve, des hourdis de geometric optimale. Apres ltextrusion, les profiles vent - 3 debites en des sections de longueur appropriee pour le transport, la manipulation et la pose. Le fait d'en avoir reduit au maximum le poids par unite de longueur (par une optimisation de la geometric) permet egalement de pouvoir manipuler The plastic material constituting the slab according to the present invention is preferably a thermoplastic material or a mixture of thermoplastic materials, c. at. d. that can be shaped by fusion. More particularly preferably, the plastic is a thermoplastic and the wind profiles obtained by extrusion through a die, generally in the molten state. The profiles then consist of walls parallel to the direction of extrusion. An advantage of having a slab consisting of two extruded profiles separately lies in the fact of having halved the ribs to be calibrated and therefore, to obtain easily, and with a high production rate, slabs of optimal geometric. After extrusion, the profiles wind - 3 flows into sections of suitable length for transport, handling and installation. The fact of having reduced its weight as much as possible per unit of length (by optimizing the geometric) also allows us to be able to handle
des segments plus longs et done, de faciliter la pose. longer segments and done, to facilitate the installation.
La matiere thermoplastique mentionnee ci-dessus est de preference un homo - ou c op o lymere de chlorure de vinyl e (g eneralement qualifi e de res ine The thermoplastic material mentioned above is preferably a homo - or c op o lymer of vinyl chloride e (generally qualified as res ine
PVC), d'ethylene et/ou de propylene (generalement qualifies de polyolefines). PVC), ethylene and / or propylene (generally referred to as polyolefins).
Les resines PVC offrent un excellent compromis prix/proprietes et beneficient en outre de l'avantage de la resistance au feu par rapport aux polyolefines. Par consequent, la matiere plastique utilisee dans la presente invention comprend de PVC resins offer an excellent price / property compromise and also benefit from the advantage of fire resistance compared to polyolefins. Therefore, the plastic material used in the present invention includes
preference une resine PVC.preferably a PVC resin.
La matiere plastique constitutive du hourdis selon la presente invention peut etre utilisee telle queue, mais elle contient toutefois generalement des additifs tels que des stabilisants, lubrifiants, pigments, charges... permettant d'en reduire le cout et/ou d'en ameliorer les proprietes et/ou l'ouvrabilite. A titre de "charges", on citera aussi bien les fibres (de verre, de carbone...) que les charges particulaires telles que le carbonate de calcium, le talc, le mica... Le carbonate de calcium est une charge qui convient particulierement bien, en particulier pour les resines PVC, dans lesquelles il est generalement incorpore a raison de 20% au moins, voire 30% au moins, mais souvent a raison de 60% au plus, voire 40% au plus. La matiere plastique constitutive du hourdis selon la presente invention peut etre une resine "vierge" (c.a.d. qui nta jamais subi de mise en ocuvre par fusion, excepte eventuellement une simple granulation) ou une resine recyclee The plastic material constituting the slab according to the present invention can be used such a tail, but it however generally contains additives such as stabilizers, lubricants, pigments, fillers ... making it possible to reduce the cost and / or improve it properties and / or workability. By way of "fillers", mention will be made of fibers (glass, carbon, etc.) as well as particulate fillers such as calcium carbonate, talc, mica, etc. Calcium carbonate is a filler which is particularly suitable, in particular for PVC resins, in which it is generally incorporated at a rate of at least 20%, or even 30% at least, but often at a rate of 60% at most, or even 40% at most. The plastic material constituting the slab according to the present invention can be a "virgin" resin (ie which has never undergone processing by fusion, except possibly a simple granulation) or a recycled resin
(qui a deja subi une telle mise en oeuvre), voire un melange des deux. (which has already undergone such an implementation), or even a mixture of the two.
Avantageusement, la matiere plastique utilisee pour le hourdis selon la presente comprend soit des dechets de polymerisation (correspondent done malgre tout a de la resine cite "vierge"), soit de la resine recyclee (sous forme de scraps de fabrication ou de morceaux d'objets en matiere plastique usages tels que des Advantageously, the plastic material used for the slab according to the present comprises either polymerization waste (therefore nevertheless corresponds to "virgin" resin), or recycled resin (in the form of manufacturing scraps or pieces of plastic objects used such as
profiles par exemple), eventuellement meme des resines de couleurs differentes. profiles for example), possibly even resins of different colors.
En effet, les hourdis etant souvent destines a etre occlus dans le plancher, Indeed, the slabs are often intended to be occluded in the floor,
l'homogeneite de coloris est generalement accessoire. color consistency is generally incidental.
Enfin, les deux profiles compris dans le hourdis selon la presente invention ne doivent pas necessairement etre a base de la meme matiere plastique, quoique 3i cela soit generalement le cast - 4 Par "profile", on entend ici designer un corps creux de section constante et de forme determinee, qui comprend une paroi (exterieure) constituee de faces et qui peut egalement comprendre des cloisons (interieures) de renforcement. On distingue les faces externes du profile (destinees a etre situees a l'exterieur du hourdis apres assemblage) des faces internee (destinees a etre situees a l'interieur du hourdis apres assemblage) Compte tenu de sa fonction (element de plancher), le hourdis selon la Finally, the two profiles included in the slab according to the present invention do not necessarily have to be based on the same plastic material, although 3i this is generally the cast - 4 By "profile", we mean here designating a hollow body of constant section and of specific shape, which includes a (exterior) wall made up of faces and which can also include (interior) reinforcing partitions. A distinction is made between the external faces of the profile (intended to be located outside the slab after assembly) from the internal faces (intended to be located inside the slab after assembly). Given its function (floor element), the slabs according to the
presente invention possede generalement au moins une face fonctionnelle (c.a.d. present invention generally has at least one functional face (i.e.
une des faces formant sa partie inferieure ou sa partie superieure apres assemblage) substantiellement plane. Par "substantiellement plane", on entend de forme generale effectivement plane ou legerement incurvee, c.a. d. que lorsqu'on effectue une coupe transversale dans le hourdis (perpendiculaire a ses parois), one of the faces forming its lower part or its upper part after assembly) substantially planar. By "substantially planar" is generally understood to be actually planar or slightly curved, ie d. that when we make a cross section in the slab (perpendicular to its walls),
cette face dessine un arc de cercle ayant un rayon de courbure superieur ou egal a. this face draws an arc having a radius of curvature greater than or equal to a.
fois la hauteur de la coupe (c.a.d. environ la hauteur du hourdis), voire superieur ou egal a 20 fois cette hauteur. En general, cette face est destinee a etre placee substantiellement parallelement au plancher. Habituellement, le hourdis selon la presente invention a ses deux faces fonctionnelles substantiellement planes. De maniere preferee, le hourdis selon la presente invention comprend une face fonctionnelle legerement incurvee qui est destinee a former sa partie inferieure apres assemblage. Dans ce cas, le rayon de courbure est choisi de times the height of the cut (i.e. approximately the height of the slab), or even greater than or equal to 20 times this height. In general, this face is intended to be placed substantially parallel to the floor. Usually, the slab according to the present invention has its two substantially planar functional faces. Preferably, the slab according to the present invention comprises a slightly curved functional face which is intended to form its lower part after assembly. In this case, the radius of curvature is chosen to
maniere a optimiser la resistance en flexion et au fluage du hourdis. to optimize the flexural and creep resistance of the slabs.
Habituellement, le hourdis comprend egalement au moins deux faces laterales, Usually, the slab also includes at least two side faces,
destinees a etre placees substantiellement perpendiculairement au plancher. intended to be placed substantially perpendicular to the floor.
Selon une variante avantageuse de la presente invention, au moins un des profiles comprend une face interne (destinee a etre situee a l'interieur du hourdis apres assemblage) courbe, c.a.d. presentant un rayon de courbure (visualise sur une coupe transversale dans le hourdis) inferieur a 10 fois la hauteur du hourdis, According to an advantageous variant of the present invention, at least one of the profiles comprises an internal face (intended to be located inside the slab after assembly) curved, ie having a radius of curvature (visualized on a cross section in the slab) less than 10 times the height of the slabs,
de preference inferieur a 5 fois cette hauteur. preferably less than 5 times this height.
Selon une variante particulierement avantageuse de la presente invention, les deux profiles du hourdis vent des corps creux tels que definis au paragraphe precedent et ils vent assembles de maniere a ce que leurs courbures forment des According to a particularly advantageous variant of the present invention, the two profiles of the slab wind hollow bodies as defined in the preceding paragraph and they wind together so that their curvatures form
domes convexes dans le plancher.convex domes in the floor.
De maniere preferee, au moins un des profiles du hourdis selon la presente invention comporte des cloisons de renforcement. La forme, la taille et la 3 5 disposition de ces cloisons vent de preference optimisees de maniere a obtenir un bon compromis entre le poids et les proprietes mecaniques desirees (notamment - 5 la resistance en flexion et la resistance au fluage). De preference, ces cloisons vent perpendiculaires au faces fonctionnelles du hourdis. Pour augmenter le rapport resistance mecanique / poids de la structure, il est particulierement Preferably, at least one of the profiles of the slab according to the present invention comprises reinforcing partitions. The shape, size and arrangement of these partitions is preferably optimized so as to obtain a good compromise between the weight and the desired mechanical properties (in particular - the flexural strength and the creep resistance). Preferably, these partitions wind perpendicular to the functional faces of the slab. To increase the mechanical resistance / weight ratio of the structure, it is particularly
avantageux que les deux profiles comprennent des cloisons de renforcement. advantageous that the two profiles include reinforcing partitions.
L'epaisseur de la paroi et des cloisons de renforcement eventuelles des profiles est preferablement identique et constante, ce qui en facilite la fabrication. Toutefois, il peut arriver que le hourdis comporte au moins un endroit de plus forte epaisseur, par exemple lorsqutau moins deux parois/cloisons se croisent et/ou vent en contact sur une longueur non negligeable. Dans ce cas, pour realiser un gain sur le poids de la structure tout en affectant peu ou pas sa resistance mecanique, il peut s'averer interessant de pratiquer des vices a cet endroit. Ceux-ci peuvent etre realises lors de la mise en forme des profiles (moyennarit une filiere d'extrusion adequate, par exemple), soit etre usines dans The thickness of the wall and of the possible reinforcement partitions of the profiles is preferably identical and constant, which facilitates its manufacture. However, it may happen that the slab has at least one place of greater thickness, for example when at least two walls / partitions cross and / or wind in contact over a non-negligible length. In this case, to achieve a gain on the weight of the structure while affecting little or no mechanical resistance, it may prove to be interesting to practice vices at this location. These can be carried out during the shaping of the profiles (for example an adequate extrusion die), or be manufactured in
les profiles. La premiere solution est preferee. the profiles. The first solution is preferred.
Les dimensions du hourdis selon la presente invention dependent des conditions pratiques deja evoquees (standards dans la profession, maniabilite etc...). En general, on recommande une epaisseur de paroi inferieure ou egale a 8 The dimensions of the slab according to the present invention depend on the practical conditions already mentioned (standards in the profession, workability, etc.). In general, we recommend a wall thickness less than or equal to 8
mm, voire a 5 mm, mais generalement superieure ou egale au mm, voire a 2 mm. mm, even to 5 mm, but generally greater than or equal to mm, even to 2 mm.
Les faces fonctionnelles vent generalement des rectangles ayant leur cOte le plus long destine a etre place perpendiculairement aux poutres de soutien et mesurant au moins 40 cm, voire au moins 50 cm, mais generalement pas plus de 80 cm, voire de 70 cm. Leur cote le plus court ne mesure generalement pas plus de 30 cm, voire pas plus de 20 cm. Quant a la hauteur du hourdis, celle-ci est generalement superieure ou egale a 5 cm, voire a 10 cm, mais generalement The functional faces generally have rectangles with their longest side intended to be placed perpendicular to the support beams and measuring at least 40 cm, or even at least 50 cm, but generally not more than 80 cm, or even 70 cm. Their shortest dimension generally does not measure more than 30 cm, or even not more than 20 cm. As for the height of the slab, this is generally greater than or equal to 5 cm, even 10 cm, but generally
inferieure ou egale a 40 cm, voire a 30 cm. less than or equal to 40 cm or even 30 cm.
Le hourdis selon la presente invention peut inclure des renforts internee ou externes tels que des barres, plaques, grilles...qui peuvent etre integres aux profiles ou eke incorpores au hourdis lors de son assemblage. Ces elements de renfort peuvent egalement eke a base de matiere plastique (de meme nature ou de nature differente de celle(s) des profiles), en metal ou en tout auke materiau The slabs according to the present invention can include internal or external reinforcements such as bars, plates, grids, etc. which can be integrated into the profiles or eke incorporated into the slabs during its assembly. These reinforcing elements may also be based on plastic material (of the same kind or of a different nature from that of the profile (s)), in metal or in any other material.
approprie pour jouer le role de renfort. suitable for playing the role of reinforcement.
Lorsque ['assemblage du hourdis selon la presente invention se fait par clippage, les profiles vent de preference munis d' au moins une excroissance et/ou enclave destinee a etre clippee dans une enclave et/ou excroissance When the assembly of the truss according to the present invention is done by clipping, the profiles are preferably provided with at least one protrusion and / or enclave intended to be clipped into an enclave and / or protrusion
correspondante de l'autre profile.the other profile.
- 6 De maniere avantageuse, les elements d'assemblage (excroissance et/ou enclave dans le cas d'un clippage) vent lateraux (c.a.d. en saillie sur l'un des bords destines a reposer sur les poukes de soutien). De maniere plus particulierement preferee, chacun des deux profiles comporte au moins une excroissance et/ou enclave laterale de forme appropriee pour le clippage avec une enclave et/ou excroissance correspondante sur l'autre profile. De maniere encore plus avantageuse, chacun des deux profiles comporte une telle excroissance/enclave sur chacun de ses bords lateraux. Selon cette variante, un mode de clippage qui convient particulierement bien consiste a maintenir en compression, un des profiles par clippage dans le profile complementaire. De - 6 Advantageously, the assembly elements (protuberance and / or enclave in the case of clipping) side wind (ie protruding on one of the edges intended to rest on the support poukes). More particularly preferably, each of the two profiles has at least one protuberance and / or lateral enclave of suitable shape for clipping with a corresponding enclave and / or protuberance on the other profile. Even more advantageously, each of the two profiles has such a projection / enclave on each of its lateral edges. According to this variant, a method of clipping which is particularly suitable consists in maintaining in compression, one of the profiles by clipping in the complementary profile. Of
- preference, le profile inferieur maintien en compression le profile superieur. - Preferably, the lower profile maintains the upper profile in compression.
Cette maniere de proceder induit une precontrainte qui permet d'augmenter la resistance en flexion du hourdis. En outre, lors d'une sollicitation en flexion, This way of proceeding induces a prestress which makes it possible to increase the flexural strength of the slab. In addition, during a bending stress,
['assemblage est renforce.[The assembly is reinforced.
De maniere avantageuse, la forme des profiles et leur assemblage vent tels Advantageously, the shape of the profiles and their assembly are such
qu'un espace vice est menage entre eux, qui traverse le hourdis de part en part. that a vice space is created between them, which crosses the slabs from side to side.
Des lors, bien que ['assemblage des profiles puisse se faire avant la pose des hourdis entre les poutres de soutien, de maniere preferee, il se fait au moins en partie lors de la pose de maniere a pouvoir placer, le cas echeant, des cables et/ou Therefore, although the assembly of the profiles can be done before the installation of the slabs between the support beams, in a preferred manner, it is done at least partially during the installation so as to be able to place, if necessary, cables and / or
des tuyauteries dans l'espace menage entre les deux profiles. pipes in the household space between the two profiles.
Apres la pose des hourdis et le courage de la chape en beton et/ou le placement d'un eventuel revetement de sol sur la face superieure du plancher, on pourvoit generalement la face inferieure du plancher (soit le plafond de lietage inferieur) d'un revetement ayant un effet esthetique, acoustique... Pour faciliter le placement de ce revetement, le hourdis selon la presente invention comprend de preference une face fonctionnelle pourvue de moyens de fixation et/ou d'ancrage, cette face etant destinee a former la partie inferieure du hourdis apres assemblage. Ces moyens de fixation et/ou d'ancrage peuvent etre incorpores au(xj profiles(s) lors de leur mise en forme ou y etre fixes par la suite, la premiere solution etant preferee. Dans le cas ou le revetement inferieur est constitue de platre, beton ou toute autre matiere qui doit y etre deposee a ltetat pateux et puis s'y solidifier, il est particulierement avantageux et simple de munir la face inferieure du hourdis d'excroissances (par exemple en V) de maniere a pourvoir a la faible adherence que presente en general ce type de materiaux aux After the installation of the slabs and the courage of the concrete screed and / or the placement of a possible floor covering on the upper face of the floor, one generally provides the lower face of the floor (ie the lower binding ceiling) of a covering having an aesthetic, acoustic effect ... To facilitate the placement of this covering, the slab according to the present invention preferably comprises a functional face provided with fixing and / or anchoring means, this face being intended to form the lower part of the slab after assembly. These fixing and / or anchoring means can be incorporated into (xj profiles (s) during their shaping or be fixed thereafter, the first solution being preferred. In the case where the lower covering consists of plaster, concrete or any other material which must be deposited there in a pasty state and then solidify there, it is particularly advantageous and simple to provide the underside of the slab with protrusions (for example in V) so as to provide for the low adhesion that this type of material generally presents to
matieres plastiques.plastics.
- 7 Enfin, dans certains cas, il peut s'averer avantageux d'integrer au hourdis sur au moins une de ses faces fonctionnelles, un revetement approprie (avec effet acoustique, esthetique...), plastique ou non, et ce par toutes technique appropriee - 7 Finally, in certain cases, it may prove to be advantageous to integrate in the slab on at least one of its functional faces, an appropriate coating (with acoustic, aesthetic effect ...), plastic or not, and this by all appropriate technique
(coextrusion, laminage...).(coextrusion, rolling ...).
La presente invention est illustree de maniere non limitative par les figures 1 a 4, qui representent une variante particulierement preferee du hourdis selon la presente invention, combinant la plupart des elements avantageux decrits ci avant. A la figure 1, le hourdis est represente selon une coupe transversale (perpendiculaire ses parois/cloisons). Il est constitue d'un profile superieur (1) et d'un profrle inferieur (2), qui ont chacun une face fonctionnelle (respectivement les faces (3) et (4) ) et chacun deux faces laterales (les faces (5) et (6) dans chacun des profiles). Les profiles (1) et (2) comprennent tous deux des cloisons de renforcement verticales (9) dont le nombre et ['emplacement ont ete choisis de maniere a optimiser la resistance mecanique de la structure. L'epaisseur des parois et des cloisons est uniforme et s'eleve a 3mm. Chacun des profiles (1)(2) - comprend egalement une face interne courbe (respectivement (7) et (8)). La face inferieure du hourdis (4) est munie d'excroissances (13) en forme de V destinees The present invention is illustrated in a nonlimiting manner by FIGS. 1 to 4, which represent a particularly preferred variant of the slabs according to the present invention, combining most of the advantageous elements described above. In Figure 1, the slab is shown in a cross section (perpendicular to its walls / partitions). It consists of an upper profile (1) and a lower profile (2), which each have a functional face (respectively the faces (3) and (4)) and each two lateral faces (the faces (5) and (6) in each of the profiles). The profiles (1) and (2) both include vertical reinforcing partitions (9) the number and location of which have been chosen so as to optimize the mechanical strength of the structure. The thickness of the walls and partitions is uniform and amounts to 3mm. Each of the profiles (1) (2) - also includes a curved internal face (respectively (7) and (8)). The underside of the slab (4) is provided with V-shaped protrusions (13) intended
a favoriser ['adherence du platre, beton... qui peut etre applique sur cette face. to favor ['adhesion of plaster, concrete ... which can be applied on this face.
Les profiles (1) et (2) ont une forme et un mode d'assemblage tels qu'un vice est menage entre eux, qui traverse le hourdis de part en part et laisse ainsi un passage pour des cables, conduits La figure 2 detaille les dimensions du hourdis ainsi que les rayons de courbure de certaines parties. On constate que la face fonctionnelle superieure du hourdis (3) est effectivement plane, tandis que sa face fonctionnelle inferieure (4) est legerement incurvee (avec un rayon de courbure de 450.5 cm, soit environ 24 fois la hauteur du hourdis, qui est de 19 cm). Cette legere courbure permet notamment d'ameliorer sensiblement la resistance au fluage de la structure. On constate egalement la forte courbure des faces internee (7) et (8) (respectivement 40 et 70 cm, soit environ 2 fois et 3. 5 fois la hauteur du hourdis), qui permet d'ameliorer substantiellement la resistance en flexion de la structure (notamment The profiles (1) and (2) have a shape and a method of assembly such that a defect is formed between them, which crosses the slab from side to side and thus leaves a passage for cables, conduits Figure 2 details the dimensions of the slab as well as the radii of curvature of certain parts. It can be seen that the upper functional face of the slab (3) is effectively flat, while its lower functional side (4) is slightly curved (with a radius of curvature of 450.5 cm, or approximately 24 times the height of the slab, which is 19 cm). This slight curvature notably makes it possible to significantly improve the creep resistance of the structure. We also note the strong curvature of the internal faces (7) and (8) (respectively 40 and 70 cm, approximately 2 times and 3.5 times the height of the slab), which allows to substantially improve the bending strength of the structure (in particular
sous une charge appliquee au milieu de sa face fonctionnelle superieure (3)). under an applied load in the middle of its upper functional face (3)).
La figure 3 montre en agrandissement, une partie du prohrle superieur (1) ou deux fractions de la paroi se rejoignent sur une certaine longueur, menant a une accumulation de matiere a cet endroit. Afin d'alleger la structure, des vices en forme de fentes (10) ont ete pratiquees dans cette surepaisseur, avec une taille - 8 et une geometric adaptee pour ne pas (ou peu) grever la resistance mecanique du hourdis. La f gure 4 montre en agrandissement, le systeme d' assemblage (par clippage) utilise. Celui-ci est constitue d'une excroissance (11) sur le bord du profile inferieur (2), dans laquelle on vient clipper une excroissance complementaire (12) sur le bord du profile superieur (1). Le profile superieur est ainsi maintenu en compression dans le profile inferieur et on applique ainsi a nouveau une precontrainte a la structure, ce qui augmente encore sa resistance en flexion. En outre, lors de ['application d'une contrainte en flexion, ['assemblage Figure 3 shows in enlargement, a part of the upper prohrle (1) or two fractions of the wall meet over a certain length, leading to an accumulation of material at this location. In order to lighten the structure, vices in the form of slits (10) were made in this extra thickness, with a size - 8 and a geometric adapted so as not to affect (or little) the mechanical resistance of the slab. Figure 4 shows in enlargement, the assembly system (by clipping) used. This consists of a protuberance (11) on the edge of the lower profile (2), in which a complementary protrusion (12) is clipped on the edge of the upper profile (1). The upper profile is thus maintained in compression in the lower profile and a new prestress is thus applied to the structure, which further increases its flexural strength. In addition, during the application of a bending stress, the assembly
par clippage a tendance a se renforcer. by clipping tends to strengthen.
Claims (8)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR0207229A FR2840932A1 (en) | 2002-06-12 | 2002-06-12 | Hollow pugging is composed of two plastics profiles with inner curvatures, clipped together, containing reinforcement bulkheads and fitted with lower fasteners and/or anchors |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR0207229A FR2840932A1 (en) | 2002-06-12 | 2002-06-12 | Hollow pugging is composed of two plastics profiles with inner curvatures, clipped together, containing reinforcement bulkheads and fitted with lower fasteners and/or anchors |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| FR2840932A1 true FR2840932A1 (en) | 2003-12-19 |
Family
ID=29595174
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR0207229A Withdrawn FR2840932A1 (en) | 2002-06-12 | 2002-06-12 | Hollow pugging is composed of two plastics profiles with inner curvatures, clipped together, containing reinforcement bulkheads and fitted with lower fasteners and/or anchors |
Country Status (1)
| Country | Link |
|---|---|
| FR (1) | FR2840932A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2996866A1 (en) * | 2012-10-12 | 2014-04-18 | Ligerienne Beton | Interjoist plastic formwork for producing concrete floor material, has wall, where grooves and ribs of upper face of wall respectively form ribs and grooves of lower face, and reinforcement ribs arranged in grooves of lower face of wall |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR1509111A (en) * | 1966-11-22 | 1968-01-12 | Maneurop | slab formwork element |
| FR2043897A5 (en) | 1969-05-06 | 1971-02-19 | Benzi Edmond | Integral concrete plus hollow pvc or fibro- - cement profiles for prefabricated load-bearing panels |
| DE1952276A1 (en) * | 1969-10-17 | 1971-04-29 | Heitzler Hans Peter | Shuttering for prod of reinforced concrete - slab and girder floors |
| CH541050A (en) * | 1972-07-11 | 1973-08-31 | Thierrin Edmond | Concrete flooring supports - using fibre reinforced hollow plastic sections |
| GB1545246A (en) * | 1975-07-15 | 1979-05-02 | Scheichenbauer M | Thermoplastics resin extrudates for composite concrete floors |
| NL8201521A (en) * | 1982-04-08 | 1983-11-01 | Kwaaitaal Vormbeton B V | Supporting floor-section isolating component - engages with and supports sidewalls supporting floor section on exterior |
-
2002
- 2002-06-12 FR FR0207229A patent/FR2840932A1/en not_active Withdrawn
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR1509111A (en) * | 1966-11-22 | 1968-01-12 | Maneurop | slab formwork element |
| FR2043897A5 (en) | 1969-05-06 | 1971-02-19 | Benzi Edmond | Integral concrete plus hollow pvc or fibro- - cement profiles for prefabricated load-bearing panels |
| DE1952276A1 (en) * | 1969-10-17 | 1971-04-29 | Heitzler Hans Peter | Shuttering for prod of reinforced concrete - slab and girder floors |
| CH541050A (en) * | 1972-07-11 | 1973-08-31 | Thierrin Edmond | Concrete flooring supports - using fibre reinforced hollow plastic sections |
| GB1545246A (en) * | 1975-07-15 | 1979-05-02 | Scheichenbauer M | Thermoplastics resin extrudates for composite concrete floors |
| NL8201521A (en) * | 1982-04-08 | 1983-11-01 | Kwaaitaal Vormbeton B V | Supporting floor-section isolating component - engages with and supports sidewalls supporting floor section on exterior |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2996866A1 (en) * | 2012-10-12 | 2014-04-18 | Ligerienne Beton | Interjoist plastic formwork for producing concrete floor material, has wall, where grooves and ribs of upper face of wall respectively form ribs and grooves of lower face, and reinforcement ribs arranged in grooves of lower face of wall |
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