EP2248963A1 - Formwork system for the construction of concrete walls using plastic profiles - Google Patents
Formwork system for the construction of concrete walls using plastic profiles Download PDFInfo
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- EP2248963A1 EP2248963A1 EP10305460A EP10305460A EP2248963A1 EP 2248963 A1 EP2248963 A1 EP 2248963A1 EP 10305460 A EP10305460 A EP 10305460A EP 10305460 A EP10305460 A EP 10305460A EP 2248963 A1 EP2248963 A1 EP 2248963A1
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- Prior art keywords
- profiles
- walls
- section
- front wall
- profile
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G15/00—Forms or shutterings for making openings, cavities, slits, or channels
- E04G15/02—Forms or shutterings for making openings, cavities, slits, or channels for windows, doors, or the like
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G15/00—Forms or shutterings for making openings, cavities, slits, or channels
- E04G15/06—Forms or shutterings for making openings, cavities, slits, or channels for cavities or channels in walls of floors, e.g. for making chimneys
- E04G15/063—Re-usable forms
Definitions
- the present invention is in the field of building construction and more particularly the realization of concrete walls for such buildings.
- the invention more specifically relates to the reservation of openings, mainly for doors or windows, in a wall to be obtained by pouring concrete, in place or in prefabrication, and relates specifically to the devices used for this purpose and their implementation. .
- a formwork also known as a manikin
- the formwork is provided with reinforcements to maintain the spacing of the opposite walls and to avoid their deflection under the pressure of liquid concrete.
- the formwork is removed by sliding it transversely to the plane of the wall.
- the walls of the latter a slight obliquity or clearance, also called "fruit", which facilitates the stripping. This is well known and also allows to recover the formwork without being damaged, for later reuse.
- the frames or frames of doors or windows can then be put in place and fixed in the openings thus obtained, in various ways known to those skilled in the art.
- the forms used in the first case are made by assembling boards of wood or plywood to form a generally rectangular frame. It has also been proposed to make these frames, or dummies, from planks or profiles of plastic, in particular PVC.
- the document FR-2915220 describes a formwork system by assembling PVC sections of flattened section, corresponding to the wooden planks. To obtain the required fruit, these flat profiles are connected by molded corner pieces with the inclinations required to give the proper draft. Thus, it is sufficient to assemble a single flat profile, with parallel faces, with such a corner piece to obtain the desired inclination of the outer surfaces of the formwork, as is clearly explained in the aforementioned document.
- the aim of the invention is to propose a solution to these problems and to provide an economical, reusable, recyclable formwork system that can adapt to various wall thicknesses, and that can form forms or dummies for openings as indicated for the first case mentioned above, or to reinforce frame frames in the second case, or to form abutment forms, etc. It also aims to facilitate the production of openings with edges having particular shapes in section, for example the realization of regingots, or an increase or reduction of the fruit, while retaining the use of the same basic elements of the formwork .
- the invention relates to a formwork system for producing, in cast-in-place or prefabricated concrete walls, openings or abutments, this formwork system using plastic profiles for constitute walls in contact with which the concrete is poured.
- this formwork system is characterized in that said profiles have a section comprising side walls having opposite respective outer faces parallel to a base plane, corresponding to the general plane of the wall to be produced, and a front wall having a flat outer face and inclined relative to a normal to said base plane.
- This inclination is equal to that of the desired fruit, for example an angle ⁇ of 1 to 5 degrees, corresponding to a slope of approximately 2 to 5%, typically about 3%, this value being however in no way limiting.
- the term "wall” here means any element having a certain thickness, having two generally parallel faces, and whatever the internal structure of these walls.
- the profiles are preferably cellular profiles, the walls of which may comprise one or more layers of cells, but they could also be profiles formed of a shell wall, solid or not, in a first plastic material, filled with another material such as for example a polymer foam.
- the sections have a section of generally U-shaped shape, said side walls forming the wings of the U and the planes of the outer faces of the flanges of the U being parallel to the base plane, and the front wall forming the bottom of the U, the outer face of the bottom of the U being flat and inclined relative to a normal to said base plane.
- the profiles may also have a section of generally square or rectangular shape, constituted by said parallel side walls, the front wall, and a fourth wall, opposite and parallel to the front wall and extending between the edges of the side walls, in preferably leaving a small overhang of these with respect to the outer face of said fourth wall.
- profiles according to the invention makes it possible to retain the advantages of plastic profiles of known type, in particular with regard to sliding during stripping, allowing the same elements to be recovered and reused many times. It adds in addition a great improvement of rigidity, facilitating the implementation, and limiting the needs for reinforcement elements and support to prevent bending under the pressure of poured concrete.
- the profiles are assembled to form frames, or mannequins, in the format of the desired openings, the outer faces of the end walls of the constituent sections being located at the periphery and facing outwardly of the manikin.
- the assembly is preferably performed in the corners by gluing or welding, after cutting the ends of each profile member beveled at 45 ° for a conventional assembly at right angles.
- the edges of the side walls, opposite to the front wall, as well as the inside face of the front wall are in a plane orthogonal to the base plane of the frame, corresponding to the overall plan of the wall to be made, and the inner faces of the side walls, as well as the planes of the outer faces of said side walls, remaining parallel to said base plane.
- the reinforcements may consist of simple boards formed of plastic profiles, and width corresponding to that of the space between the side walls.
- a rectangular frame formed of U-shaped profiles it will be possible to place reinforcing planks with their ends inserted between the flanges of the U, and others at right angles to the first, abutting at their ends against the edges of the flanges. . It will be possible to do similarly in a frame made of sections of square or rectangular section, placing the ends of the board between the edges of the walls side which are overflowing with respect to the fourth wall.
- the height of the wings of the U will be of the order of 100 mm, and the thickness of the bottom of the U of about 40 mm.
- U-shaped sections are used whose internal width between the inner faces of the side walls, that is to say the U flanges, as well as the thickness of the front wall, that is to say from the bottom of the U, are identical for all the profiles used, and the outer width, between the parallel planes of the outer faces of the wings of the U is defined according to the thickness of the wall to be made.
- the base profile in a basic configuration, suitable for making openings or abouts in walls of the smallest thickness envisaged, ie 150 mm, the base profile will have a width corresponding to this minimum wall thickness, so 150 mm.
- a suitable section whose section includes a portion having shapes and dimensions identical to that of the base profile and incorporating widening elements, located laterally on both sides at least at the wall front, to extend the outer surface of the front wall on each side, and therefore increase its width.
- These widening elements preferably consist of an additional cell added on each side of the U-shaped base, and obtained directly during the extrusion of the profile.
- the profile will have on each side a 5 mm thick cell; for a wall of 180 mm, the dimension of these cells will be 15 mm, and for a wall of 200 mm, the dimension of these cells will be 25 mm.
- similar widening elements are formed at the edges of the walls laterally remote from the front wall, that is to say at the ends of the wings of the U in the case of a U-shaped profile. As will be better understood later, this ensures a better maintenance of the profile. between the panels, avoiding in particular that the profile tends to rotate on itself.
- the width inside the U, or between the inner faces of the side walls remains constant, for example about 80 mm in the case of the above examples.
- this reinforcement typically consisting of a single cellular plastic board, is inserted between the flanges of the U or between the side walls . Since the width between these wings or walls is identical regardless of the outer width of the profile, one can always use the same reinforcing plank section, width 80 in the above example, regardless of the outer width of the profile.
- Another advantage is that, for the manufacture of the different widths of the profile, it is possible to use a single basic extrusion die, corresponding to the maximum width of the profiles, ie 250 mm in the aforementioned example, and this die is added inserts to reduce the width according to that of the profile to be obtained, which limits the manufacturing costs due to the die, using in fact a single flexible die.
- the profile is provided on its inclined face with a complementary cellular profile having a small face located in the plane of one of the outer faces of a lateral wall, a first large face inclined relative thereto by an angle complementary to the angle of inclination of the outer face of the front wall, and a second large face having a section of complementary shape to said particular shape.
- This complementary shape may consist simply of a flat surface more inclined relative to the base plane than the outer surface of the front wall. It is then in fact to increase the fruit of the formwork. It may also, conversely, be less inclined, or even perpendicular to said base plane, so as to reduce or cancel the fruit. It can still have an inclined profile, on only a part of the width of the profile, to achieve for example a regingot.
- the profiles according to the invention can also be used, without being assembled in the form of frames or manikin, for the realization of abouts of veil or abouts of wall.
- the profiles are then placed in a simple alignment between the panels, the wings of the U, or side walls, extending outwardly of the formwork.
- the wings of the U or side walls, with the possible additional widening elements or cells, then participate in maintaining the profiles and preventing any pivoting on themselves between the panels.
- the profiles used comprise magnets, integrated in some of the walls of said sections, and can be distributed over the length thereof.
- magnets make it possible to keep the profiles against metal elements having magnetic properties, such as, for example, steel shuttering panels, or frames metal door frames.
- magnets can be placed in the side walls of the profiles, to maintain them against the panels between which the mannequins or profiles are placed.
- magnets can also be placed in the fitting profiles to hold them against metal frames.
- the manikin 1 represented in Figures 1 to 3 is in the form of a rectangular frame whose four sides are constituted by a plastic honeycomb section 10, for example extruded PVC.
- This frame extends along a basic plane P, corresponding to the general plane of the wall where it will be used, that is to say the plane of the drawing sheet of the figure 2 .
- the section of the profile 10, shown figure 4 has a generally U-shaped having a bottom 11 and two wings 12 and 13, the assembly constituting several cells juxtaposed 15. The number and the relative disposition of these cells are not limited to what is shown figure 4 .
- the wings 12 and 13 of the U extend parallel to the base plane P, the overall width of the U, that is to say the distance between the outer faces 122 and 132 of the wings, being typically 150 mm in width. presented example figure 1 .
- the inner faces 121, 131 of the wings are parallel, for example 81 mm apart, and of the same height h1, for example 65 mm.
- the inner face 111 of the bottom 11 of the U is perpendicular to the plane P.
- the outer face 112 of the bottom of the U is inclined relative to the normal to the plane P and therefore with respect to the inner face 111, of an angle ⁇ corresponding to the value of the desired fruit, a slope of about 2 to 3%, so that the height h2 of the outer face 122 of the wing 12 of the U is a few mm lower than the height h3 of the outer face 132 of the wing 13, which is for example 105 mm. It will be noted that the end faces 123, 133 of the wings of the U are in the same plane orthogonal to the plane P.
- the sections 10 are cut to the desired length, at 45 °, as shown figure 3 , then assembled by gluing or welding at the corners. It will also be possible of course to make assemblies at angles other than 90 °, depending on the needs.
- reinforcing boards 21, 22, also made of cellular plastic sections The figure 8 shows the cross-section of such a board, whose width is substantially equal to the distance between the inner faces of the flanges of the U-shaped section 10. For example, this width is 80 mm, and the thickness of about 34 mm , or substantially the thickness of said wings of the U.
- a board 21 is placed with its ends inserted between the wings of the U profiles 10 facing each other.
- the other boards 22 are placed between the edges 123, 133, wings of the other two sections, thus framing the board 21, as can be seen figure 1 .
- the width and the thickness of the boards 21 and 22 are determined, for example respectively 80 and 34 mm, so, on the one hand, that a board 21 is inserted virtually without clearance between the wings of the U, and on the other hand, that the ends of the boards 22 fit just on the end faces 123, 133 of the wings of the U.
- the fixing of these boards is also achieved by gluing or welding.
- FIGS. 5 to 7 show the section sections 10a, 10b, 10c, adapted for the production of thicker walls, typically 160, 180 and 200 mm respectively.
- All these sections have a central portion of section identical to that of the profile of the figure 4 , and first widening elements 115, 116, which extend the bottom of the U laterally, beyond the outer faces 122, 132 of the wings of the base profile.
- These widening elements comprise cells like the rest of the profile and are formed of a piece with this one during extrusion manufacturing.
- Second widening elements 125, 135, of the same width, are formed at the ends of the wings of the U, and constitute heels which ensure a better holding of the profiles between the panels, and in particular prevent them from pivoting on themselves.
- Figures 11 and 12 illustrate the use of a second complementary profile 40, whose section is arranged to come over-thickness only over a portion of the width of the base profile, to form a regingot.
- FIGS. 13 and 14 show the use of a third complementary section 50, then used to reduce or cancel the fruit of a manikin formed profiles 10b.
- width of these complementary profiles can of course be adapted to each use, depending on the width of the base profile.
- this adjustment can be made by eliminating excess cells from an extruded profile in the greatest usable width by simple longitudinal cuts of the complementary profiles, before they are assembled on the base profile.
- a manikin of the type represented figure 1 can also be used to support a metal frame embedded in a wall during concrete pouring. This particular application is schematically illustrated Figures 15 to 17 .
- the profile shown figure 18 comprises two parallel side walls 1120, 1130 and a front wall 1110 respectively corresponding to the wings 12, 13 and the bottom 11 of the previously described U-profile. It further comprises a fourth wall 1140 extending between the side walls, preferably leaving slight overhangs 1121, 1131 thereof relative to the fourth wall 1140. These overhangs allow for example to house between them ends of the boards 21, as described above for use with U-profiles.
- the figure 19 illustrates a particular embodiment of a profile of greater width, wherein the increase in width is obtained by adding a row of cells 1150 on each side wall, thereby increasing the thickness of these walls, and therefore the width of the profile.
- This last arrangement could also be used for the wings of U-section profiles. It will be possible to play on the number and / or the width of the rows of additional cells to adapt the width of the profile according to the thickness of the wall under construction. .
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Abstract
Description
La présente invention se situe dans le domaine de la construction de bâtiments et plus particulièrement la réalisation de parois en béton pour de tels bâtiments. L'invention concerne plus précisément encore la réservation d'ouvertures, principalement pour des portes ou fenêtres, dans un mur à obtenir par coulage de béton, en place ou en préfabrication, et concerne spécifiquement les dispositifs utilisés à cette fin et leur mise en oeuvre.The present invention is in the field of building construction and more particularly the realization of concrete walls for such buildings. The invention more specifically relates to the reservation of openings, mainly for doors or windows, in a wall to be obtained by pouring concrete, in place or in prefabrication, and relates specifically to the devices used for this purpose and their implementation. .
Il existe typiquement deux manières d'obtenir de telles ouvertures. Dans un premier cas, on dispose à l'endroit prévu, entre les banches de coulée, un coffrage, encore appelé mannequin, de dimensions extérieures correspondantes à celles de l'ouverture désirée, et le béton est ensuite coulé entre les banches et directement au contact des parois du coffrage. Le coffrage est pourvu de renforts pour maintenir l'écartement des parois opposées et éviter leur fléchissement sous la pression du béton liquide. Après durcissement et dépose des banches, le coffrage est enlevé en le glissant transversalement au plan du mur. Pour permettre la sortie du coffrage, on donne aux parois de ce dernier une légère obliquité ou dépouille, encore appelée « fruit », qui facilite le décoffrage. Cela est bien connu et permet de plus de récupérer les coffrages sans qu'ils soient détériorés, pour une réutilisation ultérieure. Les châssis ou cadres de portes ou fenêtres peuvent ensuite être mis en place et fixés dans les ouvertures ainsi obtenues, de diverses manières connues de l'homme du métier.There are typically two ways to obtain such openings. In the first case, a formwork, also known as a manikin, of the external dimensions corresponding to those of the desired opening is provided at the intended location, between the pouring panes, and the concrete is then poured between the boards and directly at the contact of the walls of the formwork. The formwork is provided with reinforcements to maintain the spacing of the opposite walls and to avoid their deflection under the pressure of liquid concrete. After hardening and removal of the boards, the formwork is removed by sliding it transversely to the plane of the wall. To allow the exit of the formwork, it gives the walls of the latter a slight obliquity or clearance, also called "fruit", which facilitates the stripping. This is well known and also allows to recover the formwork without being damaged, for later reuse. The frames or frames of doors or windows can then be put in place and fixed in the openings thus obtained, in various ways known to those skilled in the art.
Dans l'autre cas, ce sont les huisseries, châssis ou cadres généralement métalliques de portes ou fenêtres, qui sont placées entre les banches et servent alors directement de coffrage, le béton étant coulé directement au contact de ces huisseries. Dans ces cas aussi, des renforts doivent être placés pour éviter le fléchissement des montants ou traverses de ces cadres sous la pression du béton liquide.In the other case, it is the door frames, frames or generally metal frames of doors or windows, which are placed between the panels and then serve directly formwork, concrete being poured directly into contact with these frames. In these cases as well, reinforcements must be placed to prevent sagging of the uprights or crosspieces of these frames under the pressure of liquid concrete.
Traditionnellement, les coffrages utilisés dans le premier cas sont réalisés par assemblage de planches en bois ou contreplaqué, pour former un cadre généralement de forme rectangulaire. Il a déjà aussi été proposé de réaliser ces cadres, ou mannequins, à partir de planches ou profilés en matière plastique, en particulier en PVC.Traditionally, the forms used in the first case are made by assembling boards of wood or plywood to form a generally rectangular frame. It has also been proposed to make these frames, or dummies, from planks or profiles of plastic, in particular PVC.
Ainsi, le document
L'avantage de ce système est que les profilés plats utilisés peuvent être obtenus en grandes longueurs, sous forme de profilés alvéolaires, donc légers, par des procédés classiques d'extrusion. Il suffit ensuite de recouper ces profilés à la bonne longueur, selon des coupes droites, donc aisées, pour réaliser les coffrages. Mais ce système nécessite aussi la réalisation des pièces d'angles, relativement compliquées du fait de leurs formes et notamment des inclinaisons requises selon le fruit désiré. Il reste aussi bien sûr à assurer une rigidité suffisante de ces profilés, par des renforts d'autant plus nombreux que les profilés sont relativement peu épais et donc sujet à de fortes flexions s'ils ne sont pas raidis. Il aurait été possible d'améliorer la rigidité de ces profilés par des inserts métalliques, mais au détriment du coût de revient et de la recyclabilité des matériaux.The advantage of this system is that the flat profiles used can be obtained in long lengths, in the form of honeycomb profiles, so light, by conventional extrusion processes. It is then sufficient to cut these profiles to the right length, according to straight cuts, so easy, to achieve the formwork. But this system also requires the production of corner pieces, relatively complicated because of their shape and in particular inclinations required according to the desired fruit. It is of course also necessary to ensure sufficient rigidity of these profiles, reinforcements all the more numerous that the profiles are relatively thin and therefore subject to strong bending if they are not stiffened. It would have been possible to improve the rigidity of these profiles by metal inserts, but at the expense of cost and recyclability of materials.
L'invention a pour but de proposer une solution à ces problèmes et fournir un système de coffrage économique, réutilisable, recyclable, pouvant s'adapter à diverses épaisseurs de mur, et apte à constituer des coffrages ou mannequins pour des ouvertures comme indiqué pour le premier cas cité précédemment, ou pour assurer le renfort de cadres d'huisserie dans le deuxième cas, ou encore former des coffrages d'abouts, etc. Elle vise aussi à faciliter la réalisation d'ouvertures avec des bords présentant des formes particulières en section, par exemple la réalisation de regingots, ou une augmentation ou une réduction du fruit, tout en conservant l'utilisation des mêmes éléments de base constitutifs des coffrages.The aim of the invention is to propose a solution to these problems and to provide an economical, reusable, recyclable formwork system that can adapt to various wall thicknesses, and that can form forms or dummies for openings as indicated for the first case mentioned above, or to reinforce frame frames in the second case, or to form abutment forms, etc. It also aims to facilitate the production of openings with edges having particular shapes in section, for example the realization of regingots, or an increase or reduction of the fruit, while retaining the use of the same basic elements of the formwork .
Avec ces objectifs en vue, l'invention a pour objet un système de coffrage pour la réalisation, dans des murs en béton coulés en place ou préfabriqués, d'ouvertures ou d'abouts, ce système de coffrage utilisant des profilés en matière plastique pour constituer des parois au contact desquelles le béton est coulé.With these objectives in view, the invention relates to a formwork system for producing, in cast-in-place or prefabricated concrete walls, openings or abutments, this formwork system using plastic profiles for constitute walls in contact with which the concrete is poured.
Selon l'invention, ce système de coffrage est caractérisé en ce que lesdits profilés ont une section comportant des parois latérales ayant des faces extérieures respectives opposées parallèles à un plan de base, correspondant au plan général du mur à réaliser, et une paroi frontale présentant une face extérieure plane et inclinée par rapport à une normale au dit plan de base. Cette inclinaison est égale à celle du fruit désiré, soit par exemple un angle α de 1 à 5 degrés, correspondant à une pente d'environ 2 à 5 %, typiquement de l'ordre de 3 % environ, cette valeur n'étant toutefois nullement limitative.According to the invention, this formwork system is characterized in that said profiles have a section comprising side walls having opposite respective outer faces parallel to a base plane, corresponding to the general plane of the wall to be produced, and a front wall having a flat outer face and inclined relative to a normal to said base plane. This inclination is equal to that of the desired fruit, for example an angle α of 1 to 5 degrees, corresponding to a slope of approximately 2 to 5%, typically about 3%, this value being however in no way limiting.
Il est incidemment précisé que le terme «paroi» s'entend ici de tout élément ayant une certaine épaisseur, comportant deux faces généralement sensiblement parallèles, et quelque soit la structure interne de ces parois. Ainsi, les profilés sont préférentiellement des profilés alvéolaires, dont les parois peuvent comporter une ou plusieurs couches d'alvéoles, mais ils pourraient aussi être des profilés formés d'une paroi enveloppe, pleine ou non, en une première matière plastique, remplie d'une autre matière telle que par exemple une mousse polymère.It is incidentally specified that the term "wall" here means any element having a certain thickness, having two generally parallel faces, and whatever the internal structure of these walls. Thus, the profiles are preferably cellular profiles, the walls of which may comprise one or more layers of cells, but they could also be profiles formed of a shell wall, solid or not, in a first plastic material, filled with another material such as for example a polymer foam.
Selon une disposition particulière, les profilés ont une section de forme générale en U, les dites parois latérales formant les ailes du U et les plans des faces extérieures des ailes du U étant parallèles au plan de base, et la paroi frontale formant le fond du U, la face extérieure du fond du U étant plane et inclinée par rapport à une normale au dit plan de base.According to one particular arrangement, the sections have a section of generally U-shaped shape, said side walls forming the wings of the U and the planes of the outer faces of the flanges of the U being parallel to the base plane, and the front wall forming the bottom of the U, the outer face of the bottom of the U being flat and inclined relative to a normal to said base plane.
Les profilés peuvent aussi avoir une section de forme générale carrée ou rectangulaire, constituée par les dites parois latérales parallèles, la paroi frontale, et une quatrième paroi, opposée et parallèle à la paroi frontale et s'étendant entre les bords des parois latérales, en laissant préférentiellement un petit débord de celles-ci par rapport à la face extérieure de ladite quatrième paroi.The profiles may also have a section of generally square or rectangular shape, constituted by said parallel side walls, the front wall, and a fourth wall, opposite and parallel to the front wall and extending between the edges of the side walls, in preferably leaving a small overhang of these with respect to the outer face of said fourth wall.
L'utilisation de profilés selon l'invention, permet de conserver les avantages des profilés en plastique de type connu, notamment pour ce qui est du glissement lors des décoffrages, permettant de récupérer et réutiliser de nombreuses fois les mêmes éléments. Il ajoute en plus une grande amélioration de la rigidité, facilitant la mise en oeuvre, et limitant les besoins en éléments de renfort et de soutien pour éviter la flexion sous la pression du béton coulé.The use of profiles according to the invention makes it possible to retain the advantages of plastic profiles of known type, in particular with regard to sliding during stripping, allowing the same elements to be recovered and reused many times. It adds in addition a great improvement of rigidity, facilitating the implementation, and limiting the needs for reinforcement elements and support to prevent bending under the pressure of poured concrete.
Des avantages complémentaires ressortent des différentes applications du système selon l'invention.Additional advantages emerge from the various applications of the system according to the invention.
Ainsi, pour la réalisation d'ouverture, les profilés sont assemblés pour former des cadres, ou mannequins, au format des ouvertures souhaitées, les faces extérieures des parois frontales des profilés constitutifs étant situées en périphérie et orientées vers l'extérieur du mannequin. L'assemblage est préférentiellement réalisé dans les angles par collage ou soudage, après découpe des extrémités de chaque élément de profilé en biseau à 45° pour un assemblage classique à angle droit. On notera que, du fait de l'inclinaison de la surface extérieure de la paroi frontale, le fruit requis pour le mannequin est directement obtenu lors de l'assemblage ; les bords des parois latérales, à l'opposé de la paroi frontale, ainsi que la face intérieure de la paroi frontale, sont eux dans un plan orthogonal au plan de base du cadre, correspondant au plan d'ensemble du mur à réaliser, et les faces intérieures des parois latérales, de même que les plans des faces extérieures des dites parois latérales, restant parallèles au dit plan de base.Thus, for the opening embodiment, the profiles are assembled to form frames, or mannequins, in the format of the desired openings, the outer faces of the end walls of the constituent sections being located at the periphery and facing outwardly of the manikin. The assembly is preferably performed in the corners by gluing or welding, after cutting the ends of each profile member beveled at 45 ° for a conventional assembly at right angles. It will be noted that, because of the inclination of the outer surface of the front wall, the fruit required for the manikin is directly obtained during assembly; the edges of the side walls, opposite to the front wall, as well as the inside face of the front wall, are in a plane orthogonal to the base plane of the frame, corresponding to the overall plan of the wall to be made, and the inner faces of the side walls, as well as the planes of the outer faces of said side walls, remaining parallel to said base plane.
Les renforts peuvent être constitués de simples planches formées de profilés en plastique, et de largeur correspondant à celle de l'espace entre les parois latérales. Ainsi, dans un cadre rectangulaire formé de profilés en U, on pourra placer des planches de renforts avec leurs extrémités insérées entre les ailes du U, et d'autres à angle droit par rapport aux premières, butant par leurs extrémités contre les bords des ailes. On pourra faire de manière similaire dans un cadre fait de profilés de section carrée ou rectangulaire, en plaçant les extrémités de la planche entre les bords des parois latérales qui sont en débord par rapport à la quatrième paroi.The reinforcements may consist of simple boards formed of plastic profiles, and width corresponding to that of the space between the side walls. Thus, in a rectangular frame formed of U-shaped profiles, it will be possible to place reinforcing planks with their ends inserted between the flanges of the U, and others at right angles to the first, abutting at their ends against the edges of the flanges. . It will be possible to do similarly in a frame made of sections of square or rectangular section, placing the ends of the board between the edges of the walls side which are overflowing with respect to the fourth wall.
Typiquement, et uniquement à titre d'exemple, la hauteur des ailes du U sera de l'ordre de 100 mm, et l'épaisseur du fond du U d'environ 40 mm.Typically, and only by way of example, the height of the wings of the U will be of the order of 100 mm, and the thickness of the bottom of the U of about 40 mm.
Selon une disposition particulière, on utilise des profilés en U dont la largeur intérieure entre les faces intérieures des parois latérales, c'est-à-dire des ailes du U, ainsi que l'épaisseur de la paroi frontale, c'est-à-dire du fond du U, sont identiques pour tous les profilés utilisés, et la largeur extérieure, entre les plans parallèles des faces extérieures des ailes du U est définie en fonction de l'épaisseur du mur à réaliser.According to one particular arrangement, U-shaped sections are used whose internal width between the inner faces of the side walls, that is to say the U flanges, as well as the thickness of the front wall, that is to say from the bottom of the U, are identical for all the profiles used, and the outer width, between the parallel planes of the outer faces of the wings of the U is defined according to the thickness of the wall to be made.
Ainsi, dans une configuration de base, adaptée pour la réalisation d'ouverture ou d'abouts dans des murs de la plus faible épaisseur envisagée, soit 150 mm, le profilé de base aura une largeur correspondant à cette épaisseur minimale de mur, soit donc 150 mm. Pour des murs plus épais, on utilisera un profilé adapté dont la section comporte une partie ayant des formes et dimensions identiques à celle du profilé de base et intégrant des éléments élargisseurs, situés latéralement de part et d'autre au moins au niveau de la paroi frontale, pour prolonger la surface extérieure de la paroi frontale de chaque côté, et donc augmenter sa largeur. Ces éléments élargisseurs sont préférentiellement constitués d'une alvéole supplémentaire ajoutée de chaque côté de la forme en U de base, et obtenue directement lors de l'extrusion du profilé. Ainsi, pour un mur d'épaisseur 160 mm, le profilé comportera de chaque côté une alvéole de 5mm d'épaisseur ; pour un mur de 180 mm, la dimension de ces alvéoles sera de 15 mm, et pour un mur de 200 mm, la dimension de ces alvéoles sera de 25 mm.Thus, in a basic configuration, suitable for making openings or abouts in walls of the smallest thickness envisaged, ie 150 mm, the base profile will have a width corresponding to this minimum wall thickness, so 150 mm. For thicker walls, use a suitable section whose section includes a portion having shapes and dimensions identical to that of the base profile and incorporating widening elements, located laterally on both sides at least at the wall front, to extend the outer surface of the front wall on each side, and therefore increase its width. These widening elements preferably consist of an additional cell added on each side of the U-shaped base, and obtained directly during the extrusion of the profile. Thus, for a wall 160 mm thick, the profile will have on each side a 5 mm thick cell; for a wall of 180 mm, the dimension of these cells will be 15 mm, and for a wall of 200 mm, the dimension of these cells will be 25 mm.
Préférentiellement aussi, des éléments élargisseurs similaires sont formés au niveau des bords des parois latérales distants de la paroi frontale, c'est-à-dire au niveau des extrémités des ailes du U dans le cas d'un profilé de forme en U. Comme on le comprendra mieux par la suite, cela assure un meilleur maintien du profilé entre les banches, en évitant notamment que le profilé tende à pivoter sur lui-même.Also preferably, similar widening elements are formed at the edges of the walls laterally remote from the front wall, that is to say at the ends of the wings of the U in the case of a U-shaped profile. As will be better understood later, this ensures a better maintenance of the profile. between the panels, avoiding in particular that the profile tends to rotate on itself.
On notera aussi que, au besoin, il sera possible d'utiliser des profilés larges pour les utiliser pour des murs plus minces, simplement en recoupant en long la ou les alvéoles latérales supplémentaires.Note also that, if necessary, it will be possible to use wide profiles to use them for thinner walls, simply by intersecting along the side or additional side cells.
Préférentiellement, quelle que soit la largeur extérieure du profilé, sa largeur à l'intérieur du U, ou entre les faces intérieures des parois latérales, reste constante, par exemple de 80 mm environ dans le cas des exemples précités. Lorsqu'il est nécessaire de placer un renfort pour maintenir le profilé et éviter sa flexion sous la pression du béton coulé, ce renfort, typiquement constitué d'une simple planche en plastique alvéolaire, est inséré entre les ailes du U ou entre les parois latérales. Puisque la largeur entre ces ailes ou parois est identique quelle que soit la largeur extérieure du profilé, on peut utiliser toujours le même profilé de planche de renfort, de largeur 80 dans l'exemple précité, quelle que soit la largeur extérieure du profilé.Preferably, regardless of the outer width of the profile, its width inside the U, or between the inner faces of the side walls, remains constant, for example about 80 mm in the case of the above examples. When it is necessary to place a reinforcement to maintain the profile and avoid its bending under the pressure of cast concrete, this reinforcement, typically consisting of a single cellular plastic board, is inserted between the flanges of the U or between the side walls . Since the width between these wings or walls is identical regardless of the outer width of the profile, one can always use the same reinforcing plank section,
Un autre avantage est que, pour la fabrication des différentes largeurs de profilé, on peut utiliser une seule filière d'extrusion de base, correspondant à la largeur maximale des profilés, soit 250 mm dans l'exemple précité, et on ajoute dans cette filière des éléments rapportés pour en réduire la largeur en fonction de celle du profilé à obtenir, ce qui permet de limiter les coûts de fabrication dus à la filière, en utilisant en fait une seule filière modulable.Another advantage is that, for the manufacture of the different widths of the profile, it is possible to use a single basic extrusion die, corresponding to the maximum width of the profiles, ie 250 mm in the aforementioned example, and this die is added inserts to reduce the width according to that of the profile to be obtained, which limits the manufacturing costs due to the die, using in fact a single flexible die.
Les dispositions qui précèdent pourront être utilisées et adaptées dans le cas de profilés de section de forme carrée ou rectangulaire.The foregoing arrangements may be used and adapted in the case of section sections of square or rectangular shape.
Au lieu de former des éléments élargisseurs seulement vers les bords des parois latérales, on pourra aussi ajouter une rangée continue d'alvéoles sur toute la largeur des dites parois latérales, et par exemple constituer alors chaque paroi latérale de deux rangées ou plus d'alvéoles, au lieu d'une seule.Instead of forming widening elements only towards the edges of the side walls, it is also possible to add a continuous row of cells along the entire width of said side walls, and for example to form each side wall of two or more rows of cells. , instead of just one.
Pour réaliser une surface de béton moulée présentant une section de forme particulière prédéterminée, le profilé est pourvu sur sa face inclinée d'un profilé alvéolaire complémentaire présentant une petite face située dans le plan d'une des faces extérieures d'une paroi latérale, une première grande face inclinée par rapport à celle-ci d'un angle complémentaire à l'angle d'inclinaison de la face extérieure de la paroi frontale, et une seconde grande face présentant une section de forme complémentaire à la dite forme particulière.In order to produce a molded concrete surface having a particular predetermined shape section, the profile is provided on its inclined face with a complementary cellular profile having a small face located in the plane of one of the outer faces of a lateral wall, a first large face inclined relative thereto by an angle complementary to the angle of inclination of the outer face of the front wall, and a second large face having a section of complementary shape to said particular shape.
Cette forme complémentaire peut consister simplement en une surface plane plus inclinée par rapport au plan de base que la surface extérieure de la paroi frontale. Il s'agit alors en fait d'augmenter le fruit du coffrage. Elle peut aussi, inversement, être moins inclinée, ou même perpendiculaire au dit plan de base, de manière à réduire ou annuler le fruit. Elle peut encore présenter un profil incliné, sur seulement une partie de la largeur du profilé, pour réaliser par exemple un regingot.This complementary shape may consist simply of a flat surface more inclined relative to the base plane than the outer surface of the front wall. It is then in fact to increase the fruit of the formwork. It may also, conversely, be less inclined, or even perpendicular to said base plane, so as to reduce or cancel the fruit. It can still have an inclined profile, on only a part of the width of the profile, to achieve for example a regingot.
Les profilés complémentaires décrits ci-dessus peuvent être utilisés avec des profilés de base de section carrée ou rectangulaire ou en U.The additional profiles described above can be used with square or rectangular or U-section base profiles.
Les profilés assemblés sous forme de cadre peuvent aussi être utilisés comme éléments de maintien d'huisserie métallique de portes ou fenêtres lorsque ces huisseries sont directement mises en place entre les banches avant le bétonnage, et donc utilisés comme élément de coffrage, et directement intégrés au mur coulé en béton, comme indiqué précédemment. Dans cette application, on place contre les montants et traverses de l'huisserie un profilé spécial d'adaptation dont la section présente :
- du côté de l'huisserie, une forme complémentaire à celle de ladite huisserie, et
- du côté opposé, une face plane ayant une pente correspondante à celle du cadre,
et on place alors un mannequin réalisé comme précédemment indiqué entre ces éléments, de manière à les maintenir plaqués contre l'huisserie, et empêchant ensuite les déformations de flexion et de torsion de l'huisserie sous la pression du béton coulé.
- on the side of the frame, a shape complementary to that of said frame, and
- on the opposite side, a planar face having a slope corresponding to that of the frame,
and then placing a manikin made as previously indicated between these elements, so as to keep them pressed against the frame, and then preventing the bending and torsion deformation of the frame under the pressure of cast concrete.
Les profilés selon l'invention peuvent aussi être utilisés, sans être assemblés sous forme de cadres ou mannequin, pour la réalisation d'abouts de voile ou abouts de mur. Les profilés sont alors placés en un simple alignement entre les banches, les ailes du U, ou parois latérales, s'étendant vers l'extérieur du coffrage. Les ailes du U ou parois latérales, avec le cas échéant les éléments élargisseurs ou alvéoles supplémentaires, participent alors au maintien des profilés et empêchant tout pivotement sur eux-mêmes entre les banches. Dans le cas d'un profilé en U, on pourra en plus éviter un rapprochement des ailes par des entretoises placées entre les dites ailes, de manière répartie sur la longueur du profilé.The profiles according to the invention can also be used, without being assembled in the form of frames or manikin, for the realization of abouts of veil or abouts of wall. The profiles are then placed in a simple alignment between the panels, the wings of the U, or side walls, extending outwardly of the formwork. The wings of the U or side walls, with the possible additional widening elements or cells, then participate in maintaining the profiles and preventing any pivoting on themselves between the panels. In the case of a U-shaped profile, it will further be possible to avoid bringing the wings closer together by spacers placed between said flanges, distributed over the length of the profile.
Selon une disposition complémentaire, les profilés utilisés comportent des aimants, intégrés dans certaines des parois des dits profilés, et pouvant être répartis sur la longueur de ceux-ci. Ces aimants permettent de maintenir les profilés contre des éléments métalliques ayant des propriétés magnétiques, tels que par exemple des banches de coffrage en acier, ou des cadres d'huisseries métalliques. Par exemple, dans l'utilisation des profilés pour la réalisation de mannequins ou d'abouts de murs, des aimants peuvent être placés dans les parois latérales des profilés, pour les maintenir contre les banches entre lesquelles les mannequins ou profilés sont placés. Dans l'utilisation comme raidisseur de maintien d'huisserie métallique de portes ou fenêtres, des aimants peuvent aussi être placés dans les profilés d'adaptation pour maintenir ceux-ci contre les huisseries métalliques.According to a complementary arrangement, the profiles used comprise magnets, integrated in some of the walls of said sections, and can be distributed over the length thereof. These magnets make it possible to keep the profiles against metal elements having magnetic properties, such as, for example, steel shuttering panels, or frames metal door frames. For example, in the use of the profiles for producing mannequins or wall abutments, magnets can be placed in the side walls of the profiles, to maintain them against the panels between which the mannequins or profiles are placed. In the use as a door or window metal door stiffener, magnets can also be placed in the fitting profiles to hold them against metal frames.
D'autres caractéristiques et avantages apparaîtront dans la description qui va être faite d'un système de coffrage conforme à l'invention, ainsi que de diverses applications.Other features and advantages will appear in the description that will be made of a formwork system according to the invention, as well as various applications.
On se reportera aux dessins annexés dans lesquels :
- la
figure 1 est une vue en perspective d'un mannequin conforme à l'invention, formé avec des profilés de section en U, - la
figure 2 est une vue en plan de ce mannequin, - la
figure 3 est une vue « éclatée » de ce mannequin, - la
figure 4 est une vue en coupe du profilé de base, de section en forme de U, utilisé pour réaliser le mannequin, pour un mur de 150 mm d'épaisseur, - les
figures 5 à 7 sont des vues en coupe de profilés utilisés pour réaliser le mannequin adapté pour des murs plus épais, respectivement de 160, 180 et 200 mm, - la
figure 8 est une section de la planche de renfort utilisée dans le mannequin de lafigure 1 , - la
figure 9 est une section d'un premier profilé complémentaire, destiné à augmenter le fruit du mannequin, - la
figure 10 est une vue en coupe du profilé de base, en largeur 200, sur lequel le premier profilé complémentaire est fixé, par exemple par collage, - la
figure 11 est une vue en coupe d'un second profilé complémentaire, destiné à la réalisation d'un regingot, - la
figure 12 est une vue en coupe du profilé de base, en largeur 180, sur lequel le second profilé complémentaire est fixé, - la
figure 13 est une vue en coupe d'un troisième profilé complémentaire, destiné à annuler le fruit du mannequin, - la
figure 14 est une vue en coupe du profilé de base, en largeur 180, sur lequel le troisième profilé complémentaire est fixé, - la
figure 15 illustre, en vue en plan, l'utilisation d'un mannequin selon l'invention et de profilés spéciaux d'adaptation, représentés sur la partie gauche de la figure, pour assurer le maintien d'une huisserie métallique, représentée sur la partie droite, placée entre les banches de coulée, - la
figure 16 est une vue en section transversale selon la ligne XVI-XVI de lafigure 15 , des éléments prêts à être mis en place, - la
figure 17 illustre l'huisserie et ces éléments encore en place, après la coulée du mur, - les
figures 18 et 19 illustrent deux autres formes de profilés conformes à l'invention, les profilés ayant une section de forme carrée ou rectangulaire et des largeurs respectives adaptées à l'épaisseur des murs à réaliser.
- the
figure 1 is a perspective view of a manikin according to the invention, formed with U-section sections, - the
figure 2 is a plan view of this manikin, - the
figure 3 is an "exploded" view of this manikin, - the
figure 4 is a sectional view of the U-section base section, used to make the manikin, for a wall 150 mm thick, - the
Figures 5 to 7 are sectional views of profiles used to make the manikin suitable for thicker walls, respectively 160, 180 and 200 mm, - the
figure 8 is a section of the reinforcement board used in the dummy of thefigure 1 , - the
figure 9 is a section of a first complementary profile, intended to increase the fruit of the manikin, - the
figure 10 is a sectional view of the base profile, in width 200, on which the first complementary profile is fixed, for example by gluing, - the
figure 11 is a sectional view of a second complementary section, intended for the production of a regingot, - the
figure 12 is a sectional view of the base profile, in width 180, on which the second complementary section is fixed, - the
figure 13 is a sectional view of a third complementary profile, intended to cancel the fruit of the manikin, - the
figure 14 is a sectional view of the base profile, in width 180, on which the third complementary section is fixed, - the
figure 15 illustrates, in plan view, the use of a manikin according to the invention and special adaptation profiles, shown on the left part of the figure, to ensure the maintenance of a metal frame, shown on the right side , placed between the drains, - the
figure 16 is a cross-sectional view along line XVI-XVI of thefigure 15 , elements ready to be put in place, - the
figure 17 illustrates the frame and these elements still in place, after the casting of the wall, - the
Figures 18 and 19 illustrate two other shapes of profiles according to the invention, the profiles having a section of square or rectangular shape and respective widths adapted to the thickness of the walls to achieve.
Le mannequin 1 représenté aux
La section du profilé 10, représentée
Pour constituer le mannequin 1, les profilés 10 sont coupés à la longueur désirée, à 45°, comme représenté
Pour renforcer les profilés et éviter leur déformation lors des manutentions du mannequin, et surtout sous la pression du béton liquide lors du bétonnage, on utilise des planches de renforts 21, 22, réalisées aussi en profilés plastiques alvéolaires. La
Sur le dessin de la
Les
Des seconds éléments élargisseurs 125, 135, de même largeur, sont formés au niveau des extrémités des ailes du U, et constituent des talons qui assurent une meilleure tenue des profilés entre les banches, et notamment les empêchent de pivoter sur eux-mêmes.Second widening
Cette conception des différents formats de profilés rend la fabrication plus économique, en permettant l'utilisation d'un même filière d'extrusion, adaptée pour réaliser les profilés de plus grande largeur, et à l'intérieur de laquelle on rajoutera des éléments de filière amovibles permettant de réduire cette section, pou réaliser les profilés de plus petite largeur.This design of the different sizes of profiles makes manufacturing more economical, by allowing the use of the same extrusion die, adapted to make the profiles of greater width, and inside which we will add elements of die removable to reduce this section, to achieve the profiles of smaller width.
On notera que dans tous les formats de profilés, 10, 10a, 10b, 10c, la largeur intérieure du U, entre les faces 121 et 131 des ailes, reste la même, ce qui permet notamment d'utiliser les mêmes planches de renfort quels que soient les formats de profilés.Note that in all profile sizes, 10, 10a, 10b, 10c, the inner width of the U, between the
La
- une
petite face 31 placée dans le plan latéral du U du côté de sa plus grande hauteur, - une première
grande face 32 inclinée par rapport à celle-ci d'un angle complémentaire à l'angle d'inclinaison de laface extérieure 112 du fond du U, de manière à s'adapter sur cetteface extérieure 112 en gardant bien la face 31 parallèle au plan de base P, et donc parallèle à la surface de la banche, - une seconde
grande face 33 plane et présentant une inclinaison supérieure à celle de laface extérieure 112 du profilé de base.
- a
small face 31 placed in the lateral plane of the U on the side of its greatest height, - a first
large face 32 inclined relative thereto by an angle complementary to the angle of inclination of theouter face 112 of the bottom of the U, so as to fit on thisouter face 112 in keeping theface 31 parallel to the base plane P, and therefore parallel to the surface of the form, - a second
large face 33 flat and having an inclination greater than that of theouter face 112 of the base profile.
De manière similaire et qui sera aisément comprise, les
Les
La largeur de ces profilés complémentaire pourra bien sûr être adaptée à chaque utilisation, en fonction de la largeur du profilé de base. On pourra notamment procéder à cet ajustement, en supprimant des alvéoles en trop d'un profilé extrudé dans la plus grande largeur utilisable, par de simples découpes longitudinales des profilés complémentaires, avant leur assemblage sur le profilé de base.The width of these complementary profiles can of course be adapted to each use, depending on the width of the base profile. In particular, this adjustment can be made by eliminating excess cells from an extruded profile in the greatest usable width by simple longitudinal cuts of the complementary profiles, before they are assembled on the base profile.
Un mannequin du type de celui représenté
La
- du côté de l'huisserie 60, une forme 81 complémentaire à celle de ladite huisserie, et
- du côté opposé,
une face plane 82 ayant une pente complémentaire au fruit du cadre de mannequin 70.
- on the side of the
frame 60, ashape 81 complementary to that of said frame, and - on the opposite side, a
flat face 82 having a slope complementary to the fruit of themanikin frame 70.
L'utilisation de ce système s'effectue par la mise en place des profilés spéciaux d'adaptation 80 contre les montants et traverse de l'huisserie 60, puis insertion du mannequin 70, lequel peut être solidarisé sur les profilés spéciaux d'adaptation 80 par des organes de fixation 85. Pour faciliter le maintien des profilés spéciaux d'adaptation 80 sur l'huisserie métallique en acier 60 avant et pendant la mise en place du mannequin 70, des aimants 86 peuvent être prévus, intégrés dans les profilés spéciaux d'adaptation 80. Lors de la coulée du béton, le mannequin empêche les déformations éventuelles de l'huisserie sous la pression du béton. Après la solidification du mur en béton 90, l'ensemble se présente comme illustré
Le profilé représenté
On comprendra aisément que ce profilé à section fermée, carrée ou rectangulaire, est en fait équivalent au profilé en U précédemment décrit, et comporte seulement en plus ladite quatrième paroi. Les dispositions décrites précédemment concernant les profilés de différentes largeurs, et l'utilisation de profilés complémentaires, s'appliquent donc également à ces profilés à section fermée.It will be readily understood that this closed-section section, square or rectangular, is in fact equivalent to the U-profile previously described, and has only said fourth wall. The arrangements described above concerning the profiles of different widths, and the use of complementary profiles, therefore also apply to these sections with closed section.
La
Claims (15)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
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FR0952939A FR2945062B1 (en) | 2009-05-01 | 2009-05-01 | FORMWORK SYSTEM FOR PRODUCING CONCRETE WALLS USING PLASTIC PROFILES |
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EP2248963A1 true EP2248963A1 (en) | 2010-11-10 |
Family
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Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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EP10305460A Withdrawn EP2248963A1 (en) | 2009-05-01 | 2010-04-29 | Formwork system for the construction of concrete walls using plastic profiles |
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EP (1) | EP2248963A1 (en) |
FR (1) | FR2945062B1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR3035131A1 (en) * | 2015-04-16 | 2016-10-21 | Coffrabat | METHOD FOR MANUFACTURING FORMWORK MEMBER AND FORMWORK MEMBER |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
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FR3025543B1 (en) * | 2014-09-10 | 2016-09-02 | Atout Coffrage | FORMWORK SYSTEM WITH WOOD PROFILES |
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EP1710383A1 (en) * | 2004-01-09 | 2006-10-11 | José Angel Navarro Pradas | Protective frame for mounting casings |
FR2915220A1 (en) | 2007-04-23 | 2008-10-24 | Dominique Bargues | ANGLE ASSEMBLING MEMBER FOR FORMWORK AND FORMWORK THUS OBTAINED |
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2009
- 2009-05-01 FR FR0952939A patent/FR2945062B1/en not_active Expired - Fee Related
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---|---|---|---|---|
DE2359754A1 (en) * | 1973-11-30 | 1975-06-12 | Huennebeck Gmbh | Steel formwork surface cutout magnetic fixture - with form-surface oriented attachment on magnet fitting into hole |
FR2346544A1 (en) * | 1976-04-02 | 1977-10-28 | Technal International Sa | Door frame rabbet mfr. - using jigs accommodating dowels and removed after cement has set |
JPS5366828U (en) * | 1976-11-08 | 1978-06-05 | ||
FR2657109A1 (en) * | 1990-01-18 | 1991-07-19 | Cecam Sarl | Method for assembling shuttering elements intended for preparing (organising) the empty spaces of buildings |
EP1710383A1 (en) * | 2004-01-09 | 2006-10-11 | José Angel Navarro Pradas | Protective frame for mounting casings |
FR2915220A1 (en) | 2007-04-23 | 2008-10-24 | Dominique Bargues | ANGLE ASSEMBLING MEMBER FOR FORMWORK AND FORMWORK THUS OBTAINED |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR3035131A1 (en) * | 2015-04-16 | 2016-10-21 | Coffrabat | METHOD FOR MANUFACTURING FORMWORK MEMBER AND FORMWORK MEMBER |
Also Published As
Publication number | Publication date |
---|---|
FR2945062A1 (en) | 2010-11-05 |
FR2945062B1 (en) | 2011-07-22 |
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