EP3315692B1 - Device for attaching a supporting part and method for manufacturing a construction element incorporating said attachment device - Google Patents
Device for attaching a supporting part and method for manufacturing a construction element incorporating said attachment device Download PDFInfo
- Publication number
- EP3315692B1 EP3315692B1 EP17187082.7A EP17187082A EP3315692B1 EP 3315692 B1 EP3315692 B1 EP 3315692B1 EP 17187082 A EP17187082 A EP 17187082A EP 3315692 B1 EP3315692 B1 EP 3315692B1
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- EP
- European Patent Office
- Prior art keywords
- fixing device
- interface
- formwork
- magnetized structure
- attraction force
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Links
- 238000010276 construction Methods 0.000 title claims description 21
- 238000004519 manufacturing process Methods 0.000 title claims description 10
- 238000000034 method Methods 0.000 title claims description 3
- 238000009415 formwork Methods 0.000 claims description 41
- 239000000463 material Substances 0.000 claims description 7
- 230000003993 interaction Effects 0.000 claims description 6
- 230000005415 magnetization Effects 0.000 claims description 6
- 238000009434 installation Methods 0.000 claims description 3
- 229910052751 metal Inorganic materials 0.000 description 6
- 239000002184 metal Substances 0.000 description 6
- 230000000694 effects Effects 0.000 description 3
- 239000003292 glue Substances 0.000 description 3
- 239000000853 adhesive Substances 0.000 description 2
- 238000004026 adhesive bonding Methods 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- 229920001971 elastomer Polymers 0.000 description 2
- 229910052779 Neodymium Inorganic materials 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000000295 complement effect Effects 0.000 description 1
- 239000000806 elastomer Substances 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 239000000696 magnetic material Substances 0.000 description 1
- 238000003801 milling Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- QEFYFXOXNSNQGX-UHFFFAOYSA-N neodymium atom Chemical compound [Nd] QEFYFXOXNSNQGX-UHFFFAOYSA-N 0.000 description 1
- 229920001296 polysiloxane Polymers 0.000 description 1
- 238000007790 scraping Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000003351 stiffener Substances 0.000 description 1
- 229910000859 α-Fe Inorganic materials 0.000 description 1
Images
Classifications
-
- 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
- E04G15/061—Non-reusable forms
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B7/00—Moulds; Cores; Mandrels
- B28B7/16—Moulds for making shaped articles with cavities or holes open to the surface, e.g. with blind holes
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/38—Connections for building structures in general
- E04B1/41—Connecting devices specially adapted for embedding in concrete or masonry
-
- 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
- E04G19/00—Auxiliary treatment of forms, e.g. dismantling; Cleaning devices
- E04G19/003—Arrangements for stabilising the forms or for moving the forms from one place to another
Definitions
- the present invention relates to the field of construction and relates to a device for fixing at least one shoring piece and a method of manufacturing a construction element,
- Prefabricated walls are intended for the construction of buildings and have the advantage of facilitating the implementation of the site.
- prefabricated walls are manufactured in a factory and then delivered to the site for assembly.
- Such prefabricated walls can for example consist of walls with integrated formwork, also called prewalls and which include two concrete walls, spaced from one another by stiffeners, serving as formwork.
- Such walls with integrated formwork are arranged vertically then filled with concrete.
- the walls with integrated formwork are held vertically by means of two push-pull props, well known to those skilled in the art.
- Such support makes it possible to stabilize the structure before filling the concrete and before hardening the concrete to prevent the walls with integrated formwork from tilting, for example under the effect of the wind. This step of stabilizing prefabricated walls is also essential with regard to personal safety.
- fixing sockets comprising a tapped cylindrical portion are most often anchored in the wall(s) of the prefabricated wall at the time of their manufacture.
- the props can thus be fixed to the wall via a fixing screw screwed into this fixing socket.
- the fixing sleeves are, in a known manner, associated with a fixing device, commonly called a base or insert.
- An alternative consists of providing a similar plastic fixing device whose cylindrical portion is threaded.
- the fixing sleeve is screwed onto the threaded cylindrical portion of the fixing device.
- due to the association by screwing there results an increase in implementation time, both when installing the fixing sleeves on each fixing device, and when removing them.
- such a fixing device comprising a threaded cylindrical portion can alternatively comprise a metal body instead of a plastic body.
- the frustoconical portion is then provided at its base with a magnet allowing the fixing of this frustoconical portion to the metal formwork.
- Such a fixing device has the advantage of being robust and thus reusable many times.
- This alternative has the same drawbacks as the aforementioned fixing device.
- WO 2015/140969 A1 discloses a fixing device according to the preamble of claim 1.
- the subject of the invention is a device for fixing at least one shoring piece according to claim 1.
- the fixing device 1 of at least one shoring piece 2 on at least part of a surface 3' of formwork 3 of a construction element 16 comprises a body 4 comprising at least a first interface 5 d 'interaction with at least part of a surface 3' of a formwork 3 ( Figures 6A and 6B ) and a second interface 6 for interaction with at least one shoring part 2 ( figures 3, 4 , 6B ).
- shoring piece 2 ( figures 3, 4 And 6B ), a body, preferably metallic, comprising a cooperation interface 18 with the second interface 6 of the fixing device 1.
- the shoring part 2 is intended to be integrated into a construction element 16 and to be fixed to a prop via the cooperation interface 18.
- construction element 16 an element prefabricated in a factory, such as a wall of a wall with integrated formwork or an element cast in place on the site in a hydraulic material, for example concrete.
- the first interface 5 integrates at least one first magnetic structure 7 to generate a first magnetic attraction force and the second interface 6 comprises means for retaining in translation 8, 19.
- such a fixing device 1 allows reliable fixing of the fixing device 1 with the formwork 3 of the construction element 16. This avoids that during the formwork step of the construction element 16, the material of filling does not flow, between the fixing device 1 and the formwork 3.
- the first interface 5 integrating a first magnetic structure 7, the fixing device 1 can easily be fixed to the metal formwork 3, simply by placing it via the first interface 5 on part of the surface 3' of the formwork 3. No added fixing means is necessary, such as glue, as is the case in the prior art.
- the interaction and fixing between the first magnetic structure 7 and the metal formwork 3 taking place under the effect of the first magnetic attraction force, any mechanical wear of the securing device is avoided.
- fixing 1 can be reused a very large number of times.
- the fixing device 1 is also easy to remove from the formwork 3, since it is enough to counter the first force of magnetic attraction, for example by pulling on the fixing device 1 to allow its removal from the formwork 3.
- a fixing device 1 also allows reliable fixing with the shoring part 2 via the translational retaining means 8, 19 to prevent the filling material from flowing into the shoring part 2.
- the fixing device 1 is also easy to remove from the shoring part 2, since it suffices to pull with a traction force in the opposite direction to the first force of magnetic attraction on the fixing device 1 to allow its removal from the shoring piece 2. No screwing operation is necessary, as is the case in the prior art.
- the retaining means comprise at least a second magnetic structure 8 to generate a second magnetic attraction force.
- the second interface 6 integrating a second magnetic structure 8, the fixing device 1 can easily be fixed to the metal shoring part 2.
- the interaction and fixing between the second magnetic structure 8 and the metallic shoring part 2 taking place under the effect of the second magnetic force of attraction, any mechanical wear of the fixing device 1 is avoided.
- the fixing device 1 can be reused a very large number of times.
- the fixing device 1 is also easy to remove from the shoring piece 2, since it suffices to counter the second force of magnetic attraction, for example by pulling according to a traction force in the opposite direction to the second force of magnetic attraction on the fixing device 1 to allow its removal from the shoring part 2.
- the first force of attraction generated by the first magnetized structure 7 can be equal to the second force of attraction generated by the second magnetized structure 8.
- the first force of attraction generated by the first magnetized structure 7 may differ from the second force of attraction generated by the second magnetized structure 8.
- the first force of attraction generated by the first magnetized structure 7 may be greater than the second force of attraction generated by the second magnetized structure 8.
- this configuration allows a fixing of the fixing device 1 with the formwork 3, which is stronger than the fixing of the latter with the shoring piece 2, which makes it possible to subsequently facilitate the step of removing the formwork from the element. of construction 16.
- the fixing device 1 is automatically separated from the shoring part 2 and remains fixed on the formwork 3. No tools are required to allow the formwork to be removed. This results in ease of implementation of the fixing device 1.
- the body 4 may comprise a first end 9 comprising the first magnetized structure 7 and a second end 10 comprising the second magnetized structure 8, the first end 9 and the second end 10 being opposite.
- At least one of the first interface 5 and/or second interface 6 may respectively comprise at least a first housing 11 and/or a second housing 12 in which at least the first magnetic structure 7 or the second magnetic structure 8 is positioned respectively ( figures 1A, 1B , 2 , 5A, 5B ).
- the fixing device 1 may comprise a first housing 11 and a second housing 12.
- the first housing 11 receives the first magnetic structure 7, and the second housing 12 receives the second magnetic structure 8. More particularly, the first housing 11 is arranged at the first end 9 and the second housing 12 is arranged at the second end 10.
- the body 4 may include at least one cooperation interface with a tool.
- such a cooperation interface makes it possible to facilitate the removal of the fixing device 1 from the shoring part 2 and/or from the formwork 3, for example when the first or the second magnetic attraction force exerted respectively by the first structure magnetized 7 or the second magnetic structure 8 is difficult to counter at the human force alone, or when the second magnetic attraction force exerted by the second magnetized structure 8 is such that the fixing device 1 remains fixed to the shoring part 2 after the step of stripping the construction element 16.
- Channel 15 can be cylindrical and tapped. Such a channel 15 allows the insertion of a tool having a threaded interface, such as for example a threaded rod.
- the body 4 may comprise a first portion 13 extending along the longitudinal axis A of the body 4 and a second portion 14 extending along the longitudinal axis A of the body 4, the first portion 13 having a section greater than the section of the second portion 14.
- the first portion 13 may comprise the first interface 5 and the second portion 14 may comprise the second interface 6 ( figures 1A, 1B , 2 , 5A, 5B ).
- the first portion 13 may have a frustoconical shape and the second portion 14 may have a cylindrical shape, as illustrated by the figures 1A to 2 .
- the cylindrical shape of the second portion 14 can be inserted into the threaded cylindrical portion 18 of the shoring part 2.
- the external surface 17 of the second portion 14 may comprise the anti-slip means 19.
- the step of installing the fixing device 1 on the formwork 3 has the advantage of being quick and of not requiring gluing. It is sufficient to place the first interface 5 of the fixing device 1 on the part of the surface 3' of the formwork 3.
- At least one shoring part 2 can be made available and during an association step the second interface 6 of said at least one fixing device 1 and a cooperation interface 18 complementary to said at least one shoring piece 2 can be associated and fixed together by magnetization ( Figure 6B ).
- the step of associating the fixing device 1 with the shoring part 2 has the advantage of being quick and of not requiring screwing.
- a hydraulic material preferably concrete, can be poured into the formwork 3 ( Figure 7 ).
- the fixing device 1 is separated from the formwork 3.
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Mechanical Engineering (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Ceramic Engineering (AREA)
- Forms Removed On Construction Sites Or Auxiliary Members Thereof (AREA)
- Manufacturing Of Tubular Articles Or Embedded Moulded Articles (AREA)
Description
La présente invention concerne le domaine de la construction et a pour objet un dispositif de fixation d'au moins une pièce d étaiement et un procédé de fabrication d'un élément de construction,The present invention relates to the field of construction and relates to a device for fixing at least one shoring piece and a method of manufacturing a construction element,
Les murs préfabriqués sont destinés à la construction de bâtiment et présentent l'avantage de faciliter la mise en oeuvre du chantier.Prefabricated walls are intended for the construction of buildings and have the advantage of facilitating the implementation of the site.
En général, les murs préfabriqués sont fabriqués en usine puis livrés sur le chantier en vue de leur assemblage. De tels murs préfabriqués peuvent par exemple consister en des murs à coffrage intégré, également appelés prémurs et qui comprennent deux parois en béton, espacées l'une de l'autre par des raidisseurs, servant de coffrage. Sur le chantier, de tels murs à coffrage intégré sont disposés à la verticale puis remplis de béton. Lors d'une phase provisoire préalable au remplissage, les murs à coffrage intégré sont maintenus à la verticale au moyen de deux étais tirant poussant, bien connu de l'homme du métier. Un tel maintien permet de stabiliser l'ouvrage avant le remplissage du béton et avant le durcissement du béton pour éviter que les murs à coffrage intégré ne basculent, par exemple sous l'effet du vent. Cette étape de stabilisation des murs préfabriqués est également primordiale en ce qui concerne la sécurité des personnes. Afin de faciliter la fixation des étais, des douilles de fixation comprenant une portion cylindrique taraudée, sont le plus souvent ancrées dans la ou les parois du mur préfabriqué au moment de leur fabrication. Les étais peuvent ainsi être fixés au mur par l'intermédiaire d'une vis de fixation vissée dans cette douille de fixation.In general, prefabricated walls are manufactured in a factory and then delivered to the site for assembly. Such prefabricated walls can for example consist of walls with integrated formwork, also called prewalls and which include two concrete walls, spaced from one another by stiffeners, serving as formwork. On the construction site, such walls with integrated formwork are arranged vertically then filled with concrete. During a temporary phase prior to filling, the walls with integrated formwork are held vertically by means of two push-pull props, well known to those skilled in the art. Such support makes it possible to stabilize the structure before filling the concrete and before hardening the concrete to prevent the walls with integrated formwork from tilting, for example under the effect of the wind. This step of stabilizing prefabricated walls is also essential with regard to personal safety. In order to facilitate the fixing of the props, fixing sockets comprising a tapped cylindrical portion are most often anchored in the wall(s) of the prefabricated wall at the time of their manufacture. The props can thus be fixed to the wall via a fixing screw screwed into this fixing socket.
Pour procéder à l'ancrage des douilles de fixation dans la ou les parois au moment de la fabrication, les douilles de fixation sont, de manière connue associées à un dispositif de fixation, communément appelé, embase ou insert.To anchor the fixing sleeves in the wall(s) at the time of manufacture, the fixing sleeves are, in a known manner, associated with a fixing device, commonly called a base or insert.
L'on connaît déjà un dispositif de fixation comprenant un corps en plastique comprenant une portion ayant une allure cylindrique et une portion tronconique de plus grande section que celle d'allure cylindrique. La portion cylindrique est destinée à être associée à la douille de fixation par emboîtement serré dans la portion taraudée, et la portion tronconique est destinée à être fixée à un coffrage métallique dans lequel la paroi est destinée à être moulée. Le maintien de la douille de fixation sur la portion cylindrique du dispositif de fixation se fait par friction. La fixation de la portion tronconique sur le coffrage se fait par collage. Toutefois, cette façon de procéder nécessite après démoulage de gratter la colle résiduelle, ce qui impacte le temps de fabrication. Il en résulte également une finition peu esthétique du fait que des résidus de colle peuvent également rester sur la paroi. De plus, du fait du maintien par friction, un tel dispositif de fixation subit une usure rapide. Il en résulte que celui-ci est réutilisable peu de fois et doit en règle générale être remplacé après chaque utilisation.We already know a fixing device comprising a plastic body comprising a portion having a cylindrical appearance and a frustoconical portion of larger section than that of cylindrical appearance. The cylindrical portion is intended to be associated with the fixing sleeve by tight fitting in the threaded portion, and the frustoconical portion is intended to be fixed to a metal formwork in which the wall is intended to be molded. Maintaining the fixing sleeve on the portion cylindrical of the fixing device is done by friction. The frustoconical portion is fixed to the formwork by gluing. However, this way of proceeding requires scraping off the residual glue after unmolding, which impacts manufacturing time. This also results in an unsightly finish as glue residue may also remain on the wall. In addition, due to holding by friction, such a fixing device undergoes rapid wear. As a result, it is reusable only a few times and must generally be replaced after each use.
Une alternative consiste à prévoir un dispositif de fixation similaire en plastique dont la portion cylindrique est filetée. Dans ce cas, la douille de fixation est vissée sur la portion cylindrique filetée du dispositif de fixation. Cependant, du fait de l'association par vissage, il résulte un accroissement du temps de mise en oeuvre, aussi bien lors de la mise en place des douilles de fixation sur chaque dispositif de fixation, que lors de leur retrait.An alternative consists of providing a similar plastic fixing device whose cylindrical portion is threaded. In this case, the fixing sleeve is screwed onto the threaded cylindrical portion of the fixing device. However, due to the association by screwing, there results an increase in implementation time, both when installing the fixing sleeves on each fixing device, and when removing them.
De manière connue, un tel dispositif de fixation comprenant une portion cylindrique filetée peut alternativement comprendre un corps en métal à la place d'un corps en plastique. Dans ce cas, la portion tronconique est alors munie à sa base d'un aimant permettant la fixation de cette portion tronconique sur le coffrage métallique. Un tel dispositif de fixation présente l'avantage d'être robuste et ainsi réutilisable de nombreuses fois. Cette alternative présente cependant les mêmes inconvénients que le dispositif de fixation précité.
La présente invention a pour but de proposer une solution rapide et aisée à mettre en oeuvre, résistante et économique permettant de surmonter les limitations de l'état de la technique indiquées ci-dessus.The present invention aims to propose a quick and easy to implement, resistant and economical solution making it possible to overcome the limitations of the state of the art indicated above.
A cet effet, l'invention a pour objet un dispositif de fixation d'au moins une pièce d'étaiement selon la revendication 1.To this end, the subject of the invention is a device for fixing at least one shoring piece according to
La présente invention concerne également un procédé de fabrication d'un élément de construction, préférentiellement en béton, comportant au moins un dispositif de fixation selon la revendication 14. L'invention sera mieux comprise, grâce à la description ci-après, qui se rapporte à plusieurs modes de réalisation préférés, donnés à titre d'exemples non limitatifs, et expliqués avec référence aux dessins schématiques annexés, dans lesquels :
- la
figure 1A est une vue en perspective du dispositif de fixation selon l'invention, - la
figure 1B est une vue en perspective du dispositif de fixation vue de dessous représenté à lafigure 1A , - la
figure 2 est une vue en coupe du dispositif de fixation représenté à lafigure 1A , - la
figure 3 est une vue en perspective de dessus du dispositif de fixation selon l'invention représenté à lafigure 1A associé à une pièce d'étaiement, - la
figure 4 est une vue en perspective de dessous du dispositif de fixation selon l'invention représenté à lafigure 1A associé à une pièce d'étaiement, - la
figure 5A est une vue en perspective d'un exemple de dispositif de fixation, - la
figure 5B est une vue en perspective du dispositif de fixation vue de dessous représenté à lafigure 5A , - la
figure 6A est une vue en perspective d'une partie d'un coffrage sur lequel est disposé un dispositif de fixation selon l'invention représenté à lafigure 1A , - la
figure 6B est une vue en perspective d'une partie d'un coffrage sur lequel est disposé un dispositif de fixation selon l'invention représenté à lafigure 1A associé à une pièce d'étaiement, et - la
figure 7 est une vue en perspective d'un dispositif de fixation selon l'invention représenté à lafigure 1A associé à une pièce d'étaiement intégré dans un élément de construction en matière de remplissage.
- there
Figure 1A is a perspective view of the fixing device according to the invention, - there
Figure 1B is a perspective view of the fixing device seen from below shown inFigure 1A , - there
figure 2 is a sectional view of the fixing device shown inFigure 1A , - there
Figure 3 is a top perspective view of the fixing device according to the invention shown inFigure 1A associated with a shoring piece, - there
Figure 4 is a perspective view from below of the fixing device according to the invention shown inFigure 1A associated with a shoring piece, - there
figure 5A is a perspective view of an example of a fixing device, - there
Figure 5B is a perspective view of the fixing device seen from below shown infigure 5A , - there
Figure 6A is a perspective view of a part of a formwork on which is arranged a fixing device according to the invention shown inFigure 1A , - there
Figure 6B is a perspective view of a part of a formwork on which is arranged a fixing device according to the invention shown inFigure 1A associated with a shoring piece, and - there
Figure 7 is a perspective view of a fixing device according to the invention shown inFigure 1A associated with a shoring piece integrated into a construction element in terms of filling.
Comme l'illustrent les
On entend par le terme pièce d'étaiement 2 (
On entend par le terme élément de construction 16, un élément préfabriqué en usine, tel qu'une paroi d'un mur à coffrage intégré ou un élément coulé en place sur le chantier dans un matériau hydraulique, par exemple du béton.By the
Dans le dispositif de fixation 1, la première interface 5 intègre au moins une première structure aimantée 7 pour générer une première force d'attraction magnétique et la seconde interface 6 comprend des moyens de retenue en translation 8, 19.In the
Avantageusement, un tel dispositif de fixation 1 permet une fixation fiable du dispositif de fixation 1 avec le coffrage 3 de l'élément de construction 16. On évite ainsi que lors de l'étape de coffrage de l'élément de construction 16, le matériau de remplissage ne coule, entre le dispositif de fixation 1 et le coffrage 3. La première interface 5 intégrant une première structure aimantée 7, le dispositif de fixation 1 peut aisément être fixé au coffrage 3 métallique, simplement en le posant par la première interface 5 sur une partie de la surface 3' du coffrage 3. Aucun moyen de fixation rapporté n'est nécessaire, tel que de la colle, comme c'est le cas dans l'art antérieur. L'interaction et la fixation entre la première structure aimantée 7 et le coffrage 3 métallique se faisant sous l'effet de la première force d'attraction magnétique, on évite toute usure mécanique du dispositif de fixation 1. Il en résulte que le dispositif de fixation 1 peut être réutilisé un très grand nombre de fois. Par ailleurs, le dispositif de fixation 1 est également aisé à retirer du coffrage 3, puisqu'il suffit de contrer la première force d'attraction magnétique, par exemple en tirant sur le dispositif de fixation 1 pour permettre son retrait du coffrage 3. Avantageusement, un tel dispositif de fixation 1 permet également une fixation fiable avec la pièce d'étaiement 2 via les moyens de retenue en translation 8, 19 pour éviter que le matériau de remplissage ne coule dans la pièce d'étaiement 2. Par ailleurs, le dispositif de fixation 1 est également aisé à retirer de la pièce d'étaiement 2, puisqu'il suffit de tirer selon une force de traction de sens opposé à la première force d'attraction magnétique sur le dispositif de fixation 1 pour permettre son retrait de la pièce d'étaiement 2. Aucune opération de vissage n'est nécessaire, comme c'est le cas dans l'art antérieur.Advantageously, such a
Selon l'invention et telle que représentée aux
La seconde interface 6 intégrant une seconde structure aimantée 8, le dispositif de fixation 1 peut aisément être fixé à la pièce d'étaiement 2 métallique. L'interaction et la fixation entre la seconde structure aimantée 8 et la pièce d'étaiement 2 métallique se faisant sous l'effet de la seconde force d'attraction magnétique, on évite toute usure mécanique du dispositif de fixation 1. Il en résulte que le dispositif de fixation 1 peut être réutilisé un très grand nombre de fois. Par ailleurs, le dispositif de fixation 1 est également aisé à retirer de la pièce d'étaiement 2, puisqu'il suffit de contrer la seconde force d'attraction magnétique, par exemple en tirant selon une force de traction de sens opposé à la seconde force d'attraction magnétique sur le dispositif de fixation 1 pour permettre son retrait de la pièce d'étaiement 2.The
Selon une première possibilité, la première force d'attraction générée par la première structure aimantée 7 peut être égale à la seconde force d'attraction générée par la seconde structure aimantée 8.According to a first possibility, the first force of attraction generated by the first
Selon une deuxième possibilité, la première force d'attraction générée par la première structure aimantée 7 peut différer de la seconde force d'attraction générée par la seconde structure aimantée 8.According to a second possibility, the first force of attraction generated by the first
Dans ce cas, la première force d'attraction générée par la première structure aimantée 7 peut être supérieure à la seconde force d'attraction générée par la seconde structure aimantée 8.In this case, the first force of attraction generated by the first
Avantageusement, cette configuration permet une fixation, du dispositif de fixation 1 avec le coffrage 3, plus forte que la fixation de celui-ci avec la pièce d'étaiement 2, ce qui permet de faciliter ultérieurement l'étape de décoffrage de l'élément de construction 16. En effet, lorsque l'élément de construction 16 est retiré du coffrage 3 après durcissement du matériau hydraulique dans lequel celui-ci est formé, le dispositif de fixation 1 est automatiquement séparé de la pièce d'étaiement 2 et reste fixé sur le coffrage 3. Aucun outil n'est nécessaire pour permettre le décoffrage. Il en résulte une facilité de mise en oeuvre du dispositif de fixation 1.Advantageously, this configuration allows a fixing of the fixing
Le corps 4 peut comprendre une première extrémité 9 comprenant la première structure aimantée 7 et une seconde extrémité 10 comprenant la seconde structure aimantée 8, la première extrémité 9 et la seconde extrémité 10 étant opposées.The
Au moins une des première interface 5 et/ou seconde interface 6 peut comprendre respectivement au moins un premier logement 11 et/ou un second logement 12 dans lequel est positionnée respectivement au moins la première structure aimantée 7 ou la seconde structure aimantée 8 (
En effet, comme le représentent les
Le corps 4 peut comprendre au moins une interface de coopération avec un outil.The
L'interface de coopération peut comprendre au moins un canal 15 débouchant au niveau de la première interface 5 et/ou de la seconde interface 6.The cooperation interface may include at least one
Avantageusement, une telle interface de coopération permet de faciliter le retrait du dispositif de fixation 1 de la pièce d'étaiement 2 et/ou du coffrage 3, par exemple lorsque la première ou la seconde force d'attraction magnétique exercée respectivement par la première structure aimantée 7 ou la seconde structure aimantée 8 est difficile à contrer à la seule force humaine, ou encore lorsque la seconde force d'attraction magnétique exercée par la seconde structure aimantée 8 est telle que le dispositif de fixation 1 reste fixé à la pièce d'étaiement 2 après l'étape de décoffrage de l'élément de construction 16.Advantageously, such a cooperation interface makes it possible to facilitate the removal of the fixing
Le canal 15 peut être cylindrique et taraudé. Un tel canal 15 permet l'insertion d'un outil ayant une interface filetée, comme par exemple une tige filetée.
L'interface de coopération peut comprendre un unique canal 15, l'unique canal 15 étant traversant, s'étendant le long d'un axe longitudinal A du corps 4 et débouchant au niveau de la première extrémité 9, d'une part, et de la seconde extrémité 10, d'autre part (
Le canal 15 peut déboucher dans le premier logement 11 et/ou dans le second logement 12 (
Le corps 4 peut comprendre une première portion 13 s'étendant selon l'axe longitudinal A du corps 4 et une seconde portion 14 s'étendant selon l'axe longitudinal A du corps 4, la première portion 13 ayant une section supérieure à la section de la seconde portion 14. La première portion 13 peut comprendre la première interface 5 et la seconde portion 14 peut comprendre la seconde interface 6 (
Avantageusement, la seconde portion 14 est destinée à coopérer avec la pièce d'étaiement 2 via l'interface de coopération 18, comme le représentent les
La première portion 13 peut présenter une forme tronconique et la seconde portion 14 peut présenter une forme cylindrique, comme l'illustrent les
Avantageusement, la forme cylindrique de la seconde portion 14 peut être insérée dans la portion cylindrique 18 taraudée de la pièce d'étaiement 2.Advantageously, the cylindrical shape of the
La section de la seconde portion 14 peut être inférieure à la section de la portion cylindrique 18 taraudée de la pièce d'étaiement 2.The section of the
Dans ce cas, il existe un jeu et l'emboîtement ne génère ni friction ni frottement entre la seconde portion 14 cylindrique et la portion cylindrique 18 taraudée de la pièce d'étaiement 2. On évite ainsi l'usure du dispositif de fixation 1. La fixation entre le dispositif de fixation 1 et la pièce d'étaiement 2 est uniquement réalisée au moyen de la seconde structure aimantée 8. On évite ainsi après emboîtement un mouvement de translation de la seconde portion 14 dans la portion cylindrique 18.In this case, there is play and the interlocking does not generate any friction or friction between the second
Selon un exemple ne faisant pas partie de l'invention revendiquée, illustré aux
Dans ce cas, la surface externe 17 de la seconde portion 14 peut comprendre les moyens antidérapants 19.In this case, the
Ces moyens antidérapants 19 peuvent être intégrés ou rapportés. Dans ce dernier cas, ils peuvent consister en des joints annulaires 19 (
Dans cet exemple du dispositif de fixation 1, la seconde interface 6 peut intégrer au moins une seconde structure aimantée 8 pour générer une seconde force d'attraction magnétique, comme décrit précédemment ou non.In this example of the fixing
Dans ce dernier cas qui n'est pas illustré, seule une force de friction entre les moyens antidérapants 19 et la portion cylindrique 18 taraudée de la pièce d'étaiement 2 permet un maintien du dispositif de fixation 1 avec la pièce d'étaiement 2. On évite ainsi après emboîtement un mouvement de translation de la seconde portion 14 dans la portion cylindrique 18. Le dispositif de fixation 1 est également aisé à retirer de la pièce d'étaiement 2, puisqu'il suffit de contrer la force de friction exercée par les moyens antidérapants 19, par exemple en tirant sur le dispositif de fixation 1 pour permettre son retrait de la pièce d'étaiement 2. L'étape de décoffrage en est par conséquent facilitée.In this last case which is not illustrated, only a friction force between the anti-slip means 19 and the threaded
Le corps 4 du dispositif de fixation est de préférence métallique. De préférence, le corps 4 peut être en acier ou en inox.The
La première structure aimantée 7 et/ou la seconde structure aimantée 8 peuvent consister en un aimant, préférentiellement permanent, ou au moins une couche de matériau magnétique déposée respectivement au niveau des première et seconde extrémités 9, 10.The first
Par exemple, la composition de l'aimant peut comprendre du néodyme ou de la ferrite.For example, the composition of the magnet may include neodymium or ferrite.
A titre d'exemple, la première structure aimantée 7 peut comprendre un aimant ayant une force d'adhérence comprise entre 5 kilogrammes et 10 kilogrammes et de préférence égale à 8,5 kilogrammes.For example, the first
A titre d'exemple, la seconde structure aimantée 8 peut comprendre un aimant ayant une force d'adhérence comprise entre 300 grammes et 1000 grammes et de préférence égale à 500 grammes.For example, the second
Comme le montrent les
Dans ce cas, les premier et/ou second logements 11, 12 peuvent être un fraisage annulaire ou une gorge annulaire. Dans ce cas, les premier et second logements 11, 12 peuvent être coaxiaux et peuvent être centrés sur l'axe longitudinal A.In this case, the first and/or
Le procédé de fabrication d'un élément de construction 16, préférentiellement en béton, comporte au moins un dispositif de fixation.The method of manufacturing a
Conformément à l'invention, le procédé est caractérisé en ce qu'il comprend au moins successivement les étapes suivantes :
- une étape de mise à disposition, lors de laquelle
un coffrage 3, et au moins un dispositif defixation 1 tel que décrit précédemment sont mis à disposition, - une étape d'installation, lors de laquelle ledit au moins un dispositif de
fixation 1 est disposé et fixé par aimantation parsa première interface 5 sur une partie d'une surface 3' du coffrage 3 (figure 6A ).
- a provision step, during which a
formwork 3, and at least onefixing device 1 as described above are made available, - an installation step, during which said at least one
fixing device 1 is arranged and fixed by magnetization by itsfirst interface 5 on a part of a surface 3' of the formwork 3 (Figure 6A ).
L'étape d'installation du dispositif de fixation 1 sur le coffrage 3 présente l'avantage d'être rapide et de ne pas nécessiter de collage. Il suffit en effet de poser la première interface 5 du dispositif de fixation 1 sur la partie de la surface 3' du coffrage 3.The step of installing the fixing
Lors de l'étape de mise à disposition, au moins une pièce d'étaiement 2 peut être mise à disposition et lors d'une étape d'association la seconde interface 6 dudit au moins un dispositif de fixation 1 et une interface de coopération 18 complémentaire de ladite au moins une pièce d'étaiement 2 peuvent être associées et fixées entre elles par aimantation (
L'étape d'association du dispositif de fixation 1 avec la pièce d'étaiement 2 présente l'avantage d'être rapide et de ne pas nécessiter de vissage.The step of associating the fixing
Lors d'une étape de remplissage, un matériau hydraulique, préférentiellement du béton peut être coulé dans le coffrage 3 (
Lors d'une étape de décoffrage, ultérieure à l'étape de remplissage et au durcissement du matériau hydraulique, l'élément de construction 16 est retiré du coffrage 3.During a stripping step, subsequent to the filling step and the hardening of the hydraulic material, the
Du fait de l'aimantation du dispositif de fixation 1 au niveau de la première interface 5 et la seconde interface 6, le dispositif de fixation 1 reste fixé sur le coffrage 3 ou sur la pièce d'étaiement 2.Due to the magnetization of the fixing
Préférentiellement lorsque la première structure aimantée 7 est choisie pour générer une première force d'attraction supérieure à la seconde force d'attraction générée par la seconde structure aimantée 8, lors de l'étape de décoffrage, le dispositif de fixation 1 reste fixé par aimantation sur le coffrage 3. Il en résulte que l'élément de construction 16 obtenu est prêt à l'emploi et intègre au moins une pièce d'étaiement 2 qui n'est plus associée au dispositif de fixation 1.Preferably when the first
Lors d'une étape de ramassage, ultérieure à l'étape de décoffrage, le dispositif de fixation 1 est désolidarisé du coffrage 3.During a collection step, subsequent to the stripping step, the fixing
Cette désolidarisation peut se faire en appliquant une force de traction de sens opposé à la première force d'attraction magnétique sur le dispositif de fixation 1 au niveau de la seconde interface 6, soit manuellement, soit à l'aide de moyens robotiques, tel qu'un bras robotisé.This separation can be done by applying a traction force in the opposite direction to the first force of magnetic attraction on the
Bien entendu, l'invention n'est pas limitée aux modes de réalisations décrits et représentés aux dessins annexés.Of course, the invention is not limited to the embodiments described and represented in the accompanying drawings.
Claims (16)
- Fixing device (1) for fixing at least one shoring part (2) to at least a part of a surface (3') of formwork (3) comprising:- a body (4) comprising at least one first interaction interface (5) with at least one part of a surface (3') of a formwork (3) of a construction element (16) and a second interaction interface (6) with at least one shoring part (2),the first interface (5) incorporating at least one first magnetized structure (7) for generating a first magnetic attraction force,the second interface (6) comprising translation retaining means, the fixing device (1) being characterized in that the retaining means comprise at least one second magnetized structure (8) for generating a second magnetic attraction force.
- Fixing device according to Claim 1, characterized in that the first attraction force generated by the first magnetized structure (7) is equal to the second attraction force generated by the second magnetized structure (8).
- Fixing device according to Claim 1, characterized in that the first attraction force generated by the first magnetized structure (7) differs from the second attraction force generated by the second magnetized structure (8).
- Fixing device according to Claim 3, characterized in that the first attraction force generated by the first magnetized structure (7) is greater than the second attraction force generated by the second magnetized structure (8).
- Fixing device according to any one of Claims 1 to 4, characterized in that the body (4) comprises a first end (9) comprising the first magnetized structure (7) and a second end (10) comprising the second magnetized structure (8), the first end (9) and the second end (10) being at opposite points of the body (4).
- Fixing device according to any one of Claims 1 to 5, characterized in that in that at least one element of the first interface (5) and/or the second interface (6) respectively comprises at least one first housing (11) and/or one second housing (12) in which at least the first magnetized structure (7) or the second magnetized structure (8) is respectively positioned.
- Fixing device according to any one of Claims 1 to 6, characterized in that the body (4) comprises at least one cooperation interface with a tool.
- Fixing device according to Claim 7, characterized in that the cooperation interface comprises at least one channel (15) emerging at the first interface (5) and/or the second interface (6).
- Fixing device according to Claim 8, characterized in that the channel (15) is cylindrical and tapped.
- Fixing device according to either one of Claims 8 and 9, characterized in that the cooperation interface comprises a single channel (15), the single channel (15) being a through channel, extending along a longitudinal axis of the body (4) and emerging at the first end (9), on one side, and the second end (10), on the other side.
- Fixing device according to any one of Claims 8 to 10 taken in combination with Claim 6, characterized in that the channel (15) emerges in the first housing (11) and/or in the second housing (12).
- Fixing device according to any one of Claims 1 to 11, characterized in that the body (4) comprises a first portion (13) extending along a longitudinal axis of the body (4) and a second portion (14) extending along the longitudinal axis of the body (4), the first portion (13) having a section greater than the section of the second portion (14), in that the first portion (13) comprises the first interface (5) and in that the second portion (14) comprises the second interface (6).
- Fixing device according to Claim 12, characterized in that the first portion (13) has a cylindrical form and in that the second portion (14) has a tapered form.
- Method for manufacturing a construction element (16), preferentially made of concrete, comprising at least one fixing device (1), characterized in that it comprises at least, in succession, the following steps:- a step of provision, during which a formwork (3), and at least one fixing device (1) according to any one of Claims 1 to 13, are made available,- a step of installation, during which said at least one fixing device (1) is disposed and fixed by magnetization by its first interface (5) onto a part of a surface (3') of the formwork (3).
- Manufacturing method according to Claim 14, characterized in that, during the provision step, at least one shoring part (2) is made available and in that, during a step of joining the second interface (6) of said at least one fixing device (1) and a cooperation interface (18) complementing said at least one shoring part (2) are joined and fixed together by magnetization.
- Manufacturing method according to Claim 15, characterized in that, during a filling step, a hydraulic material, preferentially concrete, is poured into the formwork (3).
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR1660398A FR3057890B1 (en) | 2016-10-26 | 2016-10-26 | DEVICE FOR FASTENING A SHORTING PIECE AND METHOD FOR MANUFACTURING A CONSTRUCTION ELEMENT INCORPORATING SUCH FASTENING DEVICE |
Publications (2)
Publication Number | Publication Date |
---|---|
EP3315692A1 EP3315692A1 (en) | 2018-05-02 |
EP3315692B1 true EP3315692B1 (en) | 2023-12-13 |
Family
ID=58314350
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP17187082.7A Active EP3315692B1 (en) | 2016-10-26 | 2017-08-21 | Device for attaching a supporting part and method for manufacturing a construction element incorporating said attachment device |
Country Status (2)
Country | Link |
---|---|
EP (1) | EP3315692B1 (en) |
FR (1) | FR3057890B1 (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR3098532B1 (en) | 2019-07-11 | 2021-10-22 | Spurgin Leonhart | Device for fixing a shoring piece and method of manufacturing a construction element incorporating said fixing device |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2006112224A (en) * | 2004-09-16 | 2006-04-27 | Tokai Kenshiyou:Kk | Insert for supporting reinforcing bar |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5341192Y2 (en) * | 1975-08-27 | 1978-10-04 | ||
JP2745399B2 (en) * | 1995-12-22 | 1998-04-28 | ハイドロタイル・アジア株式会社 | Sheath pipe mounting device for horizontal tightening holes |
JPH11336234A (en) * | 1998-05-29 | 1999-12-07 | Koka Kyo | Auxiliary anchorage device for mounting embedding component and mounting method of embedding component making use thereof |
WO2015140969A1 (en) * | 2014-03-19 | 2015-09-24 | 株式会社Aoi | Insert fitting |
-
2016
- 2016-10-26 FR FR1660398A patent/FR3057890B1/en active Active
-
2017
- 2017-08-21 EP EP17187082.7A patent/EP3315692B1/en active Active
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2006112224A (en) * | 2004-09-16 | 2006-04-27 | Tokai Kenshiyou:Kk | Insert for supporting reinforcing bar |
Also Published As
Publication number | Publication date |
---|---|
FR3057890A1 (en) | 2018-04-27 |
EP3315692A1 (en) | 2018-05-02 |
FR3057890B1 (en) | 2022-07-15 |
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