EP3628796B1 - Continuity box for tie bars and method for installing the tie bars in said continuity box - Google Patents

Continuity box for tie bars and method for installing the tie bars in said continuity box Download PDF

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Publication number
EP3628796B1
EP3628796B1 EP19199028.2A EP19199028A EP3628796B1 EP 3628796 B1 EP3628796 B1 EP 3628796B1 EP 19199028 A EP19199028 A EP 19199028A EP 3628796 B1 EP3628796 B1 EP 3628796B1
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EP
European Patent Office
Prior art keywords
tie bars
continuity
box
support part
openings
Prior art date
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EP19199028.2A
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German (de)
French (fr)
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EP3628796A1 (en
Inventor
Philippe MIRAS
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Plaka Group France SASU
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Plaka Group France SASU
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Publication of EP3628796A1 publication Critical patent/EP3628796A1/en
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Publication of EP3628796B1 publication Critical patent/EP3628796B1/en
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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
    • E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
    • E04G21/12—Mounting of reinforcing inserts; Prestressing
    • E04G21/125—Reinforcement continuity box
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C5/00—Reinforcing elements, e.g. for concrete; Auxiliary elements therefor
    • E04C5/16—Auxiliary parts for reinforcements, e.g. connectors, spacers, stirrups
    • E04C5/168—Spacers connecting parts for reinforcements and spacing the reinforcements from the form
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C5/00—Reinforcing elements, e.g. for concrete; Auxiliary elements therefor
    • E04C5/16—Auxiliary parts for reinforcements, e.g. connectors, spacers, stirrups
    • E04C5/18—Spacers of metal or substantially of metal

Definitions

  • the present invention relates to a waiting box for receiving waiting connecting reinforcements, commonly called a “waiting box”, comprising a support element consisting of a bottom wall extending along a longitudinal axis and bordered by two. side walls parallel to said longitudinal axis, said support element being arranged to receive a plurality of connecting frames including a protruding wing which passes through said bottom wall, and a folded wing which is housed inside said support element between the two side walls, a cover arranged to extend parallel to said bottom wall, to close said support member and to contain the folded wing of said frames in the interior volume of said support member, and two closure pieces arranged to close the ends of said support member and to seal said waiting box, said bottom wall comprising a plurality of main openings extending between the two side walls of said support element, and arranged to allow the introduction of the protruding wing of said connecting frames, and said waiting box further comprising a closure device arranged to close said main openings after installation of said connecting reinforcements and to ensure the sealing of said waiting box
  • the present invention also relates to a method of mounting connecting reinforcements waiting in said waiting box.
  • Waiting boxes of this type designed to receive waiting connecting reinforcements are well known in the construction field, and in particular in the construction of reinforced concrete structures and buildings. They are commonly used to be able to link, by means of metal connecting reinforcements, two construction elements produced during two phases of concreting, for example a wall and a slab.
  • waiting boxes which are intended to remain at least partly in the structure
  • waiting boxes which are removed from the structure before the second phase of concreting.
  • the waiting boxes can mainly be made of metallic materials, such as steel, an example of which is described in the publication.
  • FR 3 018 839 B1 or in synthetic or composite materials, an example of which is described in the publication FR 2 796 095 B1
  • the waiting box of DE29916011U1 describes the technical characteristics of the preamble of claim 1.
  • the connecting reinforcements in general consist of a metallic wire element, such as a rod, a bar, or the like made for example of steel, and provided with a notch, a groove, or the like to increase the surface. bond between steel and concrete.
  • the connecting reinforcements 1 intended to be on standby are most of the time bent to form a U, then bent substantially at right angles to form a square, as shown in figure 1 .
  • the square-shaped connecting frame 1 thus comprises a first wing 2 formed by the U-bend 3, intended to protrude outside the waiting box to be embedded in the concrete of a first phase. concrete, and a second wing 4 formed by the two free strands 5 in the extension of the U-fold 3, housed in the waiting box.
  • the example described and illustrated is not limiting and extends to any other form of equivalent connecting reinforcements.
  • Known waiting boxes have in their bottom wall a plurality of pairs of calibrated holes to receive the two free strands of each connecting frame, which are introduced into these calibrated holes from the outside to the inside of the element. support, then folded back in order inside the support element, before putting on the cover to close the box.
  • the holes provided in the bottom wall are calibrated to the diameter of the strands of the connecting reinforcements to avoid any penetration of laitance. .
  • This constraint poses numerous drawbacks both during the manufacture of the boxes and during the assembly of the reinforcements in these boxes. Indeed, the calibrated holes make it necessary to produce a model of waiting boxes for each diameter of connecting reinforcement, which increases stocks and complicates the production and management of waiting boxes, these additional costs having an impact on the price. of the product.
  • the publication CH 666 931 describes a waiting box comprising transverse oblong slots in its bottom wall making it possible to insert the frames more easily, each oblong slot being closed by an attached piece, fitted and clipped between the two through strands of each frame.
  • the publication DE 299 16 011 U1 describes a waiting box comprising half-slits and a closing plate housed inside the box, provided with half-slits arranged in opposition to the previous ones to close them around the through strand of each bracket-shaped frame . This solution does not apply to U-bent reinforcement.
  • the present invention aims to overcome these drawbacks by proposing a so-called universal waiting box, that is to say compatible with several modes of use and with several types and diameters of connecting reinforcements, thus making it possible to reduce the number of models to manufacture. It also aims to offer simplicity and rapidity of fitting the fittings, without any attached part that could be lost or lost, thus making it possible to significantly reduce the efforts to be provided by the operators and implicitly the noise pollution generated, and therefore to improve ergonomics. of work and the rate of production. It also aims to open up possibilities for the automation of production.
  • the invention relates to a waiting box of the type indicated in the preamble, characterized in that said closure device comprises at least one closure plate superimposed on the bottom wall of said support element, provided with a plurality of additional openings for the passage of said connecting reinforcements, said closing plate being movable in longitudinal translation with respect to said support element between an open position in which said additional openings are superimposed on said main openings and allow the introduction of said reinforcements of connection, and a closed position in which said additional openings are offset and close said main openings.
  • said main openings and said additional openings have a substantially oblong shape, are arranged at regular intervals, and extend perpendicularly to the longitudinal axis of said support element.
  • Said additional openings can advantageously be extended at their ends by calibration notches extending parallel to the longitudinal axis of said support element and arranged to grip said connecting reinforcements when said closure plate is in the closed position.
  • Said calibration notches may also have a conical shape arranged to admit different diameters of connecting reinforcements.
  • said closure plate can be superimposed on the bottom wall either by its inner face or by its outer face.
  • closure plate and said support element may advantageously comprise complementary interlocking shapes arranged to guide said closure plate in longitudinal translation with respect to said support element.
  • said closure plate may consist of a single piece or of at least two pieces placed end to end.
  • a closure plate is used in which said additional openings are extended at their ends by calibration notches extending parallel to the longitudinal axis of said support element in order to grip said connecting frames when said closure plate is in closed position.
  • the figures 1 to 3 illustrate an example of connecting reinforcements 1 known and compatible with the waiting box 10 according to the invention.
  • the description of these figures can be found in the “state of the art” part and will not be repeated here.
  • the waiting box 10 is illustrated schematically and partially in the figures 4 and 5 , and of more detailed material with reference to an exemplary embodiment preferred in the figures 6 to 14 . It comprises in a known manner a support element 11 receiving the connecting reinforcements 1, a cover 12 and sealing pieces 13 and 14 for closing the waiting box 10 in order to make it watertight, in particular to the laitance of the concrete.
  • the support element 11 consists of a bottom wall 15 extending along a longitudinal axis A and two side walls 16 extending parallel to the longitudinal axis A and bordering the bottom wall 15 to form a support element 11 having a substantially U-shaped section delimiting an internal volume V. It is characterized by its large openings provided in its bottom wall 15 to allow the introduction of the connecting reinforcements 1 more easily. and faster, without having to return the support element 11. In this figure 4 , only three openings are shown, but they are commonly distributed over the entire length of the support element 11. These openings, referred to hereinafter as main openings 17, extend between the two side walls 16, and advantageously replace the calibrated holes of prior art.
  • the connecting reinforcements 1 are dimensioned to directly receive the protruding wing 2 in the form of a U of said connecting reinforcements 1. More precisely, they have a length at least equal to and preferably slightly greater than the length d2 of the protruding wing 2 and have a width at least equal to and preferably slightly greater than the diameter of the strands 5 constituting said reinforcements.
  • the connecting reinforcements 1 can be introduced into the main openings 17 practically without friction, without effort and without noise.
  • These main openings 17 are in the example shown oriented perpendicular to the longitudinal axis A of the support element 11, without this example being limiting. They are also arranged at regular intervals I, corresponding to the interval I shown on the figures 2 and 3 , but could be arranged differently. However, the number of connecting reinforcements and their interval I per unit of length are determined by calculation according to the structural constraints and the applicable regulations.
  • the waiting box 10 further comprises a closure device 18 arranged to close the main openings 17 after the fitting of the connecting reinforcements 1, to calibrate these openings to the diameter of the strands 5 of said reinforcements, and to ensure the tightness of the waiting box 10.
  • the figures 5A and 5B schematically illustrate in an enlarged manner a section of the bottom wall 15, taken along the longitudinal axis A, showing a single main opening 17 in its width, and associated with a closure device 18, without these examples not being are limiting.
  • the figure 5A shows a closure plate 20 superimposed on the bottom wall 15 of the support member 11 via its inner face 15b, and comprising a plurality of additional openings 21 which are superimposed on the main openings 17 when the closure plate 20 is in position. open position, and offset from the main openings 17 to close them when the closure plate 20 is in the closed position.
  • this closure plate 20 is assembled with the support element 11 to be movable in translation along the longitudinal axis A relative to said support element 11.
  • the figure 5B shows the same closure plate 20 but superimposed on the bottom wall 15 by its outer face 15a.
  • closure device 18 can, where appropriate, be combined with one another in the same waiting box 10. They can also give rise to other variant embodiments not shown, but the objective of which remains the same, namely to close said main openings 17 by adapting to the diameter of the strands 5 of said reinforcements.
  • the closure plate 20 can be made in a single piece extending over the length of the support element 11, or in two, three or more pieces placed end to end to cover the length of said support element 11.
  • the figure 6 illustrates in exploded view the support element 11 and its closure plate 20 which will be superimposed as close as possible to its inner face 15b to avoid any space between them which would risk damaging the sealing of the waiting box 10.
  • the closure plate 20 is assembled to the support element 11 by a sliding connection, following a translation parallel to the longitudinal axis A, represented by the arrows T1 and T2 on the figures 7A , 9 and 10 .
  • the support element 11 comprises on the longitudinal sides of its bottom wall 15, two guide grooves 25 facing each other to receive the two longitudinal edges 26 of the closure plate 20.
  • the guide grooves 25 are for example formed by two closed longitudinal folds from the sheet of material constituting said support element 11, as shown in more detail on figure 7B .
  • the bottom wall 15 and the closure plate 20 have complementary male / female shapes helping to stiffen and improve the tightness of the waiting box 10, while participating in the guiding in translation along the longitudinal axis.
  • A such as a rail 27 provided in the bottom wall 15 and a rib 28 provided in the closure plate 20, both centered on the longitudinal axis A ( figures 6 and 7A ).
  • any other form or means of reinforcement and / or guide in translation along the longitudinal axis A of the closure plate 20 relative to the support element 11 may be suitable.
  • the closure plate 20 can also be superimposed on the bottom wall 15 of the support element 11 via its outer face 15a.
  • the complementary interlocking shapes will be different from those described and adapted to ensure the guiding of the closure plate in longitudinal translation with respect to said support element.
  • closure plate 20 When the closure plate 20 is assembled with the support member 11, as shown in figures 7A and 7B , it is moved in translation in a direction along the arrow T1 relative to the support element 11 in a so-called open position, in which its additional openings 21 are superimposed on the main openings 17 provided in the bottom wall 15, as shown to the figure 7A .
  • this open position it is possible to mount the connecting reinforcements 1 very easily and very quickly, without friction, with little effort, almost without noise, and without having to return the support element 11 since the assembly can be produced in the interior volume V of the support element 11 positioned at the location as shown in the figures.
  • the connecting reinforcements 1 are introduced one by one into the main openings 17 through the additional openings 21 by directly inserting the projecting wing 2a provided with the U-fold 3 in said openings from the inside to the outside of the element. support 11.
  • the folded wing 4 and the free strands 5 are positioned directly in the interior volume V delimited by said support element 11.
  • a support element 11 is then obtained equipped with connecting frames 1, as shown. to the figure 8 .
  • the figure 9 shows a top view of the connecting frames 1 mounted in the support element 11 and the closure plate 20 in its open position.
  • the figure 10 is a view similar to the figure 9 in which the closure plate 20 has been moved in translation in an opposite direction according to the arrow T2 from its open position to its closed position in which it closes said main openings 17 around said frames to calibrate the remaining opening as close as possible to the diameter strands 5, in order to seal said waiting box 10.
  • This movement is possible because the additional openings 21 are extended at their ends by two calibration notches 29 which extend parallel to the longitudinal axis A over a stroke C corresponding at least to the amplitude of the relative displacement of said closure plate 20.
  • These calibration notches 29 are dimensioned to grip the strands 5 of the connecting reinforcements 1 and reduce to a minimum the free space between said strands 5 and said main openings 17.
  • the figure 11 shows a waiting box 10 according to the invention which is finished and ready for use.
  • a cover 12 has been mounted to close the internal volume V of the support element 1 and to contain the folded wings 4 of the connecting frames 1 inside said volume V.
  • This cover 12 consists of a front wall 30 which covers the support element 11 over all or part of its length.
  • the front wall 30 is bordered by two longitudinal flanges 31 arranged to fit in force in the housings 32 provided in the side walls 16 and formed by folding said walls ( figures 7B and 13 ).
  • the cover 12 further comprises a median fold 33 substantially centered on the longitudinal axis A and arranged to give said cover 12 flexibility favoring both its assembly and its disassembly.
  • cover 12 any other form of cover 12 and any other method of assembling the cover 12 on the support element 11 can be envisaged, the main thing being that the cover 12 seals the waiting box 10 while at the same time. which can be easily removed on site to access the strands 5 of the connecting reinforcements 1, with a view to carrying out the second phase of concreting.
  • At least one of the closure parts 13 may consist of a magnetic pad provided for example with one or more permanent magnets embedded in a synthetic material and configured to fit into one of the ends of the 'support element 11, for example in the extension of the cover 12.
  • the cover 12 has a length less than that of the support element 11 to release the corresponding end.
  • This magnetic pad allows the waiting box 10 to be fixed very simply by magnetization on formwork elements when they are metallic.
  • the other closure piece 14 may consist of a neutral pad made of a synthetic material, for example an expanded foam, and configured to fit into the other end of the support element 11 between the plate. closure 20 and cover 12.
  • closure members 13, 14 are not limiting, neither in their form, nor in their composition and nor in their arrangement, and extend to any other variant embodiment, with or without a permanent magnet in function of the nature of the formwork elements, integrated or in the extension of said waiting box 10. It is also possible to provide a magnetic pad in each closure part or no magnetic pad.
  • the figure 14 further illustrates a feature of the closure plate 20 in which the additional openings 21 can receive, just like the main openings 17 provided in the support element 11, connecting reinforcements 1 made up of strands 5 of different diameters.
  • a universal waiting box 10 is obtained at least for a range of diameters of connecting reinforcements 1, making it possible to reduce the number of models to be manufactured and to be kept in stock.
  • the calibration notches 29 are conical and connected to the additional openings 21 by a flared entry corresponding to the base of the cone, so that the calibration notch 29 can accept different diameters of strands 5 of the connecting reinforcements 1. It can accept both small diameter 5 'strands which will fit into the bottom of the notch at the top of the cone, as well as large diameter 5' strands which will fit midway in the notch between the cone. base and top of the cone.
  • the waiting box 10 can be produced by any known manufacturing process and in any material suitable for the constraints linked to its use as well as to its mode of use.
  • the support member 11 can be made of a metallic material, such as steel, from a stamped sheet, bent and cut to the desired length. It can also be made in a synthetic or composite material, from an extruded or molded sheet.
  • the closure device 18 may be made of a metallic material, a material synthetic or a composite material, from a sheet or a stamped sheet, folded and cut to the desired length.
  • the cover 12 can be made of a synthetic material or a composite material, from a sheet extruded and cut to the desired length.
  • the various constituent parts of the waiting box 10 and intended to be in contact with the concrete may include a structured surface to improve adhesion with the concrete.
  • the waiting box 10 meets the objectives set, namely that its new design makes it possible to very easily and very quickly introduce the connecting frames 1 into the main openings 17 reducing the necessary physical effort, and the noise induced, thus making it possible to increase the production of waiting boxes 10, while improving the ergonomics of the workstation.
  • the waiting box 10 no longer needs to be turned over during assembly, which further reduces production time. It is also possible to reduce the number of waiting boxes in stock, since the closing of the main openings 17 and their calibration are carried out at the end of assembly by the sealing device 18, making it possible to put a single one into production. waiting box model for a determined range of connecting reinforcement diameters 1.
  • the production process of the waiting boxes 10 being optimized, it can be more easily automated.
  • the present invention is not limited to the embodiments described but extends to any modification and variant obvious to a person skilled in the art.
  • the shape of the waiting box as well as the materials from which it is made have no limiting effect on the subject of the invention.
  • the shape and material of the connecting reinforcements have no limiting effect on the subject of the invention.

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Mechanical Engineering (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Specific Sealing Or Ventilating Devices For Doors And Windows (AREA)
  • Conveying And Assembling Of Building Elements In Situ (AREA)
  • Reinforcement Elements For Buildings (AREA)
  • Cartons (AREA)

Description

Domaine technique : Technical area :

La présente invention concerne une boite d'attente pour recevoir des armatures de liaison en attente, appelée communément « boite d'attente », comportant un élément de support constitué d'une paroi de fond s'étendant selon un axe longitudinal et bordée par deux parois latérales parallèles audit axe longitudinal, ledit élément de support étant agencé pour recevoir une pluralité d'armatures de liaison dont une aile saillante qui traverse ladite paroi de fond, et une aile pliée qui se loge à l'intérieur dudit élément de support entre les deux parois latérales, un couvercle agencé pour s'étendre parallèlement à ladite paroi de fond, pour fermer ledit élément de support et pour contenir l'aile pliée desdites armatures dans le volume intérieur dudit élément de support, et deux pièces d'obturation agencées pour fermer les extrémités dudit élément de support et pour assurer l'étanchéité de ladite boite d'attente, ladite paroi de fond comportant une pluralité d'ouvertures principales s'étendant entre les deux parois latérales dudit élément de support, et agencées pour permettre l'introduction de l'aile saillante desdites armatures de liaison, et ladite boite d'attente comportant en outre un dispositif d'obturation agencé pour fermer lesdites ouvertures principales après la pose desdites armatures de liaison et pour assurer l'étanchéité de ladite boite d'attente.The present invention relates to a waiting box for receiving waiting connecting reinforcements, commonly called a “waiting box”, comprising a support element consisting of a bottom wall extending along a longitudinal axis and bordered by two. side walls parallel to said longitudinal axis, said support element being arranged to receive a plurality of connecting frames including a protruding wing which passes through said bottom wall, and a folded wing which is housed inside said support element between the two side walls, a cover arranged to extend parallel to said bottom wall, to close said support member and to contain the folded wing of said frames in the interior volume of said support member, and two closure pieces arranged to close the ends of said support member and to seal said waiting box, said bottom wall comprising a plurality of main openings extending between the two side walls of said support element, and arranged to allow the introduction of the protruding wing of said connecting frames, and said waiting box further comprising a closure device arranged to close said main openings after installation of said connecting reinforcements and to ensure the sealing of said waiting box.

La présente invention concerne également un procédé de montage d'armatures de liaison en attente dans ladite boite d'attente.The present invention also relates to a method of mounting connecting reinforcements waiting in said waiting box.

Technique antérieure : Prior technique :

Les boites d'attente de ce type conçues pour recevoir des armatures de liaison en attente sont bien connues dans le domaine de la construction, et en particulier dans la construction d'ouvrages et de bâtiments en béton armé. Elles sont couramment utilisées pour pouvoir liaisonner par des armatures de liaison métalliques, deux éléments de construction réalisés au cours de deux phases de bétonnage, par exemple un mur et une dalle. Il existe à ce jour deux types de boite d'attente : des boites d'attente qui sont destinées à rester au moins en partie dans l'ouvrage et des boites d'attente qui sont retirées de l'ouvrage avant la deuxième phase de bétonnage. Selon leur utilisation, les boites d'attente peuvent être majoritairement réalisées en matières métalliques, telles que l'acier, dont un exemple est décrit dans la publication FR 3 018 839 B1 , ou en matières synthétiques ou composites, dont un exemple est décrit dans la publication FR 2 796 095 B1 La boîte d'attente de DE29916011U1 décrit les caractéristiques techniques du préambule de la revendication 1.Waiting boxes of this type designed to receive waiting connecting reinforcements are well known in the construction field, and in particular in the construction of reinforced concrete structures and buildings. They are commonly used to be able to link, by means of metal connecting reinforcements, two construction elements produced during two phases of concreting, for example a wall and a slab. To date, there are two types of waiting boxes: waiting boxes which are intended to remain at least partly in the structure and waiting boxes which are removed from the structure before the second phase of concreting. . Depending on their use, the waiting boxes can mainly be made of metallic materials, such as steel, an example of which is described in the publication. FR 3 018 839 B1 , or in synthetic or composite materials, an example of which is described in the publication FR 2 796 095 B1 The waiting box of DE29916011U1 describes the technical characteristics of the preamble of claim 1.

Les armatures de liaison en général sont constituées d'un élément filaire métallique, tel qu'une tige, une barre, ou similaire réalisée par exemple en acier, et pourvue d'un crantage, d'un rainurage, ou similaire pour augmenter la surface d'adhérence entre l'acier et le béton. Les armatures de liaison 1 destinées à être en attente sont la plupart du temps pliées pour former un U, puis pliées sensiblement à angle droit pour former une équerre, telle que représentée à la figure 1. L'armature de liaison 1 en forme d'équerre comporte ainsi une première aile 2 formée par le pli en U 3, destinée à être saillante à l'extérieur de la boite d'attente pour être noyée dans le béton d'une première phase de bétonnage, et une seconde aile 4 formée par les deux brins libres 5 dans le prolongement du pli en U 3, logée dans la boite d'attente. Bien entendu, l'exemple décrit et illustré n'est pas limitatif et s'étend à toute autre forme d'armatures de liaison équivalente.The connecting reinforcements in general consist of a metallic wire element, such as a rod, a bar, or the like made for example of steel, and provided with a notch, a groove, or the like to increase the surface. bond between steel and concrete. The connecting reinforcements 1 intended to be on standby are most of the time bent to form a U, then bent substantially at right angles to form a square, as shown in figure 1 . The square-shaped connecting frame 1 thus comprises a first wing 2 formed by the U-bend 3, intended to protrude outside the waiting box to be embedded in the concrete of a first phase. concrete, and a second wing 4 formed by the two free strands 5 in the extension of the U-fold 3, housed in the waiting box. Of course, the example described and illustrated is not limiting and extends to any other form of equivalent connecting reinforcements.

Les boites d'attente connues comportent dans leur paroi de fond une pluralité de couples de trous calibrés pour recevoir les deux brins libres de chaque armature de liaison, qui sont introduits dans ces trous calibrés de l'extérieur vers l'intérieur de l'élément de support, puis rabattus dans l'ordre à l'intérieur de l'élément de support, avant de mettre en place le couvercle pour fermer la boite. Etant donné que la boite d'attente doit être étanche au béton et notamment à la laitance du béton en phase de bétonnage, les trous prévus dans la paroi de fond sont calibrés au diamètre des brins des armatures de liaison pour éviter ainsi toute pénétration de laitance. Cette contrainte pose de nombreux inconvénients aussi bien lors de la fabrication des boites que lors du montage des armatures dans ces boites. En effet, les trous calibrés imposent de réaliser un modèle de boites d'attente pour chaque diamètre d'armatures de liaison, ce qui multiplie les stocks et complexifie la production et la gestion des boites d'attente, ces surcouts se répercutant sur le prix du produit.Known waiting boxes have in their bottom wall a plurality of pairs of calibrated holes to receive the two free strands of each connecting frame, which are introduced into these calibrated holes from the outside to the inside of the element. support, then folded back in order inside the support element, before putting on the cover to close the box. Given that the waiting box must be sealed against concrete and in particular against laitance of the concrete during the concreting phase, the holes provided in the bottom wall are calibrated to the diameter of the strands of the connecting reinforcements to avoid any penetration of laitance. . This constraint poses numerous drawbacks both during the manufacture of the boxes and during the assembly of the reinforcements in these boxes. Indeed, the calibrated holes make it necessary to produce a model of waiting boxes for each diameter of connecting reinforcement, which increases stocks and complicates the production and management of waiting boxes, these additional costs having an impact on the price. of the product.

D'autre part, les armatures de liaison 1 montées dans la boite d'attente doivent être organisées en épi, comme représenté dans les figures 2 et 3, étant donné que la longueur des brins libres 5 est souvent supérieure à l'intervalle I entre deux armatures consécutives, et qu'il n'est pas possible de superposer les brins libres 5 pour ne pas augmenter l'épaisseur de la boite. Cette contrainte de montage impose de façonner les armatures de liaison 1 de sorte que la distance dl entre les extrémités des brins libres 5 soit inférieure à la distance d2 entre les deux brins à l'angle de l'équerre entre l'aile saillante 2 et l'aile pliée 4. Ceci impose les phases de montage suivantes :

  • Positionner l'élément de support à l'envers pour que la face extérieure de sa paroi de fond soit au-dessus,
  • Ecarter les extrémités des deux brins libres 5 de la distance dl pour les insérer dans les trous correspondants écartés de la distance d2,
  • Retourner l'élément de support à l'endroit pour rabattre les brins libres 5 à l'intérieur,
  • Ranger les brins libres 5 en épi pour éviter les superpositions,
  • Mettre en place le couvercle, cercler et boucher les extrémités de la boite d'attente obtenue.
On the other hand, the connecting reinforcements 1 mounted in the waiting box must be organized in a herringbone pattern, as shown in the figures 2 and 3 , given that the length of the free strands 5 is often greater than the interval I between two consecutive reinforcements, and that it is not possible to superimpose the free strands 5 so as not to increase the thickness of the box. This mounting constraint requires shaping the connecting reinforcements 1 so that the distance dl between the ends of the free strands 5 is less than the distance d2 between the two strands at the angle of the square between the projecting flange 2 and the wing folded 4. This requires the following assembly phases:
  • Position the support element upside down so that the outer face of its bottom wall is above,
  • Separate the ends of the two free strands 5 by the distance dl to insert them into the corresponding holes spaced by the distance d2,
  • Turn the support element right side up to fold the free ends 5 inside,
  • Arrange the free ends 5 on the cob to avoid overlapping,
  • Put on the cover, circle and plug the ends of the waiting box obtained.

Ces opérations sont répétitives et fastidieuses. Elles demandent aux opérateurs des efforts importants et peuvent générer des nuisances sonores liées au frottement acier/acier lors de l'insertion des armatures de liaison. En outre, le montage des boites d'attente actuelles est consommateur de temps, et le procédé de montage actuel est pratiquement impossible à automatiser.These operations are repetitive and tedious. They require significant efforts from operators and can generate noise pollution related to friction. steel / steel when inserting the connecting reinforcement. Furthermore, the assembly of current waiting boxes is time consuming, and the current assembly process is practically impossible to automate.

Il existe d'autres types de boite d'attente permettant en partie de résoudre les problèmes évoqués ci-dessus. La publication CH 666 931 décrit une boite d'attente comportant des fentes oblongues transversales dans sa paroi de fond permettant d'insérer plus facilement les armatures, chaque fente oblongue étant fermée par une pièce rapportée, emboitée et clippée entre les deux brins traversants de chaque armature. La publication DE 299 16 011 U1 décrit une boite d'attente comportant des demi-fentes et une plaque d'obturation logée à l'intérieur de la boite, pourvue de demi-fentes disposées en opposition aux précédentes pour les fermer autour du brin traversant de chaque armature en forme de crosse. Cette solution ne s'applique pas aux armatures pliées en U.There are other types of waiting boxes that partly resolve the problems mentioned above. The publication CH 666 931 describes a waiting box comprising transverse oblong slots in its bottom wall making it possible to insert the frames more easily, each oblong slot being closed by an attached piece, fitted and clipped between the two through strands of each frame. The publication DE 299 16 011 U1 describes a waiting box comprising half-slits and a closing plate housed inside the box, provided with half-slits arranged in opposition to the previous ones to close them around the through strand of each bracket-shaped frame . This solution does not apply to U-bent reinforcement.

Exposé de l'invention :Disclosure of the invention:

La présente invention vise à pallier ces inconvénients en proposant une boite d'attente dite universelle, c'est-à-dire compatible avec plusieurs modes d'utilisation et avec plusieurs types et diamètres d'armatures de liaison, permettant ainsi de réduire le nombre de modèles à fabriquer. Elle vise également à offrir une simplicité et une rapidité de montage des armatures, sans pièce rapportée pouvant être égarée ou perdue, permettant ainsi de réduire sensiblement les efforts à fournir par les opérateurs et implicitement les nuisances sonores engendrées, et donc à améliorer l'ergonomie de travail et la cadence de production. Elle vise en outre à ouvrir des possibilités d'automatisation de la production.The present invention aims to overcome these drawbacks by proposing a so-called universal waiting box, that is to say compatible with several modes of use and with several types and diameters of connecting reinforcements, thus making it possible to reduce the number of models to manufacture. It also aims to offer simplicity and rapidity of fitting the fittings, without any attached part that could be lost or lost, thus making it possible to significantly reduce the efforts to be provided by the operators and implicitly the noise pollution generated, and therefore to improve ergonomics. of work and the rate of production. It also aims to open up possibilities for the automation of production.

Dans ce but, l'invention concerne une boite d'attente du genre indiqué en préambule, caractérisée en ce que ledit dispositif d'obturation comporte au moins une plaque de fermeture superposée à la paroi de fond dudit élément de support, pourvue d'une pluralité d'ouvertures additionnelles pour le passage desdites armatures de liaison, ladite plaque de fermeture étant mobile en translation longitudinale par rapport audit élément de support entre une position ouverte dans laquelle lesdites ouvertures additionnelles sont superposées auxdits ouvertures principales et autorisent l'introduction desdites armatures de liaison, et une position fermée dans laquelle lesdites ouvertures additionnelles sont décalées et ferment lesdites ouvertures principales.For this purpose, the invention relates to a waiting box of the type indicated in the preamble, characterized in that said closure device comprises at least one closure plate superimposed on the bottom wall of said support element, provided with a plurality of additional openings for the passage of said connecting reinforcements, said closing plate being movable in longitudinal translation with respect to said support element between an open position in which said additional openings are superimposed on said main openings and allow the introduction of said reinforcements of connection, and a closed position in which said additional openings are offset and close said main openings.

Dans une forme préférée de l'invention, lesdites ouvertures principales et lesdites ouvertures additionnelles présentent une forme sensiblement oblongue, sont disposées à intervalle régulier, et s'étendent perpendiculairement à l'axe longitudinal dudit élément de support.In a preferred form of the invention, said main openings and said additional openings have a substantially oblong shape, are arranged at regular intervals, and extend perpendicularly to the longitudinal axis of said support element.

Lesdites ouvertures additionnelles peuvent être avantageusement prolongées à leurs extrémités par des encoches de calibrage s'étendant parallèlement à l'axe longitudinal dudit élément de support et agencées pour enserrer lesdites armatures de liaison lorsque ladite plaque de fermeture est en position fermée. Lesdites encoches de calibrage peuvent en outre avoir une forme conique agencée pour admettre différents diamètres d'armatures de liaison.Said additional openings can advantageously be extended at their ends by calibration notches extending parallel to the longitudinal axis of said support element and arranged to grip said connecting reinforcements when said closure plate is in the closed position. Said calibration notches may also have a conical shape arranged to admit different diameters of connecting reinforcements.

Selon les variantes de réalisation de l'invention, ladite plaque de fermeture peut être superposée à la paroi de fond soit par sa face intérieure, soit par sa face extérieure.According to the variant embodiments of the invention, said closure plate can be superimposed on the bottom wall either by its inner face or by its outer face.

En outre, ladite plaque de fermeture et ledit élément support peuvent comporter avantageusement des formes d'emboitement complémentaires agencées pour guider ladite plaque de fermeture en translation longitudinale par rapport audit élément support.In addition, said closure plate and said support element may advantageously comprise complementary interlocking shapes arranged to guide said closure plate in longitudinal translation with respect to said support element.

Dans d'autres variantes de réalisation, ladite plaque de fermeture peut être constituée d'une seule pièce ou d'au moins deux pièces mises bout à bout.In other variant embodiments, said closure plate may consist of a single piece or of at least two pieces placed end to end.

Dans ce but également, l'invention concerne un procédé de montage d'armatures de liaison en attente dans une boite d'attente, caractérisé en ce que l'on utilise une boite d'attente telle que définie ci-dessus, dans laquelle ledit dispositif d'obturation comporte au moins une plaque de fermeture superposée à la paroi de fond dudit élément de support, pourvue d'une pluralité d'ouvertures additionnelles pour le passage desdites armatures de liaison, ladite plaque de fermeture étant mobile en translation longitudinale par rapport audit élément de support entre une position ouverte dans laquelle lesdites ouvertures additionnelles sont superposées auxdites ouvertures principales et autorisent l'introduction desdites armatures de liaison, et une position fermée dans laquelle lesdites ouvertures additionnelles sont décalées et ferment lesdites ouvertures principales, en ce que, pour monter lesdites armatures de liaison dans ledit élément de support, l'on positionne ladite plaque de fermeture dans la position ouverte, et l'on introduit l'aile saillante de chacune des armatures de liaison dans une des ouvertures principales au travers de l'ouverture additionnelle superposée qui lui correspond en se plaçant du côté du volume intérieur de l'élément de support pour que ladite aile saillante traverse ladite paroi de fond et ladite plaque de fermeture de l'intérieur vers l'extérieur de ladite boite d'attente, et en ce que, après le montage desdites armatures de liaison, on déplace ladite plaque de fermeture en translation de la position ouverte à la position fermée dans laquelle elle ferme lesdites ouvertures principales autour desdites armatures de liaison pour rendre la boite d'attente étanche.With this aim also, the invention relates to a method of mounting connecting reinforcements waiting in a waiting box, characterized in that one uses a waiting box as defined above, in which said closure device comprises at least one closure plate superimposed on the bottom wall of said support element, provided with a plurality of additional openings for the passage of said connecting frames, said closure plate being movable in longitudinal translation with respect to said support member between an open position in which said additional openings are superimposed on said main openings and allow the introduction of said connecting frames, and a closed position in which said additional openings are offset and close said main openings, in that, for mounting said connecting frames in said support member, positioning said closure plate d in the open position, and the protruding wing of each of the connecting reinforcements is introduced into one of the main openings through the additional superimposed opening which corresponds to it by placing the side of the interior volume of the support element so that said protruding wing passes through said bottom wall and said closing plate from the inside to the outside of said waiting box, and in that, after the assembly of said connecting frames, said closing plate is moved in translation from the open position to the closed position in which it closes said main openings around said connecting frames to make the waiting box watertight.

Avantageusement, l'on utilise une plaque de fermeture dans laquelle lesdites ouvertures additionnelles sont prolongées à leurs extrémités par des encoches de calibrage s'étendant parallèlement à l'axe longitudinal dudit élément de support pour enserrer lesdites armatures de liaison lorsque ladite plaque de fermeture est en position fermée.Advantageously, a closure plate is used in which said additional openings are extended at their ends by calibration notches extending parallel to the longitudinal axis of said support element in order to grip said connecting frames when said closure plate is in closed position.

Ainsi, et préférentiellement, l'on peut utiliser un même modèle de boite d'attente pour plusieurs diamètres de brins desdites armatures de liaison, et l'on peut effectuer le calibrage desdites ouvertures principales après le montage desdites armatures de liaison au moyen dudit dispositif d'obturation. A cet effet, l'on prévoit que lesdites encoches de calibrage ont une forme conique pour admettre différents diamètres des brins constituant lesdites armatures de liaison.Thus, and preferably, one can use the same model of waiting box for several diameters of strands of said connecting reinforcements, and it is possible to calibrate said main openings after mounting said connecting reinforcements by means of said device. shutter. For this purpose, provision is made for said calibration notches to have a conical shape to allow different diameters of the strands constituting said connecting reinforcements.

L'on peut en outre avantageusement automatiser le montage desdites armatures de liaison dans ledit élément de support et la fermeture de ladite boite d'attente.It is also advantageously possible to automate the assembly of said connecting reinforcements in said support element and the closing of said waiting box.

Description sommaire des dessins : Brief description of the drawings :

La présente invention et ses avantages apparaîtront mieux dans la description suivante de plusieurs modes de réalisation donnés à titre d'exemples non limitatifs, en référence aux dessins annexés, dans lesquels:

  • la figure 1 est une vue en perspective d'un exemple d'une armature de liaison de l'invention concernée par l'invention,
  • les figures 2 et 3 sont des vues respectivement en perspective et de dessus montrant une pluralité d'armatures de liaison selon la figure 1 assemblées l'une dans l'autre en épi,
  • la figure 4 est une vue schématique en perspective d'un élément de support d'une boite d'attente selon l'invention, pourvu d'une pluralité d'ouvertures principales de forme oblongue,
  • les figures 5A et 5B illustrent deux variantes d'une forme de réalisation d'un dispositif d'obturation des ouvertures principales de l'élément de support selon la figure 4,
  • la figure 6 est une vue éclatée en perspective d'un élément de support et d'un dispositif d'obturation selon la figure 5A, superposé et pourvu d'ouvertures additionnelles,
  • la figure 7A est une vue de dessus de l'élément de support et du dispositif d'obturation de la figure 6 assemblés, le dispositif d'obturation étant en position ouverte, et la figure 7B est une vue de côté partielle et agrandie de l'assemblage de la figure 7A,
  • la figure 8 est une vue en perspective de l'élément de support et du dispositif d'obturation de la figure 7A après montage des armatures de liaison,
  • les figures 9 et 10 sont des vues de dessus de l'assemblage de la figure 8, montrant le dispositif d'obturation respectivement en position ouverte et en position fermée,
  • la figure 11 est une vue en perspective de la boite d'attente finie, étanche, et prête à être posée,
  • la figure 12 est une vue de détail d'une des extrémités de la boite d'attente de la figure 11 montrant la mise en place d'une pièce d'obturation,
  • la figure 13 est une vue en coupe de la boite d'attente de la figure 11, et
  • la figure 14 est une vue agrandie d'un détail d'une ouverture additionnelle prévue dans le dispositif d'obturation des figures 6, 7A et 8 à 10 montrant deux diamètres différents d'armatures de liaison.
The present invention and its advantages will appear better in the following description of several embodiments given by way of non-limiting examples, with reference to the appended drawings, in which:
  • the figure 1 is a perspective view of an example of a connecting reinforcement of the invention concerned by the invention,
  • the figures 2 and 3 are respectively perspective and top views showing a plurality of connecting reinforcements according to the figure 1 assembled one inside the other on the cob,
  • the figure 4 is a schematic perspective view of a support element of a waiting box according to the invention, provided with a plurality of main openings of oblong shape,
  • the figures 5A and 5B illustrate two variants of an embodiment of a device for closing the main openings of the support element according to figure 4 ,
  • the figure 6 is an exploded perspective view of a support member and a closure device according to figure 5A , superimposed and provided with additional openings,
  • the figure 7A is a top view of the support element and the closure device of the figure 6 assembled, the closure device being in the open position, and the figure 7B is a partial and enlarged side view of the assembly of the figure 7A ,
  • the figure 8 is a perspective view of the support element and the closure device of the figure 7A after assembly of the connecting reinforcements,
  • the figures 9 and 10 are top views of the assembly of the figure 8 , showing the closure device respectively in the open position and in the closed position,
  • the figure 11 is a perspective view of the finished, watertight, ready-to-install waiting box,
  • the figure 12 is a detail view of one end of the waiting box of the figure 11 showing the placement of a shutter,
  • the figure 13 is a sectional view of the waiting box of the figure 11 , and
  • the figure 14 is an enlarged view of a detail of an additional opening provided in the closure device of the figures 6, 7A and 8 to 10 showing two different diameters of connecting reinforcement.

Illustrations de l'invention et différentes manières de la réaliser :Illustrations of the invention and different ways of carrying it out:

Dans les exemples de réalisation illustrés, les éléments ou parties identiques portent les mêmes numéros de référence.In the exemplary embodiments illustrated, the identical elements or parts bear the same reference numbers.

Les figures 1 à 3 illustrent un exemple d'armatures de liaison 1 connues et compatibles avec la boite d'attente 10 selon l'invention. La description de ces figures se trouve dans la partie « état de la technique » et ne sera pas reprise ici.The figures 1 to 3 illustrate an example of connecting reinforcements 1 known and compatible with the waiting box 10 according to the invention. The description of these figures can be found in the “state of the art” part and will not be repeated here.

La boite d'attente 10 selon l'invention est illustrée schématiquement et partiellement dans les figures 4 et 5, et de matière plus détaillée en référence à un exemple de réalisation préféré dans les figures 6 à 14. Elle comporte de manière connue un élément de support 11 recevant les armatures de liaison 1, un couvercle 12 et des pièces d'obturation 13 et 14 pour fermer la boite d'attente 10 afin de la rendre étanche, notamment à la laitance du béton.The waiting box 10 according to the invention is illustrated schematically and partially in the figures 4 and 5 , and of more detailed material with reference to an exemplary embodiment preferred in the figures 6 to 14 . It comprises in a known manner a support element 11 receiving the connecting reinforcements 1, a cover 12 and sealing pieces 13 and 14 for closing the waiting box 10 in order to make it watertight, in particular to the laitance of the concrete.

Plus particulièrement en référence à la figure 4, l'élément de support 11 selon l'invention est constitué d'une paroi de fond 15 s'étendant selon un axe longitudinal A et de deux parois latérales 16 s'étendant parallèlement à l'axe longitudinal A et bordant la paroi de fond 15 pour former un élément de support 11 ayant une section sensiblement en forme de U délimitant un volume intérieur V. Il se caractérise par ses grandes ouvertures prévues dans sa paroi de fond 15 pour permettre l'introduction des armatures de liaison 1 de manière plus facile et plus rapide, sans devoir retourner l'élément de support 11. Dans cette figure 4, seules trois ouvertures sont représentées, mais elles sont communément réparties sur toute la longueur de l'élément de support 11. Ces ouvertures appelées par la suite ouvertures principales 17 s'étendent entre les deux parois latérales 16, et remplacent avantageusement les trous calibrés de l'art antérieur. Elles sont dimensionnées pour recevoir directement l'aile saillante 2 en forme de U desdites armatures de liaison 1. Plus précisément, elles ont une longueur au moins égale et de préférence légèrement supérieure à la longueur d2 de l'aile saillante 2 et ont une largeur au moins égale et de préférence légèrement supérieure au diamètre des brins 5 constituant lesdites armatures. Ainsi, les armatures de liaison 1 peuvent être introduites dans les ouvertures principales 17 pratiquement sans frottement, sans effort et sans bruit.More particularly with reference to the figure 4 , the support element 11 according to the invention consists of a bottom wall 15 extending along a longitudinal axis A and two side walls 16 extending parallel to the longitudinal axis A and bordering the bottom wall 15 to form a support element 11 having a substantially U-shaped section delimiting an internal volume V. It is characterized by its large openings provided in its bottom wall 15 to allow the introduction of the connecting reinforcements 1 more easily. and faster, without having to return the support element 11. In this figure 4 , only three openings are shown, but they are commonly distributed over the entire length of the support element 11. These openings, referred to hereinafter as main openings 17, extend between the two side walls 16, and advantageously replace the calibrated holes of prior art. They are dimensioned to directly receive the protruding wing 2 in the form of a U of said connecting reinforcements 1. More precisely, they have a length at least equal to and preferably slightly greater than the length d2 of the protruding wing 2 and have a width at least equal to and preferably slightly greater than the diameter of the strands 5 constituting said reinforcements. Thus, the connecting reinforcements 1 can be introduced into the main openings 17 practically without friction, without effort and without noise.

Ces ouvertures principales 17 sont dans l'exemple représenté orientées perpendiculairement à l'axe longitudinal A de l'élément de support 11, sans que cet exemple ne soit limitatif. Elles sont également disposées à intervalle I régulier, correspondant à l'intervalle I représenté sur les figures 2 et 3, mais pourraient être disposées différemment. Toutefois, le nombre d'armatures de liaison et leur intervalle I par unité de longueur sont déterminés par calcul en fonction des contraintes de structure et de la réglementation applicable.These main openings 17 are in the example shown oriented perpendicular to the longitudinal axis A of the support element 11, without this example being limiting. They are also arranged at regular intervals I, corresponding to the interval I shown on the figures 2 and 3 , but could be arranged differently. However, the number of connecting reinforcements and their interval I per unit of length are determined by calculation according to the structural constraints and the applicable regulations.

La boite d'attente 10 selon l'invention comporte en outre un dispositif d'obturation 18 agencé pour fermer les ouvertures principales 17 après la pose des armatures de liaison 1, pour calibrer ces ouvertures au diamètre des brins 5 desdites armatures, et pour assurer l'étanchéité de la boite d'attente 10. Les figures 5A et 5B illustrent schématiquement et de manière agrandie une section de la paroi de fond 15, prise le long de l'axe longitudinal A, montrant une seule ouverture principale 17 dans sa largeur, et associée à un dispositif d'obturation 18, sans que ces exemples ne soient limitatifs.The waiting box 10 according to the invention further comprises a closure device 18 arranged to close the main openings 17 after the fitting of the connecting reinforcements 1, to calibrate these openings to the diameter of the strands 5 of said reinforcements, and to ensure the tightness of the waiting box 10. The figures 5A and 5B schematically illustrate in an enlarged manner a section of the bottom wall 15, taken along the longitudinal axis A, showing a single main opening 17 in its width, and associated with a closure device 18, without these examples not being are limiting.

La figure 5A montre une plaque de fermeture 20 superposée à la paroi de fond 15 de l'élément de support 11 par sa face intérieure 15b, et comportant une pluralité d'ouvertures additionnelles 21 qui sont superposées aux ouvertures principales 17 lorsque la plaque de fermeture 20 est en position ouverte, et décalées par rapport aux ouvertures principales 17 pour les obturer lorsque la plaque de fermeture 20 est en position fermée. A cet effet, cette plaque de fermeture 20 est assemblée à l'élément de support 11 pour être mobile en translation selon l'axe longitudinal A par rapport audit élément de support 11. La figure 5B montre la même plaque de fermeture 20 mais superposée à la paroi de fond 15 par sa face extérieure 15a.The figure 5A shows a closure plate 20 superimposed on the bottom wall 15 of the support member 11 via its inner face 15b, and comprising a plurality of additional openings 21 which are superimposed on the main openings 17 when the closure plate 20 is in position. open position, and offset from the main openings 17 to close them when the closure plate 20 is in the closed position. To this end, this closure plate 20 is assembled with the support element 11 to be movable in translation along the longitudinal axis A relative to said support element 11. The figure 5B shows the same closure plate 20 but superimposed on the bottom wall 15 by its outer face 15a.

Les différents modes de réalisation du dispositif d'obturation 18 qui viennent d'être décrits peuvent le cas échéant être combinés entre eux dans une même boite d'attente 10. Ils peuvent également donner lieu à d'autres variantes de réalisation non représentées, mais dont l'objectif reste le même à savoir obturer lesdites ouvertures principales 17 en s'adaptant au diamètre des brins 5 desdites armatures. Notamment, la plaque de fermeture 20 peut être réalisée en une seule pièce s'étendant sur la longueur de l'élément de support 11, ou en deux, trois ou plusieurs pièces mises bout à bout pour couvrir la longueur dudit élément de support 11.The various embodiments of the closure device 18 which have just been described can, where appropriate, be combined with one another in the same waiting box 10. They can also give rise to other variant embodiments not shown, but the objective of which remains the same, namely to close said main openings 17 by adapting to the diameter of the strands 5 of said reinforcements. In particular, the closure plate 20 can be made in a single piece extending over the length of the support element 11, or in two, three or more pieces placed end to end to cover the length of said support element 11.

Le procédé de montage d'une pluralité d'armatures de liaison 1, selon la figure 1, dans une boite d'attente 10 selon l'invention est décrit à présent en référence aux figures 6 à 14 et avec le mode de réalisation du dispositif d'obturation illustré à la figure 5A.The method of mounting a plurality of connecting frames 1, according to figure 1 , in a waiting box 10 according to the invention is now described with reference to figures 6 to 14 and with the embodiment of the closure device illustrated in figure 5A .

La figure 6 illustre en vue éclatée l'élément de support 11 et sa plaque de fermeture 20 qui viendra se superposer au plus près de sa face intérieure 15b pour éviter tout espace entre eux qui risquerait de nuire à l'étanchéité de la boite d'attente 10. Dans l'exemple représenté, la plaque de fermeture 20 est assemblée à l'élément de support 11 par une liaison coulissante, suivant une translation parallèle à l'axe longitudinal A, représentée par les flèches T1 et T2 sur les figures 7A, 9 et 10. Dans l'exemple représenté, l'élément de support 11 comporte sur les côtés longitudinaux de sa paroi de fond 15, deux rainures de guidage 25 se faisant face pour recevoir les deux bords longitudinaux 26 de la plaque de fermeture 20. Les rainures de guidage 25 sont par exemple formées par deux plis fermés longitudinaux issus de la feuille de matière constituant ledit élément de support 11, comme représenté plus en détail à la figure 7B. En outre, la paroi de fond 15 et la plaque de fermeture 20 comportent des formes mâles/femelles complémentaires contribuant à rigidifier et à améliorer l'étanchéité de la boite d'attente 10, tout en participant au guidage en translation selon l'axe longitudinal A, telles qu'un rail 27 prévu dans la paroi de fond 15 et une nervure 28 prévue dans la plaque de fermeture 20, tous deux centrés sur l'axe longitudinal A (figures 6 et 7A). Bien entendu, tout autre forme ou moyen de renfort et/ou de guidage en translation selon l'axe longitudinal A de la plaque de fermeture 20 par rapport à l'élément de support 11 peut convenir. De même et comme représenté à la figure 5B, la plaque de fermeture 20 peut également être superposée à la paroi de fond 15 de l'élément de support 11 par sa face extérieure 15a. Dans ce cas, les formes d'emboitement complémentaires seront différentes de celles décrites et adaptées pour assurer le guidage la plaque de fermeture en translation longitudinale par rapport audit élément support.The figure 6 illustrates in exploded view the support element 11 and its closure plate 20 which will be superimposed as close as possible to its inner face 15b to avoid any space between them which would risk damaging the sealing of the waiting box 10. In the example shown, the closure plate 20 is assembled to the support element 11 by a sliding connection, following a translation parallel to the longitudinal axis A, represented by the arrows T1 and T2 on the figures 7A , 9 and 10 . In the example shown, the support element 11 comprises on the longitudinal sides of its bottom wall 15, two guide grooves 25 facing each other to receive the two longitudinal edges 26 of the closure plate 20. The guide grooves 25 are for example formed by two closed longitudinal folds from the sheet of material constituting said support element 11, as shown in more detail on figure 7B . In addition, the bottom wall 15 and the closure plate 20 have complementary male / female shapes helping to stiffen and improve the tightness of the waiting box 10, while participating in the guiding in translation along the longitudinal axis. A, such as a rail 27 provided in the bottom wall 15 and a rib 28 provided in the closure plate 20, both centered on the longitudinal axis A ( figures 6 and 7A ). Of course, any other form or means of reinforcement and / or guide in translation along the longitudinal axis A of the closure plate 20 relative to the support element 11 may be suitable. Likewise and as shown in figure 5B , the closure plate 20 can also be superimposed on the bottom wall 15 of the support element 11 via its outer face 15a. In this case, the complementary interlocking shapes will be different from those described and adapted to ensure the guiding of the closure plate in longitudinal translation with respect to said support element.

Lorsque la plaque de fermeture 20 est assemblée à l'élément de support 11, comme représenté dans les figures 7A et 7B, on la déplace en translation dans une direction selon la flèche T1 par rapport à l'élément de support 11 dans une position dite ouverte, dans laquelle ses ouvertures additionnelles 21 se superposent aux ouvertures principales 17 prévues dans la paroi de fond 15, comme représenté à la figure 7A. Dans cette position ouverte, il est possible de monter très facilement et très rapidement les armatures de liaison 1, sans frottement, avec peu d'effort, presque sans bruit, et sans avoir à retourner l'élément de support 11 puisque le montage peut être réalisé dans le volume intérieur V de l'élément de support 11 positionné à l'endroit tel qu'il est représenté dans les figures. On introduit une à une les armatures de liaison 1 dans les ouvertures principales 17 au travers des ouvertures additionnelles 21 en insérant directement l'aile saillante 2a pourvue du pli en U 3 dans lesdites ouvertures de l'intérieur vers l'extérieur de l'élément de support 11. Ainsi l'aile pliée 4 et les brins libres 5 se positionnent directement dans le volume intérieur V délimité par ledit élément de support 11. On obtient alors un élément de support 11 équipé d'armatures de liaison 1, tel que représenté à la figure 8.When the closure plate 20 is assembled with the support member 11, as shown in figures 7A and 7B , it is moved in translation in a direction along the arrow T1 relative to the support element 11 in a so-called open position, in which its additional openings 21 are superimposed on the main openings 17 provided in the bottom wall 15, as shown to the figure 7A . In this open position, it is possible to mount the connecting reinforcements 1 very easily and very quickly, without friction, with little effort, almost without noise, and without having to return the support element 11 since the assembly can be produced in the interior volume V of the support element 11 positioned at the location as shown in the figures. The connecting reinforcements 1 are introduced one by one into the main openings 17 through the additional openings 21 by directly inserting the projecting wing 2a provided with the U-fold 3 in said openings from the inside to the outside of the element. support 11. Thus the folded wing 4 and the free strands 5 are positioned directly in the interior volume V delimited by said support element 11. A support element 11 is then obtained equipped with connecting frames 1, as shown. to the figure 8 .

La figure 9 montre en vue de dessus les armatures de liaison 1 montées dans l'élément de support 11 et la plaque de fermeture 20 dans sa position ouverte. Et la figure 10 est une vue similaire à la figure 9 dans laquelle la plaque de fermeture 20 a été déplacée en translation dans une direction opposée selon la flèche T2 de sa position ouverte à sa position fermée dans laquelle elle ferme lesdites ouvertures principales 17 autour desdites armatures pour calibrer l'ouverture restante au plus près du diamètre des brins 5, afin de rendre étanche ladite boite d'attente 10. Ce déplacement est possible car les ouvertures additionnelles 21 sont prolongées à leurs extrémités par deux encoches de calibrage 29 qui s'étendent parallèlement à l'axe longitudinal A sur une course C correspondant au moins à l'amplitude du déplacement relatif de ladite plaque de fermeture 20. Ces encoches de calibrage 29 sont dimensionnées pour enserrer les brins 5 des armatures de liaison 1 et réduire au minimum l'espace libre entre lesdits brins 5 et lesdites ouvertures principales 17.The figure 9 shows a top view of the connecting frames 1 mounted in the support element 11 and the closure plate 20 in its open position. And the figure 10 is a view similar to the figure 9 in which the closure plate 20 has been moved in translation in an opposite direction according to the arrow T2 from its open position to its closed position in which it closes said main openings 17 around said frames to calibrate the remaining opening as close as possible to the diameter strands 5, in order to seal said waiting box 10. This movement is possible because the additional openings 21 are extended at their ends by two calibration notches 29 which extend parallel to the longitudinal axis A over a stroke C corresponding at least to the amplitude of the relative displacement of said closure plate 20. These calibration notches 29 are dimensioned to grip the strands 5 of the connecting reinforcements 1 and reduce to a minimum the free space between said strands 5 and said main openings 17.

La figure 11 montre une boite d'attente 10 selon l'invention qui est terminée et prête à l'emploi. Pour ce faire, on a monté un couvercle 12 pour fermer le volume intérieur V de l'élément de support 1 et pour contenir les ailes pliées 4 des armatures de liaison 1 à l'intérieur dudit volume V. Ce couvercle 12 est constitué d'une paroi avant 30 qui couvre l'élément de support 11 sur toute ou partie de sa longueur. La paroi avant 30 est bordée de deux rebords longitudinaux 31 agencés pour s'emboiter en force dans des logements 32 prévus dans les parois latérales 16 et formés par pliage desdites parois (figures 7B et 13). Le couvercle 12 comporte en outre un pli médian 33 sensiblement centré sur l'axe longitudinal A et agencé pour conférer audit couvercle 12 une souplesse favorisant à la fois son montage et son démontage. Bien entendu, toute autre forme de couvercle 12 et tout autre mode d'assemblage du couvercle 12 sur l'élément de support 11 sont envisageables, l'essentiel étant que le couvercle 12 assure l'étanchéité de la boite d'attente 10 tout en pouvant être retiré facilement sur chantier pour accéder aux brins 5 des armatures de liaison 1, en vue d'effectuer la seconde phase de bétonnage.The figure 11 shows a waiting box 10 according to the invention which is finished and ready for use. To do this, a cover 12 has been mounted to close the internal volume V of the support element 1 and to contain the folded wings 4 of the connecting frames 1 inside said volume V. This cover 12 consists of a front wall 30 which covers the support element 11 over all or part of its length. The front wall 30 is bordered by two longitudinal flanges 31 arranged to fit in force in the housings 32 provided in the side walls 16 and formed by folding said walls ( figures 7B and 13 ). The cover 12 further comprises a median fold 33 substantially centered on the longitudinal axis A and arranged to give said cover 12 flexibility favoring both its assembly and its disassembly. Of course, any other form of cover 12 and any other method of assembling the cover 12 on the support element 11 can be envisaged, the main thing being that the cover 12 seals the waiting box 10 while at the same time. which can be easily removed on site to access the strands 5 of the connecting reinforcements 1, with a view to carrying out the second phase of concreting.

Pour rendre étanche ladite boite d'attente 10 de la figure 11, on a également monté aux extrémités de l'élément de support 11 deux pièces d'obturation 13 et 14 de forme complémentaire auxdites extrémités. Au moins une des pièces d'obturation 13 peut être constituée d'un plot magnétique pourvu par exemple d'un ou de plusieurs aimants permanents noyé(s) dans une matière synthétique et configuré pour s'emboiter dans l'une des extrémités de l'élément de support 11, par exemple dans le prolongement du couvercle 12. Dans ce cas, le couvercle 12 a une longueur inférieure à celle de l'élément de support 11 pour dégager l'extrémité correspondante. Ce plot magnétique permet de fixer très simplement la boite d'attente 10 par aimantation sur des éléments de coffrage lorsqu'ils sont métalliques. L'autre pièce d'obturation 14 peut être constituée d'un plot neutre réalisé dans une matière synthétique, par exemple une mousse expansée, et configuré pour s'insérer dans l'autre extrémité de l'élément de support 11 entre la plaque de fermeture 20 et le couvercle 12. Bien entendu, ces exemples d'organes de fermeture 13, 14 ne sont pas limitatifs, ni dans leur forme, ni dans leur composition et ni dans leur disposition, et s'étendent à toute autre variante de réalisation, avec ou sans aimant permanent en fonction de la nature des éléments de coffrage, intégrés ou dans le prolongement de ladite boite d'attente 10. On peut également prévoir un plot magnétique dans chaque pièce d'obturation ou aucun plot magnétique.To seal said waiting box 10 of the figure 11 , two sealing pieces 13 and 14 of complementary shape to said ends have also been mounted at the ends of the support element 11. At least one of the closure parts 13 may consist of a magnetic pad provided for example with one or more permanent magnets embedded in a synthetic material and configured to fit into one of the ends of the 'support element 11, for example in the extension of the cover 12. In this case, the cover 12 has a length less than that of the support element 11 to release the corresponding end. This magnetic pad allows the waiting box 10 to be fixed very simply by magnetization on formwork elements when they are metallic. The other closure piece 14 may consist of a neutral pad made of a synthetic material, for example an expanded foam, and configured to fit into the other end of the support element 11 between the plate. closure 20 and cover 12. Good of course, these examples of closure members 13, 14 are not limiting, neither in their form, nor in their composition and nor in their arrangement, and extend to any other variant embodiment, with or without a permanent magnet in function of the nature of the formwork elements, integrated or in the extension of said waiting box 10. It is also possible to provide a magnetic pad in each closure part or no magnetic pad.

La figure 14 illustre encore une particularité de la plaque de fermeture 20 dans laquelle les ouvertures additionnelles 21 peuvent recevoir, tout comme les ouvertures principales 17 prévues dans l'élément de support 11, des armatures de liaison 1 constituées de brins 5 de diamètres différents. Ainsi, on obtient une boite d'attente 10 universelle au moins pour une gamme de diamètres d'armatures de liaison 1, permettant de réduire le nombre de modèles à fabriquer et à tenir en stock. A cet effet, les encoches de calibrage 29 sont coniques et reliées aux ouvertures additionnelles 21 par une entrée évasée correspondant à la base du cône, de sorte que l'encoche de calibrage 29 peut admettre différents diamètres de brins 5 des armatures de liaison 1. Elle peut admettre aussi bien des brins 5' de petit diamètre qui viendront se loger dans le fond de l'encoche au sommet du cône, que des brins 5" de grand diamètre qui viendront se loger à mi-parcours dans l'encoche entre la base et le sommet du cône.The figure 14 further illustrates a feature of the closure plate 20 in which the additional openings 21 can receive, just like the main openings 17 provided in the support element 11, connecting reinforcements 1 made up of strands 5 of different diameters. Thus, a universal waiting box 10 is obtained at least for a range of diameters of connecting reinforcements 1, making it possible to reduce the number of models to be manufactured and to be kept in stock. For this purpose, the calibration notches 29 are conical and connected to the additional openings 21 by a flared entry corresponding to the base of the cone, so that the calibration notch 29 can accept different diameters of strands 5 of the connecting reinforcements 1. It can accept both small diameter 5 'strands which will fit into the bottom of the notch at the top of the cone, as well as large diameter 5' strands which will fit midway in the notch between the cone. base and top of the cone.

Possibilités d'application industrielle : Possibilities of industrial application :

La boite d'attente 10 selon l'invention peut être réalisée par tout procédé de fabrication connue et dans toute matière adaptée aux contraintes liées à son utilisation ainsi qu'à son mode d'utilisation. Par exemple, l'élément de support 11 peut être réalisé dans une matière métallique, comme de l'acier, à partir d'une tôle emboutie, pliée et coupée à la longueur souhaitée. Il peut aussi être réalisé dans une matière synthétique ou composite, à partir d'une feuille extrudée ou moulée. Le dispositif d'obturation 18 peut être réalisé dans une matière métallique, une matière synthétique ou une matière composite, à partir d'une tôle ou d'une feuille emboutie, pliée et coupée à la longueur souhaitée. Le couvercle 12 peut être réalisé dans une matière synthétique ou une matière composite, à partir d'une feuille extrudée et coupée à la longueur souhaitée. Les différentes pièces constitutives de la boite d'attente 10 et destinées à être en contact avec le béton peuvent comporter une surface structurée pour améliorer l'adhérence avec le béton.The waiting box 10 according to the invention can be produced by any known manufacturing process and in any material suitable for the constraints linked to its use as well as to its mode of use. For example, the support member 11 can be made of a metallic material, such as steel, from a stamped sheet, bent and cut to the desired length. It can also be made in a synthetic or composite material, from an extruded or molded sheet. The closure device 18 may be made of a metallic material, a material synthetic or a composite material, from a sheet or a stamped sheet, folded and cut to the desired length. The cover 12 can be made of a synthetic material or a composite material, from a sheet extruded and cut to the desired length. The various constituent parts of the waiting box 10 and intended to be in contact with the concrete may include a structured surface to improve adhesion with the concrete.

Il apparait clairement de cette description que la boite d'attente 10 selon l'invention répond aux objectifs fixés, à savoir que sa nouvelle conception permet d'introduire très facilement et très rapidement les armatures de liaison 1 dans les ouvertures principales 17 réduisant l'effort physique nécessaire, et le bruit induit, permettant ainsi d'augmenter la production des boites d'attente 10, tout en améliorant l'ergonomie du poste de travail. La boite d'attente 10 n'a plus besoin d'être retournée en cours de montage, ce qui réduit encore le temps de production. Il est possible en outre de réduire le nombre de boites d'attente en stock, puisque l'obturation des ouvertures principales 17 et leur calibrage s'effectuent en fin de montage par le dispositif d'obturation 18, permettant de mettre en production un seul modèle de boite d'attente pour une gamme déterminée de diamètres d'armatures de liaison 1. Enfin, le procédé de production des boites d'attente 10 étant optimisé, il peut être plus facilement automatisé.It is clear from this description that the waiting box 10 according to the invention meets the objectives set, namely that its new design makes it possible to very easily and very quickly introduce the connecting frames 1 into the main openings 17 reducing the necessary physical effort, and the noise induced, thus making it possible to increase the production of waiting boxes 10, while improving the ergonomics of the workstation. The waiting box 10 no longer needs to be turned over during assembly, which further reduces production time. It is also possible to reduce the number of waiting boxes in stock, since the closing of the main openings 17 and their calibration are carried out at the end of assembly by the sealing device 18, making it possible to put a single one into production. waiting box model for a determined range of connecting reinforcement diameters 1. Finally, the production process of the waiting boxes 10 being optimized, it can be more easily automated.

La présente invention n'est pas limitée aux exemples de réalisation décrits mais s'étend à toute modification et variante évidentes pour un homme du métier. Notamment, la forme de la boite d'attente ainsi que les matériaux qui la composent n'ont pas d'effet limitatif sur l'objet de l'invention. De même, la forme et la matière des armatures de liaison n'ont pas d'effet limitatif sur l'objet de l'invention.The present invention is not limited to the embodiments described but extends to any modification and variant obvious to a person skilled in the art. In particular, the shape of the waiting box as well as the materials from which it is made have no limiting effect on the subject of the invention. Likewise, the shape and material of the connecting reinforcements have no limiting effect on the subject of the invention.

Claims (15)

  1. A continuity box (10) for receiving tie bars (1), commonly referred to as a "continuity box", comprising a support part (11) consisting of a bottom wall (15) extending along a longitudinal axis (A) and flanked by two side walls (16) parallel to said longitudinal axis (A), said support part (11) being arranged to receive a large number of tie bars (1) including a right-angle bracket (2) passing through said bottom wall (15), and a bent end (4) housed in the volume (V) of said support part (11) between the two side walls (16), a lid (12) arranged to extend in parallel to said bottom wall (15), to close said support part (11), and contain bent end (4) of said tie bars (1) in the inside volume (V) and two end parts (13, 14) arranged to close the ends of said support part (11) and to seal said continuity box (10), said bottom wall (15) comprising a large number of main openings (17) extending between the two side walls (16) of said support part (11), and arranged to allow the insertion of the right-angle bracket (2) of said tie bars (1), and said continuity box (10) further comprising a covering plate (18) arranged to close said main openings (17) after the installation of said tie bars (1) and to ensure the sealing of said continuity box (20), characterized in that said covering plate (18) includes at least one closing plate (20) superimposed on bottom wall (15) of said support part (11), and provided with a large number of additional openings (21) for the passage of said tie bars (1) and in that said closing plate (20) is free to move in translational motion (T1, T2) with respect to said support part (11) between an open position in which said additional openings (21) are superimposed on the main openings (17) and allow the insertion of said tie bars (1), and a closed position in which said additional openings (21) are offset and close the said main openings (17).
  2. A continuity box according to claim 1, characterized in that the main openings (17) and the said additional openings (21) are substantially oblong.
  3. A continuity box according to claim 1, characterized in that the main openings (17) and the said additional openings (21) are arranged at regular intervals (I).
  4. A continuity box according to claim 1, characterized in that the main openings (17) and the said additional openings (21) running perpendicular to the longitudinal axis (A) of said support part (22).
  5. A continuity box according to claim 1, characterized in that the said additional openings (21) are extended at their ends by calibration slots (29) running parallel to the longitudinal axis (A) of said support part (11) and are arranged in such a way as to grip said tie bars (1) when said closing plate (20) is in the closed position.
  6. A continuity box according to claim 5, characterized in that the shape of said calibration slots (29) is tapered to accept several diameters of the wires (5) used in making the tie bars (1).
  7. A continuity box according to claim 1, characterized in that the closing plate (20) is superimposed on said bottom wall (15) through its inside face (15b).
  8. A continuity box according to claim 1, characterized in that the closing plate (20) is superimposed on said bottom wall (15) through its outside face (15a).
  9. A continuity box according to claim 1, characterized in that the closing plate (20) and the support part (11) have complementary nesting shapes arranged to guide said closing plate (20) by a translational motion with respect to said support part (11).
  10. A continuity box according to claim 1, characterized in that the said closing plate (20) comprises a single part or at least two parts arranged end to end.
  11. A method of assembling tie bars (1) in a continuity box (10) comprising a support part (11) consisting of a bottom wall (15) extending along a longitudinal axis (A) and flanked by two side walls (16) parallel to said longitudinal axis (A), said support part (11) being arranged to receive a large number of tie bars (1) including a right-angle bracket (2) passing through said bottom wall (15) , and a bent end (4) housed inside volume (V), said support part (11) between the two side walls (16), a cover (12) arranged to extend in parallel to said bottom wall (15), to close said support part (11) and contain the bent end (4) of said tie bars (1) within the inside volume (V), and two closing parts (13, 14) arranged to close the ends of said support part (11) and to seal said continuity box (10), said bottom wall (15) comprising a large number of main openings (17) extending between the two side walls (16) of said support part (11), and arranged to allow the insertion of the projecting end (2) of said tie bars (1), wherein the length of said main openings (17) is at least equal to the length of right-angle bracket (2) of said tie bars and the width of said main openings (17) is at least equal to the diameter of the wires (5) forming said tie bars (1) and said continuity box (10) further comprising a cover (18) arranged to close said main openings (17) after the installation of said tie bars (1) and to ensure the sealing of said continuity box (20), characterized in that a continuity box (10) is used according to any one of the previous claims, in which the covering device (18) comprises at least one closing plate (20) superimposed on the bottom wall (15) of said support part (11) and is provided with a great number of additional openings (21) for the passage of said tie bars (1), said closing plate (20) being able to move in a translational motion (T1, T2) with respect to said support part (11), from an open position in which said additional openings (21) are superimposed on said main openings (17) and allow the insertion of said tie bars (1), and a closed position in which said additional openings (21) are offset and close the said main openings (17), so that, to assemble said tie bars (1) in said support part (11), said closing plate (20) is placed in the open position and the right-angle bracket (2) of each of the tie bars (1) is inserted into one of the main openings (17) through the superimposed additional opening (21) corresponding to it, working from the inside volume (V) of the support part (11) so that said right-angle bracket (2) passes through said bottom wall (11) and said closing plate (20) is installed from the inside to the outside of said continuity box (10) and so that, after the assembly of said tie bars (1), said closing plate (20) is moved in translational motion from the open position to the closed position in which it closes said main openings (17) around said tie bars (1) to seal the continuity box (10).
  12. A method of assembling according to claim 11, characterized in that a closing plate (20) is used in which said additional openings (21) are extended at their ends by calibration slots (29) running in parallel to the longitudinal axis (A) of said support part (11) and arranged in such a way as to grip said tie bars (1) when said closing plate (20) is in the closed position.
  13. A method of assembling according to claim 12, characterized in that the same model of continuity box (10) is used for several wire (5) diameters of the said tie bars (1) and in that the calibration of said main openings (17) is carried out after the assembly of said tie bars (1) by means of said covering device (18).
  14. A method of assembling according to claim 13, characterized in that it is intended for the said calibration slots (29) to be tapered in shape to accept several diameters of the wires (5) used in making the tie bars(1).
  15. A method of assembling according to claim 11, characterized in that the assembly of said tie bars (1) in said support part (11) and the closing of said continuity (10) box is automated.
EP19199028.2A 2018-09-25 2019-09-23 Continuity box for tie bars and method for installing the tie bars in said continuity box Active EP3628796B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR1858689A FR3086311B1 (en) 2018-09-25 2018-09-25 BOX FOR PENDING CONNECTION FRAMES AND METHOD OF ASSEMBLING THE LINKING FRAMES IN THE SAID WAITING BOX

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EP3628796A1 EP3628796A1 (en) 2020-04-01
EP3628796B1 true EP3628796B1 (en) 2021-05-19

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EP19199028.2A Active EP3628796B1 (en) 2018-09-25 2019-09-23 Continuity box for tie bars and method for installing the tie bars in said continuity box

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EP (1) EP3628796B1 (en)
FR (1) FR3086311B1 (en)

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Publication number Priority date Publication date Assignee Title
CN112663872A (en) * 2020-12-17 2021-04-16 广东二十冶建设有限公司 Steel bar stirrup

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE8336278U1 (en) * 1983-12-17 1984-03-29 Hoff, Walter, 4000 Düsseldorf REINFORCEMENT ELEMENT
FR2796095B1 (en) 1999-07-08 2001-09-07 Cogito WAITING BOX BOX AND WAITING BOX INCLUDING SUCH A BOX
DE29916011U1 (en) * 1999-09-16 2001-02-08 BETOMAX Kunststoff- und Metallwarenfabrik GmbH & Co KG, 41460 Neuss Storage device for connecting elements of concrete parts
FR2890091B1 (en) * 2005-08-30 2007-12-07 Herve Auney ARMATURE SUPPORT DEVICE
FR3018839B1 (en) 2014-03-19 2016-03-11 Fimurex PENDING BOX FOR LIAISON ARMATURES

Non-Patent Citations (1)

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FR3086311A1 (en) 2020-03-27
EP3628796A1 (en) 2020-04-01

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