EP3628796A1 - Gehäuse für ausstehende anschlussbewehrungen, und montageverfahren von anschlussbewehrungen in dieses gehäuse - Google Patents

Gehäuse für ausstehende anschlussbewehrungen, und montageverfahren von anschlussbewehrungen in dieses gehäuse Download PDF

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Publication number
EP3628796A1
EP3628796A1 EP19199028.2A EP19199028A EP3628796A1 EP 3628796 A1 EP3628796 A1 EP 3628796A1 EP 19199028 A EP19199028 A EP 19199028A EP 3628796 A1 EP3628796 A1 EP 3628796A1
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EP
European Patent Office
Prior art keywords
support element
openings
waiting box
connecting frames
waiting
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP19199028.2A
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English (en)
French (fr)
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EP3628796B1 (de
Inventor
Philippe MIRAS
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Plaka Group France SASU
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Plaka Group France SASU
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Publication of EP3628796A1 publication Critical patent/EP3628796A1/de
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Publication of EP3628796B1 publication Critical patent/EP3628796B1/de
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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 connection armatures, commonly called “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 member being arranged to receive a plurality of connecting frames including a projecting wing which passes through said bottom wall, and a folded wing which is housed inside said support member between the two side walls, a cover arranged to extend parallel to said bottom wall, to close said support element and to contain the folded wing of said frames in the interior volume of said support element, and two closure parts arranged for close the ends of said support element and to ensure the tightness of said waiting box, said bottom wall comprising a greater main openings extending between the two side walls of said support member, and arranged to allow the introduction of the projecting wing of said connecting frames, and said waiting box further comprising a shutter device arranged to close said main openings after the installation of said connecting frames and to seal said waiting box.
  • the present invention also relates to a method of mounting waiting connection armatures in said waiting box.
  • Waiting boxes of this type designed to receive waiting connection reinforcements are well known in the construction field, and in particular in the construction of reinforced concrete structures and buildings. They are commonly used in order to be able to link, by means of metallic connection frames, two construction elements produced during two concreting phases, 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 concreting phase . 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 .
  • connection 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 grooving, or the like to increase the surface. adhesion between steel and concrete.
  • the connecting reinforcements 1 intended to be on standby are most of the time folded to form a U, then folded substantially at right angles to form a square, as shown in the figure 1 .
  • the connecting frame 1 in the form of a square thus comprises a first wing 2 formed by the U-shaped fold 3, intended to be protruding outside the waiting box to be embedded in the concrete of a first phase concreting, and a second wing 4 formed by the two free strands 5 in the extension of the U-shaped fold 3, housed in the waiting box.
  • the example described and illustrated is not limiting and extends to any other form of equivalent connecting reinforcement.
  • 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 down in order inside the support element, before fitting the cover to close the box. Since the waiting box must be waterproof against concrete and in particular the laitance of concrete during the concreting phase, the holes provided in the bottom wall are calibrated to the diameter of the strands of the connection reinforcements to thus avoid any penetration of laitance . This constraint poses numerous drawbacks both during the manufacture of the boxes and during the mounting of the frames in these boxes. Indeed, the calibrated holes make it necessary to produce a model of waiting boxes for each diameter of connecting reinforcement, which multiplies stocks and complicates the production and management of waiting boxes, these additional costs having repercussions on the price. of the product.
  • the publication CH 666 931 describes a waiting box comprising oblong transverse slots in its bottom wall making it easier to insert the frames, each oblong slot being closed by an insert, fitted and clipped between the two through strands of each frame.
  • the publication DE 299 16 011 U1 describes a waiting box comprising half-slots and a closure plate housed inside the box, provided with half-slots arranged in opposition to the previous ones to close them around the strand passing through each butt-shaped frame . This solution does not apply to U-folded frames.
  • 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 be manufactured. It also aims to offer simplicity and speed of assembly of the armatures, with no attached part that can 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 the ergonomics. of work and the production rate. It also aims to open up possibilities for automating production.
  • the invention relates to a waiting box of the kind 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 frames, said closure plate being movable in longitudinal translation relative 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 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 perpendicular 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 enclose said connecting frames when said closure plate is in the closed position.
  • Said calibration notches can 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 forms of interlocking arranged to guide said closure plate in longitudinal translation relative to said support element.
  • said closure plate may consist of a single piece or of at least two pieces placed end to end.
  • the invention relates to a method of mounting connection armatures on standby in a waiting box, characterized in that a waiting box as defined above is used, 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 relative to 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 connecting frames, and a closed position in which said additional openings are offset and close said main openings, in that, for mount said connecting armatures in said support element, position said p closing lacquer in the open position, and the projecting wing of each of the connecting frames is introduced into one of the main openings through the additional superimposed opening which corresponds to it by placing itself on 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
  • a closure plate is used in which said additional openings are extended at their ends by sizing notches extending parallel to the longitudinal axis of said support element to enclose said connecting reinforcements when said closure plate is in the closed position.
  • FIGS 1 to 3 illustrate an example of known connecting frames 1 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” section 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 a preferred embodiment in the figures 6 to 14 . It comprises in known manner a support element 11 receiving the connection frames 1, a cover 12 and closure parts 13 and 14 to close the waiting box 10 in order to make it waterproof, in particular to the laitance of 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 interior volume V. It is characterized by its large openings provided in its bottom wall 15 to allow the introduction of the connection fittings 1 more easily and faster, without having to turn 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 hereinafter called main openings 17 extend between the two side walls 16, and advantageously replace the calibrated holes of prior art.
  • the connecting frames 1 are dimensioned to directly receive the U-shaped protruding wing 2 of said connecting frames 1. More specifically, they have a length at least equal and preferably slightly greater than the length d2 of the protruding wing 2 and have a width at least equal and preferably slightly greater than the diameter of the strands 5 constituting said reinforcements.
  • the connecting frames 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 interval I, corresponding to the interval I represented 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 installation of the connection frames 1, to calibrate these openings to the diameter of the strands 5 of said frames, and to ensure the tightness of the waiting box 10.
  • the Figures 5A and 5B schematically and enlargedly illustrate a section of the bottom wall 15, taken along the longitudinal axis A, showing a single main opening 17 across its width, and associated with a closure device 18, without these examples being are limiting.
  • the figure 5A shows a closure plate 20 superimposed on the bottom wall 15 of the support element 11 by 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 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 to 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.
  • the various embodiments of the shutter device 18 which have just been described can if necessary be combined with one another in the same waiting box 10. They can also give rise to other embodiments which are not shown, but whose objective remains the same, namely closing off said main openings 17 by adapting to the diameter of the strands 5 of said frames.
  • 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 tightness of the waiting box 10.
  • the closure plate 20 is assembled to the support element 11 by a sliding link, in 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 has 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 in the 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 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 guiding 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 by its outer face 15a. In this case, the complementary nesting forms will be different from those described and adapted to guide the closure plate in longitudinal translation relative to said support element.
  • the closure plate 20 When the closure plate 20 is assembled to the support element 11, as shown in the 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 connection fittings 1 very easily and very quickly, without friction, with little effort, almost without noise, and without having to turn the support element 11 since the mounting can be produced in the internal volume V of the support element 11 positioned at the place as shown in the figures.
  • the connecting reinforcements 1 are introduced one by one into the main openings 17 through additional openings 21 by directly inserting the projecting wing 2a provided with the U-shaped fold 3 in said openings from the inside to the outside of the element of 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 with connection reinforcements 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 along 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 on 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 connection frames 1 and minimize 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 interior volume V of the support element 1 and to contain the folded wings 4 of the connection 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 edges 31 arranged to fit into force in housings 32 provided in the side walls 16 and formed by folding said walls ( Figures 7B and 13 ).
  • the cover 12 further comprises a central fold 33 substantially centered on the longitudinal axis A and arranged to give said cover 12 a 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 can be easily removed on site to access the strands 5 of the connecting frames 1, in order to perform the second concreting phase.
  • At least one of the closure pieces 13 may consist of a magnetic stud 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.
  • the other closure part 14 may consist of a neutral stud made of a synthetic material, for example an expanded foam, and configured to be inserted in the other end of the support element 11 between the plate closure 20 and cover 12. Fine understood, these examples of closing 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 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 stud in each closure piece or no magnetic stud.
  • the figure 14 illustrates another feature of the closure plate 20 in which the additional openings 21 can receive, like the main openings 17 provided in the support element 11, connecting frames 1 made of strands 5 of different diameters.
  • a universal waiting box 10 is obtained at least for a range of diameters of connecting frames 1, making it possible to reduce the number of models to be produced and 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 admit different strand diameters 5 of the connection fittings 1. It can accept both small diameter 5 'strands which will be housed in the bottom of the notch at the top of the cone, as well as large diameter 5 "strands which will be housed halfway in the notch between the base and top of the cone.
  • the waiting box 10 can be produced by any known manufacturing process and in any material adapted to the constraints linked to its use and to its mode of use.
  • the support element 11 can be made of a metallic material, such as steel, from a stamped sheet, folded and cut to the desired length. It can also be produced in a synthetic or composite material, from an extruded or molded sheet.
  • the shutter device 18 can be made of a metallic material, a material synthetic or a composite material, from a pressed sheet or sheet, folded and cut to the desired length.
  • the cover 12 can be made of a synthetic material or a composite material, from an extruded sheet 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 the adhesion with the concrete.
  • the waiting box 10 meets the objectives set, namely that its new design makes it possible to introduce very easily and very quickly the connection fittings 1 into the main openings 17 reducing the physical effort required, and the noise induced, thereby increasing the production of the waiting boxes 10, while improving the ergonomics of the workstation.
  • the waiting box 10 no longer needs to be returned during assembly, which further reduces production time. It is also possible to reduce the number of waiting boxes in stock, since the closure of the main openings 17 and their calibration are carried out at the end of assembly by the closure device 18, making it possible to produce a single model of waiting box for a determined range of diameters of connection reinforcements 1.
  • the production process of 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 and the materials of which it is made have no limiting effect on the subject of the invention.
  • the shape and the material of the connection 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)
  • Cartons (AREA)
  • Reinforcement Elements For Buildings (AREA)
EP19199028.2A 2018-09-25 2019-09-23 Gehäuse für ausstehende anschlussbewehrungen, und montageverfahren von anschlussbewehrungen in dieses gehäuse Active EP3628796B1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR1858689A FR3086311B1 (fr) 2018-09-25 2018-09-25 Boite pour armatures de liaison en attente et procede de montage des armatures de liaison dans ladite boite d'attente

Publications (2)

Publication Number Publication Date
EP3628796A1 true EP3628796A1 (de) 2020-04-01
EP3628796B1 EP3628796B1 (de) 2021-05-19

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EP19199028.2A Active EP3628796B1 (de) 2018-09-25 2019-09-23 Gehäuse für ausstehende anschlussbewehrungen, und montageverfahren von anschlussbewehrungen in dieses gehäuse

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EP (1) EP3628796B1 (de)
FR (1) FR3086311B1 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112663872A (zh) * 2020-12-17 2021-04-16 广东二十冶建设有限公司 一种钢筋马镫

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH666931A5 (en) 1983-12-17 1988-08-31 Walter Hoff Lost shuttering securement for concrete reinforcement - has U=shaped member, whose web has elongated holes, transverse to shuttering longitudinal axis
DE29916011U1 (de) 1999-09-16 2001-02-08 BETOMAX Kunststoff- und Metallwarenfabrik GmbH & Co KG, 41460 Neuss Verwahrvorrichtung für Verbindungselemente von Betonteilen
FR2796095B1 (fr) 1999-07-08 2001-09-07 Cogito Caisson de boite d'attente et boite d'attente integrant un tel caisson
FR2890091A1 (fr) * 2005-08-30 2007-03-02 Herve Auney Dispositif de support d'armatures
FR3018839B1 (fr) 2014-03-19 2016-03-11 Fimurex Boite d'attente pour armatures de liaison

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH666931A5 (en) 1983-12-17 1988-08-31 Walter Hoff Lost shuttering securement for concrete reinforcement - has U=shaped member, whose web has elongated holes, transverse to shuttering longitudinal axis
FR2796095B1 (fr) 1999-07-08 2001-09-07 Cogito Caisson de boite d'attente et boite d'attente integrant un tel caisson
DE29916011U1 (de) 1999-09-16 2001-02-08 BETOMAX Kunststoff- und Metallwarenfabrik GmbH & Co KG, 41460 Neuss Verwahrvorrichtung für Verbindungselemente von Betonteilen
FR2890091A1 (fr) * 2005-08-30 2007-03-02 Herve Auney Dispositif de support d'armatures
FR3018839B1 (fr) 2014-03-19 2016-03-11 Fimurex Boite d'attente pour armatures de liaison

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112663872A (zh) * 2020-12-17 2021-04-16 广东二十冶建设有限公司 一种钢筋马镫

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Publication number Publication date
FR3086311B1 (fr) 2021-01-29
EP3628796B1 (de) 2021-05-19
FR3086311A1 (fr) 2020-03-27

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