EP2800843B1 - Lost formwork for vertical walls - Google Patents

Lost formwork for vertical walls Download PDF

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Publication number
EP2800843B1
EP2800843B1 EP12813883.1A EP12813883A EP2800843B1 EP 2800843 B1 EP2800843 B1 EP 2800843B1 EP 12813883 A EP12813883 A EP 12813883A EP 2800843 B1 EP2800843 B1 EP 2800843B1
Authority
EP
European Patent Office
Prior art keywords
panel
lamina
formwork
face
horizontal direction
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.)
Not-in-force
Application number
EP12813883.1A
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German (de)
French (fr)
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EP2800843A1 (en
Inventor
Stefan Chirtu
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Chirtu Stefan
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Chirtu Stefan
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Filing date
Publication date
Application filed by Chirtu Stefan filed Critical Chirtu Stefan
Publication of EP2800843A1 publication Critical patent/EP2800843A1/en
Application granted granted Critical
Publication of EP2800843B1 publication Critical patent/EP2800843B1/en
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Anticipated expiration legal-status Critical

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B2/00—Walls, e.g. partitions, for buildings; Wall construction with regard to insulation; Connections specially adapted to walls
    • E04B2/84—Walls made by casting, pouring, or tamping in situ
    • E04B2/86—Walls made by casting, pouring, or tamping in situ made in permanent forms
    • E04B2/8611—Walls made by casting, pouring, or tamping in situ made in permanent forms with spacers being embedded in at least one form leaf
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
    • E04H4/00—Swimming or splash baths or pools
    • E04H4/0075—Swimming or splash baths or pools made of concrete
    • E04H4/0081—Swimming or splash baths or pools made of concrete with walls and floor cast in situ

Definitions

  • the invention relates to a modular formwork lost for the realization of vertical walls.
  • the invention also relates to a kit for producing such a formwork.
  • the invention finally relates to a pool whose vertical walls are made using such a formwork.
  • lost forms for the realization of vertical walls of pools such as swimming pools.
  • These lost forms typically comprise a front panel oriented towards the inside of the basin, a rear panel, and connecting elements connecting the front panel to the rear panel, so as to provide between these two panels a space capable of being filled with liquid concrete. .
  • the invention aims to solve one or more of these disadvantages.
  • the invention thus relates to a modular formwork lost for the production of vertical walls according to claim 1.
  • the formwork requires only a small number of parts, is simple to assemble, and allows for tanks having any shape.
  • the spacer is flexible means that the rear panel can be joined to the connecting elements without the need for a specific tool.
  • Embodiments of this formwork may include one or more of the features of the dependent claims.
  • the embodiment of the front panel makes that front panel can be easily assembled by successive interlocking blades. Due to the presence of grooves on each of the blades, these blades can be easily cut over their entire height. Finally, the area between two walls where is absent the rear wall makes the blade can be easily deformed in torsion, which facilitates its interlocking in another blade.
  • the invention also relates to a kit for producing a formwork according to the invention, comprising the constituent elements of the front panel and the rear panel and the connecting elements.
  • the invention relates to a pool comprising water, a bottom and vertical concrete walls, wherein the vertical walls are made by a formwork according to the invention.
  • the figure 1 illustrates a basin 100 comprising water, a bottom 102 and vertical walls 104 of concrete, made by a modular formwork lost.
  • this basin comprises a channel 106, configured to collect water overflowing the basin 100.
  • the walls 104 separate an outer space from an interior space.
  • the basin 100 is delimited by the walls 104.
  • the interior space is the interior of the basin 100 and the outside space is located outside the basin 100.
  • the vertical direction is represented by the direction y and the horizontal direction is represented by the direction x. This horizontal direction is perpendicular to the vertical direction.
  • the figure 2 illustrates, for example, the part of the formwork 1 used to make the portion of the vertical wall 104 (here not including the channel 106) of the basin 100 designated by a dotted circle at the figure 1 .
  • This part of the formwork 1 follows a trajectory 101 horizontal curve, represented by a dashed line on the figure 2 .
  • This trajectory is for example composed of a rectilinear part parallel to the horizontal direction, and a curved part whose radius of curvature is for example less than 100m and, preferably, less than 50m.
  • Each of these connecting elements 10 connects the front panel 2 to the rear panel 6, so as to provide between the two panels a space 9 adapted to be filled with liquid concrete.
  • These connecting elements 10 are parallel and separated by a distance d when the formwork extends rectilinearly along the horizontal direction. This distance d corresponds to the distance in the horizontal direction between two consecutive attachment points of the front panel 2 to a connecting element 10. This distance d is for example greater than 2 cm and less than 30 cm, and preferably greater than 5 cm and less at 25cm.
  • Each connecting element 10 comprises at least one attachment hook 12 of the rear panel 6, and at least one spacer 14.
  • Each spacer 14 extends between a front end 16 and a rear end 18, resting against, respectively, the panel front 2 and rear panel 6.
  • the rear panel 6 comprises a set of main through slots 20. Each slot 20 is able to be traversed by the fixing hook 12. These slots 20 are evenly spaced in the horizontal direction along the rear panel 6. The spacing between two consecutive main slots 20 is equal to the distance d, ⁇ 5% or ⁇ 2%.
  • Additional through slots 22 are formed in this rear panel 6, on either side of each of the main slots 20, in the horizontal direction.
  • the gap between two main slots 20 is filled with additional slots 22.
  • the spacing e between any two of the immediately consecutive slots in the horizontal direction is between 7mm and 35mm.
  • this spacing e is between 9mm and 25mm. Even more advantageously, this spacing e is between 10mm and 20mm.
  • the rear panel 6 comprises several sets of slots 20 and 22, extending along horizontal directions parallel to each other. To simplify the figure 1 only one set of slots is shown. These sets are separated vertically two by two, with the shortest distance measured between the center of a slot of one set and the middle of the respective slot of the other together. This distance is for example greater than 10 cm and less than 30 cm. Preferably, this distance is greater than 15 cm and less than 25 cm.
  • main and additional slots 22 are identical. Also, to simplify the description, only a main slot 20 is described in detail in the following.
  • the height of the slot 20 is advantageously greater than 5 mm and preferably greater than 20 mm.
  • the height of this slot 20 is less than 10 cm and preferably less than 30 mm.
  • This slot 20 is for example made in the rear panel by incision. It is advantageously waterproof to liquid concrete.
  • the rear panel is made of a flexible material whose Young's modulus is less than 5GPa.
  • the Young's modulus of panel material 6 is greater than 0.01 or 0.1 GPa.
  • This rear panel 6 is for example a corrugated polypropylene plate, with a thickness of between 1 mm and 2 cm, and preferably between 2 mm and 15 mm.
  • each spacer 14 is movable by hand from a rest position 15, shown in dashed lines on the figure 1 to a staggered position 17.
  • the front 16 and rear 18 ends of the spacer are aligned on an axis perpendicular to the front panel 2.
  • the rear end 18 is spaced apart, in the horizontal direction, from its rest position 15 by a distance at least equal to e / 2 and, preferably, greater than or equal to e.
  • the figure 2 schematically the use of the spacer 14.
  • the connecting elements 10 respectively located on the left and in the middle of the figure are aligned in the horizontal direction along the rectilinear portion of the trajectory 101.
  • the distance between these two connecting elements 10 is equal to d.
  • the connecting element located to the right of the figure 2 is not aligned with the previous link elements. So that the rear end 18 of the spacer 14 of this connecting element 10 is in facing relation with a slot 20 or 22 of the rear panel 6, this spacer 14 is moved from its rest position 15 to its offset position. 17. Thus, the end 18 is then inserted into an additional slot 22. This allows for the formwork for a basin having any radius of curvature.
  • the figure 3 illustrates an example of connecting element 10 and a spacer 14, when in its rest position 15.
  • This spacer 14 has for example a planar and oblong shape extending in a vertical plane normal to the front panel.
  • the length of this spacer 14, defined as the distance between the front ends 16 and rear 18, is for example greater than 10 cm and preferably greater than 15 cm. This length is for example less than 30 cm and preferably less than 25 cm.
  • This spacer 14 comprises for example a part central rectangular parallelepiped shape 25, extending over at least 50% of its length, and two rectangular flares 26 and 28, arranged in the extension of this central portion 25. These two flares 26 and 28 are terminated respectively by the front ends 16 and rear 18.
  • the height of the central portion 25, measured in the vertical direction, is for example greater than 1cm and less than 15cm, and preferably between 3cm and 8cm.
  • the height of one of its ends 16 or 18 in the vertical direction is between one and three times the height of the central portion 25.
  • the thickness of the central portion in the horizontal direction is at least ten or fifty times less than the length of the spacer 14.
  • the spacer 14 is symmetrical with respect to a vertical plane extending in the horizontal direction.
  • the spacer 14 is flexible in the horizontal direction.
  • the product El y of its quadratic moment I y calculated in the direction of a vertical axis passing through its attachment point on the front panel, with its Young's modulus E is advantageously between 1 Nm 2 and 50 Nm 2 . Even more advantageously, this product El y is between 5Nm 2 and 30N.m 2 .
  • this spacer 14 is made of polypropylene.
  • the connecting element 10 comprises a holding bar 19.
  • This holding bar 19 is of oblong shape and extends in the vertical direction.
  • the holding bar 19 comprises at least one hook 12.
  • Each hook 12 is configured to pass through the slots 20 or 22 of the rear panel 6.
  • the rear end 18 of the spacer 14 has at least one cavity 27 and a bulge 11
  • the cavity 27 is configured to receive the hook 12.
  • the only opening of the cavity 27 opens into the end bearing on the rear panel 6. This opening is large enough to allow the withdrawal of the hook 12
  • the spacer also has lips 29 which border the periphery of this opening. These lips 29 are supported on the rear panel 6 to prevent the concrete from entering the interior of the cavity 27.
  • the bulge 11 is of complementary shape to the hook 12 and is able to retain the hook 12 inside the cavity 27 by form cooperation.
  • the spacer 14 also comprises at least one cover 27c.
  • This cover 27c is movable, by folding, between an open position (illustrated on the figure 4 ) and a closed position. In the closed position, this cover 27c covers the cavity 27.
  • the connecting element 10 comprises several spacers 14. These spacers 14 are for example superimposed one above the other in the vertical direction.
  • the connecting element 10 also comprises a vertical plate 23. This vertical plate 23 is joined to the spacers 14.
  • the figure 5 illustrates an example of the front panel 2 of the formwork.
  • This front panel 2 comprises a flexible wall 3, identical to the rear panel 6.
  • This flexible wall 3 is joined to the connecting elements 10 by means of a hook 13 which passes through a main slot 20 of the flexible wall 3.
  • This panel front also includes rigid plates 24 pressed against the wall 3. These rigid plates 24 are interposed between the flexible wall 3 and a retaining bar 21. These rigid plates 24 form the front face 4 of the front panel 2.
  • These rigid plates 24 are capable of reinforcing the mechanical strength of the front panel 2 in the presence of liquid concrete.
  • the thickness of each plate 24 is greater than 5 mm and, even more advantageously, greater than 25 mm. This thickness is advantageously less than 10 cm and even more advantageously less than 5 cm.
  • These rigid plates 24 are for example cardboard.
  • the hook 13 is connected to the spacer in the same manner as the hook 12.
  • the hooks 13 are identical to the hooks 12.
  • the front end 16 of the spacer 14 comprises a cavity, lips and a bulge respectively symmetrical to the cavity 27, the lips 29 and the bulge 11 of the front end 18 of the spacer 14 and providing the same function. These lips are supported on the front panel 2 to prevent the concrete from entering the interior of this cavity. This removes the front panel 2 after the completion of the vertical wall.
  • FIG. 6 and 7 illustrate another embodiment of a front panel 5 of the formwork, may be used instead of the front panel 2 described above.
  • This front panel 5 is formed by interlocking a succession of blades in each other.
  • the figure 5 represents only two blades 30 and 31.
  • the blade 30 is joined to a connecting element 7.
  • the connecting elements 7 fulfill the same function as the connecting elements 10.
  • they are identical to the connecting elements 10 except that their front end is shaped to fit into a slide 39 of the blades 30 or 31.
  • the blades 30 and 31 are identical. Also, only the blade 30 is described in detail in the text that follows.
  • This blade 30 is rigid, generally rectangular parallelepiped shape. It comprises a front face 32 ( figure 7 ) facing towards the inside of the basin, a rear face 34, two vertical edges 36 and 38 and at least one slide 39.
  • the front 32 and rear 34 faces extend essentially in vertical parallel planes.
  • the slide 39 makes it possible to secure the blade 30 to the connecting element 7.
  • This slide 39 is situated on the rear face 34 of the blade. It extends over at least 50% of the height of the blade, and preferably over at least 90% of its height.
  • a groove 40 is formed vertically over the entire height of the vertical edge 36. This groove 40 shares the edge 36 in a front tongue 42 and a rear tongue 44.
  • front tabs 42 and rear 44 are arranged vis-à-vis and, respectively, in the extension of the front 32 and rear 34 of the blade 30.
  • the tongue rear 44 is longer than the front tongue 42 of at least 1 mm in the horizontal direction.
  • the length of the rear tongue 44 is greater than or equal to two or 1.5 times the length of the tongue before 42.
  • the vertical edge 38 comprises over 90% of its height, and preferably over its entire height, a post 46 of complementary shape to the groove 40 formed in the vertical edge 36. This post 46 is configured to be fitted into this groove 40 by a pivoting movement whose angular amplitude is greater than 10 °, 25 ° or 45 ° .
  • the second blade can be nested with the first blade, in the manner of floorboards, as illustrated in FIG. figure 5 .
  • the front panel 5 of the formwork is thus formed by successive interlocking of the blades 30 and 31, forming the inner periphery of the formwork.
  • these blades 30 and 31 comprise locking devices, configured to prevent translation in the horizontal direction of one of the two blades relative to the other blade once these two blades interlocked with each other.
  • the front tongue 42 comprises on its side facing the rear tongue 44 a bulge 48 which extends vertically over 90% of its height, and preferably over its entire height.
  • the pin 46 has a recess 50.
  • the bulge 48 and the recess 50 are mutually complementary forms. They are able once nested between them to prevent a translation in the horizontal direction of one of the two blades relative to the other blade.
  • the face 43 of the rear tongue 44 facing the front tongue 42 is concave.
  • the face 45 of the pin 46 directed towards the rear of the blade is here convex and of complementary shape to the concave face 43.
  • the rear face of the rear tongue 44 comprises at its end the farthest from the blade a groove 52 extending vertically over more than 90% of its height, and preferably over its entire height.
  • the edge 38 comprises a lamella 54 of generally flat shape which extends outwardly of the blade.
  • This strip 54 comprises a projection 56 which extends vertically over more than 90% of the height of this strip 54, and preferably over the entire height of this strip 54.
  • This projection 56 has a shape complementary to the groove 52 of such a groove 52 and this projection 56 are able, once fitted together, to prevent a translation in the horizontal direction of one of the two blades relative to the other blade.
  • each blade 30 is manufactured by an extrusion process, so that each blade 30 comprises a front wall 60, a rear wall 62 and a set of vertical partitions 64.
  • These vertical partitions 64 mechanically connect the front walls 60 and rear 62.
  • These partitions 64 are perpendicular to the walls, and delimit within the space formed by the front walls 60 and rear 62 a set of cells 66.
  • the rear wall 62 comprises grooves 68, of a depth at most equal to half of the thickness of the rear wall 62, which extend vertically over the entire height of the rear wall 62.
  • These grooves 68 are grouped in pairs, the grooves of each pair being located on either side of a site of junction 70 between the rear wall 62 and a partition 64, so that the distance between the middle of a groove 68 and the middle of said junction site 70 is between 0.5mm and 3mm.
  • This junction site 70 is defined as the segment formed by the orthogonal projection of the partition 64 on the rear face of the blade 30.
  • These grooves 68 allow easy cutting of the blade, for example by means of a cutter. Such a cutting operation is for example necessary when the formwork is used to make the walls of a non-rectilinear basin.
  • the perimeter of the inner perimeter of the formwork is then not necessarily an integer multiple of the width of the blades 30.
  • the rear wall 62 extends over the entire height and width of the blade 30, with the exception of a zone 72 defined by two vertical partitions 67, 69 immediately consecutive in the horizontal direction, where it is absent.
  • the partitions 67 and 69 are not necessarily perpendicular to the front face 32.
  • This zone 72 facilitates the twisting of the blade 30.
  • This zone 72 is preferably arranged closer to the edge 36 than to the edge 38.
  • Each angle 80 has a horizontal leg 82 extending in a normal direction to the rear face 8 to plus or minus 20 °, followed by a vertical leg 84 extending vertically to plus or minus 20 °. These angles 80 are joined to each of the connecting elements 10, so as to extend towards and beyond the rear face 8 of the rear panel 6.
  • the horizontal flexible panel 86 is folded accordionally, so as to form a succession of facets 87 aligned in parallel and interconnected by their longest edge 88. This folding accordion is for example made so that the edges 88 are perpendicular to the rear face 8.
  • This horizontal flexible panel 86 is joined to the horizontal branches 82 of the angles 80, to form the bottom of a gutter.
  • the folds in accordion described previously allow the flexible panel 86 to form the gutter along the outer perimeter of the formwork, whatever the radius of curvature of this circumference.
  • This horizontal flexible panel 86 is advantageously made from the same plate as that used to make the rear panel 6.
  • a vertical panel not shown joins the vertical branches 84 between them to delimit the formwork of the gutter.
  • This gutter is configured to receive liquid concrete to form the channel 106.
  • kit 90 for the realization of the formwork 1.
  • This kit 90 comprises an assembly 91 of components of the front panel 2 or 5 and the rear panel 6 and the connecting elements 10.
  • the slots 20 and 22 are formed in the panel 6.
  • this kit 90 also includes brackets 80 and the panel 86.
  • the hook 12 is carried by the rear end 18 of the spacer 14 and the holding bar 19 has the bulges 11.
  • the hook 13 which can be worn by the end rear 16 of the spacer 14.
  • each angle 80 is bonded to the rear panel 6.
  • the embodiment of the front panel 5, including the interlocking blades 30, 31, can be implemented with other rear panel fastening systems 6 as described herein.
  • the blades 30, 31 can be used independently of the flexible spacers 14 and the main and additional slots 22 and 22.
  • Modular formwork is not limited to the vertical walls of a pool.
  • this formwork is used for the realization of retaining walls or walls of houses.
  • the channel 106 is filled with liquid concrete, so as to achieve a concrete belt, surrounding the basin 100 and configured for the laying of curbs.
  • the front panels 2 or 5 and rear 6 can be folded, so that the periphery of the formwork locally has an acute angle.
  • the connecting element 10 is made in one piece, of a single material, which extends over the entire height of the front panels 5 and rear 6.
  • the rear panel 6 is made of corrugated cardboard.

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  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Forms Removed On Construction Sites Or Auxiliary Members Thereof (AREA)

Description

L'invention concerne un coffrage perdu modulable pour la réalisation de murs verticaux. L'invention concerne également un kit pour la réalisation d'un tel coffrage. L'invention concerne enfin un bassin dont les murs verticaux sont réalisés à l'aide d'un tel coffrage.The invention relates to a modular formwork lost for the realization of vertical walls. The invention also relates to a kit for producing such a formwork. The invention finally relates to a pool whose vertical walls are made using such a formwork.

Il existe de façon connue des coffrages perdus pour la réalisation de murs verticaux de bassins tels que des piscines. Ces coffrages perdus comprennent typiquement un panneau avant orienté vers l'intérieur du bassin, un panneau arrière, et des éléments de liaison reliant le panneau avant au panneau arrière, de façon à ménager entre ces deux panneaux un espace apte à être rempli de béton liquide.There is a known manner of lost forms for the realization of vertical walls of pools such as swimming pools. These lost forms typically comprise a front panel oriented towards the inside of the basin, a rear panel, and connecting elements connecting the front panel to the rear panel, so as to provide between these two panels a space capable of being filled with liquid concrete. .

Certains de ces coffrages sont configurés pour permettre la réalisation de bassins dont les murs peuvent présenter un rayon de courbure quelconque. Le brevet numéro FR2897630 décrit un tel coffrage, dont la paroi arrière est un matériau souple qui peut être adapté à des formes de bassin non-rectilignes. Ce système présente toutefois l'inconvénient d'être compliqué à assembler et nécessite un nombre important de pièces de liaison différentes.Some of these forms are configured to allow the realization of pools whose walls may have any radius of curvature. The patent number FR2897630 describes such a formwork, whose rear wall is a flexible material that can be adapted to non-rectilinear basin shapes. This system however has the disadvantage of being complicated to assemble and requires a large number of different connecting pieces.

Un coffrage selon le préambule de la revendication 1 est connu de document EP 1538273 . coffrages similaires sont aussi connus de

  • WO 2010/094111 A1 ;
  • FR 2 897 378 A1 .
A formwork according to the preamble of claim 1 is known from document EP 1538273 . similar forms are also known from
  • WO 2010/094111 A1 ;
  • FR 2 897 378 A1 .

L'invention vise à résoudre un ou plusieurs de ces inconvénients.The invention aims to solve one or more of these disadvantages.

L'invention porte ainsi sur un coffrage perdu modulable pour la réalisation de murs verticaux conforme à la revendication 1.The invention thus relates to a modular formwork lost for the production of vertical walls according to claim 1.

Ainsi, le coffrage ne nécessite qu'un faible nombre de pièces, est simple à assembler, et permet de réaliser des bassins présentant une forme quelconque.Thus, the formwork requires only a small number of parts, is simple to assemble, and allows for tanks having any shape.

De plus, le fait que l'entretoise soit flexible fait que le panneau arrière peut être joint aux éléments de liaison sans nécessiter d'outil spécifique.In addition, the fact that the spacer is flexible means that the rear panel can be joined to the connecting elements without the need for a specific tool.

Les modes de réalisation de ce coffrage peuvent comporter une ou plusieurs des caractéristiques des revendications dépendantes.Embodiments of this formwork may include one or more of the features of the dependent claims.

Le mode de réalisation du panneau avant fait que ce panneau avant peut être facilement assemblé par emboîtement successif des lames. Du fait de la présence des sillons sur chacune des lames, ces lames peuvent être facilement découpées sur toute leur hauteur. Enfin, la zone entre deux cloisons où est absente la paroi arrière fait que la lame peut être facilement déformée en torsion, ce qui facilite son emboîtement dans une autre lame.The embodiment of the front panel makes that front panel can be easily assembled by successive interlocking blades. Due to the presence of grooves on each of the blades, these blades can be easily cut over their entire height. Finally, the area between two walls where is absent the rear wall makes the blade can be easily deformed in torsion, which facilitates its interlocking in another blade.

L'invention a également pour objet un kit pour la réalisation d'un coffrage conforme à l'invention, comprenant les éléments constitutifs du panneau avant et du panneau arrière et les éléments de liaison.The invention also relates to a kit for producing a formwork according to the invention, comprising the constituent elements of the front panel and the rear panel and the connecting elements.

Enfin, l'invention a pour objet un bassin comprenant de l'eau, un fond et des murs verticaux en béton, dans lequel les murs verticaux sont réalisés par un coffrage conforme à l'invention.Finally, the invention relates to a pool comprising water, a bottom and vertical concrete walls, wherein the vertical walls are made by a formwork according to the invention.

D'autres caractéristiques et avantages de l'invention ressortiront clairement de la description qui en est faite ci-après, à titre indicatif et nullement limitatif, en référence aux dessins annexés, dans lesquels :

  • la figure 1 illustre schématiquement un bassin dont des murs verticaux sont réalisés à l'aide d'un coffrage ;
  • la figure 2 est une vue schématique simplifiée d'une partie du coffrage de la figure 1 ;
  • la figure 3 est une vue schématique en coupe longitudinale d'un élément de liaison joint à un panneau arrière du coffrage de la figure 1 ;
  • la figure 4 est une vue schématique latérale d'un détail de l'élément de liaison de la figure 3 ;
  • la figure 5 est une vue du dessus, schématique et partielle, en coupe transversale, d'un panneau avant joint à un élément de liaison du coffrage de la figure 1 ;
  • la figure 6 est une vue schématique d'un autre mode de réalisation d'un panneau avant ;
  • la figure 7 est une vue en coupe transversale supérieure d'une lame incluse dans un panneau avant du coffrage de la figure 6 ;
  • la figure 8 est une vue schématique d'une cornière jointe sur un élément de liaison pour réaliser un bassin à débordement ;
  • la figure 9 illustre schématiquement un kit pour la réalisation d'un coffrage.
Other characteristics and advantages of the invention will emerge clearly from the description which is given hereinafter, by way of indication and in no way limitative, with reference to the appended drawings, in which:
  • the figure 1 schematically illustrates a basin whose vertical walls are made using a formwork;
  • the figure 2 is a simplified schematic view of a part of the formwork of the figure 1 ;
  • the figure 3 is a schematic view in longitudinal section of a connecting element joined to a rear panel of the formwork of the figure 1 ;
  • the figure 4 is a schematic side view of a detail of the link element of the figure 3 ;
  • the figure 5 is a top view, schematic and partial, in cross section, of a front panel joined to a connecting element of the formwork of the figure 1 ;
  • the figure 6 is a schematic view of another embodiment of a front panel;
  • the figure 7 is an upper cross-sectional view of a blade included in a front panel of the formwork of the figure 6 ;
  • the figure 8 is a schematic view of an angle bracket joined to a connecting element to make an overflow basin;
  • the figure 9 schematically illustrates a kit for producing a formwork.

Dans ces figures, les mêmes références sont utilisées pour désigner les mêmes éléments.In these figures, the same references are used to designate the same elements.

La figure 1 illustre un bassin 100 comprenant de l'eau, un fond 102 et des murs verticaux 104 en béton, réalisés par un coffrage perdu modulable. Avantageusement, ce bassin comporte une rigole 106, configurée pour collecter de l'eau débordant du bassin 100.The figure 1 illustrates a basin 100 comprising water, a bottom 102 and vertical walls 104 of concrete, made by a modular formwork lost. Advantageously, this basin comprises a channel 106, configured to collect water overflowing the basin 100.

Les murs 104 séparent un espace extérieur d'un espace intérieur. Dans cet exemple, le bassin 100 est délimité par les murs 104. L'espace intérieur est l'intérieur du bassin 100 et l'espace extérieur est situé en dehors du bassin 100.The walls 104 separate an outer space from an interior space. In this example, the basin 100 is delimited by the walls 104. The interior space is the interior of the basin 100 and the outside space is located outside the basin 100.

La direction verticale est représentée par la direction y et la direction horizontale est représentée par la direction x. Cette direction horizontale est perpendiculaire à la direction verticale.The vertical direction is represented by the direction y and the horizontal direction is represented by the direction x. This horizontal direction is perpendicular to the vertical direction.

La figure 2 illustre, à titre d'exemple, la partie du coffrage 1 utilisée pour réaliser la portion du mur vertical 104 (ne comprenant ici pas la rigole 106) du bassin 100 désignée par un cercle en pointillés à la figure 1. Cette partie du coffrage 1 suit une trajectoire 101 courbe horizontale, représentée par un trait discontinu sur la figure 2. Cette trajectoire est par exemple composée d'une partie rectiligne parallèle à la direction horizontale, et d'une partie courbe dont le rayon de courbure est par exemple inférieur à 100m et, de préférence, inférieur à 50m.The figure 2 illustrates, for example, the part of the formwork 1 used to make the portion of the vertical wall 104 (here not including the channel 106) of the basin 100 designated by a dotted circle at the figure 1 . This part of the formwork 1 follows a trajectory 101 horizontal curve, represented by a dashed line on the figure 2 . This trajectory is for example composed of a rectilinear part parallel to the horizontal direction, and a curved part whose radius of curvature is for example less than 100m and, preferably, less than 50m.

Cette partie du coffrage 1 comprend :

  • un panneau avant 2, dont une face avant 4 essentiellement plane est orientée vers l'intérieur du bassin ;
  • un panneau arrière 6 dont une face arrière 8 est tournée vers l'extérieur du bassin et délimite le pourtour extérieur du coffrage ; et :
  • des éléments de liaison 10, répartis le long du pourtour du coffrage. Pour simplifier, seuls trois éléments de liaison 10 ont été représentés sur la figure 2.
This part of the formwork 1 comprises:
  • a front panel 2, a front face 4 substantially flat is oriented towards the inside of the basin;
  • a rear panel 6 of which a rear face 8 is turned towards the outside of the basin and defines the outer circumference of the formwork; and
  • connecting elements 10, distributed along the periphery of the formwork. For simplicity, only three connecting elements 10 have been represented on the figure 2 .

Chacun de ces éléments de liaison 10 relie le panneau avant 2 au panneau arrière 6, de sorte à ménager entre les deux panneaux un espace 9 apte à être rempli de béton liquide. Ces éléments de liaison 10 sont parallèles et séparés d'une distance d lorsque le coffrage s'étend de façon rectiligne le long de la direction horizontale. Cette distance d correspond à la distance dans la direction horizontale entre deux points de fixation consécutifs du panneau avant 2 à un élément de liaison 10. Cette distance d est par exemple supérieure à 2cm et inférieure à 30cm, et de préférence supérieure à 5cm et inférieure à 25cm.Each of these connecting elements 10 connects the front panel 2 to the rear panel 6, so as to provide between the two panels a space 9 adapted to be filled with liquid concrete. These connecting elements 10 are parallel and separated by a distance d when the formwork extends rectilinearly along the horizontal direction. This distance d corresponds to the distance in the horizontal direction between two consecutive attachment points of the front panel 2 to a connecting element 10. This distance d is for example greater than 2 cm and less than 30 cm, and preferably greater than 5 cm and less at 25cm.

Chaque élément de liaison 10 comprend au moins un crochet de fixation 12 du panneau arrière 6, et au moins une entretoise 14. Chaque entretoise 14 s'étend entre une extrémité avant 16 et une extrémité arrière 18, en appui contre, respectivement, le panneau avant 2 et le panneau arrière 6.Each connecting element 10 comprises at least one attachment hook 12 of the rear panel 6, and at least one spacer 14. Each spacer 14 extends between a front end 16 and a rear end 18, resting against, respectively, the panel front 2 and rear panel 6.

Le panneau arrière 6 comprend un ensemble de fentes principales 20 traversantes. Chaque fente 20 est apte à être traversée par le crochet de fixation 12. Ces fentes 20 sont espacées régulièrement dans la direction horizontale le long du panneau arrière 6. L'écartement entre deux fentes principales 20 consécutives est égal à la distance d, à ±5% ou ±2% près.The rear panel 6 comprises a set of main through slots 20. Each slot 20 is able to be traversed by the fixing hook 12. These slots 20 are evenly spaced in the horizontal direction along the rear panel 6. The spacing between two consecutive main slots 20 is equal to the distance d, ± 5% or ± 2%.

Des fentes additionnelles traversantes 22 sont ménagées dans ce panneau arrière 6, de part et d'autre de chacune des fentes principales 20, dans la direction horizontale. Ici, l'intervalle entre deux fentes principales 20 est rempli de fentes additionnelles 22. L'écartement e entre deux quelconques des fentes immédiatement consécutives dans la direction horizontale est compris entre 7mm et 35mm. Avantageusement, cet écartement e est compris entre 9mm et 25mm. Encore plus avantageusement, cet écartement e est compris entre 10mm et 20mm.Additional through slots 22 are formed in this rear panel 6, on either side of each of the main slots 20, in the horizontal direction. Here, the gap between two main slots 20 is filled with additional slots 22. The spacing e between any two of the immediately consecutive slots in the horizontal direction is between 7mm and 35mm. Advantageously, this spacing e is between 9mm and 25mm. Even more advantageously, this spacing e is between 10mm and 20mm.

Avantageusement, le panneau arrière 6 comprend plusieurs ensembles de fentes 20 et 22, s'étendant le long de directions horizontales parallèles entre elles. Pour simplifier la figure 1, seul un ensemble de fentes est représenté. Ces ensembles sont séparés deux à deux verticalement, d'une distance la plus courte mesurée entre le centre d'une fente d'un ensemble et le milieu de la fente respective de l'autre ensemble. Cette distance est par exemple supérieure à 10cm et inférieure à 30cm. De préférence, cette distance est supérieure à 15cm et inférieure à 25cm.Advantageously, the rear panel 6 comprises several sets of slots 20 and 22, extending along horizontal directions parallel to each other. To simplify the figure 1 only one set of slots is shown. These sets are separated vertically two by two, with the shortest distance measured between the center of a slot of one set and the middle of the respective slot of the other together. This distance is for example greater than 10 cm and less than 30 cm. Preferably, this distance is greater than 15 cm and less than 25 cm.

Typiquement, les fentes principales 20 et additionnelles 22 sont identiques. Aussi, pour simplifier la description, seule une fente principale 20 est décrite en détail dans ce qui suit.Typically, the main and additional slots 22 are identical. Also, to simplify the description, only a main slot 20 is described in detail in the following.

La hauteur de la fente 20 est avantageusement supérieure à 5mm et, de préférence, supérieure à 20mm. La hauteur de cette fente 20 est inférieure à 10cm et, de préférence, inférieure à 30mm. Cette fente 20 est par exemple ménagée dans le panneau arrière par incision. Elle est avantageusement étanche au béton liquide.The height of the slot 20 is advantageously greater than 5 mm and preferably greater than 20 mm. The height of this slot 20 is less than 10 cm and preferably less than 30 mm. This slot 20 is for example made in the rear panel by incision. It is advantageously waterproof to liquid concrete.

Le panneau arrière est réalisé dans un matériau souple dont le module de Young est inférieur à 5GPa. De préférence, le module de Young du matériau du panneau 6 est supérieur à 0,01 ou 0,1 GPa.The rear panel is made of a flexible material whose Young's modulus is less than 5GPa. Preferably, the Young's modulus of panel material 6 is greater than 0.01 or 0.1 GPa.

Ce panneau arrière 6 est par exemple une plaque alvéolée de polypropylène, d'épaisseur comprise entre 1 mm et 2cm, et préférentiellement comprise entre 2mm et 15mm.This rear panel 6 is for example a corrugated polypropylene plate, with a thickness of between 1 mm and 2 cm, and preferably between 2 mm and 15 mm.

L'extrémité arrière 18 de chaque entretoise 14 est déplaçable à la main d'une position de repos 15, illustrée en pointillés sur la figure 1, vers une position décalée 17. Dans la position de repos 15, les extrémités avant 16 et arrière 18 de l'entretoise sont alignées sur un axe perpendiculaire au panneau avant 2. Dans la position décalée 17, l'extrémité arrière 18 est écartée, dans la direction horizontale, de sa position de repos 15 par une distance au moins égale à e/2 et, de préférence, supérieure ou égale à e.The rear end 18 of each spacer 14 is movable by hand from a rest position 15, shown in dashed lines on the figure 1 to a staggered position 17. In the rest position 15, the front 16 and rear 18 ends of the spacer are aligned on an axis perpendicular to the front panel 2. In the staggered position 17, the rear end 18 is spaced apart, in the horizontal direction, from its rest position 15 by a distance at least equal to e / 2 and, preferably, greater than or equal to e.

La figure 2 schématise l'utilisation de l'entretoise 14. Dans cet exemple, les éléments de liaison 10 situés respectivement à gauche et au milieu de la figure sont alignées suivant la direction horizontale le long de la portion rectiligne de la trajectoire 101. La distance séparant ces deux éléments de liaison 10 est égale à d. Du fait de la courbure des panneaux avant 2 et arrière 6, l'élément de liaison situé à droite de la figure 2 n'est pas aligné avec les éléments de liaison précédents. Afin que l'extrémité arrière 18 de l'entretoise 14 de cet élément liaison 10 soit en vis-à-vis avec une fente 20 ou 22 du panneau arrière 6, cette entretoise 14 est déplacée de sa position de repos 15 vers sa position décalée 17. Ainsi, l'extrémité 18 est ensuite insérée dans une fente additionnelle 22. Cela permet de réaliser le coffrage pour un bassin ayant un rayon de courbure quelconque.The figure 2 schematically the use of the spacer 14. In this example, the connecting elements 10 respectively located on the left and in the middle of the figure are aligned in the horizontal direction along the rectilinear portion of the trajectory 101. The distance between these two connecting elements 10 is equal to d. Due to the curvature of the front panels 2 and rear 6, the connecting element located to the right of the figure 2 is not aligned with the previous link elements. So that the rear end 18 of the spacer 14 of this connecting element 10 is in facing relation with a slot 20 or 22 of the rear panel 6, this spacer 14 is moved from its rest position 15 to its offset position. 17. Thus, the end 18 is then inserted into an additional slot 22. This allows for the formwork for a basin having any radius of curvature.

La figure 3 illustre un exemple d'élément de liaison 10 et d'une entretoise 14, lorsque elle est dans sa position de repos 15. Cette entretoise 14 a par exemple, une forme plane et oblongue s'étendant dans un plan vertical normal au panneau avant. La longueur de cette entretoise 14, définie comme la distance entre les extrémités avant 16 et arrière 18, est par exemple supérieure à 10cm et, de préférence, supérieure à 15cm. Cette longueur est par exemple inférieure à 30cm et, de préférence inférieure à 25cm. Cette entretoise 14 comprend par exemple une partie centrale de forme parallélépipédique rectangle 25, s'étendant sur au moins 50% de sa longueur, et deux évasements rectangulaires 26 et 28, disposés dans le prolongement de cette partie centrale 25. Ces deux évasements 26 et 28 sont terminés respectivement par les extrémités avant 16 et arrière 18. La hauteur de la partie centrale 25, mesurée selon la direction verticale, est par exemple supérieure à 1cm et inférieure à 15cm, et préférentiellement comprise entre 3cm et 8cm. La hauteur d'une de ses extrémités 16 ou 18 selon la direction verticale est comprise entre une et trois fois la hauteur de la partie centrale 25. L'épaisseur de la partie centrale dans la direction horizontale est au moins dix ou cinquante fois inférieure à la longueur de l'entretoise 14.The figure 3 illustrates an example of connecting element 10 and a spacer 14, when in its rest position 15. This spacer 14 has for example a planar and oblong shape extending in a vertical plane normal to the front panel. The length of this spacer 14, defined as the distance between the front ends 16 and rear 18, is for example greater than 10 cm and preferably greater than 15 cm. This length is for example less than 30 cm and preferably less than 25 cm. This spacer 14 comprises for example a part central rectangular parallelepiped shape 25, extending over at least 50% of its length, and two rectangular flares 26 and 28, arranged in the extension of this central portion 25. These two flares 26 and 28 are terminated respectively by the front ends 16 and rear 18. The height of the central portion 25, measured in the vertical direction, is for example greater than 1cm and less than 15cm, and preferably between 3cm and 8cm. The height of one of its ends 16 or 18 in the vertical direction is between one and three times the height of the central portion 25. The thickness of the central portion in the horizontal direction is at least ten or fifty times less than the length of the spacer 14.

Avantageusement, l'entretoise 14 est symétrique par rapport à un plan vertical s'étendant dans la direction horizontale.Advantageously, the spacer 14 is symmetrical with respect to a vertical plane extending in the horizontal direction.

Ici, l'entretoise 14 est flexible dans la direction horizontale. Le produit E.ly de son moment quadratique Iy calculé dans la direction d'un axe vertical passant par son point de fixation sur le panneau avant, avec son module de Young E est avantageusement compris entre 1N.m2 et 50N.m2. Encore plus avantageusement, ce produit E.ly est compris entre 5N.m2 et 30N.m2.Here, the spacer 14 is flexible in the horizontal direction. The product El y of its quadratic moment I y calculated in the direction of a vertical axis passing through its attachment point on the front panel, with its Young's modulus E is advantageously between 1 Nm 2 and 50 Nm 2 . Even more advantageously, this product El y is between 5Nm 2 and 30N.m 2 .

Avantageusement, cette entretoise 14 est réalisée en polypropylène.Advantageously, this spacer 14 is made of polypropylene.

L'élément de liaison 10 comprend une barre de maintien 19. Cette barre de maintien 19 est de forme oblongue et s'étend dans la direction verticale. Ici, la barre de maintien 19 comprend au moins un crochet 12. Chaque crochet 12 est configuré pour traverser les fentes 20 ou 22 du panneau arrière 6. L'extrémité arrière 18 de l'entretoise 14 comporte au moins une cavité 27 et un renflement 11 ménagé dans la cavité 27. La cavité 27 est configurée pour recevoir le crochet 12. La seule ouverture de cette cavité 27 débouche dans l'extrémité en appui sur le panneau arrière 6. Cette ouverture est suffisamment grande pour permettre le retrait du crochet 12. L'entretoise comporte également des lèvres 29 qui bordent la périphérie de cette ouverture. Ces lèvres 29 sont en appui sur le panneau arrière 6 pour empêcher le béton de pénétrer à l'intérieur de la cavité 27. Le renflement 11 est de forme complémentaire au crochet 12 et est apte à retenir ce crochet 12 à l'intérieur de la cavité 27 par coopération de forme. Le détail de cette partie de l'élément de liaison 10 est illustré sur la figure 4, en l'absence du panneau arrière 6. L'entretoise 14 comprend également au moins un couvercle 27c. Ce couvercle 27c est déplaçable, par rabattement, entre une position ouverte (illustrée sur la figure 4) et une position fermée. Dans la position fermée, ce couvercle 27c recouvre la cavité 27.The connecting element 10 comprises a holding bar 19. This holding bar 19 is of oblong shape and extends in the vertical direction. Here, the holding bar 19 comprises at least one hook 12. Each hook 12 is configured to pass through the slots 20 or 22 of the rear panel 6. The rear end 18 of the spacer 14 has at least one cavity 27 and a bulge 11 The cavity 27 is configured to receive the hook 12. The only opening of the cavity 27 opens into the end bearing on the rear panel 6. This opening is large enough to allow the withdrawal of the hook 12 The spacer also has lips 29 which border the periphery of this opening. These lips 29 are supported on the rear panel 6 to prevent the concrete from entering the interior of the cavity 27. The bulge 11 is of complementary shape to the hook 12 and is able to retain the hook 12 inside the cavity 27 by form cooperation. The detail of this part of the connecting element 10 is illustrated on the figure 4 , in the absence of the rear panel 6. The spacer 14 also comprises at least one cover 27c. This cover 27c is movable, by folding, between an open position (illustrated on the figure 4 ) and a closed position. In the closed position, this cover 27c covers the cavity 27.

Avantageusement, l'élément de liaison 10 comprend plusieurs entretoises 14. Ces entretoises 14 sont par exemple superposées l'une au dessus de l'autre dans la direction verticale. L'élément de liaison 10 comprend également une plaque verticale 23. Cette plaque verticale 23 est jointe aux entretoises 14.Advantageously, the connecting element 10 comprises several spacers 14. These spacers 14 are for example superimposed one above the other in the vertical direction. The connecting element 10 also comprises a vertical plate 23. This vertical plate 23 is joined to the spacers 14.

La figure 5 illustre un exemple du panneau avant 2 du coffrage. Ce panneau avant 2 comprend une paroi souple 3, identique au panneau arrière 6. Cette paroi souple 3 est jointe aux éléments de liaison 10 à l'aide d'un crochet 13 qui traverse une fente principale 20 de la paroi souple 3. Ce panneau avant comprend également des plaques rigides 24 plaquées contre la paroi 3. Ces plaques rigides 24 sont intercalées entre la paroi souple 3 et une barre de maintien 21. Ces plaques rigides 24 forment la face avant 4 du panneau avant 2. Ces plaques rigides 24 sont aptes à renforcer la tenue mécanique du panneau avant 2 en présence de béton liquide. Avantageusement, l'épaisseur de chaque plaque 24 est supérieure à 5mm et, encore plus avantageusement, supérieure à 25mm. Cette épaisseur est avantageusement inférieure à 10cm et, encore plus avantageusement, inférieure à 5cm. Ces plaques rigides 24 sont par exemple en carton.The figure 5 illustrates an example of the front panel 2 of the formwork. This front panel 2 comprises a flexible wall 3, identical to the rear panel 6. This flexible wall 3 is joined to the connecting elements 10 by means of a hook 13 which passes through a main slot 20 of the flexible wall 3. This panel front also includes rigid plates 24 pressed against the wall 3. These rigid plates 24 are interposed between the flexible wall 3 and a retaining bar 21. These rigid plates 24 form the front face 4 of the front panel 2. These rigid plates 24 are capable of reinforcing the mechanical strength of the front panel 2 in the presence of liquid concrete. Advantageously, the thickness of each plate 24 is greater than 5 mm and, even more advantageously, greater than 25 mm. This thickness is advantageously less than 10 cm and even more advantageously less than 5 cm. These rigid plates 24 are for example cardboard.

Le crochet 13 est relié à l'entretoise de la même manière que le crochet 12. Ici, les crochets 13 sont identiques aux crochets 12. Ici, l'extrémité avant 16 de l'entretoise 14 comprend une cavité, des lèvres et un renflement respectivement symétriques à la cavité 27, aux lèvres 29 et au renflement 11 de l'extrémité avant 18 de l'entretoise 14 et assurant la même fonction. Ces lèvres sont en appui sur le panneau avant 2 pour empêcher le béton de pénétrer à l'intérieur de cette cavité. Cela permet de retirer le panneau avant 2 après la réalisation du mur vertical.The hook 13 is connected to the spacer in the same manner as the hook 12. Here, the hooks 13 are identical to the hooks 12. Here, the front end 16 of the spacer 14 comprises a cavity, lips and a bulge respectively symmetrical to the cavity 27, the lips 29 and the bulge 11 of the front end 18 of the spacer 14 and providing the same function. These lips are supported on the front panel 2 to prevent the concrete from entering the interior of this cavity. This removes the front panel 2 after the completion of the vertical wall.

Les figures 6 et 7 illustrent un autre mode de réalisation d'un panneau avant 5 du coffrage, susceptible d'être utilisé en lieu et place du panneau avant 2 décrit précédemment. Ce panneau avant 5 est formé par emboîtement d'une succession de lames les unes dans les autres. Pour simplifier, la figure 5 ne représente que deux lames 30 et 31. Ici, la lame 30 est jointe à un élément de liaison 7. Les éléments de liaison 7 remplissent la même fonction que les éléments de liaison 10. Ici, ils sont identiques aux éléments de liaison 10 sauf que leur extrémité avant est conformée pour s'encastrer dans une glissière 39 des lames 30 ou 31.The figures 6 and 7 illustrate another embodiment of a front panel 5 of the formwork, may be used instead of the front panel 2 described above. This front panel 5 is formed by interlocking a succession of blades in each other. For simplicity, the figure 5 represents only two blades 30 and 31. Here, the blade 30 is joined to a connecting element 7. The connecting elements 7 fulfill the same function as the connecting elements 10. Here, they are identical to the connecting elements 10 except that their front end is shaped to fit into a slide 39 of the blades 30 or 31.

De préférence, les lames 30 et 31 sont identiques. Aussi, seule la lame 30 est décrite en détail dans le texte qui suit.Preferably, the blades 30 and 31 are identical. Also, only the blade 30 is described in detail in the text that follows.

Cette lame 30 est rigide, de forme générale parallélépipédique rectangle. Elle comprend une face avant 32 (figure 7) tournée vers l'intérieur du bassin, une face arrière 34, deux chants verticaux 36 et 38 et au moins une glissière 39. Les faces avant 32 et arrière 34 s'étendent essentiellement dans des plans parallèles verticaux. La glissière 39 permet de solidariser la lame 30 à l'élément de liaison 7. Cette glissière 39 est située sur la face arrière 34 de la lame. Elle s'étend sur au moins 50% de la hauteur de la lame, et de préférence sur au moins 90% de sa hauteur. Une rainure 40 est ménagée verticalement sur toute la hauteur du chant vertical 36. Cette rainure 40 partage le chant 36 en une languette avant 42 et une languette arrière 44. Ces languettes avant 42 et arrière 44 sont disposées en vis-à-vis et, respectivement, dans le prolongement des faces avant 32 et arrière 34 de la lame 30. La languette arrière 44 est plus longue que la languette avant 42 d'au moins 1 mm dans la direction horizontale. Avantageusement, la longueur de la languette arrière 44 est supérieure ou égale à deux ou 1,5 fois la longueur de la languette avant 42. Le chant vertical 38 comprend sur plus de 90% de sa hauteur, et de préférence sur toute sa hauteur, un tenon 46 de forme complémentaire à la rainure 40 ménagée dans le chant vertical 36. Ce tenon 46 est configuré pour être emboîté dans cette rainure 40 par un mouvement de pivotement dont l'amplitude angulaire est supérieure à 10°, 25° ou 45°.This blade 30 is rigid, generally rectangular parallelepiped shape. It comprises a front face 32 ( figure 7 ) facing towards the inside of the basin, a rear face 34, two vertical edges 36 and 38 and at least one slide 39. The front 32 and rear 34 faces extend essentially in vertical parallel planes. The slide 39 makes it possible to secure the blade 30 to the connecting element 7. This slide 39 is situated on the rear face 34 of the blade. It extends over at least 50% of the height of the blade, and preferably over at least 90% of its height. A groove 40 is formed vertically over the entire height of the vertical edge 36. This groove 40 shares the edge 36 in a front tongue 42 and a rear tongue 44. These front tabs 42 and rear 44 are arranged vis-à-vis and, respectively, in the extension of the front 32 and rear 34 of the blade 30. The tongue rear 44 is longer than the front tongue 42 of at least 1 mm in the horizontal direction. Advantageously, the length of the rear tongue 44 is greater than or equal to two or 1.5 times the length of the tongue before 42. The vertical edge 38 comprises over 90% of its height, and preferably over its entire height, a post 46 of complementary shape to the groove 40 formed in the vertical edge 36. This post 46 is configured to be fitted into this groove 40 by a pivoting movement whose angular amplitude is greater than 10 °, 25 ° or 45 ° .

Ainsi, la seconde lame peut être emboîtée avec la première lame, à la manière de lames de parquet, comme illustré à la figure 5. Le panneau avant 5 du coffrage est ainsi réalisé par emboîtement successif de lames 30 et 31, formant le pourtour intérieur du coffrage.Thus, the second blade can be nested with the first blade, in the manner of floorboards, as illustrated in FIG. figure 5 . The front panel 5 of the formwork is thus formed by successive interlocking of the blades 30 and 31, forming the inner periphery of the formwork.

Avantageusement, ces lames 30 et 31 comprennent des dispositifs de verrouillage, configurés pour prévenir une translation dans la direction horizontale d'une des deux lames par rapport à l'autre lame une fois ces deux lames emboîtés entre elles. Ainsi, la languette avant 42 comprend sur sa face tournée vers la languette arrière 44 un renflement 48 qui s'étend verticalement sur plus de 90% de sa hauteur, et de préférence sur toute sa hauteur. Le tenon 46 comporte un renfoncement 50. Le renflement 48 et le renfoncement 50 sont de formes mutuellement complémentaires. Ils sont aptes une fois emboîtés entre eux à prévenir une translation dans la direction horizontale d'une des deux lames par rapport à l'autre lame.Advantageously, these blades 30 and 31 comprise locking devices, configured to prevent translation in the horizontal direction of one of the two blades relative to the other blade once these two blades interlocked with each other. Thus, the front tongue 42 comprises on its side facing the rear tongue 44 a bulge 48 which extends vertically over 90% of its height, and preferably over its entire height. The pin 46 has a recess 50. The bulge 48 and the recess 50 are mutually complementary forms. They are able once nested between them to prevent a translation in the horizontal direction of one of the two blades relative to the other blade.

Avantageusement, la face 43 de la languette arrière 44 tournée vers la languette avant 42 est concave. La face 45 du tenon 46 dirigée vers l'arrière de la lame est ici convexe et de forme complémentaire à la face concave 43. Ainsi ces faces, une fois emboîtées entre elles, sont aptes à prévenir une translation dans la direction horizontale d'une des deux lames par rapport à l'autre lame.Advantageously, the face 43 of the rear tongue 44 facing the front tongue 42 is concave. The face 45 of the pin 46 directed towards the rear of the blade is here convex and of complementary shape to the concave face 43. Thus these faces, once fitted together, are able to prevent a translation in the horizontal direction of a of the two blades relative to the other blade.

Avantageusement, la face arrière de la languette arrière 44 comprend en son extrémité la plus distante de la lame une rainure 52 s'étendant verticalement sur plus de 90% de sa hauteur, et de préférence sur toute sa hauteur. Le chant 38 comprend une lamelle 54 de forme globalement plane qui s'étend vers l'extérieur de la lame. Cette lamelle 54 comprend une saillie 56 qui s'étend verticalement, sur plus de 90% de la hauteur de cette lamelle 54, et de préférence sur toute la hauteur de cette lamelle 54. Cette saillie 56 possède une forme complémentaire de la rainure 52 de manière à s'emboîter dans ladite rainure 52. Cette rainure 52 et cette saillie 56 sont aptes, une fois emboîtées entre elles, à prévenir une translation dans la direction horizontale d'une des deux lames par rapport à l'autre lame.Advantageously, the rear face of the rear tongue 44 comprises at its end the farthest from the blade a groove 52 extending vertically over more than 90% of its height, and preferably over its entire height. The edge 38 comprises a lamella 54 of generally flat shape which extends outwardly of the blade. This strip 54 comprises a projection 56 which extends vertically over more than 90% of the height of this strip 54, and preferably over the entire height of this strip 54. This projection 56 has a shape complementary to the groove 52 of such a groove 52 and this projection 56 are able, once fitted together, to prevent a translation in the horizontal direction of one of the two blades relative to the other blade.

Avantageusement, la lame 30 est fabriquée par un procédé d'extrusion, de sorte que chaque lame 30 comprend une paroi avant 60, une paroi arrière 62 et un ensemble de cloisons verticales 64. Ces cloisons verticales 64 relient mécaniquement les parois avant 60 et arrière 62. Ces cloisons 64 sont perpendiculaires aux parois, et délimitent à l'intérieur de l'espace formé par les parois avant 60 et arrière 62 un ensemble d'alvéoles 66. La paroi arrière 62 comprend des sillons 68, d'une profondeur au plus égale à la moitié de l'épaisseur de la paroi arrière 62, qui s'étendent verticalement sur toute la hauteur de cette paroi arrière 62. Ces sillons 68 sont groupés par paires, les sillons de chaque paire étant situés de part et d'autre d'un site de jonction 70 entre la paroi arrière 62 et une cloison 64, de telle sorte que la distance entre le milieu d'un sillon 68 et le milieu dudit site de jonction 70 est comprise entre 0,5mm et 3mm. Ce site de jonction 70 est défini comme le segment formé par la projection orthogonale de la cloison 64 sur la face arrière de la lame 30. Ces sillons 68 permettent une découpe aisée de la lame, par exemple à l'aide d'un cutter. Une telle opération de découpe est par exemple nécessaire lorsque le coffrage est utilisé pour réaliser les parois d'un bassin non rectiligne. Le périmètre du pourtour intérieur du coffrage n'est alors pas nécessairement un multiple entier de la largeur des lames 30. Il subsiste dans ce cas un espace libre entre deux lames formant le panneau avant 5, espace dont la largeur est insuffisante pour y loger une autre lame entière. Cette autre lame est alors découpée, sur toute sa longueur, en ne conservant que deux morceaux comprenant les chants 36 et 38. Ces deux morceaux sont ensuite collés pour former une nouvelle lame dont la longueur correspond à celle de l'espace libre dans le coffrage.Advantageously, the blade 30 is manufactured by an extrusion process, so that each blade 30 comprises a front wall 60, a rear wall 62 and a set of vertical partitions 64. These vertical partitions 64 mechanically connect the front walls 60 and rear 62. These partitions 64 are perpendicular to the walls, and delimit within the space formed by the front walls 60 and rear 62 a set of cells 66. The rear wall 62 comprises grooves 68, of a depth at most equal to half of the thickness of the rear wall 62, which extend vertically over the entire height of the rear wall 62. These grooves 68 are grouped in pairs, the grooves of each pair being located on either side of a site of junction 70 between the rear wall 62 and a partition 64, so that the distance between the middle of a groove 68 and the middle of said junction site 70 is between 0.5mm and 3mm. This junction site 70 is defined as the segment formed by the orthogonal projection of the partition 64 on the rear face of the blade 30. These grooves 68 allow easy cutting of the blade, for example by means of a cutter. Such a cutting operation is for example necessary when the formwork is used to make the walls of a non-rectilinear basin. The perimeter of the inner perimeter of the formwork is then not necessarily an integer multiple of the width of the blades 30. There remains in this case a free space between two blades forming the front panel 5, space whose width is insufficient to accommodate a other whole blade. This other blade is then cut, along its length, keeping only two pieces including the edges 36 and 38. These two pieces are then glued to form a new blade whose length corresponds to that of the free space in the formwork .

Avantageusement, la paroi arrière 62 s'étend sur toute la hauteur et la largeur de la lame 30, à l'exception d'une zone 72 délimitée par deux cloisons verticales 67, 69 immédiatement consécutives dans la direction horizontale, où elle est absente. Les cloisons 67 et 69 ne sont pas nécessairement perpendiculaires à la face avant 32. Cette zone 72 facilite la torsion de la lame 30. Cette zone 72 est préférentiellement ménagée plus proche du chant 36 que du chant 38.Advantageously, the rear wall 62 extends over the entire height and width of the blade 30, with the exception of a zone 72 defined by two vertical partitions 67, 69 immediately consecutive in the horizontal direction, where it is absent. The partitions 67 and 69 are not necessarily perpendicular to the front face 32. This zone 72 facilitates the twisting of the blade 30. This zone 72 is preferably arranged closer to the edge 36 than to the edge 38.

La figure 8 illustre un moyen de réaliser les rigoles 106 du bassin 100. Ce moyen comprend notamment:

  • des cornières 80 fixées sur la face arrière 8 du panneau arrière 6 ;
  • un panneau souple horizontal 86.
The figure 8 illustrates a way of making the channels 106 of the basin 100. This means comprises in particular:
  • angles 80 fixed on the rear face 8 of the rear panel 6;
  • a horizontal flexible panel 86.

Chaque cornière 80 présente une branche horizontale 82 s'étendant dans une direction normale à la face arrière 8 à plus ou moins 20° près, suivie d'une branche verticale 84 s'étendant verticalement à plus ou moins 20° près. Ces cornières 80 sont jointes à chacun des éléments de liaison 10, de manière à s'étendre vers et au-delà de la face arrière 8 du panneau arrière 6.Each angle 80 has a horizontal leg 82 extending in a normal direction to the rear face 8 to plus or minus 20 °, followed by a vertical leg 84 extending vertically to plus or minus 20 °. These angles 80 are joined to each of the connecting elements 10, so as to extend towards and beyond the rear face 8 of the rear panel 6.

Le panneau souple horizontal 86 est plié en accordéon, de sorte à former une succession de facettes 87 alignées parallèlement et reliées entre elles par leur arête la plus longue 88. Ce pliage en accordéon est par exemple réalisé de façon à ce que les arêtes 88 soient perpendiculaires à la face arrière 8.The horizontal flexible panel 86 is folded accordionally, so as to form a succession of facets 87 aligned in parallel and interconnected by their longest edge 88. This folding accordion is for example made so that the edges 88 are perpendicular to the rear face 8.

Ce panneau souple horizontal 86 est joint aux branches horizontales 82 des cornières 80, pour former le fond d'une gouttière. Les plis en accordéon décrits précédemment permettent au panneau souple 86 de former cette gouttière le long du pourtour extérieur du coffrage, quelque soit le rayon de courbure de ce pourtour. Ce panneau souple horizontal 86 est avantageusement réalisé à partir de la même plaque que celle utilisée pour réaliser le panneau arrière 6.This horizontal flexible panel 86 is joined to the horizontal branches 82 of the angles 80, to form the bottom of a gutter. The folds in accordion described previously allow the flexible panel 86 to form the gutter along the outer perimeter of the formwork, whatever the radius of curvature of this circumference. This horizontal flexible panel 86 is advantageously made from the same plate as that used to make the rear panel 6.

Un panneau vertical non représenté rejoint entre elles les branches verticales 84 pour délimiter le coffrage de la gouttière. Cette gouttière est configurée pour recevoir du béton liquide pour former la rigole 106.A vertical panel not shown joins the vertical branches 84 between them to delimit the formwork of the gutter. This gutter is configured to receive liquid concrete to form the channel 106.

La figure 9 schématise un kit 90 pour la réalisation du coffrage 1. Ce kit 90 comprend un ensemble 91 d'éléments constitutifs du panneau avant 2 ou 5 et du panneau arrière 6 et les éléments de liaison 10. Les fentes 20 et 22 sont ménagées dans le panneau arrière 6. Avantageusement, ce kit 90 comprend également des cornières 80 et le panneau 86.The figure 9 schematically a kit 90 for the realization of the formwork 1. This kit 90 comprises an assembly 91 of components of the front panel 2 or 5 and the rear panel 6 and the connecting elements 10. The slots 20 and 22 are formed in the panel 6. Advantageously, this kit 90 also includes brackets 80 and the panel 86.

De nombreux autres modes de réalisation sont possibles.Many other embodiments are possible.

Par exemple, en variante, le crochet 12 est porté par l'extrémité arrière 18 de l'entretoise 14 et la barre de maintien 19 comporte les renflements 11. Il en va de même pour le crochet 13 qui peut être porté par l'extrémité arrière 16 de l'entretoise 14.For example, alternatively, the hook 12 is carried by the rear end 18 of the spacer 14 and the holding bar 19 has the bulges 11. The same applies to the hook 13 which can be worn by the end rear 16 of the spacer 14.

En variante, chaque cornière 80 est collée sur le panneau arrière 6.In a variant, each angle 80 is bonded to the rear panel 6.

Le mode de réalisation du panneau avant 5, comprenant les lames 30, 31 emboîtables, peut être mis en oeuvre avec d'autres systèmes d'attache du panneau arrière 6 que celui décrit ici. En particulier, les lames 30, 31 peuvent être utilisées indépendamment des entretoises flexibles 14 et des fentes principales 20 et additionnelles 22.The embodiment of the front panel 5, including the interlocking blades 30, 31, can be implemented with other rear panel fastening systems 6 as described herein. In particular, the blades 30, 31 can be used independently of the flexible spacers 14 and the main and additional slots 22 and 22.

Le coffrage perdu modulable n'est pas limité à la réalisation de murs verticaux d'un bassin. Par exemple, en variante, ce coffrage est utilisé pour la réalisation de murs de soutènement ou de murs de maisons.Modular formwork is not limited to the vertical walls of a pool. For example, alternatively, this formwork is used for the realization of retaining walls or walls of houses.

En variante, la rigole 106 est remplie de béton liquide, de manière à réaliser une ceinture de béton, entourant le bassin 100 et configurée pour la pose de margelles.Alternatively, the channel 106 is filled with liquid concrete, so as to achieve a concrete belt, surrounding the basin 100 and configured for the laying of curbs.

Avantageusement, les panneaux avant 2 ou 5 et arrière 6 peuvent être pliés, de manière à ce que le pourtour du coffrage présente localement un angle aigu.Advantageously, the front panels 2 or 5 and rear 6 can be folded, so that the periphery of the formwork locally has an acute angle.

Avantageusement, l'élément de liaison 10 est réalisé en une seule pièce, d'une seule matière, qui s'étend sur toute la hauteur des panneaux avant 5 et arrière 6.Advantageously, the connecting element 10 is made in one piece, of a single material, which extends over the entire height of the front panels 5 and rear 6.

En variante, le panneau arrière 6 est en carton ondulé.In a variant, the rear panel 6 is made of corrugated cardboard.

Claims (13)

  1. Permanent formwork for the production of vertical walls for separating an inner space from an outer space, this permanent formwork comprising:
    - a front panel (2) of which an essentially planar front face (4) is oriented towards the inner space;
    - a flexible rear panel (6) of which a face (8) is directed towards the outer space and delimits the outer periphery of the formwork;
    - at least two connection elements (10) distributed along the periphery of the formwork, each connecting the front panel (2) to the rear panel (6) so as to form between the said panels a space (9) able to be filled with liquid concrete, these connection elements (10) being parallel and separated by a distance d when the permanent formwork extends rectilinearly along a horizontal direction, each of these connection elements (10) comprising:
    • at least one hook (12) for fastening the rear panel (6);
    • at least one spacer (14) extending between front (16) and rear (18) ends bearing respectively against the front panel (2) and the rear panel (6);
    - a set of main through-slots (20) formed in the rear panel, the spacing between two main slots, which are consecutive in the horizontal direction, being equal to the distance d to within ±5%, each slot (20) being able to be traversed by the fastening hook (12) of the respective connection element (10);
    characterized in that:
    - additional through-slots (22) are formed in the rear panel (6), on either side of each of the main slots (20), in the horizontal direction, the spacing e between each main slot (20) and the additional slots (22) formed on either side of this main slot being between 7 and 35 mm, and
    - the rear end of each spacer (14) is movable by hand from a rest position (15) in which the front (16) and rear (18) ends of the spacer are aligned on an axis perpendicular to the front face of the front panel (2), towards an offset position (17) in which the rear end (18) is moved away, in the horizontal direction, from its rest position (15) by a distance equal to e/2.
  2. Formwork according to Claim 1, in which each spacer (14) is flexible in the horizontal direction, the product of its second moment of area calculated in the direction of a vertical axis passing through its fastening point on the front panel (2) with its Young's modulus being between 1 and 50 Nm2.
  3. Formwork according to Claim 1 or 2, in which the front panel (2) comprises:
    - a flexible wall (3) identical to the rear panel (6), the flexible wall being joined to the connection elements (10) with the aid of a hook (13) which traverses a main (20) or additional (22) slot;
    - at least one rigid plate (24), having a thickness greater than 5 mm and less than 10 cm, interposed between the flexible wall (3) and a retaining bar (21), this rigid plate (24) constituting the front face (4) of the front panel (2).
  4. Formwork according to any one of the preceding claims, in which the spacer (14) comprises:
    - at least one cavity (27) which is configured to receive the hook (12, 13) and of which the only opening opens into the end bearing against the front or rear panel, this opening being sufficiently large to allow the hook (12, 13) to be removed,
    - lips (29) which border the periphery of this opening, these lips bearing against this front or rear panel in order to prevent the concrete from penetrating inside the cavity, a bulge (11) being formed in the cavity (27) with a shape complementary to the hook (12, 13) and able to retain the hook (12, 13) inside the cavity by shape cooperation.
  5. Formwork according to Claim 1 or 2, in which the front panel (2) comprises at least a first (30) and a second (31) lamina, each of these laminae being rigid with a rectangular parallelepipedal general shape, each comprising a front face (32) oriented towards the inner space, a rear face (34) and two vertical edges (36, 38), the front and rear faces extending essentially in planes parallel to the vertical and horizontal orthogonal directions;
    - the first lamina comprising a groove (40) formed vertically over more than 90% of the height of its vertical edge (36), this groove (40) splitting the edge (36) into a front tongue (42) and a rear tongue (44), these front (42) and rear (44) tongues being arranged opposite one another and being respectively situated on the same side as the front (32) and rear (34) faces of the lamina, the rear tongue (44) being longer than the front tongue (42) by at least 1 mm;
    - the second lamina comprising a tenon (46) which extends over more than 90% of the height of its vertical side, this tenon (46) having a shape complementary to the groove (40) formed in the vertical edge (36) of the first lamina, and this tenon (46) being able to be fitted in the groove (40) by a pivoting movement of which the angular amplitude is greater than 10°.
  6. Formwork according to Claim 5, in which:
    - the front tongue (42) of the first lamina comprises on its face oriented towards the rear tongue (44) a bulge (48) which extends vertically over more than 90% of its height;
    - the tenon of the second lamina comprises a recess (50), this bulge (48) and this recess (50) having mutually complementary shapes and being able, once fitted together, to prevent a translational movement in the horizontal direction of one of the two laminae with respect to the other lamina.
  7. Formwork according to either one of Claims 5 and 6, in which:
    - the face (43) of the rear tongue (44) oriented towards the front tongue (42) is concave;
    - the face (45) of the tenon (46) directed towards the rear of the lamina is convex and has a shape complementary to the concave face (43) such that these faces, once fitted together, are able to prevent a translational movement in the horizontal direction of one of the two laminae with respect to the other lamina.
  8. Formwork according to any one of Claims 5 to 7, in which:
    - the rear face of the rear tongue (44) of the first lamina comprises at its most remote end of the lamina, a groove (52) extending vertically over more than 90% of its height;
    - the edge (38) of the second lamina comprises a lamella (54) of overall planar shape which extends towards the exterior of this second lamina; this lamella comprising a projection (56) which extends vertically over more than 90% of the height of this lamella (54), this projection (56) having a shape complementary with the groove (52) so as to fit into the said groove (52), this groove (52) and this projection (56) being able, once fitted together, to prevent a translational movement in the horizontal direction of one of the two laminae with respect to the other lamina.
  9. Formwork according to any one of Claims 5 to 8, in which each lamina (30, 31) is manufactured by an extrusion process such that each of the laminae comprises a front wall (60), a rear wall (62) and a set of vertical partitions (64) mechanically connecting the front (60) and rear (62) walls, these partitions (64) being perpendicular to the walls, these partitions delimiting inside the space formed by the front (60) and rear (62) walls a set of cells (66), the rear wall comprising furrows (68) having a depth at most equal to half the thickness of the rear wall (62) and extending vertically over the whole height of this rear wall (62), these furrows (68) being grouped in pairs, the furrows of each pair being situated on either side of a junction site (70) between the rear wall (62) and a partition (64) such that the distance between the centre of a furrow (68) and the centre of the said junction site (70) does not exceed 2 mm, this junction site (70) being defined as the segment formed by the orthogonal projection of the partition (64) onto the rear face of the lamina.
  10. Formwork according to any one of Claims 5 to 9, in which each lamina (30, 31) is manufactured by an extrusion process such that each of the laminae comprises a front wall (60), a rear wall (62) and a set of vertical partitions (64) mechanically connecting the front (60) and rear (62) walls, these partitions (64) being perpendicular to the walls (60, 62), the rear wall (62) extending over the whole height and width of the lamina (30, 31) with the exception of a region (72) where it is absent, this region (72) being delimited by two vertical partitions (67, 69) which are immediately consecutive in the horizontal direction.
  11. Formwork according to any one of the preceding claims, in which there are included means making it possible to produce an overflow basin or a coping, these means comprising the following elements:
    - angle brackets (80) fixed to the rear face (8) of the rear panel (6), each angle bracket (80) having a horizontal branch (82) extending in a direction normal to the rear face (8) to within plus or minus 20°, followed by a vertical branch (84) extending vertically to within plus or minus 20°;
    - a horizontal flexible panel (86) folded in accordion fashion and joined to the horizontal branches, this panel being intended to receive a bed of concrete to form the bottom of a gutter for collecting overflow water or a coping support belt.
  12. Kit (90) for producing a formwork according to any one of the preceding claims, characterized in that this kit comprises:
    ▪ the front panel (2) of which an essentially planar front face (4) is intended to be oriented towards the inner space;
    ▪ the flexible rear panel (6) of which a face (8) is intended to be directed towards the outer space and to delimit the outer periphery of the formwork;
    ▪ the connection elements (10) intended to be distributed along the periphery of the formwork, each being able to connect the front panel (2) to the rear panel (6) so as to form between the said panels a space (9) able to be filled with liquid concrete, these connection elements (10) being able to be parallel and separated by a distance d when the permanent formwork extends rectilinearly along a horizontal direction, each of these connection elements (10) comprising:
    ° at least one hook (12) for fastening the rear panel (6);
    ° at least one spacer (14) extending between front (16) and rear (18) ends and intended to bear respectively against the front panel (2) and the rear panel (6);
    ▪ the set of main through-slots (20) formed in the rear panel, the spacing between two main slots, which are consecutive in the horizontal direction, being equal to the distance d to within ±5%, each slot (20) being able to be traversed by the fastening hook (12) of the respective connection element (10);
    ▪ the additional through-slots (22) are formed in the rear panel (6), on either side of each of the main slots (20), in the horizontal direction, the spacing e between each main slot (20) and the additional slots (22) formed on either side of this main slot being between 7 and 35 mm, and
    ▪ the rear end of each spacer (14) is able to be moved by hand, when this spacer (14) bears between the front panel (2) and the rear panel (6), from a rest position (15) in which the front (16) and rear (18) ends of the spacer are aligned on an axis perpendicular to the front face of the front panel (2), towards an offset position (17) in which the rear end (18) is moved away, in the horizontal direction, from its rest position (15) by a distance equal to e/2.
  13. Basin (100) comprising water, a bottom (102) and vertical walls (104) made of concrete, characterized in that the vertical walls are produced by a formwork according to any one of Claims 1 to 11.
EP12813883.1A 2012-01-06 2012-12-28 Lost formwork for vertical walls Not-in-force EP2800843B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR1250166A FR2985530B1 (en) 2012-01-06 2012-01-06 LOST FORMWORK FOR REALIZING VERTICAL WALLS
PCT/EP2012/077008 WO2013102605A1 (en) 2012-01-06 2012-12-28 Lost formwork for the production of vertical walls

Publications (2)

Publication Number Publication Date
EP2800843A1 EP2800843A1 (en) 2014-11-12
EP2800843B1 true EP2800843B1 (en) 2016-06-22

Family

ID=47557121

Family Applications (1)

Application Number Title Priority Date Filing Date
EP12813883.1A Not-in-force EP2800843B1 (en) 2012-01-06 2012-12-28 Lost formwork for vertical walls

Country Status (4)

Country Link
EP (1) EP2800843B1 (en)
ES (1) ES2594830T3 (en)
FR (1) FR2985530B1 (en)
WO (1) WO2013102605A1 (en)

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Publication number Priority date Publication date Assignee Title
RU202688U1 (en) * 2019-12-16 2021-03-02 Денис Викентьевич Андрушкевич POLYPROPYLENE FIXED FORMWORK FOR MANUFACTURING POOL WALLS
WO2024023733A1 (en) * 2022-07-29 2024-02-01 Milite Ivan Modular formwork for the construction of swimming pools and similar building structures

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Publication number Priority date Publication date Assignee Title
EP1538273A1 (en) * 2003-12-05 2005-06-08 Florent Bahri Element of prefabricated permanent workform, module obtained with this workform element and structure made of such modules
FR2897378B1 (en) * 2006-02-14 2008-04-11 Romain Fontaine PROCESS FOR PRODUCING A CONCRETE CONCRETE BASIN.
FR2897630B1 (en) * 2006-02-22 2008-05-23 Christian Duraz DEVICE FOR MOUNTING AND FIXING A FLEXIBLE FORMWORK
US8793953B2 (en) * 2009-02-18 2014-08-05 Cfs Concrete Forming Systems Inc. Clip-on connection system for stay-in-place form-work

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Title
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Also Published As

Publication number Publication date
FR2985530B1 (en) 2014-02-07
ES2594830T3 (en) 2016-12-22
FR2985530A1 (en) 2013-07-12
WO2013102605A1 (en) 2013-07-11
EP2800843A1 (en) 2014-11-12

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