EP3228746B1 - Expansion joint convenient to repair for concrete slabs shuttering system - Google Patents
Expansion joint convenient to repair for concrete slabs shuttering system Download PDFInfo
- Publication number
- EP3228746B1 EP3228746B1 EP17164679.7A EP17164679A EP3228746B1 EP 3228746 B1 EP3228746 B1 EP 3228746B1 EP 17164679 A EP17164679 A EP 17164679A EP 3228746 B1 EP3228746 B1 EP 3228746B1
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- EP
- European Patent Office
- Prior art keywords
- longitudinal
- expansion joint
- removable
- accordance
- concrete slabs
- Prior art date
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- 238000009416 shuttering Methods 0.000 title claims 2
- 239000000463 material Substances 0.000 claims description 10
- 230000000295 complement effect Effects 0.000 claims description 7
- 239000002131 composite material Substances 0.000 claims description 4
- 239000002861 polymer material Substances 0.000 claims description 4
- 210000003141 lower extremity Anatomy 0.000 claims 1
- 210000001364 upper extremity Anatomy 0.000 claims 1
- 238000009415 formwork Methods 0.000 description 8
- 238000005192 partition Methods 0.000 description 6
- 238000009418 renovation Methods 0.000 description 6
- 230000035939 shock Effects 0.000 description 4
- 239000011347 resin Substances 0.000 description 3
- 229920005989 resin Polymers 0.000 description 3
- 238000010521 absorption reaction Methods 0.000 description 2
- 238000005266 casting Methods 0.000 description 2
- 230000006866 deterioration Effects 0.000 description 2
- 229920000642 polymer Polymers 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 230000015556 catabolic process Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000036461 convulsion Effects 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Images
Classifications
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/62—Insulation or other protection; Elements or use of specified material therefor
- E04B1/66—Sealings
- E04B1/68—Sealings of joints, e.g. expansion joints
- E04B1/6803—Joint covers
- E04B1/6804—Joint covers specially adapted for floor parts
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/62—Insulation or other protection; Elements or use of specified material therefor
- E04B1/66—Sealings
- E04B1/68—Sealings of joints, e.g. expansion joints
- E04B1/6807—Expansion elements for parts cast in situ
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/62—Insulation or other protection; Elements or use of specified material therefor
- E04B1/66—Sealings
- E04B1/68—Sealings of joints, e.g. expansion joints
- E04B1/681—Sealings of joints, e.g. expansion joints for free moving parts
Definitions
- the present invention relates to the technical field of concrete slab formwork systems providing an expansion joint between two adjacent slabs.
- the present invention relates more particularly to an improved expansion joint, particularly in terms of ease of renovation.
- a known formwork system generally comprises an expansion joint having first and second longitudinal members, arranged side by side on the same horizontal plane, and each intended to form an integral part with an upper and horizontal edge of a concrete slab.
- the first longitudinal member is secured to a vertical partition plate for forming the vertical boundary between the two adjacent concrete slabs. After a horizontal retraction of at least one concrete slab, the first and second longitudinal elements are spaced from each other, each remaining integral with the concrete slab with which it forms an integral part.
- the opening of the expansion joint after shrinkage of the concrete slabs may cause shocks or jolts causing deterioration of the concrete and longitudinal elements. said expansion joint.
- a single rather restrictive solution for renovating the joint consists in sawing or breaking the jackhammer concrete in order to permanently remove the longitudinal elements of the expansion joint, and to cast a filling material such as resin or water. concrete in the recess generated by the removal of joints and broken concrete
- One of the aims of the invention is therefore to remedy these drawbacks by proposing an expansion joint for concrete slab formwork system whose renovation is simplified when degradations of the longitudinal elements of the joint or the concrete in contact with these elements. elements intervened.
- an expansion joint according to the state of the art in that it comprises first and second longitudinal elements, arranged side by side on the same plane horizontal, and intended to form each integral part with an upper and horizontal edge of a concrete slab, with the first longitudinal member secured to a vertical partition plate.
- the first and second longitudinal elements comprise arrangements opening at the level of the upper horizontal walls of said first and second longitudinal elements and for removing at least a portion of each of the first and second longitudinal elements for their replacement.
- the second longitudinal element consists of at least two parts fastened to one another by fastening means removable, so that only the removable part is removed and replaced during the renovation.
- the other part remains fixed and anchored in the concrete.
- the first longitudinal element in order to be removed and replaced, is either fixed to the vertical partition plate by removable fixing means, or it also consists of at least two parts fixed one to the other. on the other by removable fastening means, with a removable upper part and a lower part secured to the separating plate.
- the vertical plane defined by the separating plate is offset horizontally with respect to the vertical plane defined between the first and second longitudinal elements.
- the first and second longitudinal elements comprise complementary means for fitting horizontally into one another.
- the horizontal engagement allows a transfer of the vertical loads between the first and second longitudinal elements of the expansion joint.
- the first longitudinal element comprises a stack of three layers of material, with an intermediate layer that is narrower than the other two layers so as to have a U-shaped cross section
- the second longitudinal element comprises a stack of three layers of complementary material. with an intermediate layer wider than the other two layers so as to form a transverse projection adapted to fit into the hollow of the U-shape of the first longitudinal element.
- the arrangements are in the form of orifices vertically traversing at least the removable portion of each of the first and second longitudinal members, and rods inserted into said orifices with lower ends integral with a fixed part. expansion joint and threaded upper ends adapted to receive clamping members for the removable attachment of said removable portion of each of the first and second longitudinal members.
- the removable portions of the first and second longitudinal members have facing faces comprising complementary sinusoidal profiles to ensure continuity in the separation between two concrete slabs.
- said wheels are always supported by the surface of one of the adjacent slabs. This feature limits the impact and wear of concrete slabs near expansion joints.
- each of the first and second longitudinal elements is made of a polymeric material, or a composite material made from a polymeric material, such as plastic, in particular resin, etc.
- the sanding nature of the longitudinal elements is independent of the removable nature so that it can be envisaged to develop a remarkable expansion joint in that it comprises first and second longitudinal elements made of a polymer material, or in a composite material made from a polymer material, without these having a removable character.
- the invention relates to an expansion joint (1) for a concrete slab formwork system which employs at least one vertical separator plate of two adjacent concrete slabs, and which is used when necessary, for the casting of the concrete slab system.
- concrete to divide the concrete slab into several parts, depending on its area and its thickness, to create an air space necessary for the absorption of the variations of volumes of a slab, for example under the action of the withdrawal .
- the expansion joint (1) comprises first and second longitudinal members (2, 3), arranged side by side on the same horizontal plane, and each intended to form an integral part with an upper and horizontal edge of a concrete slab .
- the first longitudinal element (2) is integral with a vertical partition plate (4) of the two adjacent slabs.
- the first and second longitudinal members (2, 3) can be made of metal, or of a suitable material to be sanded, such as a polymer or a composite material made from a polymer, for example plastic or resin.
- the sanding of the longitudinal elements (2, 3) makes it possible to remake said longitudinal elements (2, 3) by a sanding operation and obtain an optimum planimetry of the expansion joint (1) and concrete slabs. Thus, the renovation of the expansion joint (1) is facilitated.
- the invention also makes it possible to remedy this problem by the following features, taken alone or in combination with the sanding nature of the longitudinal elements (2, 3), according to which said longitudinal elements (2, 3) comprise arrangements, leading to the horizontal upper walls of said first and second longitudinal members (2, 3), and for removing at least a portion (2a, 3a) of each of the first and second longitudinal members (2, 3) for their replacement.
- the first longitudinal element (2) comprises a stack of three layers of material, including an upper layer (2a), an intermediate layer (2b), and a lower layer (2c).
- the intermediate layer (2b) has a width smaller than that of the upper (2a) and lower (2c) layers so that the first longitudinal member (2) has a U-shaped cross section.
- the second longitudinal element (3) comprises a stack of three complementary material layers, including an upper layer (3a), an intermediate layer (3b), and a lower layer (3c) whose width is greater that of the upper layer (3a) and lower (3c) so as to form a transverse projection adapted to fit into the hollow of the U-shape of the first longitudinal member (2) and allow the transfer of vertical loads.
- the first and second longitudinal members (2, 3) comprise orifices (5) formed in their thickness so as to pass vertically through all three layers (2a, 2b, 2c, 3a, 3b, 3c). These orifices (5) are adapted to receive as insertion rods (6) fixed at their lower ends to fixed parts of the expansion joint (1).
- the lower ends of the rods (6) are welded to the lower layers (2c, 3c) of the first and second longitudinal members (2, 3).
- the lower ends of the rods (6) can also be fixed to fixed parts of the formwork system on which the expansion joint is mounted without departing from the scope of the invention.
- the upper ends of the rods (6) do not protrude from the first layers (2a, 3a) of the first and second longitudinal members (2, 3), and are, for example, threaded to cooperate with clamping members (7) for block in position, at least the upper layers (2a, 3a) of the first and second longitudinal members (2, 3).
- clamping members (7) when these clamping members (7) are unscrewed, the upper layers (2a, 3a) of said first and second longitudinal members (2, 3) can be removed and replaced, especially when they are deteriorated or when a vertical shift generating shock and jolts is felt at the passage of a vehicle.
- the width of the upper layer (2a) of the first longitudinal element (2) is greater than the width of the upper layer (3a) of the second longitudinal element (3), and the lower layer (2c) of the first longitudinal element (2).
- ) is made integral with the vertical partition plate (4), for example by welding, so that the vertical plane defined by the separating plate (4) is offset horizontally with respect to the vertical plane (P) defined between the first and second longitudinal members (2, 3).
- the invention therefore describes an expansion joint (1) comprising first and second longitudinal members (2, 3) each having removable portions, constituted in particular by the upper layers (2a, 3a).
- the intermediate (2b, 3b) and lower (2c, 3c) layers of the first and second longitudinal members (2, 3) may form a one-piece assembly, or the first longitudinal member (2) may be made in one piece. part fixed directly removably, by the same means as above, on the vertical partition plate (4) provided for example with an upper edge at right angles.
- the removable parts of the first and second longitudinal elements (2, 3), in particular the upper layers (2a, 3a), have facing faces comprising complementary sinusoidal profiles.
- the wheels are always supported by the surface of one of the adjacent slabs. This feature limits the impact and wear of concrete slabs near expansion joints.
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Road Paving Structures (AREA)
- On-Site Construction Work That Accompanies The Preparation And Application Of Concrete (AREA)
- Bridges Or Land Bridges (AREA)
- Forms Removed On Construction Sites Or Auxiliary Members Thereof (AREA)
Description
La présente invention concerne le domaine technique des systèmes de coffrage de dalles de béton procurant un joint de dilatation entre deux dalles adjacentes. La présente invention concerne plus particulièrement un joint de dilatation perfectionné, notamment en termes de facilité de rénovation.The present invention relates to the technical field of concrete slab formwork systems providing an expansion joint between two adjacent slabs. The present invention relates more particularly to an improved expansion joint, particularly in terms of ease of renovation.
Dans le domaine de la construction, et en particulier celui relatif à la couverture de sol par des dalles en béton, il est bien connu d'utiliser un système de coffrage incluant des joints de dilatation entre les dalles. En effet, il est usuel de diviser la dalle de béton en plusieurs parties, en fonction de sa superficie et de son épaisseur, pour créer un espace d'air nécessaire à l'absorption des variations de volumes d'une dalle, par exemple sous l'action du retrait.In the field of construction, and in particular that relating to the floor covering by concrete slabs, it is well known to use a formwork system including expansion joints between the slabs. Indeed, it is customary to divide the concrete slab into several parts, depending on its area and its thickness, to create an air space necessary for the absorption of volume variations of a slab, for example under the action of withdrawal.
Un système de coffrage connu comprend, d'une manière générale, un joint de dilatation comportant des premier et deuxième éléments longitudinaux, disposés côte à côte sur le même plan horizontal, et destinés à former chacun partie intégrante avec une arête supérieure et horizontale d'une dalle béton. Le premier élément longitudinal est rendu solidaire d'une plaque de séparation verticale destinée à former la frontière verticale entre les deux dalles de béton adjacentes. Après un effort horizontal de rétractation d'au moins une dalle de béton, les premier et deuxième éléments longitudinaux sont écartés l'un de l'autre, chacun restant solidaire de la dalle de béton avec laquelle il forme partie intégrante.A known formwork system generally comprises an expansion joint having first and second longitudinal members, arranged side by side on the same horizontal plane, and each intended to form an integral part with an upper and horizontal edge of a concrete slab. The first longitudinal member is secured to a vertical partition plate for forming the vertical boundary between the two adjacent concrete slabs. After a horizontal retraction of at least one concrete slab, the first and second longitudinal elements are spaced from each other, each remaining integral with the concrete slab with which it forms an integral part.
En fin de vie, ou bien lorsque ces systèmes de coffrage et joints de dilatation sont mal posés, l'ouverture du joint de dilatation après rétractation des dalles de béton peut engendrer des chocs ou à-coups entrainant une détérioration du béton et des éléments longitudinaux dudit joint de dilatation.At the end of life, or when these formwork systems and expansion joints are incorrectly installed, the opening of the expansion joint after shrinkage of the concrete slabs may cause shocks or jolts causing deterioration of the concrete and longitudinal elements. said expansion joint.
Ainsi, une seule solution assez contraignante pour rénover le joint consiste à scier ou à casser au marteau piqueur le béton pour pouvoir retirer de manière définitive les éléments longitudinaux du joint de dilatation, et à couler un matériau de comblement telle que de la résine ou du béton dans l'évidement généré par l'enlèvement des joints et du béton casséThus, a single rather restrictive solution for renovating the joint consists in sawing or breaking the jackhammer concrete in order to permanently remove the longitudinal elements of the expansion joint, and to cast a filling material such as resin or water. concrete in the recess generated by the removal of joints and broken concrete
Le document
L'un des buts de l'invention est donc de remédier à ces inconvénients en proposant un joint de dilatation pour système de coffrage de dalles de béton dont la rénovation est simplifiée lorsque des dégradations des éléments longitudinaux du joint ou du béton en contact avec ces éléments sont intervenues.One of the aims of the invention is therefore to remedy these drawbacks by proposing an expansion joint for concrete slab formwork system whose renovation is simplified when degradations of the longitudinal elements of the joint or the concrete in contact with these elements. elements intervened.
A cet effet, et pour résoudre les problèmes précités, il a été mis au point un joint de dilatation conforme à l'état de la technique en ce qu'il comprend des premier et deuxième éléments longitudinaux, disposés côte à côte sur le même plan horizontal, et destinés à former chacun partie intégrante avec une arête supérieure et horizontale d'une dalle de béton, avec le premier élément longitudinal solidaire d'une plaque de séparation verticale.For this purpose, and to solve the aforementioned problems, it has been developed an expansion joint according to the state of the art in that it comprises first and second longitudinal elements, arranged side by side on the same plane horizontal, and intended to form each integral part with an upper and horizontal edge of a concrete slab, with the first longitudinal member secured to a vertical partition plate.
Selon l'invention, les premier et deuxième éléments longitudinaux comprennent des agencements débouchant au niveau des parois supérieures horizontales desdits premier et deuxième éléments longitudinaux et permettant de retirer au moins une partie de chacun des premier et deuxième éléments longitudinaux pour leur remplacement.According to the invention, the first and second longitudinal elements comprise arrangements opening at the level of the upper horizontal walls of said first and second longitudinal elements and for removing at least a portion of each of the first and second longitudinal elements for their replacement.
De cette manière, les éléments longitudinaux détériorés, ou bien mal posés, peuvent être retirés en agissant sur les agencements qui sont accessibles après coulage et séchage des dalles de béton, et remplacés. Les opérations lourdes consistant à casser le béton et les joints pour leur retrait forcé sont supprimées. La rénovation est rapide et facilitée.In this way, the longitudinal elements deteriorated, or poorly placed, can be removed by acting on the arrangements that are accessible after casting and drying of the concrete slabs, and replaced. Heavy operations of breaking concrete and joints for forced removal are removed. Renovation is fast and easy.
Selon une forme de réalisation particulière, le deuxième élément longitudinal est constituée d'au moins deux parties fixées l'une sur l'autre par des moyens de fixation amovibles, de sorte que seule la partie amovible est retirée et remplacée lors de la rénovation. L'autre partie reste fixe et ancrée dans le béton.According to one particular embodiment, the second longitudinal element consists of at least two parts fastened to one another by fastening means removable, so that only the removable part is removed and replaced during the renovation. The other part remains fixed and anchored in the concrete.
Selon des formes de réalisations particulières, pour pouvoir être retiré et remplacé, le premier élément longitudinal est, soit fixé à la plaque de séparation verticale par des moyens de fixation amovibles, soit il est également constitué d'au moins deux parties fixées l'une sur l'autre par des moyens de fixation amovibles, avec une partie supérieure amovible et une partie inférieure solidaire de la plaque de séparation.According to particular embodiments, in order to be removed and replaced, the first longitudinal element is either fixed to the vertical partition plate by removable fixing means, or it also consists of at least two parts fixed one to the other. on the other by removable fastening means, with a removable upper part and a lower part secured to the separating plate.
Le plan vertical défini par la plaque de séparation est décalé horizontalement par rapport au plan vertical défini entre les premier et deuxième éléments longitudinaux. Ainsi, lorsque les dalles de béton se rétractent, les éléments longitudinaux s'éloignent l'un de l'autre, mais demeurent toujours en appui sur l'une des dalles de béton. La stabilité du joint est optimale et l'apparition de désordres, telles que des fissures ou des cassures est réduite.The vertical plane defined by the separating plate is offset horizontally with respect to the vertical plane defined between the first and second longitudinal elements. Thus, when the concrete slabs retract, the longitudinal elements move away from each other, but still rest on one of the concrete slabs. The stability of the joint is optimal and the appearance of disorders, such as cracks or breaks is reduced.
D'une manière avantageuse, les premier et deuxième éléments longitudinaux comprennent des moyens complémentaires pour s'emboiter horizontalement l'un dans l'autre. Ainsi, l'emboitement horizontal permet un transfert des charges verticales entre les premier et deuxième éléments longitudinaux du joint de dilatation.Advantageously, the first and second longitudinal elements comprise complementary means for fitting horizontally into one another. Thus, the horizontal engagement allows a transfer of the vertical loads between the first and second longitudinal elements of the expansion joint.
Le premier élément longitudinal comprend un empilement de trois couches de matériau, avec une couche intermédiaire moins large que les deux autres couches de manière à présenter une section transversale en forme de U, et le deuxième élément longitudinal comprend un empilement de trois couches de matériau complémentaires, avec une couche intermédiaire plus large que les deux autres couches de manière à former une saillie transversale apte à s'emboiter dans le creux de la forme en U du premier élément longitudinal.The first longitudinal element comprises a stack of three layers of material, with an intermediate layer that is narrower than the other two layers so as to have a U-shaped cross section, and the second longitudinal element comprises a stack of three layers of complementary material. with an intermediate layer wider than the other two layers so as to form a transverse projection adapted to fit into the hollow of the U-shape of the first longitudinal element.
Selon une forme de réalisation particulière, les agencements se présentent sous la forme d'orifices traversant verticalement au moins la partie amovible de chacun des premier et deuxième éléments longitudinaux, et de tiges insérées dans lesdits orifices avec des extrémités inférieures solidaires d'une partie fixe du joint de dilatation et des extrémités supérieures filetées aptes à recevoir des organes de serrage pour la fixation amovible de ladite partie amovible de chacun des premier et deuxième éléments longitudinaux.According to a particular embodiment, the arrangements are in the form of orifices vertically traversing at least the removable portion of each of the first and second longitudinal members, and rods inserted into said orifices with lower ends integral with a fixed part. expansion joint and threaded upper ends adapted to receive clamping members for the removable attachment of said removable portion of each of the first and second longitudinal members.
De préférence, les parties amovibles des premier et deuxième éléments longitudinaux présentent des faces en regard comprenant des profils sinusoïdaux complémentaires pour assurer une continuité au niveau de la séparation entre deux dalles de béton. Ainsi, lors du passage d'un véhicule à roues, lesdites roues demeurent toujours soutenues par la surface de l'une des dalles adjacentes. Cette caractéristique permet de limiter les chocs et l'usure des dalles de béton à proximité des joints de dilatation.Preferably, the removable portions of the first and second longitudinal members have facing faces comprising complementary sinusoidal profiles to ensure continuity in the separation between two concrete slabs. Thus, during the passage of a wheeled vehicle, said wheels are always supported by the surface of one of the adjacent slabs. This feature limits the impact and wear of concrete slabs near expansion joints.
Selon une autre caractéristique de l'invention, au moins la partie amovible de chacun des premier et deuxième éléments longitudinaux est réalisée dans un matériau polymère, ou dans un matériau composite réalisé à partir d'un matériau polymère, tel qu'en plastique, en résine, etc. Cette caractéristique permet, lorsque les éléments longitudinaux du joint de dilatation présentent un décalage vertical, entrainant des chocs et à-coups lors des passages des véhicules, de pouvoir poncer lesdits éléments longitudinaux pour atteindre une planimétrie optimale. La rénovation est très rapide et consiste simplement en une étape de ponçage.According to another characteristic of the invention, at least the removable portion of each of the first and second longitudinal elements is made of a polymeric material, or a composite material made from a polymeric material, such as plastic, in particular resin, etc. This characteristic makes it possible, when the longitudinal elements of the expansion joint have a vertical offset, resulting in shocks and jerks during the passage of vehicles, to be able to sand said longitudinal elements to achieve optimal planimetry. The renovation is very fast and simply consists of a sanding step.
Bien entendu, le caractère ponçable des éléments longitudinaux est indépendant du caractère amovible de sorte qu'il pourra être envisagé de développer un joint de dilatation remarquable en ce qu'il comprend des premier et deuxième éléments longitudinaux réalisés dans un matériau polymère, ou dans un matériau composite réalisé à partir d'un matériau polymère, sans pour autant que ceux-ci présentent un caractère amovible.Of course, the sanding nature of the longitudinal elements is independent of the removable nature so that it can be envisaged to develop a remarkable expansion joint in that it comprises first and second longitudinal elements made of a polymer material, or in a composite material made from a polymer material, without these having a removable character.
D'autres avantages et caractéristiques ressortiront mieux de la description qui va suivre de plusieurs variantes d'exécution, données à titre d'exemples non limitatifs, du joint de dilatation conforme à l'invention, en référence aux dessins annexés sur lesquels :
- la
figure 1 est une vue en perspective illustrant une forme de réalisation du joint de dilatation selon l'invention, avant rétractation des dalles de béton ; - la
figure 2 est une vue en perspective similaire à celle de lafigure 1 , après rétractation des dalles de béton ; - la
figure 3 est une représentation en coupe transversale de la forme de réalisation du joint de dilatation illustrée à lafigure 1 , avant rétractation des dalles de béton ; - la
figure 4 est une représentation en coupe transversale de la forme de réalisation du joint de dilatation illustrée à lafigure 2 , après rétractation des dalles de béton.
- the
figure 1 is a perspective view illustrating an embodiment of the expansion joint according to the invention, before shrinkage of the concrete slabs; - the
figure 2 is a perspective view similar to that of thefigure 1 after retracting the concrete slabs; - the
figure 3 is a cross-sectional representation of the embodiment of the expansion joint illustrated in FIG.figure 1 , before shrinkage of concrete slabs; - the
figure 4 is a cross-sectional representation of the embodiment of the expansion joint illustrated in FIG.figure 2 , after shrinkage of the concrete slabs.
L'invention concerne un joint de dilatation (1) pour un système de coffrage de dalles de béton qui met en oeuvre au moins une plaque de séparation verticale de deux dalles béton adjacentes, et qui est utilisé quand il est nécessaire, pour le coulage du béton, de diviser la dalle béton en plusieurs parties, en fonction de sa superficie et de son épaisseur, pour créer un espace d'air nécessaire à l'absorption des variations de volumes d'une dalle, par exemple sous l'action du retrait.The invention relates to an expansion joint (1) for a concrete slab formwork system which employs at least one vertical separator plate of two adjacent concrete slabs, and which is used when necessary, for the casting of the concrete slab system. concrete, to divide the concrete slab into several parts, depending on its area and its thickness, to create an air space necessary for the absorption of the variations of volumes of a slab, for example under the action of the withdrawal .
En référence aux
Le premier élément longitudinal (2) est solidaire d'une plaque de séparation verticale (4) des deux dalles adjacentes.The first longitudinal element (2) is integral with a vertical partition plate (4) of the two adjacent slabs.
Les premier et deuxième éléments longitudinaux (2, 3) peuvent être réalisés en métal, ou bien dans un matériau approprié pour être poncé, tel qu'un polymère ou un matériau composite réalisé à partir d'un polymère, par exemple en plastique ou en résine.The first and second longitudinal members (2, 3) can be made of metal, or of a suitable material to be sanded, such as a polymer or a composite material made from a polymer, for example plastic or resin.
Ainsi, lorsque le joint de dilatation est détérioré ou mal posé, et que les éléments longitudinaux (2, 3), qui forment les arêtes supérieures des dalles, sont décalés verticalement, des chocs et à-coups se produisent lors du passage de véhicules à roues, entrainant des désordres dans le béton et une détérioration accélérée du béton et du joint de dilatation (1).Thus, when the expansion joint is damaged or incorrectly placed, and the longitudinal elements (2, 3), which form the upper edges of the slabs, are offset vertically, shocks and jolts occur during the passage of vehicles to wheels, causing disorders in the concrete and accelerated deterioration of the concrete and the expansion joint (1).
Le caractère ponçable des éléments longitudinaux (2, 3) permet de pouvoir remettre à niveau lesdits éléments longitudinaux (2, 3) par une opération de ponçage et obtenir une planimétrie optimale du joint de dilatation (1) et des dalles de béton. Ainsi, la rénovation du joint de dilatation (1) est facilitée.The sanding of the longitudinal elements (2, 3) makes it possible to remake said longitudinal elements (2, 3) by a sanding operation and obtain an optimum planimetry of the expansion joint (1) and concrete slabs. Thus, the renovation of the expansion joint (1) is facilitated.
L'invention permet également de remédier à ce problème par les caractéristiques suivantes, prises seules ou en combinaison avec le caractère ponçable des éléments longitudinaux (2, 3), selon lesquelles lesdits éléments longitudinaux (2, 3) comprennent des agencements, débouchant au niveau des parois supérieures horizontales desdits premier et deuxième éléments longitudinaux (2, 3), et permettant de retirer au moins une partie (2a, 3a) de chacun des premier et deuxième éléments longitudinaux (2, 3) pour leur remplacement.The invention also makes it possible to remedy this problem by the following features, taken alone or in combination with the sanding nature of the longitudinal elements (2, 3), according to which said longitudinal elements (2, 3) comprise arrangements, leading to the horizontal upper walls of said first and second longitudinal members (2, 3), and for removing at least a portion (2a, 3a) of each of the first and second longitudinal members (2, 3) for their replacement.
Le premier élément longitudinal (2) comprend un empilement de trois couches de matériau, dont une couche supérieure (2a), une couche intermédiaire (2b), et une couche inférieure (2c). La couche intermédiaire (2b) comprend une largeur inférieure à celle des couches supérieure (2a) et inférieure (2c) de manière à ce que le premier élément longitudinal (2) présente une section transversale en forme de U.The first longitudinal element (2) comprises a stack of three layers of material, including an upper layer (2a), an intermediate layer (2b), and a lower layer (2c). The intermediate layer (2b) has a width smaller than that of the upper (2a) and lower (2c) layers so that the first longitudinal member (2) has a U-shaped cross section.
De la même manière, le deuxième élément longitudinal (3) comprend un empilement de trois couches de matériau complémentaires, dont une couche supérieure (3a), une couche intermédiaire (3b), et une couche inférieure (3c) dont la largeur est plus importante que celle des couches supérieure (3a) et inférieure (3c) de manière à former une saillie transversale apte à s'emboiter dans le creux de la forme en U du premier élément longitudinal (2) et permettre le transfert des charges verticales.In the same way, the second longitudinal element (3) comprises a stack of three complementary material layers, including an upper layer (3a), an intermediate layer (3b), and a lower layer (3c) whose width is greater that of the upper layer (3a) and lower (3c) so as to form a transverse projection adapted to fit into the hollow of the U-shape of the first longitudinal member (2) and allow the transfer of vertical loads.
Les premier et deuxième éléments longitudinaux (2, 3) comprennent des orifices (5) ménagés dans leur épaisseur de manière à traverser verticalement l'ensemble des trois couches (2a, 2b, 2c, 3a, 3b, 3c). Ces orifices (5) sont aptes à recevoir en insertion des tiges (6) fixées à leurs extrémités inférieures à des parties fixes du joint de dilatation (1). Par exemple, les extrémités inférieures des tiges (6) sont soudées aux couches inférieures (2c, 3c) des premier et deuxième éléments longitudinaux (2, 3). Les extrémités inférieures des tiges (6) peuvent également être fixées à des parties fixes du système de coffrage sur lequel est monté le joint de dilatation sans sortir du cadre de l'invention. Les extrémités supérieures des tiges (6) ne font pas saillie des premières couches (2a, 3a) des premier et deuxième éléments longitudinaux (2, 3), et sont, par exemple, filetées pour coopérer avec des organes de serrage (7) pour bloquer en position, au moins les couches supérieures (2a, 3a) des premier et deuxième éléments longitudinaux (2, 3). A l'inverse, lorsque ces organes de serrage (7) sont dévissés, les couches supérieures (2a, 3a) desdits premier et deuxième éléments longitudinaux (2, 3) peuvent être retirées et remplacées, notamment lorsqu'elles sont détériorées ou bien lorsqu'un décalage vertical générateur de chocs et d'à-coups se fait ressentir au passage d'un véhicule.The first and second longitudinal members (2, 3) comprise orifices (5) formed in their thickness so as to pass vertically through all three layers (2a, 2b, 2c, 3a, 3b, 3c). These orifices (5) are adapted to receive as insertion rods (6) fixed at their lower ends to fixed parts of the expansion joint (1). For example, the lower ends of the rods (6) are welded to the lower layers (2c, 3c) of the first and second longitudinal members (2, 3). The lower ends of the rods (6) can also be fixed to fixed parts of the formwork system on which the expansion joint is mounted without departing from the scope of the invention. The upper ends of the rods (6) do not protrude from the first layers (2a, 3a) of the first and second longitudinal members (2, 3), and are, for example, threaded to cooperate with clamping members (7) for block in position, at least the upper layers (2a, 3a) of the first and second longitudinal members (2, 3). Conversely, when these clamping members (7) are unscrewed, the upper layers (2a, 3a) of said first and second longitudinal members (2, 3) can be removed and replaced, especially when they are deteriorated or when a vertical shift generating shock and jolts is felt at the passage of a vehicle.
La largeur de la couche supérieure (2a) du premier élément longitudinal (2) est plus importante que la largeur de la couche supérieure (3a) du deuxième élément longitudinal (3), et la couche inférieure (2c) du premier élément longitudinal (2) est rendue solidaire de la plaque de séparation verticale (4), par exemple par soudage, de telle sorte que le plan vertical défini par la plaque de séparation (4) est décalé horizontalement par rapport au plan vertical (P) défini entre les premier et deuxième éléments longitudinaux (2, 3). Ainsi, en référence aux
L'invention décrit donc un joint de dilatation (1) comprenant des premier et deuxième éléments longitudinaux (2, 3) présentant chacun des parties amovibles, constituées notamment par les couches supérieures (2a, 3a).The invention therefore describes an expansion joint (1) comprising first and second longitudinal members (2, 3) each having removable portions, constituted in particular by the upper layers (2a, 3a).
D'autres formes de réalisation peuvent être imaginées sans sortir du cadre de l'invention. Par exemple, les couches intermédiaires (2b, 3b) et inférieures (2c, 3c) des premier et deuxième éléments longitudinaux (2, 3) peuvent former un ensemble monobloc, ou bien le premier élément longitudinal (2) peut être réalisé en une seule partie fixée directement de manière amovible, par les mêmes moyens que précités, sur la plaque de séparation verticale (4) pourvue par exemple d'un rebord supérieur en équerre.Other embodiments can be imagined without departing from the scope of the invention. For example, the intermediate (2b, 3b) and lower (2c, 3c) layers of the first and second longitudinal members (2, 3) may form a one-piece assembly, or the first longitudinal member (2) may be made in one piece. part fixed directly removably, by the same means as above, on the vertical partition plate (4) provided for example with an upper edge at right angles.
Afin d'assurer une continuité au niveau de la séparation entre les deux dalles de béton, les parties amovibles des premier et deuxième éléments longitudinaux (2, 3), notamment les couches supérieures (2a, 3a), présentent des faces en regard comprenant des profils sinusoïdaux complémentaires. Ainsi, lors du passage d'un véhicule, les roues demeurent toujours soutenues par la surface de l'une des dalles adjacentes. Cette caractéristique permet de limiter les chocs et l'usure des dalles de béton à proximité des joints de dilatation.In order to ensure continuity in the separation between the two concrete slabs, the removable parts of the first and second longitudinal elements (2, 3), in particular the upper layers (2a, 3a), have facing faces comprising complementary sinusoidal profiles. Thus, when passing a vehicle, the wheels are always supported by the surface of one of the adjacent slabs. This feature limits the impact and wear of concrete slabs near expansion joints.
Claims (7)
- Expansion joint (1) for a shuttering system for concrete slabs to be laid on ground such as to enable the creation of an air space between two adjacent slabs after shrinkage of the concrete slabs, with the said joint incorporating first and second longitudinal segments (2, 3) positioned side by side in the same horizontal plane, and being intended to each be integral with an upper and horizontal edge of a concrete slab, characterized by the fact that only the first longitudinal segment (2) is integral with a vertical separating plate (4) between the said two adjacent slabs, defining a vertical plane offset horizontally in relation to a vertical plane (P) defined between the first and second longitudinal segments (2, 3) such that, after shrinkage of the concrete slabs, the longitudinal segments (2, 3) move apart from each other but remain constantly bearing against one of the concrete slabs, as well as by the fact that the first and second longitudinal segments (2, 3) incorporate fittings (5, 6, 7) that culminate at their upper horizontal walls, and that enable the removal of at least a part (2a, 3a) of each of the first and second longitudinal segments (2, 3), for their replacement; the first longitudinal segment (2) incorporates a stack of three layers of material (2a, 2b, 2c), with one intermediate layer (2b) having a smaller width than the other two layers (2a, 2c), such that the first longitudinal segment (2) has a U-shaped transversal form, and the second longitudinal segment (3) incorporates a stack of three complementary layers of material (3a, 3b, 3c), with one intermediate layer (3b) having a greater width than the other two layers (3a, 3c), so as to form a transversal salience that can nest within the hollow of the U-shaped form of the first longitudinal segment (2).
- Expansion joint (1) in accordance with claim 1, characterized in that the second longitudinal segment (3) is composed of at least two parts (3a, 3b, 3c) secured to each other via a removable means of fixation (6, 7).
- Expansion joint (1) in accordance with claim 2, characterized in that the first longitudinal segment (2) is secured to the vertical separating plate (4) via removable means of fixation (6, 7).
- Expansion joint (1) in accordance with claim 2, characterized in that the first longitudinal segment (2) is composed of at least two parts (2a, 2b, 2c) secured to each other via removable means of fixation (6, 7).
- Expansion joint (1) in accordance with one of the preceding claims, characterized in that the fittings take the form of apertures (5) vertically traversing at least the removable part (2a, 3a) of each of the first and second longitudinal segments (2, 3) and rods (6) inserted into the said apertures (5), with lower extremities integral with a fixed part of the expansion joint (1) and threaded upper extremities able to accommodate tightening devices (7), for the removable fixation of the said removable part (2a, 3a) of each of the first and second longitudinal segments (2, 3).
- Expansion joint (1) in accordance with one of the preceding claims, characterized by the fact that the removable parts (2a, 3a) of the first and second longitudinal segments (2, 3) have opposing faces incorporating complementary sinusoidal profiles.
- Expansion joint (1) in accordance with one of the preceding claims, characterized by the fact that at least the removable (2a, 3a) of each of the first and second longitudinal segments (2, 3) is made of a polymer material, or of a composite material made from a polymer material.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP18215890.7A EP3483339B1 (en) | 2016-04-07 | 2017-04-04 | Method for easier renovation of expansion joint for concrete slabs shuttering system |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR1653041A FR3049970B1 (en) | 2016-04-07 | 2016-04-07 | EASY RENOVATION EXPANSION JOINT FOR CONCRETE SLAB FORMWORK SYSTEMS |
Related Child Applications (2)
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EP18215890.7A Division-Into EP3483339B1 (en) | 2016-04-07 | 2017-04-04 | Method for easier renovation of expansion joint for concrete slabs shuttering system |
EP18215890.7A Division EP3483339B1 (en) | 2016-04-07 | 2017-04-04 | Method for easier renovation of expansion joint for concrete slabs shuttering system |
Publications (2)
Publication Number | Publication Date |
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EP3228746A1 EP3228746A1 (en) | 2017-10-11 |
EP3228746B1 true EP3228746B1 (en) | 2019-02-13 |
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EP18215890.7A Active EP3483339B1 (en) | 2016-04-07 | 2017-04-04 | Method for easier renovation of expansion joint for concrete slabs shuttering system |
EP17164679.7A Active EP3228746B1 (en) | 2016-04-07 | 2017-04-04 | Expansion joint convenient to repair for concrete slabs shuttering system |
Family Applications Before (1)
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EP18215890.7A Active EP3483339B1 (en) | 2016-04-07 | 2017-04-04 | Method for easier renovation of expansion joint for concrete slabs shuttering system |
Country Status (5)
Country | Link |
---|---|
EP (2) | EP3483339B1 (en) |
ES (2) | ES2948249T3 (en) |
FR (1) | FR3049970B1 (en) |
PT (1) | PT3228746T (en) |
TR (1) | TR201902297T4 (en) |
Families Citing this family (3)
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CN110424604B (en) * | 2019-07-23 | 2021-10-22 | 卢美华 | Hollow composite floor slab |
CN110952672A (en) * | 2019-10-23 | 2020-04-03 | 中船第九设计研究院工程有限公司 | Method for filling lap joint of prefabricated building by grouting |
FR3133626B1 (en) * | 2022-03-15 | 2024-03-29 | Lynks | Expansion joint between two concrete slabs suitable for the passage of automatically guided vehicles |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
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CA1217668A (en) * | 1983-01-31 | 1987-02-10 | Frank A. Braun | Expansion joint |
US4893448A (en) * | 1989-02-23 | 1990-01-16 | Mccormick Wilbert | Steel expansion joint |
DE29901141U1 (en) * | 1999-01-23 | 1999-05-06 | Kämmerling, Christoph, 45549 Sprockhövel | Formwork element for industrial floors |
DE20209995U1 (en) * | 2002-06-28 | 2002-11-21 | Zueblin Ag | Concrete joint formation in the floor slab |
DE202005008762U1 (en) * | 2005-06-02 | 2005-09-01 | Hammes, Herbert | Shell unit, for molding cast concrete floors, has two profiles with a limit to define the field edges and a cover plate with fasteners to act as vertical anchors |
KR100994403B1 (en) * | 2008-09-09 | 2010-11-16 | 고삼석 | A expansion joint apparatus for bridge structure |
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2016
- 2016-04-07 FR FR1653041A patent/FR3049970B1/en active Active
-
2017
- 2017-04-04 EP EP18215890.7A patent/EP3483339B1/en active Active
- 2017-04-04 ES ES18215890T patent/ES2948249T3/en active Active
- 2017-04-04 PT PT17164679T patent/PT3228746T/en unknown
- 2017-04-04 EP EP17164679.7A patent/EP3228746B1/en active Active
- 2017-04-04 ES ES17164679T patent/ES2715780T3/en active Active
- 2017-04-04 TR TR2019/02297T patent/TR201902297T4/en unknown
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Also Published As
Publication number | Publication date |
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EP3228746A1 (en) | 2017-10-11 |
PT3228746T (en) | 2019-02-21 |
FR3049970B1 (en) | 2020-12-04 |
ES2948249T3 (en) | 2023-09-06 |
TR201902297T4 (en) | 2019-03-21 |
EP3483339C0 (en) | 2023-06-07 |
EP3483339A1 (en) | 2019-05-15 |
ES2715780T3 (en) | 2019-06-06 |
EP3483339B1 (en) | 2023-06-07 |
FR3049970A1 (en) | 2017-10-13 |
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