EP1086277A1 - Method for producing a road joint, and joint obtained by said method - Google Patents

Method for producing a road joint, and joint obtained by said method

Info

Publication number
EP1086277A1
EP1086277A1 EP00915290A EP00915290A EP1086277A1 EP 1086277 A1 EP1086277 A1 EP 1086277A1 EP 00915290 A EP00915290 A EP 00915290A EP 00915290 A EP00915290 A EP 00915290A EP 1086277 A1 EP1086277 A1 EP 1086277A1
Authority
EP
European Patent Office
Prior art keywords
trench
construction elements
joint
binder
aggregates
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.)
Withdrawn
Application number
EP00915290A
Other languages
German (de)
French (fr)
Inventor
Jacky Seantier
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Freyssinet International STUP SA
Original Assignee
Freyssinet International STUP SA
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Freyssinet International STUP SA filed Critical Freyssinet International STUP SA
Publication of EP1086277A1 publication Critical patent/EP1086277A1/en
Withdrawn legal-status Critical Current

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
    • E01D19/00—Structural or constructional details of bridges
    • E01D19/06—Arrangement, construction or bridging of expansion joints
    • E01D19/067—Flat continuous joints cast in situ
    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
    • E01D19/00—Structural or constructional details of bridges
    • E01D19/06—Arrangement, construction or bridging of expansion joints

Definitions

  • the present invention relates to the field of flexible road joints, of the type comprising a flexible material, resulting from a mixture of aggregates and binder, filling a trench formed in the coating of the road at an interval between two elements of construction supporting the covering.
  • Such flexible joints are used, for example, between the successive sections of the bridge deck when the amplitude of the spreading movements (breath) between these sections is not too great. They are an economical solution, and also provide continuity of the running surface and good acoustic comfort.
  • compositions used to produce such seals are most often based on a thermoplastic binder.
  • European patent application 0 000 642 describes a flexible joint whose binder is based on bitumen and rubbery waste
  • French patent 2,562,108 describes a joint whose binder is based on bitumen and of a sulfur vulcanized elastomer.
  • Two-component binders are also seen appearing in which the formation of the flexible matrix results from crosslinking of products respectively included in the two components.
  • the advantage of these latter formulations is that they can be implemented at room temperature, which simplifies the execution of the work.
  • a main object of the present invention is to improve the behavior of such a flexible joint when subjected to tensile forces.
  • the invention thus provides a method of producing a flexible joint between two sections of roadway respectively supported by two adjacent construction elements, a rolling surface being formed by a coating deposited on the construction elements and interrupted above an interval separating the two construction elements to form a trench of width greater than that of said interval.
  • a sealing element covering said interval is placed at the bottom of the trench, and granules and a binder are poured into the trench which form a flexible material after setting.
  • reinforcements are installed in the trench which are attached to the two construction elements on either side of the obturation element, these reinforcements being perforated so as to allow the passage of at least some of the aggregates in the mixture.
  • the reinforcements reinforce the joint in areas where the risk of tearing under the tensile stress is greater.
  • the fact that the reinforcements are perforated allows the aggregates and the binder to pass on either side of the reinforcement and within it. This results in a good effectiveness of the reinforcement.
  • the binder is formed of several components, preferably comprising a polyurethane, mixed and used at room temperature.
  • Each frame has a convex portion resting on the bottom of the trench;
  • Each frame has a first portion resting on the bottom of the trench and a second portion erected along an end surface of the covering bordering the trench;
  • each frame is a piece of expanded metal; - to attach the reinforcements, holes are drilled in the construction elements at the bottom of the trench, metal rods are engaged in these holes leaving their upper ends protruding through the openwork reinforcements, and the upper ends of the rods above the frames; - the sealing element is coated with grease; - the closure element comprises at least two superposed sheets, which are arranged so that they overlap in the direction perpendicular to the interval separating the two construction elements and that the lateral edges of the element obturation, arranged substantially parallel to the interval, belong to separate sheets. One of the sheets is preferably arranged so as to cover the entire gap separating the two construction elements.
  • Another aspect of the present invention relates to a flexible road joint between two sections of road respectively supported by two contiguous building elements, a rolling surface being formed by a coating deposited on the building elements and interrupted above 'an interval separating the two construction elements to form a trench of width greater than that of said interval.
  • the flexible joint is located in the trench and includes a sealing element covering said gap at the bottom of the trench, and a mixture of aggregates and flexible binder. It also comprises openwork reinforcements, attached to the two construction elements on either side of the closure element and embedded in the mixture of aggregates and binder.
  • FIG. 1 is a cross-sectional view of a flexible joint executed in accordance with the invention.
  • FIG. 2 is a partial cross-sectional view of an alternative embodiment of the seal.
  • the roadway shown at a joint in Figure 1 is built on elements 1 which are for example concrete.
  • the elements 1 can be sections of the bridge deck and / or abutments. Displacements may occur between the contiguous elements 1, so that an interval is left between them, the thickness e of which typically varies between 10 and 60 mm.
  • a conventional coating 2 is deposited on the elements 1.
  • This coating 2 is interrupted above the interval between the elements 1, in order to define a trench of width L greater than e .
  • the width L of the trench distributed symmetrically on either side of the interval e, can be from 25 to 70 cm.
  • This trench is intended to receive the flexible joint according to the invention, which comprises a mixture 3 of aggregates and flexible binder, an element 4 for closing the gap e, and reinforcements 5.
  • the binder used in the flexible material 3 can be of any known composition. In a preferred embodiment, it is a two-component binder, which forms a flexible matrix by chemical reaction at room temperature between molecules included in the two components. This matrix can in particular be based on polyurethane, supplemented with bitumen.
  • the closure element 4 is a metal sheet placed on the interval e at the bottom of the trench. It prevents the aggregates and the binder from infiltrating in this interval. The underside of the sheet 4 also allows sliding of the concrete elements 1, in order to distribute the compression of the joint over a greater width. The width of this sheet 4 is for example from 10 to 35 cm.
  • the reinforcements 5 are arranged on each side of the trench, on either side of the sealing plate 4. These reinforcements 5 are perforated so as to allow at least some of the aggregates from the mixture to pass through. Thus, certain coated aggregates of binder pass behind the frames 5, and others remain in the openings which they comprise. After the binder has set, the reinforcements 5 are therefore firmly held in the flexible material 3.
  • the reinforcements 5 are attached to the concrete elements 1 on each side of the trench, in order to offer a resistance to tearing of the flexible material 3 of the joint in the areas where it is stressed in tension when the elements 1 tend to s' move away from each other.
  • FIG. 1 illustrates a simple and convenient means of attaching the reinforcements 5.
  • First cylindrical holes 6 are drilled in the concrete of the elements 1, then metallic rods 7 are engaged in these holes 6.
  • the rods 7 have for example a diameter slightly greater than that of the holes 6 into which they are forcibly inserted.
  • the upper end of the rods 7 is allowed to protrude into the trench, and when the reinforcements 5 are placed, the protruding ends of the rods 7 are passed through the openings present in the reinforcements 5.
  • the upper ends of the rods 7 to hold the reinforcements in place 5.
  • FIG. 1 also shows a preferred profile of the reinforcements 5 which, in general, will extend over the entire length of the joint (perpendicular to the plane in Figure 1).
  • the frame 5 is preferably made from a sheet or grid of expanded metal having apertures of appropriate size (a few centimeters) and shaped according to the profile shown.
  • a first portion 5a of the frame rests on the bottom of the trench, between the shutter plate 4 and the edge of the covering 2.
  • This portion 5a has a convex shape, in order to allow the passage of the material 3, including the aggregates, between the reinforcement and the surface of the concrete element 1.
  • the convex portion 5a has a typical height of 2 to 3 centimeters. It allows any traction forces to be transmitted to the flexible material 3 before its interface with the coating 2. As it is near this interface that the risks of tearing are greatest, this results in better resistance of the joint.
  • a second portion 5b of the frame is erected along the end surface of the covering 2 bordering the trench. This portion 5b makes it possible to arm in its most fragile zone and to distribute the reinforcement over its thickness.
  • the width of the first portion 5a is for example from 8 to 10 centimeters, and the height of the second portion 5b can be of the order of half that of the covering 2.
  • the material 3 is installed.
  • One can for example spread a layer of aggregates then pour the binder prepared in the fluid state until completely drowning the layer of aggregates, and repeat the operation until reaching the surface of the covering 2.
  • a layer of gravel 8 is then spread in order to give the joint a surface appearance similar to that of the covering 2.
  • the closure plate 4 is advantageously coated with a grease, for example silicone, to facilitate the sliding of the concrete elements 1 and to avoid the adhesion of the material 3. Of course, it is necessary to ensure that this grease does not overflow next to the sheet. It is advantageous to provide that the sheet 4 is relatively wide, in order to distribute the compression of the joint over a greater width. However, it is preferable to prevent the edges of the sheet 4 from abutting against the reinforcements 5 when the elements 1 come together.
  • a grease for example silicone
  • this closure element can subdivide this closure element into two superimposed parts (or more), arranged parallel to the gap between the two concrete elements 1, so as to overlap in the direction perpendicular to this interval, as illustrated in FIG. 2.
  • the lateral edges of the closure element composed of the two sheets 4a, 4b belong to separate sheets.
  • the larger sheet 4a rests on the two elements 1, and is covered by the narrower sheet 4b which protrudes at one of the ends.
  • adhesive tape 9 can be used.
  • the two sheets 4a, 4b coated with grease can slide one on the other, which prevents them from coming up against the reinforcements 5.
  • This arrangement also prevents the lateral edges of the closure element from tending to punch or excessively deform the flexible material 3 when the elements 1 come together.

Landscapes

  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Road Paving Structures (AREA)
  • Bridges Or Land Bridges (AREA)

Abstract

The invention concerns a joint set between two road sections respectively supported by two adjacent structural elements (1). A running surface is formed by a surfacing coat (2) deposited on the elements and interrupted above the space which separates them to form a trench. A sealing element (4) is placed at the bottom of the trench covering the space, then aggregates and a binder are poured in forming a soft material (3) after setting. Before the aggregates and the binder are poured in, reinforcing elements are set in the trench which are fixed to the two structural elements on either side of the sealing element. Said reinforcing elements are open-worked to allow the aggregates to pass through. Thus they enable to reinforce the joints in the zones where it is likely to be pulled by the tensile force tending to cause the elements to be spaced apart.

Description

PROCEDE DE REALISATION D'UN JOINT DE CHAUSSEE SOUPLE. ET JOINT OBTENU PAR UN TEL PROCEDE PROCESS FOR PRODUCING A FLEXIBLE ROAD JOINT. AND JOINT OBTAINED BY SUCH A PROCESS
La présente invention concerne le domaine des joints de chaussée souples, du type comportant un matériau souple, résultant d'un mélange de granulats et de liant, comblant une tranchée formée dans le revêtement de la chaussée au niveau d'un intervalle entre deux éléments de construction supportant le revêtement.The present invention relates to the field of flexible road joints, of the type comprising a flexible material, resulting from a mixture of aggregates and binder, filling a trench formed in the coating of the road at an interval between two elements of construction supporting the covering.
De tels joints souples sont utilisés, par exemple, entre les sections successives du tablier d'un pont lorsque l'amplitude des mouvements d'écartement (souffle) entre ces sections n'est pas trop importante. Ils constituent une solution économique, et procurent en outre une continuité de la surface de roulement et un bon confort acoustique.Such flexible joints are used, for example, between the successive sections of the bridge deck when the amplitude of the spreading movements (breath) between these sections is not too great. They are an economical solution, and also provide continuity of the running surface and good acoustic comfort.
Les compositions utilisées pour réaliser de tels joints sont le plus souvent à base d'un liant thermoplastique. A titre d'exemples, la demande de brevet européen 0 000 642 décrit un joint souple dont le liant est à base de bitume et de déchets caoutchouteux, et le brevet français 2 562 108 décrit un joint dont le liant est à base de bitume et d'un élastomère vulcanisé au soufre.The compositions used to produce such seals are most often based on a thermoplastic binder. By way of examples, European patent application 0 000 642 describes a flexible joint whose binder is based on bitumen and rubbery waste, and French patent 2,562,108 describes a joint whose binder is based on bitumen and of a sulfur vulcanized elastomer.
On voit également apparaître des liants bi-composants dans lesquels la formation de la matrice souple résulte d'une réticulation de produits respectivement inclus dans les deux composants. L'avantage de ces dernières formulations est qu'elles peuvent être mises en œuvre à température ambiante, ce qui simplifie l'exécution des travaux.Two-component binders are also seen appearing in which the formation of the flexible matrix results from crosslinking of products respectively included in the two components. The advantage of these latter formulations is that they can be implemented at room temperature, which simplifies the execution of the work.
Les améliorations dans les matériaux entrant dans la composition du liant entraînent une moindre sensibilité du joint au phénomène de ramollissement qui tend à entraîner la formation d'ornières en travers de la chaussée. Du fait qu'on obtient un meilleur compromis entre la souplesse du joint et sa sensibilité au ramollissement, on est en mesure d'utiliser ce genre de joint dans des ouvrages où le souffle est plus important.Improvements in the materials used in the composition of the binder cause the joint to be less sensitive to the softening phenomenon which tends to cause ruts to form across the road. Because we obtain a better compromise between the flexibility of the joint and its sensitivity to softening, we are able to use this kind of joint in works where the breath is more important.
Néanmoins, le joint reste fragile lorsqu'il est sollicité en traction du fait d'un mouvement d'écartement entre les deux supports de chaussée adjacents. Le matériau souple risque d'être arraché de son support près de la bordure du revêtement, ce qui fait perdre la continuité du revêtement de la chaussée et la fonction d'étanchéité du joint. Ce risque augmente lorsqu'on utilise ce type de joint pour des souffles plus importants. Un but principal de la présente invention est d'améliorer le comportement d'un tel joint souple lorsqu'il est soumis à des efforts de traction. L'invention propose ainsi un procédé de réalisation d'un joint souple entre deux sections de chaussée respectivement supportées par deux éléments de construction contigus, une surface de roulement étant formée par un revêtement déposé sur les éléments de construction et interrompu au- dessus d'un intervalle séparant les deux éléments de construction pour former une tranchée de largeur supérieure à celle dudit intervalle. Selon ce procédé, on place au fond de la tranchée un élément d'obturation couvrant ledit intervalle, et on verse dans la tranchée des granulats et un liant qui forment un matériau souple après prise. Avant de verser les granulats et le liant, on installe dans la tranchée des armatures qu'on attache aux deux éléments de construction de part et d'autre de l'élément d'obturation, ces armatures étant ajourées de manière à permettre le passage de certains au moins des granulats du mélange. Les armatures permettent de renforcer le joint dans les zones où le risque d'arrachement sous les efforts de traction est plus important. Le fait que les armatures soient ajourées permet aux granulats et au liant de passer de part et d'autre de l'armature et en son sein. Il en résulte une bonne efficacité du renforcement. Dans une réalisation particulièrement avantageuse, le liant est formé de plusieurs composants, comprenant de préférence un polyuréthane, mélangés et mis en œuvre à température ambiante.However, the joint remains fragile when it is stressed in tension due to a spreading movement between the two adjacent road supports. The flexible material may be torn from its support near the edge of the coating, which makes the continuity of the pavement coating and the sealing function of the joint lose. This risk increases when this type of seal is used for larger blows. A main object of the present invention is to improve the behavior of such a flexible joint when subjected to tensile forces. The invention thus provides a method of producing a flexible joint between two sections of roadway respectively supported by two adjacent construction elements, a rolling surface being formed by a coating deposited on the construction elements and interrupted above an interval separating the two construction elements to form a trench of width greater than that of said interval. According to this method, a sealing element covering said interval is placed at the bottom of the trench, and granules and a binder are poured into the trench which form a flexible material after setting. Before pouring the aggregates and the binder, reinforcements are installed in the trench which are attached to the two construction elements on either side of the obturation element, these reinforcements being perforated so as to allow the passage of at least some of the aggregates in the mixture. The reinforcements reinforce the joint in areas where the risk of tearing under the tensile stress is greater. The fact that the reinforcements are perforated allows the aggregates and the binder to pass on either side of the reinforcement and within it. This results in a good effectiveness of the reinforcement. In a particularly advantageous embodiment, the binder is formed of several components, preferably comprising a polyurethane, mixed and used at room temperature.
Dans des modes d'exécution particuliers du procédé :In particular modes of execution of the process:
- chaque armature comporte une portion convexe reposant sur le fond de la tranchée ;- Each frame has a convex portion resting on the bottom of the trench;
- chaque armature comporte une première portion reposant sur le fond de la tranchée et une seconde portion dressée le long d'une surface d'extrémité du revêtement bordant la tranchée ;- Each frame has a first portion resting on the bottom of the trench and a second portion erected along an end surface of the covering bordering the trench;
- chaque armature est un morceau de métal déployé ; - pour attacher les armatures, on perce des trous dans les éléments de construction au fond de la tranchée, on engage des tiges métalliques dans ces trous en laissant dépasser leurs extrémités supérieures qui passent à travers les armatures ajourées, et on rabat les extrémités supérieures des tiges au-dessus des armatures ; - l'élément d'obturation est enduit de graisse ; - l'élément d'obturation comprend au moins deux tôles superposées, qu'on dispose de façon qu'elles se chevauchent suivant la direction perpendiculaire à l'intervalle séparant les deux éléments de construction et que les bords latéraux de l'élément d'obturation, disposés sensiblement parallèlement à l'intervalle, appartiennent à des tôles distinctes. L'une des tôles est de préférence disposée de façon à couvrir tout l'intervalle séparant les deux éléments de construction.- each frame is a piece of expanded metal; - to attach the reinforcements, holes are drilled in the construction elements at the bottom of the trench, metal rods are engaged in these holes leaving their upper ends protruding through the openwork reinforcements, and the upper ends of the rods above the frames; - the sealing element is coated with grease; - the closure element comprises at least two superposed sheets, which are arranged so that they overlap in the direction perpendicular to the interval separating the two construction elements and that the lateral edges of the element obturation, arranged substantially parallel to the interval, belong to separate sheets. One of the sheets is preferably arranged so as to cover the entire gap separating the two construction elements.
Un autre aspect de la présente invention se rapporte à un joint de chaussée souple entre deux sections de chaussée respectivement supportées par deux éléments de construction contigus, une surface de roulement étant formée par un revêtement déposé sur les éléments de construction et interrompu au-dessus d'un intervalle séparant les deux éléments de construction pour former une tranchée de largeur supérieure à celle dudit intervalle. Le joint souple est situé dans la tranchée et comprend un élément d'obturation couvrant ledit intervalle au fond de la tranchée, et un mélange de granulats et de liant souple. Il comprend en outre des armatures ajourées, attachées aux deux éléments de construction de part et d'autre de l'élément d'obturation et noyées dans le mélange de granulats et de liant.Another aspect of the present invention relates to a flexible road joint between two sections of road respectively supported by two contiguous building elements, a rolling surface being formed by a coating deposited on the building elements and interrupted above 'an interval separating the two construction elements to form a trench of width greater than that of said interval. The flexible joint is located in the trench and includes a sealing element covering said gap at the bottom of the trench, and a mixture of aggregates and flexible binder. It also comprises openwork reinforcements, attached to the two construction elements on either side of the closure element and embedded in the mixture of aggregates and binder.
D'autres particularités et avantages de la présente invention apparaîtront dans la description ci-après d'un exemple de réalisation non limitatif, en référence au dessin annexé, dans lequel :Other particularities and advantages of the present invention will appear in the description below of a nonlimiting exemplary embodiment, with reference to the appended drawing, in which:
- la figure 1 est une vue en coupe transversale d'un joint souple exécuté conformément à l'invention ; et- Figure 1 is a cross-sectional view of a flexible joint executed in accordance with the invention; and
- la figure 2 est une vue partielle en coupe transversale d'une variante de réalisation du joint.- Figure 2 is a partial cross-sectional view of an alternative embodiment of the seal.
La chaussée, représentée au niveau d'un joint sur la figure 1 est construite sur des éléments 1 qui sont par exemple en béton. Dans le cas où la chaussée se trouve sur un pont, les éléments 1 peuvent être des sections du tablier du pont et/ou des culées. Il peut se produire des déplacements entre les éléments contigus 1 , de sorte qu'on laisse entre eux un intervalle, dont l'épaisseur e varie typiquement entre 10 et 60 mm.The roadway, shown at a joint in Figure 1 is built on elements 1 which are for example concrete. In the case where the roadway is on a bridge, the elements 1 can be sections of the bridge deck and / or abutments. Displacements may occur between the contiguous elements 1, so that an interval is left between them, the thickness e of which typically varies between 10 and 60 mm.
Pour former la surface de roulement de la chaussée, un revêtement classique 2 est déposé sur les éléments 1. On interrompt ce revêtement 2 au- dessus de l'intervalle entre les éléments 1 , afin de définir une tranchée de largeur L plus grand que e. A titre d'exemple, la largeur L de la tranchée, répartie symétriquement de part et d'autre de l'intervalle e, peut être de 25 à 70 cm.To form the road surface of the roadway, a conventional coating 2 is deposited on the elements 1. This coating 2 is interrupted above the interval between the elements 1, in order to define a trench of width L greater than e . For example, the width L of the trench, distributed symmetrically on either side of the interval e, can be from 25 to 70 cm.
Cette tranchée est destinée à recevoir le joint souple selon l'invention, qui comprend un mélange 3 de granulats et de liant souple, un élément 4 d'obturation de l'intervalle e, et des armatures 5. Le liant utilisé dans le matériau souple 3 peut être de toute composition connue. Dans une réalisation préférée, il s'agit d'un liant bi-composant, qui forme une matrice souple par réaction chimique à température ambiante entre des molécules incluses dans les deux composants. Cette matrice peut notamment être à base de polyuréthane, complété par du bitume. Dans l'exemple de la figure 1 , l'élément d'obturation 4 est une tôle métallique posée sur l'intervalle e au fond de la tranchée. Il évite que les granulats et le liant s'infiltrent dans cet intervalle. La face inférieure de la tôle 4 autorise en outre un glissement des éléments en béton 1 , afin de répartir la compression du joint sur une plus grande largeur. La largeur de cette tôle 4 est par exemple de 10 à 35 cm.This trench is intended to receive the flexible joint according to the invention, which comprises a mixture 3 of aggregates and flexible binder, an element 4 for closing the gap e, and reinforcements 5. The binder used in the flexible material 3 can be of any known composition. In a preferred embodiment, it is a two-component binder, which forms a flexible matrix by chemical reaction at room temperature between molecules included in the two components. This matrix can in particular be based on polyurethane, supplemented with bitumen. In the example of Figure 1, the closure element 4 is a metal sheet placed on the interval e at the bottom of the trench. It prevents the aggregates and the binder from infiltrating in this interval. The underside of the sheet 4 also allows sliding of the concrete elements 1, in order to distribute the compression of the joint over a greater width. The width of this sheet 4 is for example from 10 to 35 cm.
Les armatures 5 sont disposées de chaque côté de la tranchée, de part et d'autre de la tôle d'obturation 4. Ces armatures 5 sont ajourées de manière à laisser passer certains au moins des granulats du mélange 3. Ainsi, certains granulats enrobés de liant passent derrière les armatures 5, et d'autres restent dans les ouvertures qu'elles comportent. Après la prise du liant, les armatures 5 sont donc fermement maintenues dans le matériau souple 3.The reinforcements 5 are arranged on each side of the trench, on either side of the sealing plate 4. These reinforcements 5 are perforated so as to allow at least some of the aggregates from the mixture to pass through. Thus, certain coated aggregates of binder pass behind the frames 5, and others remain in the openings which they comprise. After the binder has set, the reinforcements 5 are therefore firmly held in the flexible material 3.
Les armatures 5 sont attachées aux éléments en béton 1 de chaque côté de la tranchée, afin d'offrir une résistance à l'arrachement du matériau souple 3 du joint dans les zones où il est sollicité en traction lorsque les éléments 1 tendent à s'écarter l'un de l'autre.The reinforcements 5 are attached to the concrete elements 1 on each side of the trench, in order to offer a resistance to tearing of the flexible material 3 of the joint in the areas where it is stressed in tension when the elements 1 tend to s' move away from each other.
La figure 1 illustre un moyen simple et commode d'attacher les armatures 5. On perce d'abord des trous cylindriques 6 dans le béton des éléments 1 , puis on engage des tiges métalliques 7 dans ces trous 6. Les tiges 7 ont par exemple un diamètre légèrement supérieur à celui des trous 6 dans lesquels elles sont enfoncées en force. On laisse dépasser l'extrémité supérieure des tiges 7 dans la tranchée, et au moment de poser les armatures 5, on fait passer les extrémités dépassantes des tiges 7 à travers les ouvertures présentes dans les armatures 5. On peut alors rabattre les extrémités supérieures des tiges 7 pour tenir en place les armatures 5. La figure 1 montre également un profil préféré des armatures 5 qui, en général, s'étendront sur toute la longueur du joint (perpendiculairement au plan de la figure 1 ).FIG. 1 illustrates a simple and convenient means of attaching the reinforcements 5. First cylindrical holes 6 are drilled in the concrete of the elements 1, then metallic rods 7 are engaged in these holes 6. The rods 7 have for example a diameter slightly greater than that of the holes 6 into which they are forcibly inserted. The upper end of the rods 7 is allowed to protrude into the trench, and when the reinforcements 5 are placed, the protruding ends of the rods 7 are passed through the openings present in the reinforcements 5. The upper ends of the rods 7 to hold the reinforcements in place 5. FIG. 1 also shows a preferred profile of the reinforcements 5 which, in general, will extend over the entire length of the joint (perpendicular to the plane in Figure 1).
L'armature 5 est de préférence réalisée à partir d'une tôle ou grille de métal déployé présentant des ouvertures de taille appropriée (quelques centimètres) et mis en forme suivant le profil représenté. Une première portion 5a de l'armature repose sur le fond de la tranchée, entre la tôle d'obturation 4 et la bordure du revêtement 2. Cette portion 5a a une forme convexe, afin de permettre le passage du matériau 3, y compris les granulats, entre l'armature et la surface de l'élément en béton 1. La portion convexe 5a a une hauteur typique de 2 à 3 centimètres. Elle permet de transmettre les éventuels efforts de traction au matériau souple 3 avant son interface avec le revêtement 2. Comme c'est près de cette interface que les risques d'arrachement sont les plus grands, il en résulte une meilleure résistance du joint.The frame 5 is preferably made from a sheet or grid of expanded metal having apertures of appropriate size (a few centimeters) and shaped according to the profile shown. A first portion 5a of the frame rests on the bottom of the trench, between the shutter plate 4 and the edge of the covering 2. This portion 5a has a convex shape, in order to allow the passage of the material 3, including the aggregates, between the reinforcement and the surface of the concrete element 1. The convex portion 5a has a typical height of 2 to 3 centimeters. It allows any traction forces to be transmitted to the flexible material 3 before its interface with the coating 2. As it is near this interface that the risks of tearing are greatest, this results in better resistance of the joint.
Une seconde portion 5b de l'armature est dressée le long de la surface d'extrémité du revêtement 2 bordant la tranchée. Cette portion 5b permet d'armer dans sa zone la plus fragile et de répartir le renforcement sur son épaisseur. La largeur de la première portion 5a est par exemple de 8 à 10 centimètres, et la hauteur de la seconde portion 5b peut être de l'ordre de la moitié de celle du revêtement 2. Après avoir mis en place la tôle d'obturation 4 et les armatures 5, on installe le matériau 3. On peut par exemple épandre une couche de granulats puis verser le liant préparé à l'état fluide jusqu'à noyer complètement la couche de granulats, et répéter l'opération jusqu'à atteindre la surface du revêtement 2. On épand alors une couche de gravillons 8 afin de donner au joint un aspect de surface similaire à celui du revêtement 2.A second portion 5b of the frame is erected along the end surface of the covering 2 bordering the trench. This portion 5b makes it possible to arm in its most fragile zone and to distribute the reinforcement over its thickness. The width of the first portion 5a is for example from 8 to 10 centimeters, and the height of the second portion 5b can be of the order of half that of the covering 2. After having put in place the shutter plate 4 and the reinforcements 5, the material 3 is installed. One can for example spread a layer of aggregates then pour the binder prepared in the fluid state until completely drowning the layer of aggregates, and repeat the operation until reaching the surface of the covering 2. A layer of gravel 8 is then spread in order to give the joint a surface appearance similar to that of the covering 2.
La tôle d'obturation 4 est avantageusement enduite d'une graisse, par exemple de silicone, pour faciliter le glissement des éléments en béton 1 et pour éviter l'adhérence du matériau 3. Bien entendu, il convient de faire en sorte que cette graisse ne déborde pas à côté de la tôle. Il y a avantage à prévoir que la tôle 4 soit relativement large, afin de répartir la compression du joint sur une plus grande largeur. Toutefois, il est préférable d'éviter que les bords de la tôle 4 viennent buter contre les armatures 5 lorsque les éléments 1 se rapprochent.The closure plate 4 is advantageously coated with a grease, for example silicone, to facilitate the sliding of the concrete elements 1 and to avoid the adhesion of the material 3. Of course, it is necessary to ensure that this grease does not overflow next to the sheet. It is advantageous to provide that the sheet 4 is relatively wide, in order to distribute the compression of the joint over a greater width. However, it is preferable to prevent the edges of the sheet 4 from abutting against the reinforcements 5 when the elements 1 come together.
Pour cela, on peut subdiviser cet élément d'obturation en deux parties superposées (ou davantage), disposées parallèlement à l'intervalle séparant les deux éléments en béton 1 , de façon à se chevaucher suivant la direction perpendiculaire à cet intervalle, comme illustré par la figure 2. Les bords latéraux de l'élément d'obturation composés des deux tôles 4a, 4b appartiennent à des tôles distinctes. La tôle la plus large 4a prend appui sur les deux éléments 1 , et est recouverte par la tôle la moins large 4b qui dépasse à l'une des extrémités. Pour assembler ces deux tôles 4a, 4b, on peut utiliser du ruban adhésif 9. Ainsi, lors des déplacements des éléments 1 , les deux tôles 4a, 4b enduites de graisse peuvent coulisser l'une sur l'autre, ce qui leur évite de venir buter sur les armatures 5. Cet agencement évite également que les bords latéraux de l'élément d'obturation tendent à poinçonner ou à déformer excessivement le matériau souple 3 lorsque les éléments 1 se rapprochent. For this, we can subdivide this closure element into two superimposed parts (or more), arranged parallel to the gap between the two concrete elements 1, so as to overlap in the direction perpendicular to this interval, as illustrated in FIG. 2. The lateral edges of the closure element composed of the two sheets 4a, 4b belong to separate sheets. The larger sheet 4a rests on the two elements 1, and is covered by the narrower sheet 4b which protrudes at one of the ends. To assemble these two sheets 4a, 4b, adhesive tape 9 can be used. Thus, when the elements 1 move, the two sheets 4a, 4b coated with grease can slide one on the other, which prevents them from coming up against the reinforcements 5. This arrangement also prevents the lateral edges of the closure element from tending to punch or excessively deform the flexible material 3 when the elements 1 come together.

Claims

R E V E N D I C A T I O N S
1. Procédé de réalisation d'un joint souple entre deux sections de chaussée respectivement supportées par deux éléments de construction contigus (1 ), une surface de roulement étant formée par un revêtement (2) déposé sur les éléments de construction et interrompu au-dessus d'un intervalle séparant les deux éléments de construction pour former une tranchée de largeur (L) supérieure à celle (e) dudit intervalle, dans lequel on place au fond de la tranchée un élément d'obturation (4 ; 4a, 4b) couvrant ledit intervalle, et on verse dans la tranchée des granulats et un liant qui forment un matériau souple (3) après prise, caractérisé en qu'avant de verser les granulats et le liant, on installe dans la tranchée des armatures (5) qu'on attache aux deux éléments de construction de part et d'autre de l'élément d'obturation, ces armatures étant ajourées de manière à permettre le passage de certains au moins des granulats.1. Method for producing a flexible joint between two sections of roadway respectively supported by two contiguous construction elements (1), a rolling surface being formed by a coating (2) deposited on the construction elements and interrupted above an interval separating the two construction elements to form a trench of width (L) greater than that (e) of said interval, in which a sealing element (4; 4a, 4b) is placed at the bottom of the trench said interval, and poured into the trench aggregates and a binder which form a flexible material (3) after setting, characterized in that before pouring the aggregates and the binder, reinforcements (5) are installed in the trench that it attaches to the two construction elements on either side of the closure element, these frames being perforated so as to allow the passage of at least some of the aggregates.
2. Procédé selon la revendication 1 , dans lequel chaque armature (5) comporte une portion convexe (5a) reposant sur le fond de la tranchée.2. Method according to claim 1, wherein each frame (5) comprises a convex portion (5a) resting on the bottom of the trench.
3. Procédé selon la revendication 1 ou 2, dans lequel chaque armature (5) comporte une première portion (5a) reposant sur le fond de la tranchée et une seconde portion (5b) dressée le long d'une surface d'extrémité du revêtement (2) bordant la tranchée.3. Method according to claim 1 or 2, wherein each frame (5) comprises a first portion (5a) resting on the bottom of the trench and a second portion (5b) erected along an end surface of the coating (2) bordering the trench.
4. Procédé selon l'une quelconque des revendications 1 à 3, dans lequel chaque armature (5) est un morceau de métal déployé.4. Method according to any one of claims 1 to 3, wherein each frame (5) is a piece of expanded metal.
5. Procédé selon l'une quelconque des revendications 1 à 4, dans lequel, pour attacher les armatures (5), on perce des trous (6) dans les éléments de construction (1 ) au fond de la tranchée, on engage des tiges métalliques (7) dans ces trous en laissant dépasser leurs extrémités supérieures, on fait passer les extrémités supérieures des tiges à travers les armatures ajourées, et on rabat les extrémités supérieures des tiges au-dessus des armatures. 5. Method according to any one of claims 1 to 4, wherein, to attach the frames (5), holes are drilled (6) in the construction elements (1) at the bottom of the trench, rods are engaged metallic (7) in these holes leaving their upper ends protruding, the upper ends of the rods are passed through the openwork reinforcements, and the upper ends of the rods are folded over the reinforcements.
6. Procédé selon l'une quelconque des revendications 1 à 5, dans lequel le liant est formé de plusieurs composants mélangés et mis en œuvre à température ambiante.6. Method according to any one of claims 1 to 5, wherein the binder is formed of several components mixed and implemented at room temperature.
7. Procédé selon la revendication 6, dans lequel les composants du liant comprennent un polyuréthane.7. The method of claim 6, wherein the components of the binder comprise a polyurethane.
8. Procédé selon l'une quelconque des revendications 1 à 7, dans lequel l'élément d'obturation (4 ; 4a, 4b) est enduit de graisse.8. Method according to any one of claims 1 to 7, wherein the sealing element (4; 4a, 4b) is coated with grease.
9. Procédé selon l'une quelconque des revendications 1 à 8, dans lequel l'élément d'obturation comprend au moins deux tôles superposées (4a, 4b), qu'on dispose de façon qu'elles se chevauchent suivant la direction perpendiculaire à l'intervalle séparant les deux éléments de construction (1 ) et que les bords latéraux de l'élément d'obturation, disposés sensiblement parallèlement à l'intervalle, appartiennent à des tôles distinctes.9. Method according to any one of claims 1 to 8, wherein the closure element comprises at least two superimposed sheets (4a, 4b), which are arranged so that they overlap in the direction perpendicular to the interval separating the two construction elements (1) and that the lateral edges of the closure element, arranged substantially parallel to the interval, belong to separate sheets.
10. Procédé selon la revendication 9, dans lequel on dispose l'une des tôles (4a) de façon qu'elle couvre tout l'intervalle séparant les deux éléments de construction (1 ).10. The method of claim 9, wherein there is one of the sheets (4a) so that it covers the entire gap between the two construction elements (1).
11. Joint de chaussée souple entre deux sections de chaussée respectivement supportées par deux éléments de construction contigus (1 ), une surface de roulement étant formée par un revêtement (2) déposé sur les éléments de construction et interrompu au-dessus d'un intervalle séparant les deux éléments de construction pour former une tranchée de largeur (L) supérieure à celle (e) dudit intervalle, le joint souple étant situé dans la tranchée et comprenant un élément d'obturation (4) couvrant ledit intervalle au fond de la tranchée, et un mélange (3) de granulats et de liant souple, caractérisé en qu'il comprend en outre des armatures ajourées (5), attachées aux deux éléments de construction de part et d'autre de l'élément d'obturation et noyées dans le mélange de granulats et de liant.11. Flexible pavement joint between two sections of pavement respectively supported by two contiguous construction elements (1), a running surface being formed by a coating (2) deposited on the construction elements and interrupted over an interval separating the two construction elements to form a trench of width (L) greater than that (e) of said gap, the flexible joint being located in the trench and comprising a closure element (4) covering said gap at the bottom of the trench , and a mixture (3) of aggregates and flexible binder, characterized in that it further comprises perforated reinforcements (5), attached to the two construction elements on either side of the closure element and embedded in the mixture of aggregates and binder.
12. Joint selon la revendication 11 , dans lequel chaque armature (5) comporte une portion convexe (5a) reposant sur le fond de la tranchée.12. Joint according to claim 11, wherein each frame (5) comprises a convex portion (5a) resting on the bottom of the trench.
13. Joint selon la revendication 11 ou 12, dans lequel chaque armature13. Joint according to claim 11 or 12, wherein each frame
(5) comporte une première portion (5a) reposant sur le fond de la tranchée et une seconde portion (5b) dressée le long d'une surface d'extrémité du revêtement (2) bordant la tranchée.(5) comprises a first portion (5a) resting on the bottom of the trench and a second portion (5b) erected along an end surface of the covering (2) bordering the trench.
14. Joint selon l'une quelconque des revendications 11 à 13, dans lequel chaque armature (5) est un morceau de métal déployé.14. Joint according to any one of claims 11 to 13, wherein each frame (5) is a piece of expanded metal.
15. Joint selon l'une quelconque des revendications 11 à 14, dans lequel les armatures (5) sont fixées aux éléments de construction (1 ) au moyen de tiges métalliques (7) engagées dans des trous (6) percés dans les éléments de construction au fond de la tranchée, ces tiges métalliques ayant leurs extrémités supérieures qui dépassent dans la tranchée en traversant les armatures ajourées au-dessus desquelles elles sont rabattues.15. Joint according to any one of claims 11 to 14, wherein the frames (5) are fixed to the construction elements (1) by means of metal rods (7) engaged in holes (6) drilled in the elements of construction at the bottom of the trench, these metal rods having their upper ends which protrude into the trench by crossing the openwork reinforcement above which they are folded down.
16. Joint selon l'une quelconque des revendications 11 à 15, dans lequel le liant souple comprend un mélange de bitume et de polyuréthane.16. Joint according to any one of claims 11 to 15, wherein the flexible binder comprises a mixture of bitumen and polyurethane.
17. Joint selon l'une quelconque des revendications 11 à 16, dans lequel l'élément d'obturation (4 ; 4a, 4b) est enduit de graisse.17. Joint according to any one of claims 11 to 16, wherein the closure element (4; 4a, 4b) is coated with grease.
18. Joint selon l'une quelconque des revendications 11 à 17, dans lequel l'élément d'obturation comprend au moins deux tôles superposées (4a, 4b), qui se chevauchent transversalement à l'intervalle séparant les deux éléments de construction (1 ), et dans lequel les bords latéraux de l'élément d'obturation, disposés sensiblement parallèlement à l'intervalle, appartiennent à des tôles distinctes.18. Joint according to any one of claims 11 to 17, wherein the closure element comprises at least two superimposed sheets (4a, 4b), which overlap transversely to the interval separating the two construction elements (1 ), and in which the lateral edges of the closure element, arranged substantially parallel to the gap, belong to separate sheets.
19. Joint selon la revendication 18, dans lequel l'une des tôles (4a) couvre tout l'intervalle séparant les deux éléments de construction (1 ). 19. Joint according to claim 18, wherein one of the sheets (4a) covers the entire gap between the two construction elements (1).
EP00915290A 1999-04-09 2000-04-05 Method for producing a road joint, and joint obtained by said method Withdrawn EP1086277A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
FR9904469A FR2792012B1 (en) 1999-04-09 1999-04-09 METHOD FOR PRODUCING A FLEXIBLE ROAD JOINT, AND JOINT OBTAINED BY SUCH A METHOD
FR9904469 1999-04-09
PCT/FR2000/000847 WO2000061872A1 (en) 1999-04-09 2000-04-05 Method for producing a road joint, and joint obtained by said method

Publications (1)

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EP1086277A1 true EP1086277A1 (en) 2001-03-28

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EP00915290A Withdrawn EP1086277A1 (en) 1999-04-09 2000-04-05 Method for producing a road joint, and joint obtained by said method

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US (1) US6561728B1 (en)
EP (1) EP1086277A1 (en)
JP (1) JP4121712B2 (en)
AU (1) AU3665400A (en)
CA (1) CA2334983A1 (en)
FR (1) FR2792012B1 (en)
WO (1) WO2000061872A1 (en)

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US20170058511A1 (en) * 2015-08-24 2017-03-02 Carlos E. Pena Ramos System and method for filling construction joint spaces

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AU3665400A (en) 2000-11-14
JP4121712B2 (en) 2008-07-23
CA2334983A1 (en) 2000-10-19
WO2000061872A1 (en) 2000-10-19
US6561728B1 (en) 2003-05-13
FR2792012A1 (en) 2000-10-13
FR2792012B1 (en) 2002-06-07

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