EP1495189B1 - Construction joint - Google Patents

Construction joint Download PDF

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Publication number
EP1495189B1
EP1495189B1 EP03727607A EP03727607A EP1495189B1 EP 1495189 B1 EP1495189 B1 EP 1495189B1 EP 03727607 A EP03727607 A EP 03727607A EP 03727607 A EP03727607 A EP 03727607A EP 1495189 B1 EP1495189 B1 EP 1495189B1
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EP
European Patent Office
Prior art keywords
joint
profiled section
construction elements
bearing
profile
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EP03727607A
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German (de)
French (fr)
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EP1495189A1 (en
Inventor
Guillaume Bernard
Philippe Salmon
Jérôme Stubler
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Soletanche Freyssinet SA
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Freyssinet SAS
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    • 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 seals used to connect construction elements that can move relative to one another and to support external loads (see for example US-A-4,781,489 ).
  • a typical, although non-exclusive, example of such joints relates to road joints.
  • the role of a road joint is to ensure the continuity of the running surface, by filling the gap or hiatus that can separate works of art on which the roadway is built and by allowing a relative movement between the elements, due to dynamic loads and / or thermal deformations.
  • road joints Another requirement generally imposed on road joints is that they are sufficiently sealed to prevent infiltration between the elements of the liquids likely to spread on the road (rainwater, oils, de-icing salts ). The road joints must also collect these liquids to prevent their accumulation at least on the practicable part of the roadway.
  • road joints must have good resistance to abrasion caused by the repeated passage of vehicles on the roadway. They must have a significant resistance to ozone because they are constantly outside and therefore in contact with the surrounding gas, and good resistance to radiation including ultraviolet. They must provide sufficient mechanical strength to withstand the operating loads, ie the weight of the vehicles as well as the dynamic forces that result from their movement. They still have to offer temperature-stable characteristics in the usual range of outdoor temperatures (typically -30 to +40 degrees Celsius). Finally, road joints must have the lowest possible implementation cost in a very competitive market.
  • joints currently exist in materials whose properties more or less meet the aforementioned requirements.
  • joints are used whose deformable part is made of elastomer, especially rubber.
  • seals having a bellows in elastomer that is engaged on both sides of the hiatus in two aluminum profiles, each resting on a piece of art structure supporting the roadway (see for example FR-A-2,758,348 ).
  • the bellows is suspended above the hiatus, without direct contact with the elements.
  • the aluminum profiles are fixed to the structural elements by means of screws and dowels, for example. Steel protective plates screwed onto the mounting profiles can cover the bellows.
  • Another known seal is a prefabricated elastomer seal encasing cast iron inserts.
  • the inserts are thus protected against corrosion by the elastomeric material which coats them.
  • this coating is quite complicated to produce industrially.
  • Such a seal further comprises a thinned portion of elastomer integral with the coating of the inserts and suspended above the hiatus. This thin portion may be for example in the form of concave bellows.
  • the seal is attached to the building elements by means of screws passing through the metal inserts. This type of seal is generally molded on lengths of the order of one meter.
  • An object of the present invention is to provide construction joints, including road joints, which are of a low manufacturing cost and very easy to install.
  • the invention thus proposes a construction joint to be interposed between two adjacent building elements, comprising a one-piece profile of thermoplastic material having two bearing portions on the two construction elements, respectively, arranged to support external loads exerted occasionally on the construction elements, and a deformable portion extending between the two support portions to allow relative movement between the two building elements.
  • thermoplastics respond well to various requirements imposed by the functions of construction joints, in particular in terms of elasticity, sealing and resistance to operating loads.
  • the realization of the seal consisting essentially of a monobloc profile, allows it to have a low manufacturing cost.
  • the seal is furthermore of a very simple implementation, which represents an important advantage.
  • the profile may have a length equal to the width of the building elements, for example the width of the roadway. It can also be shorter, to facilitate its transport, several sections being welded end to end on the site. Welding is facilitated by the use of a thermoplastic material.
  • the figure 1 presents an embodiment of the invention. It shows a road joint 1 straddling two adjacent building elements 5 consisting for example of concrete slabs or bridge deck segments.
  • a roadway 6 is arranged on the upper surface of the building elements 5.
  • the elements 5 being distinct, the roadway 6 would have a discontinuity in the absence of the road joint 1.
  • the road joint 1 ensures continuity of the roadway by connecting building elements 5.
  • the edges of the elements 5 receiving the seal 1 are likely to undergo movement relative to each other, especially when vehicles are traveling on the roadway 6 or because of thermal expansion of the elements.
  • the road joint 1 absorbs any deformations resulting from such movements.
  • the road joint shown on the figure 1 essentially consists of a single piece profile 1 made of a thermoplastic material.
  • Thermoplastics are an important class of synthetic materials. They are derived from linear or slightly branched polymers. One of the characteristics of thermoplastics is that they soften under the action of heat and solidify by cooling in a new shape, which allows easy welding by local heating.
  • Thermoplastics also have, in general, properties, which make them particularly suitable for meeting the requirements of a road joint, as described above. In particular, they have sufficient elasticity to allow significant deformation, as well as a seal against liquids, and good mechanical strength to withstand operating loads such as vehicle weight support and dynamic effects that their movements engender.
  • a road joint thus disposed on construction elements allows the support of the operating loads imposed on the roadway 6 by vehicles that pass or stay on the joint, and absorbs without great risk of rupture of the movements of the elements 5 one compared to each other.
  • the thermoplastic material used for the profile 1 of the road joint is a polyolefin.
  • the polyolefins consist of polymers and copolymers of ethylene, propylene and heavier ethylenic hydrocarbons. In addition, they possess many of the characteristics required for a road joint.
  • the profile 1 can be made of high density polyethylene (HDPE) or polypropylene (PP). It can also be made of any other thermoplastic material, or a combination of polyolefin materials.
  • thermoplastic profile can be extruded according to a conventional method. This profile can be produced so that its length covers the entire width of a roadway (of the order of 7 meters for a roadway comprising two traffic lanes).
  • the one-piece profile 1 comprises two bearing portions 2. These bearing portions rest directly on the construction elements 5 and are in contact on their sides with the roadway 6 as shown in FIG. figure 1 . These bearing portions 2, whose upper face 8 extends in the continuity of the running surface of the roadway 6, are subjected to the loads received by this roadway.
  • the thermoplastic material gives them resistance to these loads, such as the weight of vehicles traveling on the road or the dynamic forces that these vehicles generate.
  • the support portions 2 comprise longitudinal recesses 12, 13 such as those shown in the drawings. Figures 3 and 4 . These recesses allow to limit the amount of thermoplastic material of the seal and therefore their cost. They also reduce the cooling times of the thermoplastic material after extrusion of the profile.
  • the figure 1 also shows a thinner portion 3 of the profile 1 of the road joint. This makes the junction between the two support portions 2. Due to its thinned shape, and the thermoplastic material that composes it, this thinner portion 3 has good deformability when relative movements occur between the elements 5 The elasticity properties of the aforementioned thermoplastic materials also allow this deformation.
  • the thin portion 3 of the roadway joint 1 has a thickness of less than 10 mm.
  • the thin portion 3 is in the form of a concave bellows. This configuration is advantageous in that the thin portion 3 is set back from the roadway 6 which prevents it from being too directly in contact with vehicles on the road, and therefore, to undergo too much abrasion. Furthermore, such a concave structure forms a channel for collecting liquid spreading on the roadway 6 such as runoff water may cause with them oils or deicing salts, which the thermoplastic material is also resistant. This channel discharges the water towards the shoulder of the roadway.
  • the thin portion 3 is in the form of a bi-convex bellow, which improves its robustness and makes it possible to form a double sealing barrier.
  • thermoplastic profile 1 shown in the drawings further comprises longitudinal grooves 7 formed on the upper face 8 of each of the two bearing portions 2. These grooves can extend over the entire length of the profile 1. Advantageously, they are obtained by the shape of the extrusion die of the profile 1.
  • the grooves 7 are intended to receive holding bars 4 which fit together over their entire length.
  • the figure 2 gives a schematic representation in perspective of the road joint of the figure 1 .
  • the holding bars 4 have been placed in the grooves 7 on each of the bearing portions 2 of the thermoplastic profile 1.
  • Their outer profile is adapted to the shape of the grooves 7.
  • These holding bars 4 are aligned. with the profile, and their upper face is flush with the upper face 8 of the bearing portions 2, that is to say the running surface of the roadway 6.
  • the support bars 4 are preferably made of metal, in particular aluminum or Stainless steel. They can extend in one piece over the entire length of the joint. It is also possible to have several successive bars along the length of the joint.
  • the bars 4 serve to maintain the thermoplastic profile in contact with the elements 5 supporting the roadway 6. They have holes 9 distributed along their length, through which are passed fasteners such as screws 10. These pass through the bar 4 and the support portion 2 of the profile to anchor them on the underlying building element. As shown on the figure 2 these bores 9 are advantageously oblong, which gives a certain latitude on the position of the fasteners 10 along the profile, in the case where one would abut against rebars concrete when pierce the element 5 to put in place the anchor pins.
  • the support bars 4 prevent the support portions 2 of the profile from tending to wobble between the fixing screws 10.
  • the holding bars 4 and their fixing mechanism, through the thermoplastic profile, in the structural elements 5, also make it possible to avoid a deformation of the thermoplastic material of the profile 1, which could otherwise appear in the case of dilation for example.

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Road Paving Structures (AREA)
  • Bridges Or Land Bridges (AREA)
  • Joining Of Building Structures In Genera (AREA)
  • Solid-Sorbent Or Filter-Aiding Compositions (AREA)
  • Sampling And Sample Adjustment (AREA)
  • External Artificial Organs (AREA)
  • Heterocyclic Compounds That Contain Two Or More Ring Oxygen Atoms (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Finger-Pressure Massage (AREA)
  • Cold Cathode And The Manufacture (AREA)
  • Filters For Electric Vacuum Cleaners (AREA)

Abstract

The expansion joint (1), between two construction sections (5) e.g. of a highway, is a thermoplastic profile with two mounting points (2) at the ends at the constructions, and take up any forces. A distorting section (3) is between the mountings to take up any movements. Each mounting point has an upper surface (8) to extend the road surface (6) at the constructions. The ends of the joint are held in place by rigid bars (4) with in longitudinal recesses (7).

Description

La présente invention concerne les joints utilisés pour relier des éléments de construction susceptibles de se déplacer l'un par rapport à l'autre et de supporter des charges externes (voir par example US-A-4 781 489 ).The present invention relates to seals used to connect construction elements that can move relative to one another and to support external loads (see for example US-A-4,781,489 ).

Un exemple typique, bien que non exclusif, de tels joints concerne les joints de chaussée. Un joint de chaussée a pour rôle d'assurer la continuité de la surface de roulement, en comblant le vide ou hiatus pouvant séparer des éléments d'ouvrage d'art sur lesquels la chaussée est construite et en autorisant un mouvement relatif entre les éléments, dû aux charges dynamiques et/ou aux déformations thermiques.A typical, although non-exclusive, example of such joints relates to road joints. The role of a road joint is to ensure the continuity of the running surface, by filling the gap or hiatus that can separate works of art on which the roadway is built and by allowing a relative movement between the elements, due to dynamic loads and / or thermal deformations.

Une autre exigence généralement imposée aux joints de chaussée est qu'ils soient suffisamment étanches pour empêcher l'infiltration entre les éléments des liquides susceptibles de se répandre sur la chaussée (eaux de pluie, huiles, sels de dégivrage...). Les joints de chaussée doivent aussi collecter ces liquides pour éviter leur accumulation au moins sur la partie praticable de la chaussée.Another requirement generally imposed on road joints is that they are sufficiently sealed to prevent infiltration between the elements of the liquids likely to spread on the road (rainwater, oils, de-icing salts ...). The road joints must also collect these liquids to prevent their accumulation at least on the practicable part of the roadway.

Au-delà de ces exigences de base, les joints de chaussée doivent avoir une bonne résistance à l'abrasion provoquée par le passage répété des véhicules sur la chaussée. Ils doivent avoir une résistance importante à l'ozone car ils sont constamment à l'extérieur et donc en contact avec les gaz environnants, ainsi qu'une bonne résistance au rayonnement notamment ultraviolet. Ils doivent offrir une résistance mécanique suffisante pour supporter les charges de fonctionnement, c'est-à-dire le poids des véhicules ainsi que les efforts dynamiques qui résultent de leur mouvement. Ils doivent encore offrir des caractéristiques stables en fonction de la température dans la gamme habituelle des températures en extérieur (typiquement de -30 à +40 degrés Celsius). Enfin, les joints de chaussée doivent avoir un coût de mise en oeuvre le plus faible possible, dans un marché très concurrentiel.Beyond these basic requirements, road joints must have good resistance to abrasion caused by the repeated passage of vehicles on the roadway. They must have a significant resistance to ozone because they are constantly outside and therefore in contact with the surrounding gas, and good resistance to radiation including ultraviolet. They must provide sufficient mechanical strength to withstand the operating loads, ie the weight of the vehicles as well as the dynamic forces that result from their movement. They still have to offer temperature-stable characteristics in the usual range of outdoor temperatures (typically -30 to +40 degrees Celsius). Finally, road joints must have the lowest possible implementation cost in a very competitive market.

Des joints de chaussée existent actuellement dans des matériaux dont les propriétés répondent plus ou moins bien aux exigences précitées. De façon classique, on utilise des joints dont la partie déformable est en élastomère, notamment en caoutchouc. On trouve par exemple des joints ayant un soufflet en élastomère qu'on engage de part et d'autre du hiatus dans deux profilés en aluminium, reposant chacun sur un élément d'ouvrage d'art supportant la chaussée (voir par exemple FR-A-2 758 348 ). Dans ce cas, le soufflet est suspendu au-dessus du hiatus, sans contact direct avec les éléments. Les profilés en aluminium sont fixés aux éléments d'ouvrage d'art par l'intermédiaire de vis et de chevilles, par exemple. Des plaques protectrices en acier vissées sur les profilés de fixation peuvent recouvrir le soufflet.Road joints currently exist in materials whose properties more or less meet the aforementioned requirements. Conventionally, joints are used whose deformable part is made of elastomer, especially rubber. For example, seals having a bellows in elastomer that is engaged on both sides of the hiatus in two aluminum profiles, each resting on a piece of art structure supporting the roadway (see for example FR-A-2,758,348 ). In this case, the bellows is suspended above the hiatus, without direct contact with the elements. The aluminum profiles are fixed to the structural elements by means of screws and dowels, for example. Steel protective plates screwed onto the mounting profiles can cover the bellows.

Un autre joint connu est un joint préfabriqué en élastomère enrobant des inserts en fonte. Les inserts sont ainsi protégés contre la corrosion par la matière élastomère qui les enrobe. Toutefois, cet enrobage est assez compliqué à réaliser industriellement. Un tel joint comporte en outre une portion amincie en élastomère solidaire avec l'enrobage des inserts et suspendue au-dessus du hiatus. Cette portion fine peut être par exemple en forme de soufflet concave. Le joint est fixé aux éléments de construction par l'intermédiaire de vis traversant les inserts métalliques. Ce type de joint est généralement moulé sur des longueurs de l'ordre du mètre.Another known seal is a prefabricated elastomer seal encasing cast iron inserts. The inserts are thus protected against corrosion by the elastomeric material which coats them. However, this coating is quite complicated to produce industrially. Such a seal further comprises a thinned portion of elastomer integral with the coating of the inserts and suspended above the hiatus. This thin portion may be for example in the form of concave bellows. The seal is attached to the building elements by means of screws passing through the metal inserts. This type of seal is generally molded on lengths of the order of one meter.

D'autres types de joints de chaussée, destinés à admettre d'assez grandes variations de la largeur du hiatus, ont une portion déformable constituée par un assemblage de pièces mécaniques articulées. On évite ainsi les problèmes posés par le choix d'un matériau élastomère. Mais il s'agit de joints relativement coûteux à cause des pièces assez nombreuses à fabriquer et assembler.Other types of road joints, intended to admit large variations in the width of the hiatus, have a deformable portion constituted by an assembly of articulated mechanical parts. This avoids the problems posed by the choice of an elastomeric material. But these are relatively expensive joints because of the numerous parts to manufacture and assemble.

Un but de la présente invention est de proposer des joints de construction, notamment des joints de chaussée, qui soient d'un faible coût de fabrication et très faciles à poser.An object of the present invention is to provide construction joints, including road joints, which are of a low manufacturing cost and very easy to install.

L'invention propose ainsi un joint de construction à interposer entre deux éléments de construction adjacents, comprenant un profilé monobloc en matière thermoplastique ayant deux portions d'appui sur les deux éléments de construction, respectivement, agencées pour supporter des charges externes exercées occasionnellement sur les éléments de construction, et une portion déformable s'étendant entre les deux portions d'appui pour autoriser un mouvement relatif entre les deux éléments de construction.The invention thus proposes a construction joint to be interposed between two adjacent building elements, comprising a one-piece profile of thermoplastic material having two bearing portions on the two construction elements, respectively, arranged to support external loads exerted occasionally on the construction elements, and a deformable portion extending between the two support portions to allow relative movement between the two building elements.

Diverses matières thermoplastiques répondent bien à diverses exigences imposées par les fonctions des joints de construction, notamment en termes d'élasticité, d'étanchéité et de résistance aux charges de fonctionnement. La réalisation du joint, consistant pour l'essentiel en un profilé monobloc, lui permet d'avoir un coût de fabrication bas. Le joint est en outre d'une mise en oeuvre très simple, ce qui représente un avantage important. Le profilé peut avoir une longueur égale à la largeur des éléments de construction, par exemple à la largeur de la chaussée. Il peut également être plus court, pour faciliter son transport, plusieurs sections étant soudées bout à bout sur le chantier. Le soudage est facilité par l'utilisation d'une matière thermoplastique.Various thermoplastics respond well to various requirements imposed by the functions of construction joints, in particular in terms of elasticity, sealing and resistance to operating loads. The realization of the seal, consisting essentially of a monobloc profile, allows it to have a low manufacturing cost. The seal is furthermore of a very simple implementation, which represents an important advantage. The profile may have a length equal to the width of the building elements, for example the width of the roadway. It can also be shorter, to facilitate its transport, several sections being welded end to end on the site. Welding is facilitated by the use of a thermoplastic material.

Selon des caractéristiques préférées de l'invention :

  • chaque portion d'appui du profilé a une face supérieure prévue pour s'étendre dans la continuité d'une surface de roulement des éléments de construction ;
  • cette face supérieure de chaque portion d'appui présente une gorge longitudinale, le joint comprenant en outre des barrettes de maintien rigides, de préférence métalliques (notamment en aluminium ou en acier inoxydable), placées dans les gorges des portions d'appui, et des organes de fixation pour ancrer les barrettes et les portions d'appui aux éléments de construction ;
  • les barrettes de maintien peuvent présenter des trous oblongs pour recevoir les organes de fixation ;
  • chaque portion d'appui du profilé reçoit une barrette de maintien s'étendant sur sensiblement toute la longueur du joint ;
  • en variante, chaque portion d'appui du profilé reçoit plusieurs barrettes de maintien successives sur la longueur du joint ;
  • la matière thermoplastique du profilé comprend une polyoléfine telle qu'un polyéthylène à haute densité ou un polypropylène ;
  • le profilé est extrudé ;
  • la portion déformable du profilé forme au moins une rigole de collecte de liquides de ruissellement en surface des éléments de construction ;
  • la portion déformable du profilé possède une forme de soufflet concave ;
  • la portion déformable du profilé présente une épaisseur sensiblement plus faible que les portions d'appui, de préférence inférieure à 10 millimètres.
  • la portion déformable du profilé possède une forme de soufflet bi-convexe.
  • chaque portion d'appui du profilé monobloc présente au moins un évidement longitudinal.
According to preferred features of the invention:
  • each support portion of the profile has an upper face provided to extend in the continuity of a running surface of the construction elements;
  • this upper face of each bearing portion has a longitudinal groove, the seal further comprising rigid support bars, preferably metallic (in particular aluminum or stainless steel), placed in the grooves of the bearing portions, and fasteners for anchoring the bars and supporting portions to the building elements;
  • the holding bars may have oblong holes to receive the fasteners;
  • each support portion of the profile receives a retaining bar extending over substantially the entire length of the joint;
  • alternatively, each support portion of the profile receives several successive holding bars along the length of the joint;
  • the thermoplastic material of the profile comprises a polyolefin such as high density polyethylene or polypropylene;
  • the profile is extruded;
  • the deformable portion of the profile forms at least one collection channel for surface runoff liquids of the construction elements;
  • the deformable portion of the profile has a concave bellows shape;
  • the deformable portion of the profile has a substantially smaller thickness than the bearing portions, preferably less than 10 millimeters.
  • the deformable portion of the profile has a bi-convex bellows shape.
  • each bearing portion of the one-piece profile has at least one longitudinal recess.

D'autres particularités et avantages de la présente invention apparaîtront dans la description ci-après d'exemples de réalisation non limitatifs, en référence aux dessins annexés, dans lesquels :

  • la figure 1 est une coupe transversale d'un joint de chaussée selon l'invention ;
  • la figure 2 est une vue en perspective de ce joint ; et
  • les figures 3 à 5 sont des coupes transversales de variantes de réalisation du profilé monobloc du joint selon l'invention.
Other features and advantages of the present invention will become apparent in the following description of nonlimiting exemplary embodiments, with reference to the appended drawings, in which:
  • the figure 1 is a cross section of a road joint according to the invention;
  • the figure 2 is a perspective view of this joint; and
  • the Figures 3 to 5 are cross-sections of alternative embodiments of the monobloc profile of the seal according to the invention.

La figure 1 présente un mode de réalisation de l'invention. Elle montre un joint de chaussée 1 placé à cheval sur deux éléments de construction adjacents 5 consistant par exemple en des dalles en béton ou des segments de tablier de pont. Une chaussée 6 est aménagée sur la surface supérieure des éléments de construction 5. Les éléments 5 étant distincts, la chaussée 6 présenterait une discontinuité en l'absence du joint de chaussée 1. Le joint de chaussée 1 assure une continuité de la chaussée en reliant les éléments de construction 5.The figure 1 presents an embodiment of the invention. It shows a road joint 1 straddling two adjacent building elements 5 consisting for example of concrete slabs or bridge deck segments. A roadway 6 is arranged on the upper surface of the building elements 5. The elements 5 being distinct, the roadway 6 would have a discontinuity in the absence of the road joint 1. The road joint 1 ensures continuity of the roadway by connecting building elements 5.

Les bords des éléments 5 recevant le joint 1 sont susceptibles de subir des mouvements l'un par rapport à l'autre, notamment lorsque des véhicules circulent sur la chaussée 6 ou à cause des dilatations thermiques des éléments. Le joint de chaussée 1 absorbe les déformations éventuelles résultant de tels mouvements.The edges of the elements 5 receiving the seal 1 are likely to undergo movement relative to each other, especially when vehicles are traveling on the roadway 6 or because of thermal expansion of the elements. The road joint 1 absorbs any deformations resulting from such movements.

Le joint de chaussée représenté sur la figure 1 est essentiellement constitué d'un profilé monobloc 1 réalisé en une matière thermoplastique.The road joint shown on the figure 1 essentially consists of a single piece profile 1 made of a thermoplastic material.

Les matières thermoplastiques constituent une importante classe de matériaux synthétiques. Elles sont dérivées de polymères linéaires ou légèrement ramifiés. Une des caractéristiques des matières thermoplastiques est qu'elles ramollissent sous l'action de la chaleur et se solidifient par refroidissement en prenant une nouvelle forme, ce qui permet un soudage aisé par chauffage local.Thermoplastics are an important class of synthetic materials. They are derived from linear or slightly branched polymers. One of the characteristics of thermoplastics is that they soften under the action of heat and solidify by cooling in a new shape, which allows easy welding by local heating.

Les matières thermoplastiques ont également, de façon générale, des propriétés ,qui les rendent particulièrement aptes à répondre aux exigences demandées à un joint de chaussée, telles que décrites précédemment. En particulier, elles possèdent une élasticité suffisante pour permettre une déformation importante, ainsi qu'une étanchéité vis-à-vis des liquides, et une bonne résistance mécanique pour supporter des charges de fonctionnement comme le support du poids de véhicules et les effets dynamiques que leurs mouvements engendrent.Thermoplastics also have, in general, properties, which make them particularly suitable for meeting the requirements of a road joint, as described above. In particular, they have sufficient elasticity to allow significant deformation, as well as a seal against liquids, and good mechanical strength to withstand operating loads such as vehicle weight support and dynamic effects that their movements engender.

Un joint de chaussée ainsi disposé sur des éléments de construction, permet le support des charges de fonctionnement imposées à la chaussée 6 par des véhicules qui passent ou stationnent sur le joint, et absorbe sans grand risque de rupture des mouvements des éléments 5 l'un par rapport à l'autre.A road joint thus disposed on construction elements, allows the support of the operating loads imposed on the roadway 6 by vehicles that pass or stay on the joint, and absorbs without great risk of rupture of the movements of the elements 5 one compared to each other.

Dans une réalisation avantageuse, la matière thermoplastique utilisée pour le profilé 1 du joint de chaussée est une polyoléfine. Les polyoléfines sont constituées des polymères et copolymères de l'éthylène, du propylène et des hydrocarbures éthyléniques plus lourds. Elles possèdent en outre une grande partie des caractéristiques demandées pour un joint de chaussée. Le profilé 1 peut ainsi être en polyéthylène à haute densité (PEHD) ou encore en polypropylène (PP). Il peut également être réalisé dans toute autre matière thermoplastique, ou une combinaison de matières de type polyoléfine.In an advantageous embodiment, the thermoplastic material used for the profile 1 of the road joint is a polyolefin. The polyolefins consist of polymers and copolymers of ethylene, propylene and heavier ethylenic hydrocarbons. In addition, they possess many of the characteristics required for a road joint. The profile 1 can be made of high density polyethylene (HDPE) or polypropylene (PP). It can also be made of any other thermoplastic material, or a combination of polyolefin materials.

Le profilé thermoplastique peut être extrudé selon une méthode classique. On peut produire ce profilé de manière que sa longueur couvre la totalité de la largeur d'une chaussée (de l'ordre de 7 mètres pour une chaussée comprenant deux voies de circulation).The thermoplastic profile can be extruded according to a conventional method. This profile can be produced so that its length covers the entire width of a roadway (of the order of 7 meters for a roadway comprising two traffic lanes).

On peut également produire un profilé avec une longueur inférieure à la largeur de la chaussée. Dans ce cas, on effectuera un raboutage de plusieurs profilés à la suite dans le sens longitudinal de manière à couvrir la totalité de la largeur de la chaussée. Ces profilés seront fixés entre eux par collage ou de préférence par soudage. Il est à noter que les caractéristiques des matières thermoplastiques telles que le PEHD donnent la possibilité d'effectuer un soudage aisé entre deux profilés dans cette même matière, en chauffant leurs extrémités avant de les mettre bout à bout. La production d'un, profilé avec une longueur inférieure à la largeur de la chaussée présente l'avantage d'avoir un profilé de longueur limitée, plus facile à transporter et également utilisable pour des chaussées de différentes largeurs.It is also possible to produce a profile with a length less than the width of the roadway. In this case, we will make a splicing of several profiles later in the longitudinal direction so as to cover the entire width of the roadway. These profiles will be fixed together by gluing or preferably by welding. It should be noted that the characteristics of thermoplastic materials such as HDPE give the possibility of easy welding between two profiles in the same material, heating their ends before putting them end to end. The production of a profile with a length less than the width of the road has the advantage of having a profile of limited length, easier to transport and also usable for pavements of different widths.

Le profilé monobloc 1 comporte deux portions d'appui 2. Ces portions d'appui reposent directement sur les éléments de construction 5 et sont en contact sur leurs côtés avec la chaussée 6 comme représenté sur la figure 1. Ces portions d'appui 2, dont la face supérieure 8 s'étend dans la continuité de la surface de roulement de la chaussée 6, subissent les charges reçues par cette chaussée. La matière thermoplastique leur confère une résistance vis-à-vis de ces charges, telles que le poids de véhicules qui circulent sur la chaussée ou les efforts dynamiques que ces véhicules engendrent.The one-piece profile 1 comprises two bearing portions 2. These bearing portions rest directly on the construction elements 5 and are in contact on their sides with the roadway 6 as shown in FIG. figure 1 . These bearing portions 2, whose upper face 8 extends in the continuity of the running surface of the roadway 6, are subjected to the loads received by this roadway. The thermoplastic material gives them resistance to these loads, such as the weight of vehicles traveling on the road or the dynamic forces that these vehicles generate.

De façon optionnelle, les portions d'appui 2 comportent des évidements longitudinaux 12, 13 tels que ceux représentés sur les figures 3 et 4. Ces évidements permettent de limiter la quantité de matière thermoplastique du joint et donc leur coût. Ils permettent également de diminuer les temps de refroidissement de la matière thermoplastique après extrusion du profilé.Optionally, the support portions 2 comprise longitudinal recesses 12, 13 such as those shown in the drawings. Figures 3 and 4 . These recesses allow to limit the amount of thermoplastic material of the seal and therefore their cost. They also reduce the cooling times of the thermoplastic material after extrusion of the profile.

La figure 1 montre également une portion plus fine 3 du profilé 1 du joint de chaussée. Celle-ci fait la jonction entre les deux portions d'appui 2. Du fait de sa forme amincie, et de la matière thermoplastique qui la compose, cette portion plus fine 3 présente une bonne déformabilité lorsque des mouvements relatifs se produisent entre les éléments 5. Les propriétés d'élasticité des matières thermoplastiques précitées autorisent également que cette déformation. Dans une réalisation typique de l'invention, la portion fine 3 du joint de chaussée 1 a une épaisseur inférieure à 10 mm.The figure 1 also shows a thinner portion 3 of the profile 1 of the road joint. This makes the junction between the two support portions 2. Due to its thinned shape, and the thermoplastic material that composes it, this thinner portion 3 has good deformability when relative movements occur between the elements 5 The elasticity properties of the aforementioned thermoplastic materials also allow this deformation. In a typical embodiment of the invention, the thin portion 3 of the roadway joint 1 has a thickness of less than 10 mm.

Plusieurs formes sont envisageables pour la portion fine 3. Sur la figure 1, la portion fine 3 est en forme de soufflet concave. Cette configuration est avantageuse dans la mesure où la portion fine 3 est en retrait par rapport à la chaussée 6 ce qui lui évite d'être trop directement en contact avec des véhicules circulant sur la chaussée, et donc, de subir une abrasion trop importante. Par ailleurs, une telle structure concave forme une rigole permettant de collecter du liquide se répandant sur la chaussée 6 comme par exemple des eaux de ruissellement pouvant entraîner avec elles des huiles ou sels de dégivrage, auxquels la matière thermoplastique est également résistante. Cette rigole évacue les eaux vers l'accotement de la chaussée.Several forms are conceivable for the fine portion 3. On the figure 1 the thin portion 3 is in the form of a concave bellows. This configuration is advantageous in that the thin portion 3 is set back from the roadway 6 which prevents it from being too directly in contact with vehicles on the road, and therefore, to undergo too much abrasion. Furthermore, such a concave structure forms a channel for collecting liquid spreading on the roadway 6 such as runoff water may cause with them oils or deicing salts, which the thermoplastic material is also resistant. This channel discharges the water towards the shoulder of the roadway.

Dans la réalisation illustrée par la figure 5, la portion fine 3 est en forme de soufflet bi-convexe, ce qui améliore sa robustesse et permet de former une double barrière d'étanchéité.In the realization illustrated by the figure 5 , the thin portion 3 is in the form of a bi-convex bellow, which improves its robustness and makes it possible to form a double sealing barrier.

Le profilé thermoplastique 1 représenté sur les dessins comporte en outre des gorges longitudinales 7 formées sur la face supérieure 8 de chacune des deux portions d'appui 2. Ces gorges peuvent s'étendre sur toute la longueur du profilé 1. De façon avantageuse, elles sont obtenues par la forme de la filière d'extrusion du profilé 1. Les gorges 7 sont destinées à recevoir des barrettes de maintien 4 qui s'y emboîtent sur toute leur longueur.The thermoplastic profile 1 shown in the drawings further comprises longitudinal grooves 7 formed on the upper face 8 of each of the two bearing portions 2. These grooves can extend over the entire length of the profile 1. Advantageously, they are obtained by the shape of the extrusion die of the profile 1. The grooves 7 are intended to receive holding bars 4 which fit together over their entire length.

La figure 2 donne une représentation schématique en perspective du joint de chaussée de la figure 1. On voit sur cette figure que les barrettes de maintien 4 ont été posées dans les gorges 7 sur chacune des portions d'appui 2 du profilé thermoplastique 1. Leur profil extérieur est adapté à la forme des gorges 7. Ces barrettes de maintien 4 sont alignées avec le profilé, et leur face supérieure affleure la face supérieure 8 des portions d'appui 2, c'est-à-dire la surface de roulement de la chaussée 6. Les barrettes de maintien 4 sont de préférence métalliques, notamment en aluminium ou en acier inoxydable. Elles peuvent s'étendre d'une seule pièce sur toute la longueur du joint. On peut aussi disposer plusieurs barrettes successives sur la longueur du joint.The figure 2 gives a schematic representation in perspective of the road joint of the figure 1 . It can be seen in this figure that the holding bars 4 have been placed in the grooves 7 on each of the bearing portions 2 of the thermoplastic profile 1. Their outer profile is adapted to the shape of the grooves 7. These holding bars 4 are aligned. with the profile, and their upper face is flush with the upper face 8 of the bearing portions 2, that is to say the running surface of the roadway 6. The support bars 4 are preferably made of metal, in particular aluminum or Stainless steel. They can extend in one piece over the entire length of the joint. It is also possible to have several successive bars along the length of the joint.

Les barrettes 4 ont pour rôle de maintenir le profilé thermoplastique au contact des éléments 5 supportant la chaussée 6. Elles présentent des perçages 9 répartis sur leur longueur, à travers lesquels on fait passer des organes de fixation tels que des vis 10. Celles-ci traversent la barrette 4 et la portion d'appui 2 du profilé pour les ancrer sur l'élément de construction sous-jacent. Comme représenté sur la figure 2 ces perçages 9 sont avantageusement oblongs, ce qui donne une certaine latitude sur la position des organes de fixation 10 le long du profilé, dans le cas où on buterait contre des fers d'armature du béton lorsqu'on perce l'élément 5 pour mettre en place les chevilles d'ancrage. Les barrettes de maintien 4 évitent que les portions d'appui 2 du profilé aient tendance à onduler entre les vis de fixation 10.The bars 4 serve to maintain the thermoplastic profile in contact with the elements 5 supporting the roadway 6. They have holes 9 distributed along their length, through which are passed fasteners such as screws 10. These pass through the bar 4 and the support portion 2 of the profile to anchor them on the underlying building element. As shown on the figure 2 these bores 9 are advantageously oblong, which gives a certain latitude on the position of the fasteners 10 along the profile, in the case where one would abut against rebars concrete when pierce the element 5 to put in place the anchor pins. The support bars 4 prevent the support portions 2 of the profile from tending to wobble between the fixing screws 10.

La structure du joint de chaussée ainsi que les matériaux utilisés pour le profilé 1 et pour les barrettes de fixation 4, donnent la possibilité de serrer fermement le profilé 1 entre les barrettes de fixation 4 et les éléments 5, à l'aide de fixations classiques, qui peuvent être pré-contraintes pour ne pas subir de desserrement sous l'effet de vibrations. Pour compenser la déformation par fluage de la matière thermoplastique du profilé 1 sous l'effet de la pré-contrainte, un mécanisme classique de type ressort ou rondelle Belleville peut être employé.The structure of the road joint as well as the materials used for the profile 1 and for the fastening bars 4, make it possible to firmly tighten the profile 1 between the fastening bars 4 and the elements 5, using conventional fasteners. , which can be pre-stressed to avoid loosening under the effect of vibrations. To compensate for the creep deformation of the thermoplastic material of the section 1 under the effect of the pre-stress, a conventional Belleville type spring mechanism or washer can be used.

Les barrettes de maintien 4 et leur mécanisme de fixation, à travers le profilé thermoplastique, dans les éléments d'ouvrage d'art 5, permettent aussi d'éviter une déformation de la matière thermoplastique du profilé 1, qui pourrait autrement apparaître en cas de dilatation par exemple.The holding bars 4 and their fixing mechanism, through the thermoplastic profile, in the structural elements 5, also make it possible to avoid a deformation of the thermoplastic material of the profile 1, which could otherwise appear in the case of dilation for example.

Claims (13)

  1. A construction joint for insertion between two adjacent construction elements (5),
    comprising an integral profiled section (1) made of thermoplastic and having two portions (2) bearing on the two construction elements, respectively, which are designed to withstand external loads exerted occasionally on the construction elements, and a deformable portion (3) extending between the two bearing portions to allow a relative movement of the two construction elements with respect to one another, each bearing portion (2) of the profiled section (1) having an upper side (8) provided to extend into the continuity of a road surface of the construction elements (5),
    characterized in that the upper side (8) of each bearing portion (2) has a longitudinal groove (7), the joint additionally comprising rigid retaining bars (4) placed into the grooves in the bearing portions, and fixing means (10) for anchoring the bars and the bearing portions to the construction elements (5).
  2. The joint as claimed in claim 1, in which the retaining bars (4) have oblong holes (9) for receiving the fixing means (10).
  3. The joint as claimed in claim 1 or 2, in which the retaining bars (4) are made of metal, in particular aluminum or stainless steel.
  4. The joint as claimed in any one of claims 1 to 3, in which each bearing portion (2) of the profiled section (1) receives a retaining bar (4) extending substantially over the total length of the joint.
  5. The joint as claimed in any one of claims 1 to 3, in which each bearing portion (2) of the profiled section (1) receives a number of successive retaining bars (4) over the length of the joint.
  6. The joint as claimed in any one of the preceding claims, in which the thermoplastic of the profiled section (1) comprises a polyolefin such as a high-density polyethylene or a polypropylene.
  7. The joint as claimed in any one of the preceding claims, in which said profiled section (1) is extruded.
  8. The joint as claimed in any one of the preceding claims, in which the deformable portion (3) of the profiled section (1) forms at least one liquid runoff-collecting channel at the surface of the construction elements (5).
  9. The joint as claimed in claim 8, in which the deformable portion (3) of the profiled section (1) has the shape of a concave bellows.
  10. The joint as claimed in any one of the preceding claims, in which the deformable portion (3) of the profiled section (1) has a thickness which is substantially less than that of the bearing portions.
  11. The joint as claimed in claim 10, in which the deformable portion of the profiled section has a thickness of less than 10 millimeters.
  12. The joint as claimed in claim 8, in which the deformable portion (3) of the profiled section (1) has the shape of a bi-convex bellows.
  13. The joint as claimed in any one of the preceding claims, in which each bearing portion (2) of the integral profiled section has at least one longitudinal cavity (12, 13).
EP03727607A 2002-04-12 2003-03-21 Construction joint Expired - Lifetime EP1495189B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
FR0204639A FR2838465B1 (en) 2002-04-12 2002-04-12 CONSTRUCTION JOINT
FR0204639 2002-04-12
PCT/FR2003/000910 WO2003087479A1 (en) 2002-04-12 2003-03-21 Construction joint

Publications (2)

Publication Number Publication Date
EP1495189A1 EP1495189A1 (en) 2005-01-12
EP1495189B1 true EP1495189B1 (en) 2009-06-24

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EP03727607A Expired - Lifetime EP1495189B1 (en) 2002-04-12 2003-03-21 Construction joint

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EP (1) EP1495189B1 (en)
JP (1) JP4121965B2 (en)
KR (1) KR100962703B1 (en)
AT (1) ATE434686T1 (en)
AU (1) AU2003233847B2 (en)
DE (1) DE60328091D1 (en)
DK (1) DK1495189T5 (en)
ES (1) ES2328918T3 (en)
FR (1) FR2838465B1 (en)
PT (1) PT1495189E (en)
WO (1) WO2003087479A1 (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20050066600A1 (en) * 2003-09-25 2005-03-31 Paul Moulton Expansion joint system
JP7425451B2 (en) 2020-09-25 2024-01-31 国立大学法人東北大学 Alloy for permanent magnet and its manufacturing method, and permanent magnet and its manufacturing method

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3508010C3 (en) * 1985-03-06 1993-11-18 Maurer Friedrich Soehne Arrangement for bridging an expansion joint in a carriageway
CA2015289C (en) * 1990-04-24 1995-02-14 Konrad Baerveldt Extruded thermoplastic elastomer expansion joint
CA2091948C (en) * 1993-03-18 1996-04-09 Konrad Baerveldt Joint seal retaining element

Also Published As

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JP2005522604A (en) 2005-07-28
ES2328918T3 (en) 2009-11-19
DK1495189T5 (en) 2014-02-03
ATE434686T1 (en) 2009-07-15
AU2003233847A1 (en) 2003-10-27
AU2003233847B2 (en) 2008-10-30
DK1495189T3 (en) 2009-11-02
FR2838465B1 (en) 2004-10-01
PT1495189E (en) 2009-09-23
DE60328091D1 (en) 2009-08-06
KR20040101989A (en) 2004-12-03
FR2838465A1 (en) 2003-10-17
JP4121965B2 (en) 2008-07-23
WO2003087479A1 (en) 2003-10-23
KR100962703B1 (en) 2010-06-11
EP1495189A1 (en) 2005-01-12

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