EP3358077A1 - Coated sleeper and method for producing said coated sleeper - Google Patents

Coated sleeper and method for producing said coated sleeper Download PDF

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Publication number
EP3358077A1
EP3358077A1 EP18153937.0A EP18153937A EP3358077A1 EP 3358077 A1 EP3358077 A1 EP 3358077A1 EP 18153937 A EP18153937 A EP 18153937A EP 3358077 A1 EP3358077 A1 EP 3358077A1
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EP
European Patent Office
Prior art keywords
bowl
coated
bottom wall
cross member
side edges
Prior art date
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Application number
EP18153937.0A
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German (de)
French (fr)
Inventor
Stefano Lucarini
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Margaritelli Ferroviaria SpA
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Margaritelli Ferroviaria SpA
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Publication date
Application filed by Margaritelli Ferroviaria SpA filed Critical Margaritelli Ferroviaria SpA
Publication of EP3358077A1 publication Critical patent/EP3358077A1/en
Withdrawn legal-status Critical Current

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    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01B—PERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
    • E01B3/00—Transverse or longitudinal sleepers; Other means resting directly on the ballastway for supporting rails
    • E01B3/46—Transverse or longitudinal sleepers; Other means resting directly on the ballastway for supporting rails made from different materials
    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01B—PERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
    • E01B1/00—Ballastway; Other means for supporting the sleepers or the track; Drainage of the ballastway
    • E01B1/002—Ballastless track, e.g. concrete slab trackway, or with asphalt layers
    • E01B1/005—Ballastless track, e.g. concrete slab trackway, or with asphalt layers with sleeper shoes

Definitions

  • the present patent application for industrial invention relates to a concrete sleeper, intended to be partially embedded in a concrete slab, on which are laid the railroad rails.
  • a concrete sleeper intended to be partially embedded in a concrete slab, on which are laid the railroad rails.
  • said concrete sleepers are conventionally coated with layers of plastic material in order to absorb and stifle the vibrations and noise caused by the passage of convoys.
  • Figures 1 and 2 describe the execution of two variants of a conventionally coated crossmember indicated by reference numerals 101 and 101a.
  • Figures 1 and 2 are cross sections of said cross-lapped conventional technique in a vertical plane, orthogonal to the longitudinal axis of said cross.
  • the coated transom (101) of the Fig. 1 comprises a rail (102) made of concrete and introduced inside a trough (103).
  • the bowl (103) is made of rigid plastic and is embedded in the concrete slab (104).
  • the bowl (103) has a parallelepipedal shape and comprises an upper opening delimited by edges arranged flush with the slab (104).
  • the cross member (102) overflows above said edges of the upper opening of the bowl (103).
  • the bowl (103) comprises a cushion cushion (131) positioned between the bottom wall of the bowl (103) and the bottom wall of the cross member (102).
  • This pad (131) has the function of stifling the vibrations and noises caused by the passage of a railway train above the crossbar (102). Indeed, thanks to the deformable characteristic of the pad (131), the cross member (102) can perform vertical movements inside the bowl (103) so as to reduce noise and vibration.
  • Said coated crossbar (101) has the disadvantage that in the long run the gap (A) between the lateral walls of the crossmember (102) and the side edges of the bowl (103) fills with dust and debris, preventing the up-and-down movement of the cross member (102) and thus the damping action of the rubber layer of the bowl (103).
  • an improved coated transom (101a) has already been proposed and available on the market, as illustrated in FIG. Fig. 2 and characterized in that the relative bowl (103) is provided with rubber perimeter seals (132) arranged to cover the upper perimeter mouth of the gap (A). These seals (132), although ensuring the sealing of the mouth of said gap (A), do not prevent the upward and downward strokes of the cross member (102), since said seals sealing are in turn elastically deformable.
  • the object of the invention is therefore to overcome the disadvantages of the conventional technique by providing a coated rail rail crossbar for effective damping of vibration and noise caused by the passage of a train on said cross.
  • Another goal is to achieve a coated cross which is economical to achieve and easy and quick to implement and replace on the line.
  • a further aim is to invent a method for producing the coated crossmember according to the invention.
  • a coated rail rail cross member according to the invention comprises a concrete cross-member and a trough anchored thereto which functions as a cladding for said cross-member.
  • the specificity of the coated transom of the invention consists in that the bowl is made of deformable elastomeric material, so as to deform and stifle the noise and vibrations produced by the passage of the trains on the coated transom.
  • the coated crossmember (1) comprises a cross member (2) monobloc for parallelepiped rail rails and a bowl (3), which functions as a coating of said crossbeam (2).
  • the cross member (2) is pre-stressed reinforced concrete and is made by casting the prestressed concrete inside the bowl (3).
  • the bowl (3) is intended to be enclosed within a concrete slab (4), so that the upper part of the crossbar (2) protrudes from the upper surface of the slab (4).
  • the bowl (3) comprises four lateral edges (30) and a horizontal bottom wall (31).
  • the bowl (3) has an upper opening, delimited by the upper edges of the lateral edges (31).
  • the upper surface of the crosspiece (2) projects higher than the upper edges of the side edges (31) of the bowl (3).
  • the side edges (30) and the bottom wall (31) of the bowl (3) have a smooth outer surface and an inner surface with a plurality of protuberances (32) forcing toward the hollow portion of said bowl (3). ).
  • the protuberances (32) are embedded in the prestressed reinforced concrete mass of the cross member (2).
  • said protuberances (32) may consist of a series of tufted mushroom-shaped piles or a reticle of ribs.
  • the protuberances (32) have the function of anchoring the bowl (3) to the crossbar (2). It is obvious in fact that the moment when inside said bowl (3) is poured the prestressed concrete for the realization of the crossbar (2), the cement paste infiltrates and consolidates in the interstices between said protuberances (32), thereby producing a multitude of connection points to be recessed between the walls of the bowl (3) and the cross member (2).
  • the side edges (30) and the bottom wall (31) of the bowl (3) are deformable elastomeric material, so as to squelch the noise and vibrations caused by the passage of trains on the coated rail (1).
  • the bottom wall (31) of the bowl (3) is elastically deformed by crushing, bringing the major and the most important contribution to the action of quenching and lessening of the vibrations, with consequent reduction of the noise produced by the passage of the railway train above the coated rail (1).
  • the side edges (30) also being made of elastomer, are able to deform so as not to prevent the alternating upward-downward strokes of the cross member (2) by the effect of vibrations transmitted to it during the passage of the convoy.
  • the elastomer used for the realization of the side edges (30) is able to deform elastically, so as to consent to the cross member (2) a vertical movement.
  • the lateral edges (30) and the bottom wall (31) of the bowl (3) are made by molding, using a deformable elastomeric material.
  • the reinforcing bars of the crossbar (2) are arranged inside the bowl (3), which in turn is positioned inside a mold or a formwork, of the conventional type, having a footprint according to the crossbar (2) and adapted to receive the cast of prestressed concrete for the formation of the cross (2).
  • the walls of the crossbar (2) are therefore in contact with both the internal surfaces of the lateral edges (30) and of the bottom wall (31) of the bowl (3).
  • Prestressed concrete is poured into the mold.
  • the coated crossbar (1) is removed from said mold.
  • the bowl (3) could be made in a monolithic version or by assembling its lateral edges (30) and its bottom wall (31), formed separately from each other by molding. If a monolithic bowl is used, it is arranged in the cavity of said mold, whereas if a bowl (3) with adjustable walls is used, then the side walls of said cavity are coated by the side edges (30) of the bowl (3), while the bottom wall of said cavity is coated by the bottom wall (31) of the bowl (3).
  • the implementation of the coated crossmember (1) in the concrete slab (4) requires only one operation, that is to say that of drowning the coated crossmember (1) in the casting of the slab (4). ); vice versa, contrary to what is true by adopting the sleepers coated with the prior art, illustrated in the Fig. 2 it is not necessary to carry out finishing and / or sealing operations after embedding the coated crossmember (1) in the slab (4).
  • coated crossmember (1) of the invention it is also necessary to point out a further advantage presented by the coated crossmember (1) of the invention as regards the simplicity and the speed of the operations necessary for its replacement. Indeed, the extraction of the coated crossmember (1) of the slab (4) in which it is embedded can be done easily thanks to the outer surface, perfectly smooth, side edges (30), which can therefore freely slide from bottom to top relative to the slab (4) which houses said coated crossmember (1).
  • the extraction phase of the coated cross member (1) of the slab (4) is effected by a single operation of lifting the crossbar (2), with the relative holding bowl (3) which is anchored there.
  • the replacement of a conventional type of coated transom comprises two successive interventions, the first one for extracting and lifting the concrete cross member (102) from the bowl (103), then removing the bowl (103) from the slab (104).

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Railway Tracks (AREA)

Abstract

Une traverse revêtue (1) comprend une traverse (2) monobloc en béton armé précontraint pour rails ferroviaires et une cuvette (3), qui fonctionne en tant que revêtement pour dite traverse (2) ; la caractéristique de dite traverse revêtue (1) consiste en ce que les bords latéraux (30) et la paroi de fond (31) de la cuvette (3) sont en matériel élastomère déformable.A coated crossmember (1) comprises a pre-stressed reinforced concrete cross-member (2) for railway rails and a trough (3) which functions as a covering for said crossmember (2); the characteristic of said coated crossmember (1) consists in that the side edges (30) and the bottom wall (31) of the bowl (3) are of deformable elastomeric material.

Description

La présente demande de brevet pour invention industrielle concerne une traverse revêtue, en béton, destinée à être partiellement noyée dans une dalle en béton, sur laquelle sont posés les rails de chemin de fer. À ce sujet, on rappelle que récemment, surtout pour la réalisation des rails pour les trains métropolitains, la technique de poser les traverses des rails non plus sur le traditionnel lit de pierres, l'ainsi-dit ballast, mais sur une piste coulée en béton est de plus en plus diffuse.The present patent application for industrial invention relates to a concrete sleeper, intended to be partially embedded in a concrete slab, on which are laid the railroad rails. In this regard, it is recalled that recently, especially for the realization of rails for metropolitan trains, the technique of laying rail sleepers no longer on the traditional bed of stones, the so-called ballast, but on a run-in track. concrete is more and more diffuse.

Afin de mieux comprendre les caractéristiques innovantes de la traverse de l'invention et ses avantages, on décrit plus bas, sommairement, l'état de l'art avec référence aux traverses ferroviaires à poser sur des dalles en béton.To better understand the innovative features of the cross of the invention and its advantages, it is described below, summarily, the state of the art with reference to railway sleepers to be placed on concrete slabs.

Il faut par ailleurs préciser que dites traverses en béton sont conventionnellement revêtues avec des couches de matériel plastique afin d'absorber et étouffer les vibrations et le bruit causés par le passage des convois.It should also be noted that said concrete sleepers are conventionally coated with layers of plastic material in order to absorb and stifle the vibrations and noise caused by the passage of convoys.

Les Figures 1 et 2 décrivent l'exécution de deux variantes d'une traverse revêtue selon la technique conventionnelle, indiquées par les numéros de référence 101 et 101a. Notamment, les Figures 1 et 2 sont des coupes de dite traverse revêtue de la technique conventionnelle selon un plan vertical, orthogonal à l'axe longitudinal de ladite traverse.The Figures 1 and 2 describe the execution of two variants of a conventionally coated crossmember indicated by reference numerals 101 and 101a. In particular, Figures 1 and 2 are cross sections of said cross-lapped conventional technique in a vertical plane, orthogonal to the longitudinal axis of said cross.

La traverse revêtue (101) de la Fig. 1 comprend une traverse (102) ferroviaire, réalisée en béton et introduite à l'intérieur d'une cuvette (103) de revêtement. La cuvette (103) est en plastique rigide et elle est englobée dans la dalle (104) en béton. La cuvette (103) a une forme parallélépipède et comprend une ouverture supérieure délimitée par des bords disposés à ras de la dalle (104). La traverse (102) déborde supérieurement des dits bords de l'ouverture supérieure de la cuvette (103).The coated transom (101) of the Fig. 1 comprises a rail (102) made of concrete and introduced inside a trough (103). The bowl (103) is made of rigid plastic and is embedded in the concrete slab (104). The bowl (103) has a parallelepipedal shape and comprises an upper opening delimited by edges arranged flush with the slab (104). The cross member (102) overflows above said edges of the upper opening of the bowl (103).

La cuvette (103) comprend un coussinet amorti (131), positionné entre la paroi inférieure de la cuvette (103) et la paroi inférieure de la traverse (102). Ce coussinet (131) a la fonction d'étouffer les vibrations et les bruits causés par le passage d'un convoi ferroviaire au-dessus de la traverse (102). En effet, grâce à la caractéristique déformable du coussinet (131), la traverse (102) peut accomplir des déplacements verticaux à l'intérieur de la cuvette (103) de manière à atténuer les bruits et les vibrations.The bowl (103) comprises a cushion cushion (131) positioned between the bottom wall of the bowl (103) and the bottom wall of the cross member (102). This pad (131) has the function of stifling the vibrations and noises caused by the passage of a railway train above the crossbar (102). Indeed, thanks to the deformable characteristic of the pad (131), the cross member (102) can perform vertical movements inside the bowl (103) so as to reduce noise and vibration.

Dite traverse revêtue (101) présente un inconvénient du fait qu'à long terme l'interstice (A), entre les parois latérales de la traverse (102) et les bords latéraux de la cuvette (103), se remplit de poussière et de débris, en empêchant le déplacement vers le haut-le bas de la traverse (102) et donc l'action d'amortissement de la couche en caoutchouc de la cuvette (103).Said coated crossbar (101) has the disadvantage that in the long run the gap (A) between the lateral walls of the crossmember (102) and the side edges of the bowl (103) fills with dust and debris, preventing the up-and-down movement of the cross member (102) and thus the damping action of the rubber layer of the bowl (103).

Pour pallier à cet inconvénient, une traverse revêtue perfectionnée (101a) a déjà été proposée et disponible sur le marché, comme celle illustrée dans la Fig. 2 et elle est caractérisée en ce que la relative cuvette (103) est munie de joints d'étanchéité (132) de périmètre en caoutchouc, disposés pour couvrir l'embouchure de périmètre supérieure de l'interstice (A). Ces joints d'étanchéité (132), bien que garantissant le scellement de l'embouchure du dit interstice (A), n'empêchent pas les courses vers le haut-le bas de la traverse (102), du fait que lesdits joints d'étanchéité sont à leur tour déformables élastiquement.To overcome this drawback, an improved coated transom (101a) has already been proposed and available on the market, as illustrated in FIG. Fig. 2 and characterized in that the relative bowl (103) is provided with rubber perimeter seals (132) arranged to cover the upper perimeter mouth of the gap (A). These seals (132), although ensuring the sealing of the mouth of said gap (A), do not prevent the upward and downward strokes of the cross member (102), since said seals sealing are in turn elastically deformable.

Il est de toute façon évident que l'introduction des dits joints d'étanchéité comporte des complications et des frais majorés de réalisation de la traverse revêtue (101a) de la Fig. 2 par rapport à la traverse revêtue (101) de la Fig. 1.It is in any case obvious that the introduction of said seals has complications and increased costs of producing the coated cross member (101a) of the Fig. 2 relative to the coated crossmember (101) of the Fig. 1 .

Le but de l'invention est donc de pallier aux inconvénients de la technique conventionnelle en fournissant une traverse revêtue pour rails ferroviaires permettant un amortissement efficace des vibrations et du bruit causés par le passage d'un train sur ladite traverse.The object of the invention is therefore to overcome the disadvantages of the conventional technique by providing a coated rail rail crossbar for effective damping of vibration and noise caused by the passage of a train on said cross.

Un autre but est celui de réaliser une traverse revêtue qui soit économique à réaliser et facile et rapide à mettre en oeuvre et à remplacer sur la ligne.Another goal is to achieve a coated cross which is economical to achieve and easy and quick to implement and replace on the line.

Un but ultérieur est celui d'inventer une méthode pour la réalisation de la traverse revêtue selon l'invention.A further aim is to invent a method for producing the coated crossmember according to the invention.

Une traverse revêtue pour rails ferroviaires selon l'invention comprend une traverse en béton et une cuvette qui y est ancrée, qui fonctionne en tant que revêtement pour dite traverse.A coated rail rail cross member according to the invention comprises a concrete cross-member and a trough anchored thereto which functions as a cladding for said cross-member.

La spécificité de la traverse revêtue de l'invention consiste en ce que la cuvette est réalisée en matériel élastomère déformable, de manière à se déformer et étouffer les bruits et les vibrations produites par le passage des trains sur la traverse revêtue.The specificity of the coated transom of the invention consists in that the bowl is made of deformable elastomeric material, so as to deform and stifle the noise and vibrations produced by the passage of the trains on the coated transom.

La description de la traverse revêtue de l'invention, pour une explication plus claire, fait référence aux dessins joints, reportés à titre d'exemple non limitatif, où :

  • les Figures 1 et 2 sont des coupes de deux variantes de la traverse revêtue de la technique conventionnelle, selon un plan vertical orthogonal à l'axe longitudinal de dite traverse ;
  • la Fig. 3 est une vue axonométrique de la traverse revêtue de l'invention ;
  • la Fig. 4 est une coupe de la traverse revêtue de la Fig. 3 selon un plan vertical orthogonal à l'axe longitudinal de la traverse.
The description of the coated transom of the invention, for a clearer explanation, refers to the accompanying drawings, reported by way of non-limiting example, where:
  • the Figures 1 and 2 are cross-sections of two variants of the conventional coated crossmember, in a vertical plane orthogonal to the longitudinal axis of said cross;
  • the Fig. 3 is an axonometric view of the coated transom of the invention;
  • the Fig. 4 is a section of the transom coated with the Fig. 3 in a vertical plane orthogonal to the longitudinal axis of the transom.

Référence les Figures 3 et 4, on décrit une traverse revêtue de l'invention, indiquée globalement sous le numéro de référence (1).Reference them Figures 3 and 4 a coated cross-member of the invention, generally indicated under reference numeral (1), is described.

La traverse revêtue (1) comprend une traverse (2) monobloc pour rails ferroviaires de forme parallélépipède et une cuvette (3), qui fonctionne en tant que revêtement de dite traverse (2). Notamment, la traverse (2) est en béton armé précontraint et on la réalise en coulant le béton précontraint à l'intérieur de la cuvette (3). La cuvette (3) est destinée à être englobée à l'intérieur d'une dalle (4) en béton, de manière que la partie supérieure de la traverse (2) déborde par rapport à la surface supérieure de la dalle (4).The coated crossmember (1) comprises a cross member (2) monobloc for parallelepiped rail rails and a bowl (3), which functions as a coating of said crossbeam (2). In particular, the cross member (2) is pre-stressed reinforced concrete and is made by casting the prestressed concrete inside the bowl (3). The bowl (3) is intended to be enclosed within a concrete slab (4), so that the upper part of the crossbar (2) protrudes from the upper surface of the slab (4).

La cuvette (3) comprend quatre bords latéraux (30) et une paroi de fond (31) horizontale. La cuvette (3) a une ouverture supérieure, délimitée par les rebords supérieurs des bords latéraux (31). La surface supérieure de la traverse (2) déborde supérieurement par rapport aux rebords supérieurs des bords latéraux (31) de la cuvette (3).The bowl (3) comprises four lateral edges (30) and a horizontal bottom wall (31). The bowl (3) has an upper opening, delimited by the upper edges of the lateral edges (31). The upper surface of the crosspiece (2) projects higher than the upper edges of the side edges (31) of the bowl (3).

Les bords latéraux (30) et la paroi de fond (31) de la cuvette (3) présentent une surface externe lisse et une surface interne munie d'une pluralité de protubérances (32) qui forjettent vers la partie creuse de ladite cuvette (3). Les protubérances (32) sont encastrées dans la masse de béton armé précontraint de la traverse (2).The side edges (30) and the bottom wall (31) of the bowl (3) have a smooth outer surface and an inner surface with a plurality of protuberances (32) forcing toward the hollow portion of said bowl (3). ). The protuberances (32) are embedded in the prestressed reinforced concrete mass of the cross member (2).

Avantageusement, lesdites protubérances (32) peuvent consister en une série touffue de pieux en forme de champignon ou un réticule de nervures. Les protubérances (32) ont la fonction d'ancrer la cuvette (3) à la traverse (2). C'est évident en effet que du moment où à l'intérieur de ladite cuvette (3) on coule le béton précontraint pour la réalisation de la traverse (2), la pâte de ciment s'infiltre et se consolide dans les interstices présents entre lesdites protubérances (32), en réalisant ainsi une multitude de points de connexion à encastrement entre les parois de la cuvette (3) et la traverse (2).Advantageously, said protuberances (32) may consist of a series of tufted mushroom-shaped piles or a reticle of ribs. The protuberances (32) have the function of anchoring the bowl (3) to the crossbar (2). It is obvious in fact that the moment when inside said bowl (3) is poured the prestressed concrete for the realization of the crossbar (2), the cement paste infiltrates and consolidates in the interstices between said protuberances (32), thereby producing a multitude of connection points to be recessed between the walls of the bowl (3) and the cross member (2).

Les bords latéraux (30) et la paroi de fond (31) de la cuvette (3) sont en matériel élastomère déformable, de manière à étouffer les bruits et les vibrations causés par le passage des trains sur la traverse revêtue (1). Notamment, la paroi de fond (31) de la cuvette (3) se déforme élastiquement par écrasement, en apportant la majeure et la plus importante contribution à l'action d'étouffement et d'amoindrissement des vibrations, avec conséquente réduction du bruit produit par le passage du convoi ferroviaire au-dessus de la traverse revêtue (1). D'autre part, les bords latéraux (30), étant eux-aussi réalisés en élastomère, sont en mesure de se déformer de façon à ne pas empêcher les courses alternées vers le haut-le bas de la traverse (2) par effet des vibrations qui lui sont transmises lors du passage du convoi. Dans la forme préférée d'exécution, l'élastomère utilisé pour la réalisation des bords latéraux (30) est en mesure de se déformer élastiquement, de façon à consentir à la traverse (2) un mouvement vertical.The side edges (30) and the bottom wall (31) of the bowl (3) are deformable elastomeric material, so as to squelch the noise and vibrations caused by the passage of trains on the coated rail (1). In particular, the bottom wall (31) of the bowl (3) is elastically deformed by crushing, bringing the major and the most important contribution to the action of quenching and lessening of the vibrations, with consequent reduction of the noise produced by the passage of the railway train above the coated rail (1). On the other hand, the side edges (30), also being made of elastomer, are able to deform so as not to prevent the alternating upward-downward strokes of the cross member (2) by the effect of vibrations transmitted to it during the passage of the convoy. In the preferred embodiment, the elastomer used for the realization of the side edges (30) is able to deform elastically, so as to consent to the cross member (2) a vertical movement.

La description continue avec référence à la méthode de réalisation de la traverse revêtue (1). Les bords latéraux (30) et la paroi de fond (31) de la cuvette (3) sont réalisés par moulage, en utilisant un matériel élastomère déformable.The description continues with reference to the method of producing the coated transom (1). The lateral edges (30) and the bottom wall (31) of the bowl (3) are made by molding, using a deformable elastomeric material.

Les fers d'armature de la traverse (2) sont disposés à l'intérieur de la cuvette (3), qui à son tour est positionnée à l'intérieur d'un moule ou d'un coffrage, du type conventionnel, présentant une empreinte conforme à la traverse (2) et apte à recevoir la coulée de béton précontraint pour la formation de la traverse (2).The reinforcing bars of the crossbar (2) are arranged inside the bowl (3), which in turn is positioned inside a mold or a formwork, of the conventional type, having a footprint according to the crossbar (2) and adapted to receive the cast of prestressed concrete for the formation of the cross (2).

Les parois de la traverse (2) sont donc en contact aussi bien avec les surfaces internes des bords latéraux (30) que de la paroi de fond (31) de la cuvette (3).The walls of the crossbar (2) are therefore in contact with both the internal surfaces of the lateral edges (30) and of the bottom wall (31) of the bowl (3).

Le béton précontraint est coulé à l'intérieur du moule. Lorsque le béton s'est solidifié, la traverse revêtue (1) est démoulée du dit moule. Il nous presse de préciser que la cuvette (3) pourrait être réalisée en version monolithique ou par assemblage de ses bords latéraux (30) et de sa paroi de fond (31), formés séparément entre eux par moulage. Si l'on utilise une cuvette monolithique, celle-ci est disposée dans l'empreinte du dit moule, tandis que si l'on utilise une cuvette (3) à parois modulables, alors les parois latérales de la dite empreinte sont revêtues par les bords latéraux (30) de la cuvette (3), tandis que la paroi de fond de ladite empreinte est revêtue par la paroi de fond (31) de la cuvette (3).Prestressed concrete is poured into the mold. When the concrete has solidified, the coated crossbar (1) is removed from said mold. It urges us to specify that the bowl (3) could be made in a monolithic version or by assembling its lateral edges (30) and its bottom wall (31), formed separately from each other by molding. If a monolithic bowl is used, it is arranged in the cavity of said mold, whereas if a bowl (3) with adjustable walls is used, then the side walls of said cavity are coated by the side edges (30) of the bowl (3), while the bottom wall of said cavity is coated by the bottom wall (31) of the bowl (3).

La mise en oeuvre de la traverse revêtue (1) dans la dalle (4) en béton ne nécessite que d'une seule opération, c'est à dire celle de noyer la traverse revêtue (1) dans la coulée de la dalle (4) ; vice versa, contrairement à ce qui se vérifie en adoptant les traverses revêtues de l'art antérieur, illustrées dans la Fig. 2, il n'est pas nécessaire d'effectuer des opérations de finition et/ou de scellement après avoir noyé la traverse revêtue (1) dans la dalle (4).The implementation of the coated crossmember (1) in the concrete slab (4) requires only one operation, that is to say that of drowning the coated crossmember (1) in the casting of the slab (4). ); vice versa, contrary to what is true by adopting the sleepers coated with the prior art, illustrated in the Fig. 2 it is not necessary to carry out finishing and / or sealing operations after embedding the coated crossmember (1) in the slab (4).

Il faut également signaler un ultérieur avantage présenté par la traverse revêtue (1) de l'invention en ce qui concerne la simplicité et la rapidité des opérations nécessaires pour son remplacement. En effet, l'extraction de la traverse revêtue (1) de la dalle (4) dans laquelle elle est noyée peut s'effectuer aisément grâce à la surface extérieure, parfaitement lisse, des bords latéraux (30), qui peuvent donc librement coulisser, du bas vers le haut, par rapport à la dalle (4) qui loge ladite traverse revêtue (1).It is also necessary to point out a further advantage presented by the coated crossmember (1) of the invention as regards the simplicity and the speed of the operations necessary for its replacement. Indeed, the extraction of the coated crossmember (1) of the slab (4) in which it is embedded can be done easily thanks to the outer surface, perfectly smooth, side edges (30), which can therefore freely slide from bottom to top relative to the slab (4) which houses said coated crossmember (1).

Par ailleurs, il faut préciser que la phase d'extraction de la traverse revêtue (1) de la dalle (4) s'effectue moyennant une seule opération de soulèvement de la traverse (2), avec la relative cuvette de maintien (3) qui y est ancrée. Vice versa, le remplacement d'une traverse revêtue du type conventionnel comporte deux interventions successives, la première pour extraire et soulever la traverse en béton (102) de la cuvette (103), puis l'extraction de la cuvette (103) de la dalle (104).Furthermore, it should be noted that the extraction phase of the coated cross member (1) of the slab (4) is effected by a single operation of lifting the crossbar (2), with the relative holding bowl (3) which is anchored there. Vice versa, the replacement of a conventional type of coated transom comprises two successive interventions, the first one for extracting and lifting the concrete cross member (102) from the bowl (103), then removing the bowl (103) from the slab (104).

Claims (10)

Traverse revêtue (1) comprenant : - une traverse (2) monobloc en béton armé précontraint pour rails ferroviaires ; - une cuvette (3), qui fonctionne en tant que revêtement pour ladite traverse (2) ; ladite cuvette (3) comprenant des bords latéraux (30) et une paroi de fond (31) en matériel élastomère déformable.Coated cross member (1) comprising: - A crossbar (2) monobloc prestressed reinforced concrete for railway rails; - a bowl (3), which functions as a coating for said crossbar (2); said bowl (3) comprising side edges (30) and a bottom wall (31) of deformable elastomeric material. Traverse revêtue (1) selon la revendication 1, où les bords latéraux (30) et la paroi de fond (31) de la cuvette (3) présentent une surface interne disséminée d'une pluralité de protubérances (32), encastrées dans la masse de béton armé précontraint de la traverse (2).Coated cross member (1) according to claim 1, wherein the side edges (30) and the bottom wall (31) of the bowl (3) have a disseminated inner surface of a plurality of protuberances (32) embedded in the mass. of prestressed reinforced concrete of the crossbar (2). Traverse revêtue (1) selon la revendication 2, où lesdites protubérances (32) sont des pieux en forme de champignon ou un réticule de nervures.The coated cross member (1) according to claim 2, wherein said protuberances (32) are mushroom-shaped piles or a rib reticle. Traverse revêtue (1) selon l'une quelconque des revendications précédentes, où les bords latéraux (30) et la paroi de fond (31) de la cuvette (3) comprennent une surface extérieure lisse.Coated cross member (1) according to any one of the preceding claims, wherein the side edges (30) and the bottom wall (31) of the bowl (3) comprise a smooth outer surface. Traverse revêtue (1) selon l'une quelconque des revendications précédentes, où la cuvette (3) présente une structure monolithique.Coated cross member (1) according to any one of the preceding claims, wherein the bowl (3) has a monolithic structure. Traverse revêtue (1) selon l'une quelconque des revendications de 1 à 4, où la cuvette (3) présente une structure modulable qui comprend les bords latéraux (30) et la paroi de fond (31) moulés séparément l'un de l'autre.Coated cross member (1) according to any one of claims 1 to 4, wherein the bowl (3) has a modular structure which comprises the side edges (30) and the bottom wall (31) molded separately one of the 'other. Méthode pour la réalisation d'une traverse revêtue (1), qui prévoit les étapes suivantes : - réalisation d'une cuvette (3) parallélépipède en matériel élastomère déformable, munie de bords latéraux (30) et de paroi de fond (31) présentant sur leur surface interne une pluralité de protubérances (32) ; - positionnement de la cuvette (3) dans un moule présentant une empreinte conforme à la traverse (2) et apte à recevoir la coulée de béton pour la réalisation de la traverse revêtue (1) ; - positionnement de fers d'armature à l'intérieur de la cuvette (3) ; - coulée de béton précontraint à l'intérieur de l'empreinte du dit moule ; - démoulage de la traverse revêtue (1) du dit moule. Method for producing a coated transom (1), which provides the following steps: - Making a parallelepiped cup (3) of deformable elastomeric material, provided with side edges (30) and bottom wall (31) having on their inner surface a plurality of protuberances (32); - positioning of the bowl (3) in a mold having an impression according to the crossbar (2) and adapted to receive the concrete pour for the realization of the coated crossbar (1); positioning reinforcing bars inside the bowl (3); - Prestressed concrete casting inside the footprint of said mold; - Release of the coated cross member (1) of said mold. Méthode selon la revendication 7, qui prévoit la réalisation d'une cuvette (3) ayant structure monolithique.Method according to claim 7, which provides for the production of a bowl (3) having a monolithic structure. Méthode selon la revendication 7, qui prévoit la réalisation d'une cuvette (3) ayant structure modulable, qui comprend les bords latéraux (30) e la paroi de fond (31), moulés séparément les uns de l'autre.A method according to claim 7, which provides for the production of a bowl (3) having a modular structure, which comprises the side edges (30) and the bottom wall (31), molded separately from one another. Méthode selon la revendication 9, où il est prévu - avant d'effectuer la coulée de béton précontraint - que les parois latérales du moule soient revêtues par les bords latéraux (30) de la cuvette (3), tandis que la paroi de fond de dite empreinte soit revêtue par la paroi de fond (31) de la cuvette (3).A method according to claim 9, wherein it is provided - before the casting of prestressed concrete - that the side walls of the mold are coated by the side edges (30) of the bowl (3), while the bottom wall of the said imprint is coated by the bottom wall (31) of the bowl (3).
EP18153937.0A 2017-02-01 2018-01-29 Coated sleeper and method for producing said coated sleeper Withdrawn EP3358077A1 (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111663375A (en) * 2020-06-18 2020-09-15 成都市新筑路桥机械股份有限公司 Novel beam type embedded track system and construction and maintenance process thereof
WO2021151675A1 (en) * 2020-01-28 2021-08-05 Sonneville Ag Block boot for railway track systems
CN114318957A (en) * 2022-01-04 2022-04-12 北京市市政工程设计研究总院有限公司 Elastic long sleeper track bed with double-layer isolation structure and capable of reducing vibration reduction capacity loss

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US4232822A (en) * 1976-12-28 1980-11-11 Ed. Zublin Aktiengesellschaft Method of and arrangement for correcting the height of railway upper structures
EP0919666A1 (en) * 1997-12-01 1999-06-02 Societe Anonyme De Traverses En Beton Arme Systeme Vagneux Railway sleeper and its sleeper shoe
WO2013036120A1 (en) * 2011-09-09 2013-03-14 Edilon)(Sedra B.V. Resilient rail support block assembly and manufacturing thereof

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4232822A (en) * 1976-12-28 1980-11-11 Ed. Zublin Aktiengesellschaft Method of and arrangement for correcting the height of railway upper structures
EP0919666A1 (en) * 1997-12-01 1999-06-02 Societe Anonyme De Traverses En Beton Arme Systeme Vagneux Railway sleeper and its sleeper shoe
WO2013036120A1 (en) * 2011-09-09 2013-03-14 Edilon)(Sedra B.V. Resilient rail support block assembly and manufacturing thereof

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2021151675A1 (en) * 2020-01-28 2021-08-05 Sonneville Ag Block boot for railway track systems
CN111663375A (en) * 2020-06-18 2020-09-15 成都市新筑路桥机械股份有限公司 Novel beam type embedded track system and construction and maintenance process thereof
CN114318957A (en) * 2022-01-04 2022-04-12 北京市市政工程设计研究总院有限公司 Elastic long sleeper track bed with double-layer isolation structure and capable of reducing vibration reduction capacity loss

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