EP2845950B1 - Ballastless railway track - Google Patents

Ballastless railway track Download PDF

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Publication number
EP2845950B1
EP2845950B1 EP13183036.6A EP13183036A EP2845950B1 EP 2845950 B1 EP2845950 B1 EP 2845950B1 EP 13183036 A EP13183036 A EP 13183036A EP 2845950 B1 EP2845950 B1 EP 2845950B1
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Prior art keywords
rail
railroad
concrete
rails
projecting
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EP13183036.6A
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German (de)
French (fr)
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EP2845950A1 (en
Inventor
Joseph Rode
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Prefarails Holding
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Prefarails Holding
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Priority to ES13183036.6T priority Critical patent/ES2667329T3/en
Application filed by Prefarails Holding filed Critical Prefarails Holding
Priority to PT131830366T priority patent/PT2845950T/en
Priority to EP13183036.6A priority patent/EP2845950B1/en
Priority to MA38882A priority patent/MA38882B1/en
Priority to CN201480049149.7A priority patent/CN105874125B/en
Priority to PCT/EP2014/068874 priority patent/WO2015032875A1/en
Priority to TN2016000082A priority patent/TN2016000082A1/en
Publication of EP2845950A1 publication Critical patent/EP2845950A1/en
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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
    • E01B19/00—Protection of permanent way against development of dust or against the effect of wind, sun, frost, or corrosion; Means to reduce development of noise
    • 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

Definitions

  • the present invention relates to a railway, in particular a railway resting on a base or platform, such as the ground, without ballast, and in which the rails are arranged on a construction made of hard materials, such as reinforced concrete. . It also relates to prefabricated railroad modules that can be assembled to form a railroad made of hard materials to be laid on a raft or platform such as the ground, without the use of ballast.
  • the rails are secured to wooden sleepers, concrete, including prestressed concrete, metal or composed of concrete blocks connected by a metal spacer.
  • the sleepers maintain the gauge of the rails and the desired inclination of the track. They are laid on or embedded in a layer of ballast made of hard crushed rock and transmit the load to the ballast and thus to the ground.
  • the thickness of the ballast layer is a function of the load and the intensity of the traffic and is of the order of 30 to 50 cm.
  • the ballast maintains the leveling of the track and ensures a stable position in the plane of the track, resisting transverse forces which tend to distort the course and longitudinal forces.
  • the ballast must be permeable to water and provide adequate elasticity.
  • Concrete railroads are also known, the ballast of which has been replaced at least in part by a reinforced concrete base; see EP-0576392 , WO2008 / 025854 , WO2008 / 138913 and CA-776524 .
  • Such railways especially those in which the rails are embedded in concrete, have been used to facilitate the passage of cars or pedestrians, or in railway tunnels, see Pragal, Portugal, Atocha station - Madrid.
  • the elasticity of the rail support is generally provided by elements made of elastomeric materials. These are designed to provide acoustic and electrical insulation of the rail relative to the concrete on which or in which the rails rest.
  • the document CA-A-2187041 discloses a railroad track having two substantially parallel rails and a concrete support structure, the support structure having projecting rail supports which are integral with a concrete baseplate resting on the ground and which form a substantially continuous groove between both rails.
  • One of the aims of the invention is to provide a railway with hard materials, without ballast, which makes it possible to avoid or at least to significantly delay the silting or the snow during the exposure to the storms of sand or storms of snow.
  • Another object of the invention is to provide a prefabricated module that can be assembled with a similar module to form a railroad made of hard materials to be laid on a raft or platform such as the ground, without the use of ballast.
  • Yet another object of the invention is to maintain the constant elasticity of the track, regardless of weather conditions, sand or snow.
  • a further object of the invention is to reduce the costs of maintenance of the track (tamping, maintenance of fasteners) and the cost of screening the ballast in order to extract the impurities to make the original elasticity of the track and Finally, to extend the life of the track.
  • the invention consists of a railroad track having two substantially parallel rails and a concrete support structure, the support structure having projecting rail supports which are integral with a concrete baseplate resting on the ground or on a foundation. and which form a substantially continuous groove between the two rails the rail supports each consist of a continuous shoulder or a projecting beam, integral with the concrete slab resting on the ground or on a foundation, the rail supports have openings therethrough in the direction transverse to the track, preferably located opposite each other, to allow the passage of sand or even snow in case of storm, and the openings are narrowing from the outside to the groove between the two rails.
  • the assembly comprising the two continuous shoulders and the raft is monolithic and made of reinforced concrete, especially prestressed concrete to withstand the static and dynamic loads of vehicles traveling on the track.
  • the railway of the invention allows easy cleaning of the throat after the storm, especially with the aid of a handling machine, such as a excavator which can advantageously circulate on the track itself.
  • the rails can be fixed in a manner known per se on said supports.
  • the upper part of said supports has a triangular or trapezoidal or convex section avoiding or reducing the risk of accumulation of sand on the crest of the support, in the immediate vicinity of the rails.
  • the rail is surrounded by a jacket of elastomeric material and embedded in the concrete of the rail support projecting.
  • the jacket ensures an elastic housing of the rail in the direction perpendicular to the track and transversely to it, role which in the state of the art is provided by the ballast.
  • the invention thus makes it possible to avoid the harmful consequences that the sanding and snow-making of the ballast generate.
  • the jacket provides acoustic and electrical insulation of the rail.
  • the jacket may advantageously consist of ground tire particles bonded together by a binder based on polyurethane, polyethylene, for example recycled polyethylene, or other suitable binders. Rubber from recycled tires has been found to provide adequate elasticity for this type of application. Those skilled in the art will adapt the thickness of the jacket to the mechanical requirements imposed by the safety coefficients, the static and dynamic loads to bear in each case of application. In addition, the jacket is intended to guarantee the electrical insulation of the rail relative to its support.
  • the railway according to the invention can advantageously be cast in situ.
  • prefabricated modules can be provided that can be arranged and assembled on site one after the other to form a continuous path.
  • the figure 1 represents a section of railroad track according to the invention, but the following description is also suitable for a railway line finished or cast on site or for a prefabricated track element.
  • the railway of the invention comprises two supports 3 and 5 and two rails 7 and 8.
  • the two supports project on a slab slab 11 and preferably form a single piece therewith.
  • This is advantageously reinforced concrete, preferably prestressed.
  • the slab slab rests on the ground or on a suitable foundation.
  • Vignole rails have been shown; the invention encompasses, of course, also other models of rail, such as rails groove or rut.
  • the rails 7 and 8 are advantageously embedded in the projecting supports and held in position by rubber covers 13 and 15.
  • the covers 13 and 15 have shoulders 17, 19, 21 and 23 which hold them in their housing made in the housing.
  • concrete rail supports Advantageously, the concrete structure or at least the rail supports 3 and 5 or the upper part thereof is cast around the corresponding rail provided with its jacket.
  • Jackets are known, in particular by patent applications EP-854 234 , WO2008 / 138913 and WO2008 / 025854 . They provide a support and elastic housing of the rail, damping vibrations and hold the rails in place on the concrete support. Jackets can consist of several elements assembled or glued on the rails so as to form an electrical insulation with respect to the concrete support. They may also consist of a single piece of defined length, for example extruded, and be slipped on the rail before placing it for casting the support in concrete. It is also possible to extrude the jacket on site, possibly directly around the rail, before proper placement for pouring the concrete support.
  • the upper end of the rail supports advantageously has a triangular or trapezoidal or convex section to reduce the risk of accumulation of sand or snow on the supports, close to the rails.
  • the jacket wife at its upper part a shape and section adapted to the shape of the support.
  • openings are made in the projecting supports. They pass through said supports 3 and 5 transversely with respect to the track.
  • the openings 31 and 33 of the two rail supports face each other.
  • the openings 31 and 33 tapering from the outside to the inside. In order to form a nozzle that accelerates the wind laden with sand and thus promotes the passage of wind and sand under the rails.
  • the groove formed between the two rail supports 3 and 5 serves as a buffer reservoir which allows the sand to accumulate for a certain period of time and thus significantly delay sand or snow on the road.
  • the two rail supports 3, 5 form a continuous groove whose depth will be defined according to local sand or snow conditions. In case of silting or snow, it can be cleaned or emptied quite easily, especially with a handling machine, such as an excavator that travels on the track.
  • a handling machine such as an excavator that travels on the track.

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Railway Tracks (AREA)
  • Road Paving Structures (AREA)
  • Machines For Laying And Maintaining Railways (AREA)

Description

La présente invention est relative à une voie ferrée, notamment une voie ferrée reposant sur une base ou plate-forme, tel que le sol, sans ballast, et dans laquelle les rails sont agencés sur une construction en matériaux durs, tels que du béton armé. Elle concerne également des modules de voie ferrée préfabriqués qui peuvent être assemblés afin de constituer une voie ferrée en matériaux durs à poser sur un radier ou plate-forme tel que le sol, sans utilisation de ballast.The present invention relates to a railway, in particular a railway resting on a base or platform, such as the ground, without ballast, and in which the rails are arranged on a construction made of hard materials, such as reinforced concrete. . It also relates to prefabricated railroad modules that can be assembled to form a railroad made of hard materials to be laid on a raft or platform such as the ground, without the use of ballast.

Arrière-plan technologiqueTechnological background

Dans une voie ferrée classique, les rails sont solidarisés à des traverses en bois, en béton, notamment en béton précontraint, métalliques ou composées de blocs en béton reliés par une entretoise métallique. Les traverses maintiennent l'écartement des rails et l'inclinaison voulue de la voie. Elles sont posées sur ou noyées dans une couche de ballast constitué de roches dures concassées et transmettent la charge au ballast et ainsi au sol. L'épaisseur de la couche de ballast est fonction de la charge et de l'intensité du trafic et est de l'ordre de 30 à 50 cm. Le ballast maintien le nivellement de la voie et assure une position stable dans le plan de la voie, en résistant aux efforts transversaux qui tendent à déformer le tracé et aux efforts longitudinaux. Le ballast doit être perméable à l'eau et assurer une élasticité appropriée.In a conventional railway, the rails are secured to wooden sleepers, concrete, including prestressed concrete, metal or composed of concrete blocks connected by a metal spacer. The sleepers maintain the gauge of the rails and the desired inclination of the track. They are laid on or embedded in a layer of ballast made of hard crushed rock and transmit the load to the ballast and thus to the ground. The thickness of the ballast layer is a function of the load and the intensity of the traffic and is of the order of 30 to 50 cm. The ballast maintains the leveling of the track and ensures a stable position in the plane of the track, resisting transverse forces which tend to distort the course and longitudinal forces. The ballast must be permeable to water and provide adequate elasticity.

Dans le cas de voies ferrées construites dans des régions sablonneuses, comme les dunes ou le désert, le sable ou tout autre matériau en suspension en cas de vent ou plus particulièrement de tempête de sable, a tendance à colmater les interstices entre les pierrailles du ballast. Il en résulte une perte d'élasticité et de perméabilité du ballast ce qui conduit à devoir limiter la vitesse d'exploitation et en augmente les fréquences d'entretien. Il en résulte aussi une réduction importante de la durée de vie de la voie. Les coûts d'entretien et/ou de remplacement du ballast sont donc élevés. Par ailleurs, le sable remplit aisément l'espace entre rails et en cas de tempête risque de recouvrir totalement la voie ferrée, rendant ainsi difficile, dangereuse, voire impossible toute circulation de véhicule ferroviaire.In the case of railways built in sandy regions, such as dunes or desert, sand or other suspended material in the event of wind or more particularly of sandstorm, has a tendency to clog the interstices between the stones of the ballast. This results in a loss of elasticity and permeability of the ballast which leads to having to limit the speed of operation and increases maintenance frequencies. This also results in a significant reduction in the life of the track. The costs of maintenance and / or replacement of the ballast are therefore high. In addition, the sand easily fills the space between rails and in case of storm may completely cover the railway, thus making it difficult, dangerous or impossible for any rail vehicle traffic.

Dans le cas de voies ferrées construites dans des régions fortement enneigées, la neige a tendance à s'introduire dans le ballast et de le figer par congélation, diminuant ainsi l'élasticité du support. Par ailleurs, en cas de tempête, la neige risque de recouvrir totalement la voie ferrée, rendant toute circulation périlleuse, voire impossible.In the case of railways built in heavily snow-covered areas, snow tends to get into the ballast and congeal it by freezing, thus reducing the elasticity of the support. Moreover, in the event of a storm, the snow risks completely covering the railway, making any traffic dangerous or even impossible.

On connaît également des voies ferrées en béton, dont le ballast a été remplacé du moins en partie par une assise en béton armé ; voir EP-0576392 , WO2008/025854 , WO2008/138913 et CA-776524 . De telles voies ferrées, notamment celles dans lesquelles les rails sont noyés dans le béton, ont été utilisées afin de faciliter le passage de voitures ou de piétons, ou dans des tunnels ferroviaires, voir Pragal, Portugal, gare Atocha - Madrid.Concrete railroads are also known, the ballast of which has been replaced at least in part by a reinforced concrete base; see EP-0576392 , WO2008 / 025854 , WO2008 / 138913 and CA-776524 . Such railways, especially those in which the rails are embedded in concrete, have been used to facilitate the passage of cars or pedestrians, or in railway tunnels, see Pragal, Portugal, Atocha station - Madrid.

Lorsque les rails sont noyés dans le béton, l'élasticité du support des rails est généralement assurée par des éléments en matériaux élastomères. Ceux-ci sont conçus pour assurer une isolation acoustique et électrique du rail par rapport au béton sur lequel ou dans lequel les rails reposent.When the rails are embedded in the concrete, the elasticity of the rail support is generally provided by elements made of elastomeric materials. These are designed to provide acoustic and electrical insulation of the rail relative to the concrete on which or in which the rails rest.

Vu l'absence de ballast, ce type de voie ferrée ne présente pas les inconvénients cités ci-dessus en rapport avec le ballast, mais l'ensablement ou l'enneigement de la voie pose toujours problème.Given the absence of ballast, this type of railway does not have the disadvantages mentioned above in relation to the ballast, but the silting or the snow cover of the track always poses problem.

Le document CA-A-2187041 divulgue une voie ferrée comportant deux rails essentiellement parallèles et une structure de support en béton, la structure de support comportant des supports de rail en saillie, qui sont solidaires d'un radier en béton reposant sur le sol et qui forment une gorge essentiellement continue entre les deux rails.The document CA-A-2187041 discloses a railroad track having two substantially parallel rails and a concrete support structure, the support structure having projecting rail supports which are integral with a concrete baseplate resting on the ground and which form a substantially continuous groove between both rails.

Buts de l'inventionGoals of the invention

Un des buts de l'invention consiste à fournir une voie ferrée en matériaux durs, sans ballast, qui permet d'éviter ou tout au moins de retarder significativement l'ensablement ou l'enneigement lors de l'exposition aux tempêtes de sables ou tempêtes de neige.One of the aims of the invention is to provide a railway with hard materials, without ballast, which makes it possible to avoid or at least to significantly delay the silting or the snow during the exposure to the storms of sand or storms of snow.

Un autre but de l'invention consiste à fournir un module préfabriqué qui peut être assemblé avec un module similaire afin de constituer une voie ferrée en matériaux durs à poser sur une radier ou plate-forme tel que le sol, sans utilisation de ballast.Another object of the invention is to provide a prefabricated module that can be assembled with a similar module to form a railroad made of hard materials to be laid on a raft or platform such as the ground, without the use of ballast.

Encore un autre but de l'invention consiste à maintenir l'élasticité constante de la voie, indépendamment des conditions climatiques, du sable ou de la neige.Yet another object of the invention is to maintain the constant elasticity of the track, regardless of weather conditions, sand or snow.

Un but supplémentaire de l'invention est de réduire les coûts de maintenance de la voie (bourrage, entretien des attaches) et le coût du criblage du ballast afin d'en extraire les impuretés pour rendre l'élasticité d'origine de la voie et enfin d'allonger la durée de vie de la voie.A further object of the invention is to reduce the costs of maintenance of the track (tamping, maintenance of fasteners) and the cost of screening the ballast in order to extract the impurities to make the original elasticity of the track and Finally, to extend the life of the track.

Description de l'inventionDescription of the invention

L'invention consiste en une voie ferrée comportant deux rails essentiellement parallèles et une structure de support en béton, la structure de support comportant des supports de rail en saillie, qui sont solidaires d'un radier en béton reposant sur le sol ou sur une fondation et qui forment une gorge essentiellement continue entre les deux rails les supports de rail consistent chacun en un épaulement continu ou une poutre en saillie, solidaire du radier en béton reposant sur le sol ou sur une fondation, les supports de rail comportent des ouvertures les traversant dans le sens transversal à la voie, de préférence situées l'une en face de l'autre, afin de permettre le passage de sable ou même de neige en cas de tempête, et les ouvertures vont en se rétrécissant de l'extérieur vers la gorge comprise entre les deux rails.The invention consists of a railroad track having two substantially parallel rails and a concrete support structure, the support structure having projecting rail supports which are integral with a concrete baseplate resting on the ground or on a foundation. and which form a substantially continuous groove between the two rails the rail supports each consist of a continuous shoulder or a projecting beam, integral with the concrete slab resting on the ground or on a foundation, the rail supports have openings therethrough in the direction transverse to the track, preferably located opposite each other, to allow the passage of sand or even snow in case of storm, and the openings are narrowing from the outside to the groove between the two rails.

De préférence, l'ensemble comportant les deux épaulements continus et la radier est monolithique et constitué de béton armé, tout particulièrement de béton précontraint afin de pouvoir supporter les charges statiques et dynamiques des véhicules circulant sur la voie.Preferably, the assembly comprising the two continuous shoulders and the raft is monolithic and made of reinforced concrete, especially prestressed concrete to withstand the static and dynamic loads of vehicles traveling on the track.

On a constaté qu'en cas de tempête de sable notamment, la gorge créée entre les deux rails peut se remplir de sable. Vu la profondeur de la gorge, une quantité significative de sable peut s'y accumuler avant de recouvrir la voie et la rendre impraticable.It has been noted that in the event of a sandstorm in particular, the groove created between the two rails can be filled with sand. Given the depth of the gorge, a significant amount of sand can accumulate before covering the track and make it impassable.

On a également constaté que lorsque des ouvertures sont pratiquées dans les supports de rail, le vent chasse en partie du moins le sable au travers de ces ouvertures et au travers de la gorge évitant ou retardant significativement l'accumulation de sable dans ladite gorge. Des ouvertures se rétrécissant dans les sens allant de l'extérieur vers la gorge accentuent encore cet effet par l'effet de tuyère ainsi généré.It has also been found that when openings are made in the rail supports, the wind partly expels at least the sand through these openings and through the throat avoiding or significantly delaying the accumulation of sand in said groove. Openings narrowing in the directions from the outside to the throat further accentuate this effect by the nozzle effect thus generated.

Par ailleurs, vu l'agencement d'une gorge continue et sans obstacle, la voie ferrée de l'invention permet un nettoyage aisé de la gorge après la tempête, notamment à l'aide d'un engin de manutention, comme par exemple une pelleteuse qui peut avantageusement circuler sur la voie elle-même.Moreover, given the arrangement of a continuous and unobstructed groove, the railway of the invention allows easy cleaning of the throat after the storm, especially with the aid of a handling machine, such as a excavator which can advantageously circulate on the track itself.

La description ci-dessus des avantages de l'invention dans le cas de l'utilisation de la voie ferrée en milieu fortement sablonneux, comme le désert ou les dunes, s'applique par analogie aussi au cas de l'utilisation de la voie ferrée en milieu fortement enneigé.The above description of the advantages of the invention in the case of the use of the railway in a highly sandy environment, such as the desert or the dunes, applies by analogy also to the case of the use of the railway in a heavily snowy environment.

Les rails peuvent être fixés de manière connue en soi sur lesdits supports. Avantageusement, la partie supérieure desdits supports présente une section triangulaire ou trapézoïdale ou convexe évitant ou réduisant le risque d'accumulation de sable sur la crête du support, à proximité immédiate des rails.The rails can be fixed in a manner known per se on said supports. Advantageously, the upper part of said supports has a triangular or trapezoidal or convex section avoiding or reducing the risk of accumulation of sand on the crest of the support, in the immediate vicinity of the rails.

Selon une forme d'exécution préférée, le rail est entouré d'une jaquette en matériau élastomère et noyé dans le béton du support de rail en saillie. La jaquette assure un logement élastique du rail dans le sens perpendiculaire à la voie ainsi que transversalement par rapport à celle-ci, rôle qui dans l'état de la technique est assuré par le ballast. L'invention permet ainsi d'éviter les conséquences néfastes que génèrent l'ensablement et l'enneigement du ballast. Il n'est pas nécessaire non plus de prévoir de fixation métallique du rail à son support en béton, le rail étant maintenu sur son support par la jaquette noyée dans le béton. Cet agencement permet donc d'éviter les fixations métalliques qui ont tendance à se corroder. Par ailleurs, la jaquette assure une isolation acoustique et électrique du rail.According to a preferred embodiment, the rail is surrounded by a jacket of elastomeric material and embedded in the concrete of the rail support projecting. The jacket ensures an elastic housing of the rail in the direction perpendicular to the track and transversely to it, role which in the state of the art is provided by the ballast. The invention thus makes it possible to avoid the harmful consequences that the sanding and snow-making of the ballast generate. Nor is it necessary to provide metal fastening of the rail to its concrete support, the rail being held on its support by the jacket embedded in the concrete. This arrangement therefore avoids metal fasteners that tend to corrode. In addition, the jacket provides acoustic and electrical insulation of the rail.

La jaquette peut avantageusement être constituée de particules de pneumatiques broyés, liées entre elles par un liant à base de polyuréthane, de polyéthylène, par exemple du polyéthylène recyclé, ou d'autres liants adéquats. On a constaté que le caoutchouc provenant de pneumatiques recyclés offre une élasticité adéquate pour ce genre d'application. L'homme de l'art adaptera l'épaisseur de la jaquette aux exigences mécaniques imposées par les coefficients de sécurité, les charges statiques et dynamiques à supporter dans chaque cas d'application. Par ailleurs, la jaquette est destinée à garantir l'isolation électrique du rail par rapport à son support.The jacket may advantageously consist of ground tire particles bonded together by a binder based on polyurethane, polyethylene, for example recycled polyethylene, or other suitable binders. Rubber from recycled tires has been found to provide adequate elasticity for this type of application. Those skilled in the art will adapt the thickness of the jacket to the mechanical requirements imposed by the safety coefficients, the static and dynamic loads to bear in each case of application. In addition, the jacket is intended to guarantee the electrical insulation of the rail relative to its support.

La voie ferrée selon l'invention peut avantageusement être coulée sur place. Selon une autre forme d'exécution de l'invention, on peut prévoir des modules préfabriqués que l'on peut agencer et assembler sur chantier l'un à la suite de l'autre afin de former une voie continue.The railway according to the invention can advantageously be cast in situ. According to another embodiment of the invention, prefabricated modules can be provided that can be arranged and assembled on site one after the other to form a continuous path.

Description des figuresDescription of figures

L'invention sera décrite plus en détails ci-dessous, en référence aux dessins annexés dans lesquels :

  • La figure 1 est une vue en perspective d'un module de voie ferrée selon l'invention ;
  • La figure 2 est une représentation en coupe au droit des supports selon la ligne A-A' de la figure 1 ;
  • La figure 3 est une représentation en coupe au droit des évidements éventuels selon la ligne B-B' de la figure 1 ; et
  • La figure 4 est une vue latérale d'un module de voie ferrée selon l'invention.
The invention will be described in more detail below with reference to the accompanying drawings in which:
  • The figure 1 is a perspective view of a railroad module according to the invention;
  • The figure 2 is a sectional representation at the right of the supports according to the line AA 'of the figure 1 ;
  • The figure 3 is a representation in section to the right of the possible recesses according to the line BB 'of the figure 1 ; and
  • The figure 4 is a side view of a railroad module according to the invention.

Description détaillée de l'inventionDetailed description of the invention

La figure 1 représente un tronçon de voie ferrée suivant l'invention, mais la description qui suit convient également pour une voie ferrée finie ou coulée sur place ou pour un élément de voie préfabriqué.The figure 1 represents a section of railroad track according to the invention, but the following description is also suitable for a railway line finished or cast on site or for a prefabricated track element.

La voie ferrée de l'invention comporte deux supports 3 et 5 et deux rails 7 et 8. Les deux supports forment saillie sur une dalle de radier 11 et forment de préférence une seule pièce avec celle-ci. Celle-ci est avantageusement en béton armé, de préférence précontraint. La dalle de radier repose sur le sol ou sur une fondation adéquate.The railway of the invention comprises two supports 3 and 5 and two rails 7 and 8. The two supports project on a slab slab 11 and preferably form a single piece therewith. This is advantageously reinforced concrete, preferably prestressed. The slab slab rests on the ground or on a suitable foundation.

On a représenté des rails de type Vignole; l'invention englobe, bien entendu, aussi d'autres modèles de rail, comme par exemple les rails à gorge ou ornière. Les rails 7 et 8 sont avantageusement noyés dans les supports en saillie et maintenus en position par des jaquettes en caoutchouc 13 et 15. Les jaquettes 13 et 15 présentent des épaulements 17, 19, 21 et 23 qui les retiennent dans leur logement pratiqué dans le béton des supports de rail. Avantageusement, la structure en béton ou du moins les supports de rail 3 et 5 ou la partie supérieure de ceux-ci est coulée autour du rail correspondant muni de sa jaquette.Vignole rails have been shown; the invention encompasses, of course, also other models of rail, such as rails groove or rut. The rails 7 and 8 are advantageously embedded in the projecting supports and held in position by rubber covers 13 and 15. The covers 13 and 15 have shoulders 17, 19, 21 and 23 which hold them in their housing made in the housing. concrete rail supports. Advantageously, the concrete structure or at least the rail supports 3 and 5 or the upper part thereof is cast around the corresponding rail provided with its jacket.

On connaît des jaquettes, notamment par les demandes de brevet EP-854234 , WO2008/138913 et WO2008/025854 . Elles assurent un support et logement élastique du rail, amortissant les vibrations et maintiennent les rails en place sur le support en béton. Les jaquettes peuvent consister en plusieurs éléments assemblés ou collés sur les rails de manière à former une isolation électrique par rapport au support en béton. Elles peuvent également consister en une seule pièce de longueur définie, par exemple extrudée, et être enfilée sur le rail avant placement de celui-ci pour coulage du support en béton. On peut également extruder la jaquette sur place, éventuellement directement autour du rail, avant placement adéquat pour coulage du support en béton.Jackets are known, in particular by patent applications EP-854 234 , WO2008 / 138913 and WO2008 / 025854 . They provide a support and elastic housing of the rail, damping vibrations and hold the rails in place on the concrete support. Jackets can consist of several elements assembled or glued on the rails so as to form an electrical insulation with respect to the concrete support. They may also consist of a single piece of defined length, for example extruded, and be slipped on the rail before placing it for casting the support in concrete. It is also possible to extrude the jacket on site, possibly directly around the rail, before proper placement for pouring the concrete support.

Divers matériaux ont été utilisés pour les jaquettes. On a obtenu de bons résultats avec des particules de caoutchouc de pneumatiques broyés, liées par un liant à base de polyuréthane ou de polyéthylène, de préférence de polyéthylène recyclé. On peut alors régler l'élasticité de la jaquette en fonction de son épaisseur en pratiquant des trous ou ouvertures dans le coeur du matériau, sans pour autant affecter les fonctions de logement élastique et d'isolant de la jaquette.Various materials were used for the jackets. Good results have been obtained with comminuted tire rubber particles bonded by a binder based on polyurethane or polyethylene, preferably recycled polyethylene. It is then possible to adjust the elasticity of the jacket according to its thickness by making holes or openings in the core of the material, without affecting the elastic housing functions and insulation of the jacket.

L'extrémité supérieure des supports de rail présente avantageusement une section triangulaire ou trapézoïdale ou convexe afin de réduire le risque d'accumulation de sable ou de neige sur les supports, à proximité des rails. Dans ce cas, la jaquette épouse à sa partie supérieure une forme et section adaptées à la forme du support.The upper end of the rail supports advantageously has a triangular or trapezoidal or convex section to reduce the risk of accumulation of sand or snow on the supports, close to the rails. In this case, the jacket wife at its upper part a shape and section adapted to the shape of the support.

Selon une forme d'exécution avantageuse de l'invention, et comme on peut le voir notamment dans les figures 1, 3 et 4, des ouvertures sont pratiquées dans les supports en saillie. Elles traversent lesdits supports 3 et 5 transversalement par rapport à la voie. De préférence, les ouvertures 31 et 33 des deux supports de rail se font face. En outre, et comme représenté à la figure 4, les ouvertures 31 et 33 vont en se rétrécissant de l'extérieur vers l'intérieur. De manière à former une tuyère qui accélère le vent chargé de sable et qui favorise ainsi le passage du vent et du sable sous les rails. Lorsque la tempête de sable ou de neige persiste et que les ouvertures se colmatent, la gorge formée entre les deux supports de rail 3 et 5 sert de réservoir tampon qui permet d'accumuler le sable pendant une certaine période de temps et retarder ainsi significativement l'ensablement ou l'enneigement de la voie.According to an advantageous embodiment of the invention, and as can be seen in particular in the Figures 1, 3 and 4 openings are made in the projecting supports. They pass through said supports 3 and 5 transversely with respect to the track. Preferably, the openings 31 and 33 of the two rail supports face each other. In addition, and as shown in figure 4 , the openings 31 and 33 tapering from the outside to the inside. In order to form a nozzle that accelerates the wind laden with sand and thus promotes the passage of wind and sand under the rails. When the sandstorm or snowstorm persists and the openings become clogged, the groove formed between the two rail supports 3 and 5 serves as a buffer reservoir which allows the sand to accumulate for a certain period of time and thus significantly delay sand or snow on the road.

Les deux supports de rail 3, 5 forment une gorge continue dont la profondeur sera définie suivant les critères d'ensablement ou d'enneigement locaux. En cas d'ensablement ou d'enneigement, celle-ci peut être nettoyée ou vidée assez facilement, notamment à l'aide d'un engin de manutention, comme par exemple une pelleteuse qui circule sur la voie. L'homme de l'art appréciera que diverses variantes sont possibles sans pour autant s'écarter des caractéristiques essentielles de l'invention, comme définies dans les revendications.The two rail supports 3, 5 form a continuous groove whose depth will be defined according to local sand or snow conditions. In case of silting or snow, it can be cleaned or emptied quite easily, especially with a handling machine, such as an excavator that travels on the track. Those skilled in the art will appreciate that various alternatives are possible without departing from the essential features of the invention as defined in the claims.

Claims (12)

  1. Railroad comprising two essentially parallel rails (7,8) and a concrete support structure, the support structure comprising projecting rail supports (3,5) which are bound to a concrete base (11) which in turn is supported on the ground or on a foundation, and the rail supports forming an essentially continuous groove between the two rails, the rail supports (3,5) consisting each in a projecting continuous rib or a beam, bound to the concrete base (11) comprising through holes (31,33) oriented transversally to the rail road, preferably arranged one opposite the other, characterized in that the through holes (31,33) progressively narrow down from the outside of the rail road toward the groove comprised between the two rails (7,8).
  2. Railroad according to claim 1 characterized in that the support structure comprising the projecting rail supports (3,5) and the base (11) form a monolithic system made of reinforced, preferably prestressed concrete.
  3. Railroad according to any of the preceding claims characterized in that the upper part of the rail supports (3,5) show a triangular, trapezoidal or convex cross-section.
  4. Railroad according to any preceding claim characterized in that the rail (7,8) is enveloped by a jacket (13,15) made of elastomeric material and embedded in the concrete of the projecting rail support rail (3,5).
  5. Railroad according to claim 4 characterized in that the jacket (13,15) is made of ground tire particles, bound together by a binder based on polyurethane, polyethylene, for instance recycled polyethylene, or other suitable binders.
  6. Railroad according to any preceding claim characterized in that it consists in an assembly of prefabricated modules arranged and assembled one after the other.
  7. Railroad according to any of claims 1 to 5 characterized in that the concrete support structure is cast on site, preferably continuously.
  8. Prefabricated railroad module capable of being assembled with a similar module in order to from a rail road, the module comprising two essentially parallel rails (7,8) and a concrete support structure, the support structure comprising projecting rail supports (3,5) which are bound to a concrete base (11) which in turn is supported on the ground or on a foundation, and the rail supports forming an essentially continuous groove between the two rails, the rail supports (3,5) consisting each in a projecting continuous rib or beam, bound to the concrete base (11) comprising through holes (31,33) oriented transversaly to the rail road, preferably arranged one opposite the other, the through holes (31,33) progressively narrowing down from the outside of the rail road toward the groove comprised between the two rails (7,8).
  9. Railroad module according to claim 8 characterized in that the support structure comprising the projecting rail supports (3,5) and the base (11) form a monolithic system made of reinforced, preferably prestressed concrete.
  10. Railroad module according to any of claims 8 or 9 characterized in that the upper part of the said rail supports (3,5) show a triangular, trapezoidal or convex cross-section.
  11. Railroad module according to any of claims 8 to 10 characterized in that the rail (7,8) is enveloped by a jacket (13,15) made of elastomeric material and embedded in the concrete of the projecting rail support rail (3,5).
  12. Railroad module according to any of claims 8 to 11 characterized in that the jacket (13,15) is made of ground tire particles, bound together by a binder based on polyurethane, polyethylene, for instance recycled polyethylene, or other suitable binders.
EP13183036.6A 2013-09-04 2013-09-04 Ballastless railway track Active EP2845950B1 (en)

Priority Applications (7)

Application Number Priority Date Filing Date Title
PT131830366T PT2845950T (en) 2013-09-04 2013-09-04 Ballastless railway track
EP13183036.6A EP2845950B1 (en) 2013-09-04 2013-09-04 Ballastless railway track
ES13183036.6T ES2667329T3 (en) 2013-09-04 2013-09-04 Railroad without ballast
CN201480049149.7A CN105874125B (en) 2013-09-04 2014-09-04 Without quarrel railway
MA38882A MA38882B1 (en) 2013-09-04 2014-09-04 Railway without ballast
PCT/EP2014/068874 WO2015032875A1 (en) 2013-09-04 2014-09-04 Ballast-free railway track
TN2016000082A TN2016000082A1 (en) 2013-09-04 2014-09-04 RAILWAY WITHOUT BALLAST.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP13183036.6A EP2845950B1 (en) 2013-09-04 2013-09-04 Ballastless railway track

Publications (2)

Publication Number Publication Date
EP2845950A1 EP2845950A1 (en) 2015-03-11
EP2845950B1 true EP2845950B1 (en) 2018-02-14

Family

ID=49115405

Family Applications (1)

Application Number Title Priority Date Filing Date
EP13183036.6A Active EP2845950B1 (en) 2013-09-04 2013-09-04 Ballastless railway track

Country Status (7)

Country Link
EP (1) EP2845950B1 (en)
CN (1) CN105874125B (en)
ES (1) ES2667329T3 (en)
MA (1) MA38882B1 (en)
PT (1) PT2845950T (en)
TN (1) TN2016000082A1 (en)
WO (1) WO2015032875A1 (en)

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Publication number Priority date Publication date Assignee Title
CA776524A (en) 1968-01-23 Societe D'etudes Ferroviaires Voie ferree sans ballast assurant le montage elastique des rails
FR2691484B1 (en) 1992-05-22 1994-07-29 Vanotti Gerard METHOD OF CONSTRUCTING A RAILWAY IN CONCRETE.
CA2187041C (en) * 1996-10-03 1999-04-06 Bratislav Savic Construction for railways supports without ties and ballast
BE1010355A6 (en) 1997-01-16 1998-06-02 Stephane Dirven Anti-noise.
DE19822178C2 (en) * 1998-05-16 2003-03-13 Weiss Gmbh & Co Leonhard Track structure in endless construction
DE10317014A1 (en) * 2003-04-11 2004-10-21 Max Bögl Bauunternehmung GmbH & Co. KG Track for a track-bound vehicle with a long stator linear drive having at least one long stator as well as a kit and a stator package for its manufacture
EP1895054A1 (en) 2006-08-31 2008-03-05 Feronia S.A. Sound insulating device for rails for railway vehicles
US8393552B2 (en) 2007-05-11 2013-03-12 Prefarails S.A. Prefabricated module for a railway and method for manufacturing this module
CN102071604B (en) * 2011-01-21 2012-11-28 朱颖 Vibration-damping and noise-reducing jacket for railway steel rail
DE102011015210A1 (en) * 2011-03-25 2012-09-27 Strabag Rail Gmbh Roadway for rail vehicles and rail support for such a roadway
CN102776809B (en) * 2011-05-11 2014-12-31 陈海水 Damping and noise reducing structure in train traveling
EP2623670B1 (en) * 2012-02-03 2018-01-03 Ed. Züblin AG Ballastless railway track structure for rail vehicles
DE102012102598A1 (en) * 2012-03-26 2013-09-26 Ed. Züblin Ag Track path e.g. fixed track path, for rail-bound vehicle, has passage part formed by lower side of rail, upper side of track supporting body and rail supports, where passage part enables obtaining uniform wind stream by aerodynamic geometry

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Also Published As

Publication number Publication date
PT2845950T (en) 2018-05-09
EP2845950A1 (en) 2015-03-11
CN105874125B (en) 2018-04-03
WO2015032875A1 (en) 2015-03-12
CN105874125A (en) 2016-08-17
MA38882B1 (en) 2017-09-29
TN2016000082A1 (en) 2017-07-05
MA38882A1 (en) 2016-10-31
ES2667329T3 (en) 2018-05-10

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