EP1462570B1 - Railway track having a grooved asymmetrical rail - Google Patents

Railway track having a grooved asymmetrical rail Download PDF

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Publication number
EP1462570B1
EP1462570B1 EP04290758.4A EP04290758A EP1462570B1 EP 1462570 B1 EP1462570 B1 EP 1462570B1 EP 04290758 A EP04290758 A EP 04290758A EP 1462570 B1 EP1462570 B1 EP 1462570B1
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EP
European Patent Office
Prior art keywords
rail
transverse
width
central axis
railway track
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EP04290758.4A
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German (de)
French (fr)
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EP1462570A1 (en
Inventor
Jacques Malod-Panisset
Jean Ehrsam
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Alstom Transport Technologies SAS
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Alstom Transport Technologies SAS
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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
    • E01B5/00—Rails; Guard rails; Distance-keeping means for them
    • E01B5/02—Rails
    • E01B5/04—Grooved rails

Definitions

  • the invention relates generally to railways, in particular for trams or trains, according to the preamble of claim 1.
  • Rails of this type are already known, for example from the document EP 1 217 126 . It is therefore known to arrange them in engravures and to fill the engravures with an elastic material, for example a resin, to fix and electrically isolate the rails and dampen the vibrations.
  • an elastic material for example a resin
  • the rails are supported on the resin and undergo the passage of the train or tramway forces vertical but also transverse.
  • the transverse forces tend to rotate the rail about a longitudinal axis, especially if, for acoustic or vibratory reasons, a soft resin is used. This rotation is particularly troublesome for guiding the train or tram.
  • the document EP-A-1217126 discloses a railroad for a guided vehicle, of the type comprising a concrete support and at least one pair of groove rails secured to the support. Each rail is at least partly inserted in a longitudinally arranged engravure in the support and is embedded in a fixing resin projecting laterally on each side of the rail.
  • the rails of this known railway are distinguished from earlier rails by a height less than 100 mm and a width, the height being less than 70% of said width.
  • the document FR-A-2,708,296 relates to a rail-track for guided vehicle lanes.
  • This rail-track comprises a mushroom forming in its lower part a running surface, a flap delimiting with the mushroom a groove, a pad having two wings, and a core connecting the mushroom and the flap with the pad.
  • This rail-track is distinguished from previous rails by the fact that the running surface of the mushroom has a rounded portion on each of its lateral edges and a flat central portion of a width greater than two thirds of the total width of the surface of the mushroom. rolling.
  • the document DE-C-70438 relates to a grooved rail with an asymmetrical head and a sole, the asymmetrical head and the sole being connected to one another by a core, one of the two lateral faces extending in a plane corresponding to the transverse median plane relative to to the width of the sole.
  • the present invention aims to overcome the defect mentioned above.
  • the railway according to the invention comprises the features which are set forth in the characterizing part of claim 1.
  • the grooved rail shown on the figure 1 extends in a longitudinal direction. It includes, as shown in figure 2 , a lower part forming a sole 10 of elongate shape in a transverse direction, an intermediate portion forming a core 20, and an upper part forming a first transverse side a mushroom 30 and a second transverse side opposite the first a bib 40, the flap 30 and the mushroom 40 defining between them a groove 50 open on an upper side.
  • An upper face 31 of the mushroom, flat or slightly curved, constitutes a running surface intended to receive the tread of the wheels of a railway vehicle.
  • the latch of these same wheels circulates in the groove 50 of the rail.
  • the core 20 is delimited on two opposite transverse sides by two concave lateral surfaces 21 of concavity facing outwards.
  • the rail rests on a flat bottom face 13 of the sole 10, parallel to the transverse and longitudinal directions.
  • the soleplate 10 is asymmetrical in a plane perpendicular to the longitudinal direction.
  • the rail presents, considered in section in a plane perpendicular to the longitudinal direction as on the figure 2 a central axis 61 extending perpendicularly to the transverse direction and dividing the soleplate 10 into a first portion 11 on the mushroom side 30 and a second portion 12 on the flap 40 side.
  • the first and second portions 11 and 12 respectively have first and second transverse widths, and the first width is greater than the second.
  • the first width is greater than the second by at least 4 hundredths of the total transverse width of the soleplate 10.
  • the first width is greater than the second of eight hundredths of the total transverse width of the soleplate 10.
  • the first width is chosen to be at least 5 millimeters higher than the second. Preferably, the first width greater than 10 millimeters is chosen for the second.
  • the central axis 61 can be defined in different ways.
  • the rail is inertial and has a core 20 which, seen in section in a plane perpendicular to the longitudinal direction, extends over a small transverse width about a main axis 64 itself perpendicular to the transverse direction.
  • the core 20 is of comparable height or greater than that of the upper part of the rail.
  • the central axis 61 then corresponding to the main axis 64.
  • the rail is non-inertial and has a web 20 much wider transversely than the inertial rail of the figure 2 . It can also be seen that this core 20 is of a height comparable to or smaller than that of the upper part of the rail.
  • the central axis 61 is the axis dividing the upper part of the rail so that the mushroom 30 is on one side of the central axis 61 and the groove 50 and the flap 40 on a second side of the central axis 61 opposite to the first.
  • the central axis 61 then substantially defines the point of junction between the groove 50 and the mushroom 30.
  • the mushroom 30 and the flap 40 are between first and second axes 62 and 63 mutually parallel and perpendicular to the transverse direction.
  • the mushroom 30 has a first outer lateral side 32 opposite the flap 40 and tangential to the first axis 62.
  • the flap 40 has a second lateral lateral side 41 opposite to the mushroom and tangential to the second axis 63.
  • the central axis 61 is then the median axis of the first and second axes 62 and 63.
  • the invention is particularly suitable for a rail having a height perpendicular to the transverse direction less than 100 millimeters, and a transverse width greater than its height.
  • the rail has a height of about 85 millimeters and a transverse width of about 120 millimeters, such as the rails illustrated in FIGS. Figures 3 and 4 .
  • the rail of figure 3 comprises a mushroom 30 whose upper face 31 has a transverse width of about 56 millimeters. Its first outer lateral side 32 has a height of about 30 millimeters. It is perpendicular to the lateral direction.
  • the groove 50 has a transverse width of 36 millimeters, measured at its opening, and a depth of about 46 millimeters. It has a V-shaped profile whose tip is rounded.
  • the flap 40 has an upper face of about 19 millimeters width and its second lateral lateral 41 has a height of about 46 millimeters. This side is substantially perpendicular to the transverse direction.
  • the height of the first and second parts 11 and 12 of the sole 10 is about 18 millimeters.
  • the first transverse width of the first portion is 66 millimeters and the second transverse width of the second portion is approximately 55 millimeters.
  • the second portion 12 of the sole 10 is plumb with the flap 40.
  • the first part 11 of the sole 10 protrudes transversely outwards with respect to the mushroom 30.
  • the rail of figure 4 is very close to that of the figure 3 and only the differences between the two rails will be described here.
  • the flap 40 is narrower than that of the figure 2 and has a transverse width of about 16 millimeters.
  • the second lateral lateral side 41 is inclined towards the outside of the rail from the corresponding concave lateral face 21 of the core 20.
  • the groove 50 has a transverse width of about 41 millimeters, measured at its opening. Its side facing the mushroom 30 is substantially perpendicular to the transverse direction.
  • the upper face 31 of the mushroom 30 has a slight inclination towards the groove 50.
  • the rail described above is applied to the constitution of a railway, according to the invention, for train or tramway.
  • This track typically comprises a concrete block 70, two parallel engravures 71 formed in the concrete block 70, two rails 72 of the type described above each arranged in a different engravure 71, and an elastic material 73 filling the engravures 71, around the rails 72 and below it.
  • the rails 72 are in continuous support on the elastic material 73 by their respective lower faces.
  • the rails 72 are oriented in the grooves so that the flaps 40 are on the inner side of the track, that is to say on the side of the other rail, and the mushrooms 30 on the outer side.
  • the rail undergoes the passage of a railway train a vertical effort, and in some cases, a transverse force.
  • This effort results for example from the strength of the wind blowing on the convoy. It is also particularly important in the curves of the track.
  • This transverse force is taken up essentially by the mushroom of one of the two parallel rails.
  • this fungus is that of the rail outside the curve.
  • the mushroom is that of the rail opposite to the direction from which the wind comes.
  • this transverse force creates a moment of rotation M around a center of rotation C located in the plane of the wheel of the convoy rolling on said rail.
  • This plane approximately corresponds to the central axis 61 of the rail described above.
  • the moment M tends to pivot the first portion 11 of the sole 10 in the direction of a depression in the surface supporting the rail, and tends to rotate the second portion 12 of the sole 10 in the direction of a detachment of the surface supporting the rail.
  • This surface in the embodiment of the figure 1 , is made of a flexible resin, offering a low resistance to the penetration of the first portion 11 of the sole 10.
  • the rail therefore tends to pivot about a longitudinal axis.
  • the rail of the invention has a sole of transverse width substantially identical to that of the rails of the prior art. This width is controlled by the need to take up and distribute the vertical forces experienced by the rail and by manufacturing constraints.
  • this width is distributed asymmetrically about the central axis, the first part of the sole, located on the mushroom side, being wider than the second side bib side.
  • the soleplate is symmetrical with respect to the central axis, the first and second parts being of the same width.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Train Traffic Observation, Control, And Security (AREA)

Description

L'invention concerne en général les voies ferrées, notamment pour tramways ou trains, selon le préambule de la revendication 1.The invention relates generally to railways, in particular for trams or trains, according to the preamble of claim 1.

Des rails de ce type sont déjà connus, par exemple du document EP 1 217 126 . Il est donc connu de les disposer dans des engravures et de remplir les engravures d'une matière élastique, par exemple une résine, pour fixer et isoler électriquement les rails et amortir les vibrations.Rails of this type are already known, for example from the document EP 1 217 126 . It is therefore known to arrange them in engravures and to fill the engravures with an elastic material, for example a resin, to fix and electrically isolate the rails and dampen the vibrations.

Les rails sont en appui sur la résine et subissent au passage du train ou du tramway des efforts verticaux mais également transversaux. Les efforts transversaux tendent à faire tourner le rail autour d'un axe longitudinal, en particulier si, pour des raisons acoustiques ou vibratoires, on utilise une résine souple. Cette rotation est particulièrement gênante pour le guidage du train ou du tramway.The rails are supported on the resin and undergo the passage of the train or tramway forces vertical but also transverse. The transverse forces tend to rotate the rail about a longitudinal axis, especially if, for acoustic or vibratory reasons, a soft resin is used. This rotation is particularly troublesome for guiding the train or tram.

Le document EP-A-1 217 126 décrit une voie ferrée pour véhicule guidé, du type comprenant un support en béton et au moins une paire de files de rails à gorge solidaires du support. Chaque rail est au moins en partie inséré dans une engravure ménagée longitudinalement dans le support et est noyé dans une résine de fixation débordant latéralement de chaque côté du rail. Les rails de cette voie ferrée connue se distinguent de rails antérieurs par une hauteur inférieure à 100 mm et une largeur, la hauteur étant inférieure à 70% de ladite largeur.The document EP-A-1217126 discloses a railroad for a guided vehicle, of the type comprising a concrete support and at least one pair of groove rails secured to the support. Each rail is at least partly inserted in a longitudinally arranged engravure in the support and is embedded in a fixing resin projecting laterally on each side of the rail. The rails of this known railway are distinguished from earlier rails by a height less than 100 mm and a width, the height being less than 70% of said width.

Le document FR-A-2 708 296 concerne un rail-piste pour voies de véhicules guidés. Ce rail-piste comprend un champignon formant à sa partie inférieure une surface de roulement, une bavette délimitant avec le champignon une gorge, un patin présentant deux ailes, et une âme reliant le champignon et la bavette avec le patin. Ce rail-piste se distingue de rails antérieurs par le fait que la surface de roulement du champignon comporte une partie arrondie sur chacun de ses bords latéraux et une partie centrale plane d'une largeur supérieure aux deux tiers de la largeur totale de la surface de roulement.The document FR-A-2,708,296 relates to a rail-track for guided vehicle lanes. This rail-track comprises a mushroom forming in its lower part a running surface, a flap delimiting with the mushroom a groove, a pad having two wings, and a core connecting the mushroom and the flap with the pad. This rail-track is distinguished from previous rails by the fact that the running surface of the mushroom has a rounded portion on each of its lateral edges and a flat central portion of a width greater than two thirds of the total width of the surface of the mushroom. rolling.

Le document DE-C-70438 concerne un rail à gorge avec une tête asymétrique et une semelle, la tête asymétrique et la semelle étant reliées l'une à l'autre par une âme dont une des deux faces latérales s'étend dans un plan correspondant au plan médian transversal par rapport à la largeur de la semelle.The document DE-C-70438 relates to a grooved rail with an asymmetrical head and a sole, the asymmetrical head and the sole being connected to one another by a core, one of the two lateral faces extending in a plane corresponding to the transverse median plane relative to to the width of the sole.

Dans ce contexte, la présente invention a pour but de pallier le défaut mentionné ci-dessus.In this context, the present invention aims to overcome the defect mentioned above.

Pour atteindre ce but, la voie ferrée selon l'invention comporte les caractéristiques qui sont énoncées dans la partie caractérisante de la revendication 1.To achieve this goal, the railway according to the invention comprises the features which are set forth in the characterizing part of claim 1.

L'invention sera définie davantage, dans des revendications dépendantes.The invention will be further defined in dependent claims.

D'autres caractéristiques et avantages de l'invention ressortiront clairement de la description qui en est faite ci-dessous, à titre indicatif et nullement limitatif, en référence aux figures annexées, parmi lesquelles :

  • la figure 1 est une vue perspective d'une voie ferrée selon l'invention, montrant en coupe dans un plan perpendiculaire à la direction longitudinale les rails de l'invention disposés dans les engravures,
  • la figure 2 est une vue du rail de la figure 1 en coupe perpendiculairement à la direction longitudinale, correspondant à un premier mode de réalisation de l'invention,
  • la figure 3 est une vue similaire à celle de la figure 2 pour un second mode de réalisation de l'invention, et
  • la figure 4 est une vue similaire à celle de la figure 2, pour une variante du second mode de réalisation.
Other characteristics and advantages of the invention will emerge clearly from the description which is given below, by way of indication and in no way limiting, with reference to the appended figures, among which:
  • the figure 1 is a perspective view of a railway track according to the invention, showing in section in a plane perpendicular to the longitudinal direction the rails of the invention arranged in the engravures,
  • the figure 2 is a rail view of the figure 1 in section perpendicular to the longitudinal direction, corresponding to a first embodiment of the invention,
  • the figure 3 is a view similar to that of the figure 2 for a second embodiment of the invention, and
  • the figure 4 is a view similar to that of the figure 2 for a variant of the second embodiment.

Le rail à gorge représenté sur la figure 1 s'étend suivant une direction longitudinale. 11 comprend, comme le montre la figure 2, une partie inférieure formant une semelle 10 de forme allongée dans une direction transversale, une partie intermédiaire formant une âme 20, et une partie supérieure formant d'un premier côté transversal un champignon 30 et d'un second côté transversal opposé au premier une bavette 40, la bavette 30 et le champignon 40 définissant entre eux une gorge 50 ouverte d'un côté supérieur.The grooved rail shown on the figure 1 extends in a longitudinal direction. It includes, as shown in figure 2 , a lower part forming a sole 10 of elongate shape in a transverse direction, an intermediate portion forming a core 20, and an upper part forming a first transverse side a mushroom 30 and a second transverse side opposite the first a bib 40, the flap 30 and the mushroom 40 defining between them a groove 50 open on an upper side.

Une face supérieure 31 du champignon, plane ou légèrement bombée, constitue une surface de roulement destinée à recevoir la table de roulement des roues d'un véhicule ferroviaire. Le mentonnet de ces mêmes roues circule dans la gorge 50 du rail.An upper face 31 of the mushroom, flat or slightly curved, constitutes a running surface intended to receive the tread of the wheels of a railway vehicle. The latch of these same wheels circulates in the groove 50 of the rail.

L'âme 20 est délimitée de deux côtés transversaux opposés par deux surfaces latérales 21 concaves, de concavité tournées vers l'extérieur.The core 20 is delimited on two opposite transverse sides by two concave lateral surfaces 21 of concavity facing outwards.

Le rail repose sur une face inférieure 13 plane de la semelle 10, parallèle aux directions transversale et longitudinale.The rail rests on a flat bottom face 13 of the sole 10, parallel to the transverse and longitudinal directions.

Selon l'invention, la semelle 10 est dissymétrique dans un plan perpendiculaire à la direction longitudinale.According to the invention, the soleplate 10 is asymmetrical in a plane perpendicular to the longitudinal direction.

Plus précisément, on remarquera que le rail présente, considéré en coupe dans un plan perpendiculaire à la direction longitudinale comme sur la figure 2, un axe central 61 s'étendant perpendiculairement à la direction transversale et divisant la semelle 10 en une première partie 11 du côté du champignon 30 et une seconde partie 12 du côté de la bavette 40.More precisely, it will be noted that the rail presents, considered in section in a plane perpendicular to the longitudinal direction as on the figure 2 a central axis 61 extending perpendicularly to the transverse direction and dividing the soleplate 10 into a first portion 11 on the mushroom side 30 and a second portion 12 on the flap 40 side.

Les première et seconde parties 11 et 12 présentent respectivement des première et seconde largeurs transversales, et la première largeur est supérieure à la seconde.The first and second portions 11 and 12 respectively have first and second transverse widths, and the first width is greater than the second.

La première largeur est supérieure à la seconde d'au moins 4 centièmes de la largeur transversale totale de la semelle 10. De préférence, la première largeur est supérieure à la seconde de huit centièmes de la largeur transversale totale de la semelle 10.The first width is greater than the second by at least 4 hundredths of the total transverse width of the soleplate 10. Preferably, the first width is greater than the second of eight hundredths of the total transverse width of the soleplate 10.

Pour les rails de tailles courantes, on choisit ainsi la première largeur supérieure d'au moins 5 millimètres à la seconde. De préférence, on choisit la première largeur supérieure de 10 millimètres à la seconde.For rails of common sizes, the first width is chosen to be at least 5 millimeters higher than the second. Preferably, the first width greater than 10 millimeters is chosen for the second.

L'axe central 61 peut être défini de différentes façons.The central axis 61 can be defined in different ways.

Dans un premier mode de réalisation représenté sur la figure 4, le rail est inertiel et présente une âme 20 qui, considérée en coupe dans un plan perpendiculaire à la direction longitudinale, s'étend sur une faible largeur transversale autour d'un axe principal 64 lui-même perpendiculaire à la direction transversale. L'âme 20 est de hauteur comparable ou supérieure à celle de la partie supérieure du rail.In a first embodiment shown on the figure 4 , the rail is inertial and has a core 20 which, seen in section in a plane perpendicular to the longitudinal direction, extends over a small transverse width about a main axis 64 itself perpendicular to the transverse direction. The core 20 is of comparable height or greater than that of the upper part of the rail.

L'axe central 61 correspondant alors à l'axe principal 64.The central axis 61 then corresponding to the main axis 64.

Dans un deuxième mode de réalisation, représenté sur les figures 3 et 4, le rail est non inertiel et présente une âme 20 beaucoup plus large transversalement que le rail inertiel de la figure 2. On voit également que cette âme 20 est de hauteur comparable ou inférieure à celle de la partie supérieure du rail.In a second embodiment, shown in the Figures 3 and 4 , the rail is non-inertial and has a web 20 much wider transversely than the inertial rail of the figure 2 . It can also be seen that this core 20 is of a height comparable to or smaller than that of the upper part of the rail.

Dans une première variante de réalisation, représentée sur la figure 4, l'axe central 61 est l'axe divisant la partie supérieure du rail de telle sorte que le champignon 30 se trouve d'un premier côté de l'axe central 61 et la gorge 50 et la bavette 40 d'un second côté de l'axe central 61 opposé au premier.In a first variant embodiment, represented on the figure 4 , the central axis 61 is the axis dividing the upper part of the rail so that the mushroom 30 is on one side of the central axis 61 and the groove 50 and the flap 40 on a second side of the central axis 61 opposite to the first.

L'axe central 61 définit alors sensiblement le point de jonction entre la gorge 50 et le champignon 30.The central axis 61 then substantially defines the point of junction between the groove 50 and the mushroom 30.

Dans une seconde variante de réalisation représentée sur la figure 3, le champignon 30 et la bavette 40 s'inscrivent entre des premiers et seconds axes 62 et 63 mutuellement parallèles et perpendiculaires à la direction transversale.In a second variant embodiment shown in the figure 3 , the mushroom 30 and the flap 40 are between first and second axes 62 and 63 mutually parallel and perpendicular to the transverse direction.

Le champignon 30 présente un premier côté latéral extérieur 32 opposé à la bavette 40 et tangent au premier axe 62.The mushroom 30 has a first outer lateral side 32 opposite the flap 40 and tangential to the first axis 62.

La bavette 40 présente un second côté latéral extérieur 41 opposé au champignon et tangent au second axe 63.The flap 40 has a second lateral lateral side 41 opposite to the mushroom and tangential to the second axis 63.

L'axe central 61 est alors l'axe médian des premier et second axes 62 et 63.The central axis 61 is then the median axis of the first and second axes 62 and 63.

L'invention est particulièrement adaptée à un rail présentant une hauteur perpendiculairement à la direction transversale inférieure à 100 millimètres, et une largeur transversale supérieure à sa hauteur.The invention is particularly suitable for a rail having a height perpendicular to the transverse direction less than 100 millimeters, and a transverse width greater than its height.

De préférence, le rail présente une hauteur de 85 millimètres environ et une largeur transversale de 120 millimètres environ, comme les rails illustrés sur les figures 3 et 4.Preferably, the rail has a height of about 85 millimeters and a transverse width of about 120 millimeters, such as the rails illustrated in FIGS. Figures 3 and 4 .

Le rail de la figure 3 comprend un champignon 30 dont la face supérieure 31 présente une largeur transversale de 56 millimètres environ. Son premier côté latéral extérieur 32 présente une hauteur de 30 millimètres environ. Il est perpendiculaire à la direction latérale.The rail of figure 3 comprises a mushroom 30 whose upper face 31 has a transverse width of about 56 millimeters. Its first outer lateral side 32 has a height of about 30 millimeters. It is perpendicular to the lateral direction.

La gorge 50 présente une largeur transversale de 36 millimètres, mesurée au niveau de son ouverture, et une profondeur de 46 millimètres environ. Elle présente un profil en V dont la pointe serait arrondie.The groove 50 has a transverse width of 36 millimeters, measured at its opening, and a depth of about 46 millimeters. It has a V-shaped profile whose tip is rounded.

La bavette 40 présente une face supérieure de largeur 19 millimètres environ et son second côté latéral extérieur 41 présente une hauteur de 46 millimètres environ. Ce côté est sensiblement perpendiculaire à la direction transversale.The flap 40 has an upper face of about 19 millimeters width and its second lateral lateral 41 has a height of about 46 millimeters. This side is substantially perpendicular to the transverse direction.

La hauteur des première et seconde parties 11 et 12 de la semelle 10 est de 18 millimètres environ. La première largeur transversale de la première partie est de 66 millimètres et la seconde largeur transversale de la seconde partie de 55 millimètres environ.The height of the first and second parts 11 and 12 of the sole 10 is about 18 millimeters. The first transverse width of the first portion is 66 millimeters and the second transverse width of the second portion is approximately 55 millimeters.

On notera que la seconde partie 12 de la semelle 10 est d'aplomb avec la bavette 40.Note that the second portion 12 of the sole 10 is plumb with the flap 40.

En revanche, la première partie 11 de la semelle 10 fait saillie transversalement vers l'extérieur par rapport au champignon 30.On the other hand, the first part 11 of the sole 10 protrudes transversely outwards with respect to the mushroom 30.

Le rail de la figure 4 est très proche de celui de la figure 3 et seules les différences entre les deux rails seront décrites ici.The rail of figure 4 is very close to that of the figure 3 and only the differences between the two rails will be described here.

La bavette 40 est plus étroite que celle de la figure 2, et présente une largeur transversale d'environ 16 millimètres. Le second côté latéral extérieur 41 est incliné vers l'extérieur du rail à partir de la face latérale concave 21 correspondante de l'âme 20.The flap 40 is narrower than that of the figure 2 and has a transverse width of about 16 millimeters. The second lateral lateral side 41 is inclined towards the outside of the rail from the corresponding concave lateral face 21 of the core 20.

La gorge 50 présente une largeur transversale de 41 millimètres environ, mesurée au niveau de son ouverture. Son côté tourné vers le champignon 30 est sensiblement perpendiculaire à la direction transversale.The groove 50 has a transverse width of about 41 millimeters, measured at its opening. Its side facing the mushroom 30 is substantially perpendicular to the transverse direction.

La face supérieure 31 du champignon 30 présente une légère inclinaison vers la gorge 50.The upper face 31 of the mushroom 30 has a slight inclination towards the groove 50.

Le rail décrit ci-dessus est appliqué à la constitution d'une voie ferrée, selon l'invention, pour train ou tramway. Cette voie comprend typiquement un massif de béton 70, deux engravures parallèles 71 ménagées dans le massif de béton 70, deux rails 72 du type décrit ci-dessus disposés chacun dans une engravure 71 différente, et un matériau élastique 73 remplissant les engravures 71, autour des rails 72 et en dessous de celui-ci. Les rails 72 sont en appui continu sur le matériau élastique 73 par leurs faces inférieures respectives.The rail described above is applied to the constitution of a railway, according to the invention, for train or tramway. This track typically comprises a concrete block 70, two parallel engravures 71 formed in the concrete block 70, two rails 72 of the type described above each arranged in a different engravure 71, and an elastic material 73 filling the engravures 71, around the rails 72 and below it. The rails 72 are in continuous support on the elastic material 73 by their respective lower faces.

Les rails 72 sont orientés dans les engravures de telle sorte que les bavettes 40 soient du côté intérieur de la voie, c'est-à-dire du côté de l'autre rail, et les champignons 30 du côté extérieur.The rails 72 are oriented in the grooves so that the flaps 40 are on the inner side of the track, that is to say on the side of the other rail, and the mushrooms 30 on the outer side.

On va maintenant expliquer l'effet obtenu du fait de la dissymétrie de la semelle du rail.We will now explain the effect obtained due to the dissymmetry of the rail sole.

Comme mentionné plus haut, le rail subit au passage d'un convoi ferroviaire un effort vertical, et, dans certains cas, un effort transversal. Cet effort résulte par exemple de la force du vent soufflant sur le convoi. Il est également particulièrement important dans les courbes de la voie.As mentioned above, the rail undergoes the passage of a railway train a vertical effort, and in some cases, a transverse force. This effort results for example from the strength of the wind blowing on the convoy. It is also particularly important in the curves of the track.

Cet effort transversal est repris essentiellement par le champignon d'un des deux rails parallèles. Dans le cas d'une courbe, ce champignon est celui du rail extérieur à la courbe. Pour un effort créé par le vent, le champignon est celui du rail opposé à la direction d'où vient le vent.This transverse force is taken up essentially by the mushroom of one of the two parallel rails. In the case of a curve, this fungus is that of the rail outside the curve. For an effort created by the wind, the mushroom is that of the rail opposite to the direction from which the wind comes.

Quand on considère le rail en coupe perpendiculairement à son axe longitudinal, cet effort transversal crée un moment de rotation M autour d'un centre de rotation C situé dans le plan de la roue du convoi roulant sur ledit rail.When considering the rail in section perpendicular to its longitudinal axis, this transverse force creates a moment of rotation M around a center of rotation C located in the plane of the wheel of the convoy rolling on said rail.

Ce plan, considéré en coupe, correspond approximativement à l'axe central 61 du rail décrit ci-dessus.This plane, considered in section, approximately corresponds to the central axis 61 of the rail described above.

Le moment M tend à faire pivoter la première partie 11 de la semelle 10 dans le sens d'un enfoncement dans la surface supportant le rail, et tend à faire pivoter la seconde partie 12 de la semelle 10 dans le sens d'un décollement de la surface supportant le rail.The moment M tends to pivot the first portion 11 of the sole 10 in the direction of a depression in the surface supporting the rail, and tends to rotate the second portion 12 of the sole 10 in the direction of a detachment of the surface supporting the rail.

Cette surface, dans l'exemple de réalisation de la figure 1, est constituée d'une résine souple, offrant une faible résistance à l'enfoncement de la première partie 11 de la semelle 10.This surface, in the embodiment of the figure 1 , is made of a flexible resin, offering a low resistance to the penetration of the first portion 11 of the sole 10.

Le rail tend donc à pivoter autour d'un axe longitudinal.The rail therefore tends to pivot about a longitudinal axis.

Le rail de l'invention présente une semelle de largeur transversale sensiblement identique à celle des rails de l'art antérieur. Cette largeur est commandée par la nécessité de reprendre et de répartir les efforts verticaux subis par le rail et par des contraintes de fabrication.The rail of the invention has a sole of transverse width substantially identical to that of the rails of the prior art. This width is controlled by the need to take up and distribute the vertical forces experienced by the rail and by manufacturing constraints.

En revanche, cette largeur est répartie de façon dissymétrique autour de l'axe central, la première partie de la semelle, située côté champignon, étant plus large que la seconde située côté bavette. Dans les rails de l'art antérieur, la semelle est symétrique par rapport à l'axe central, les première et seconde parties étant de même largeur.However, this width is distributed asymmetrically about the central axis, the first part of the sole, located on the mushroom side, being wider than the second side bib side. In the rails of the prior art, the soleplate is symmetrical with respect to the central axis, the first and second parts being of the same width.

Cet élargissement de la semelle côté champignon accroît la stabilité du rail et sa résistance au moment de rotation résultant des efforts transversaux. La première partie de la semelle étant en appui sur une plus grande longueur, elle peut plus difficilement s'enfoncer dans la couche de résine sous-jacente.This widening of the mushroom sole improves the stability of the rail and its rotational resistance resulting from the transverse forces. The first part of the sole being supported over a longer length, it can more difficult to sink into the underlying resin layer.

De manière surprenante, des essais ont montré qu'une différence de largeur de 10 millimètres permettait d'obtenir un effet de stabilisation très satisfaisant, une différence de 5 millimètres étant jugée en conséquence suffisante pour obtenir un effet significatif.Surprisingly, tests have shown that a difference in width of 10 millimeters makes it possible to obtain a very satisfactory stabilizing effect, a difference of 5 millimeters being judged accordingly sufficient to obtain a significant effect.

On peut alors, avec des rails de ce type, utiliser des résines plus souples que dans l'art antérieur, possédant une meilleure capacité d'amortissement des vibrations.It is then possible, with rails of this type, to use softer resins than in the prior art, having a better capacity for damping vibrations.

Claims (5)

  1. A railway track for moving vehicles such as trains or trams, comprising a support (70) made from a rigid material and a pair of grooved rails, whereof each of the rails (72) is positioned in a notch (71) arranged in the support (70) while being placed in a resilient material (73) filling the notch, each rail comprising a lower portion forming a sleeper (10) with an elongate shape in a transverse direction, an intermediate portion forming a core (20) and an upper portion forming, on a first transverse side, a head (30), and on a second transverse side opposite the first, an apron (40), the apron (40) and the head (30) defining a groove (50) between them, characterized in that the sleeper (10), considered in section in a plane perpendicular to the longitudinal axis, is asymmetrical relative to a central axis (61) and perpendicular to the transverse direction, the central axis (61) being the median axis of a first axis (62) tangent to a first outer lateral side (32) of the head (30) and a second axis (63) tangent to a second outer lateral side (41) of the apron (40), the first and second axes (62, 63) being parallel to one another and perpendicular to the transverse direction, the central axis (61) dividing the sleeper (10) into a first portion (11) on the head (30) side and a second portion (12) on the apron (40) side, the width of the first portion (11) being greater than the width of the second portion (12) in order to increase the resistance of the rail during the rotation (M) resulting from the transverse forces that the rail experiences upon the passage of a train.
  2. The railway track according to claim 1, characterized in that the first width of the rail is greater than the second by at least 4 hundredths of the total transverse width of the sleeper (10).
  3. The railway track according to claim 1 or 2, characterized in that the first width of the rail is greater than the second by at least 5 millimeters.
  4. The railway track according to any one of claims 1 to 3, characterized in that the central axis (61) divides the upper portion of the rail such that the head (30) of the rail is located on a first side of the central axis (61), and the groove (50) and the apron (40) of the rail on a second side of the central axis (61) opposite the first.
  5. The railway track according to any one of the preceding claims, characterized in that the rail has a height perpendicular to the transverse direction of less than 100 millimeters, and a transverse width greater than its height.
EP04290758.4A 2003-03-25 2004-03-22 Railway track having a grooved asymmetrical rail Expired - Lifetime EP1462570B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0303624A FR2852978B1 (en) 2003-03-25 2003-03-25 DISSYMMETRIC SOLE RAIL AND APPLICATION TO THE CONSTITUTION OF A RAILWAY
FR0303624 2003-03-25

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Publication Number Publication Date
EP1462570A1 EP1462570A1 (en) 2004-09-29
EP1462570B1 true EP1462570B1 (en) 2019-06-05

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EP (1) EP1462570B1 (en)
ES (1) ES2744205T3 (en)
FR (1) FR2852978B1 (en)
PT (1) PT1462570T (en)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT500820B1 (en) * 2004-09-29 2007-04-15 Voestalpine Schienen Gmbh RAILING RAIL FOR A RAILROAD
DE102004054794B3 (en) * 2004-11-12 2006-04-20 Thyssenkrupp Gft Gleistechnik Gmbh grooved rail
FR2922229B1 (en) * 2007-10-15 2012-12-07 Vossloh Cogifer GLOVES RAILS
EP2298991B1 (en) 2009-09-18 2015-05-20 Angst und Pfister AG Chamfer rail with protective inlay
FR2990704B1 (en) 2012-05-16 2015-06-05 Etf Eurovia Travaux Ferroviaires METHOD FOR CONSTRUCTING A RAILWAY
DE102012106138B4 (en) 2012-07-09 2016-09-22 Dätwyler Sealing Technologies Deutschland Gmbh rail arrangement
DE102017111298A1 (en) 2017-05-23 2018-11-29 Dätwyler Sealing Technologies Deutschland Gmbh Rail arrangement for rail vehicles with flange wheels
DE102018121333A1 (en) * 2018-08-31 2020-03-05 Joachim Süss Track construction and running rail
PL3617404T3 (en) * 2018-08-31 2022-09-19 Süss, Joachim Rail and track structure with the rail
US20220228627A1 (en) * 2021-01-21 2022-07-21 Flexspace 360 Universal rail for mobile racking

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE535754C (en) * 1928-12-18 1931-10-15 Kuehn Gottfried Composite grooved rail
FR2827879A1 (en) * 2001-07-26 2003-01-31 Cogifer Rail track grooved rail comprises mushroom in upper part with convex running surface, groove separating flange from mushroom and base having plane support surface

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE70438C (en) * georgs - marien Bergwerks- & Hüttenverein in Osnabrück Railway superstructure made of rails, one of which only coincides with the plane of symmetry of the rail foot
FR2708296B1 (en) * 1993-07-27 1995-10-20 Cogifer Rail-track for tracks of guided vehicles.
FR2816967B1 (en) * 2000-11-23 2004-09-17 Cogifer Tf RAIL TRACK FOR GUIDED VEHICLE AND APPARATUS HAVING SUCH A RAIL TRACK

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE535754C (en) * 1928-12-18 1931-10-15 Kuehn Gottfried Composite grooved rail
FR2827879A1 (en) * 2001-07-26 2003-01-31 Cogifer Rail track grooved rail comprises mushroom in upper part with convex running surface, groove separating flange from mushroom and base having plane support surface

Also Published As

Publication number Publication date
EP1462570A1 (en) 2004-09-29
FR2852978A1 (en) 2004-10-01
FR2852978B1 (en) 2006-08-25
ES2744205T3 (en) 2020-02-24
PT1462570T (en) 2019-09-19

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