EP2811071B1 - Dalle de rails avec tapis élastique pour un chemin de fer flottant - Google Patents

Dalle de rails avec tapis élastique pour un chemin de fer flottant Download PDF

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Publication number
EP2811071B1
EP2811071B1 EP14171123.4A EP14171123A EP2811071B1 EP 2811071 B1 EP2811071 B1 EP 2811071B1 EP 14171123 A EP14171123 A EP 14171123A EP 2811071 B1 EP2811071 B1 EP 2811071B1
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EP
European Patent Office
Prior art keywords
mat
lateral
rail slab
parts
elastic
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
EP14171123.4A
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German (de)
English (en)
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EP2811071A1 (fr
Inventor
Patrick Carels
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Pandrol Cdm Track Nv
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Pandrol Cdm Track Nv
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Application filed by Pandrol Cdm Track Nv filed Critical Pandrol Cdm Track Nv
Publication of EP2811071A1 publication Critical patent/EP2811071A1/fr
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Classifications

    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01B—PERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
    • E01B21/00—Track superstructure adapted for tramways in paved streets
    • E01B21/02—Special supporting means; Draining of rails
    • 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
    • E01B19/003—Means for reducing the development or propagation 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
    • E01B3/00—Transverse or longitudinal sleepers; Other means resting directly on the ballastway for supporting rails
    • E01B3/28—Transverse or longitudinal sleepers; Other means resting directly on the ballastway for supporting rails made from concrete or from natural or artificial stone
    • E01B3/40—Slabs; Blocks; Pot sleepers; Fastening tie-rods to them

Definitions

  • the invention concerns a rail slab with an elastic mat for a floating railway, whereby a top side of the rail slab is provided for fixing rails of a railway to, whereby the elastic mat contains a base mat that fits against a bottom side of the rail slab and on which said rail slab rests, whereby the elastic mat contains two opposed standing lateral mat parts which each fit against a lateral side of the rail slab.
  • floating railway tracks are made by placing a vibration-absorbing elastic mat between the rail slab and the substructure on which it rests. Further, lateral elastic mats are also placed on the sides of the rail slab between the slab and the adjacent fixed superstructure.
  • German patent application No. DE4439816A discloses a rail slab according to the preamble of claim 1 and a method according to the preamble of claim 10, in particular a process for producing a concrete moulded body that carries the rails of a railway track and has a bearing outer surface provided with an elastic layer, which adheres well to the concrete surface.
  • the invention aims to remedy these disadvantages by means of a floating railway slab with an elastic mat and a method for manufacturing a floating railway track, as in the claims appended hereto, whereby they make it possible to obtain sufficient vibration damping in a simple manner without the aforesaid disadvantages.
  • the standing lateral mat parts have a cross section which widens as of the bottom of the rail slab to the upper side of the rail slab.
  • the lateral mat parts will be relieved when the base mat is being pressed down, for example due to a load on the rail slab caused by a railway vehicle.
  • the cross section of the rail slab further preferably narrows from the bottom to the top side.
  • the lateral elastic mat parts are placed opposite each other with inner sides that incline towards each other, so that when the base mat is being pressed down, for example due to a load on the rail slab by a railway vehicle, the lateral mat parts will be relieved as the stress on these parts is reduced.
  • the invention generally concerns a rail slab with an elastic mat for a floating railway track whereby performance losses of the vibration-absorbing qualities are compensated.
  • the top side of the rail slab is hereby provided to fix rails of a railway to, and the rails are preferably continuously supported by the rail slab.
  • the rail slab further rests with a bottom side on an elastic mat.
  • the specific construction of the floating railway slab with the elastic mat according to the invention ensures an at least partial compensation of a reduced vibration damping which is due, for example, to the rigidity of the lateral mat parts.
  • Said lateral elastic mat parts are squeezed between the rail slab and the adjacent building material.
  • the tension on the lateral mat parts will be reduced when the base mat is pressed due to a vertical load of the rail slab.
  • the mat parts will be preferably relieved more on the top side than on the bottom side, as these mat parts widen from the bottom side of the rail slab to the top side of the rail slab.
  • the base mat due to a continuous load on the base mat, a commonly called 'creep' of the base mat takes place, and the rail slab sinks in the floating railway track. Due to an oblique shape of the lateral mat parts and the rail slab, the outer sides of the lateral mat parts may hereby come off the lateral walls. As a result, the lateral mat parts are relieved, which enhances the lateral flexibility.
  • a first embodiment of a floating railway according to the invention is represented in figure 1 .
  • the floating railway is formed here among others of a massive concrete rail slab 1 and an elastic mat.
  • the rail slab 1 has a thickness G which amounts to for example 400 mm to 1000 mm, and the elastic mat has thicknesses A, B and C which amount to for example 20 mm to 30 mm.
  • This elastic mat is made of an elastomer such as recycled rubber and it is formed of a base mat 3 and two connecting lateral mat parts 2.
  • the rail slab 1 rests with a bottom side 6 on the base mat 3 which lies on a substructure 11.
  • the top side 4 of the rail slab 1 is provided to fix the rails 5 of the railway to.
  • grooves are provided in said top side 4 in which the rails 5 are fixed by means of for example an elastic jacket.
  • the rails 5 are hereby continuously supported by the elastic jacket and the rail slab 1.
  • the rail slab 1 has bevelled lateral sides 7 onto which the lateral elastic mat parts 2 connect.
  • These lateral elastic mat parts 2 have an inner side 9 which fits against the rail slab 1 and an outer side 8 which is perpendicular to the base mat 3.
  • the lateral mat parts 2 form two opposite standing mat parts 2.
  • These mat parts 2 have a cross section which widens as of the bottom side 6 of the rail slab 1 to the top side 4 of the rail slab 1.
  • the cross section of the rail slab 1 narrows from the bottom side 6 to the top side 4.
  • the top side 4 and the bottom side 6 are approximately parallel, so that the cross section of the rail slab 1 is trapezoidal.
  • the standing lateral mat parts 2 thus have a thickness A on the top side 2" which is larger than the thickness B of these mats 2 on the bottom side 2'.
  • the thickness B on the bottom side 2' of the mat 2 is about 66 % of the thickness A on the top side 2" of the mat 2. More specifically, the thickness B amounts to for example 20 mm, whereas the thickness A amounts to for example 30 mm.
  • a floating railway track as in the above-described first embodiment of the invention is manufactured in a concrete case.
  • This concrete case is formed of a fixed concrete bottom or substructure 11 with two opposite standing concrete walls 12. These standing walls 12, according to this method, stand perpendicular to the substructure 11 and extend in the longitudinal direction of the railway.
  • an elastic base mat 3 is put on the substructure 11 between the walls 12.
  • standing lateral elastic mat parts 2 are placed against the opposite standing walls 12 lateral elastic mat parts 2, with the outer sides 8 of the lateral mat parts 2 connecting to the walls 12.
  • these mat parts 2 are placed loosely against the walls 12.
  • the inner sides 9 of the opposed standing lateral mat parts 2 hereby incline towards each other.
  • the bottom side 2' of the lateral mat parts 2 hereby abuts on the edge of the base mat 3.
  • the entire inner side of the concrete case is lined with the elastic mat formed of the base mat 3 and the lateral mat parts 2.
  • the lateral mat parts 2 have a cross section which widens as of the bottom side 2' up to the opposite top side 2" of the lateral mat parts 2, there will be a free space between said mat parts 2 having a trapezoidal cross section and which narrows as of the base mat 3 to the top side 2" of the lateral mat parts 2.
  • This free space is filled with a curing building material such as concrete.
  • said building material is cast on the base mat 3, between the opposed extending mat parts 2.
  • the curing building material can be cast in one or several layers. After it has cured, the material thus forms a rail slab 1 which rests on the base mat 3. Consequently, the rail slab 1 is surrounded by an elastic mat, as a result of which there is no direct contact between the rail slab 1 and the concrete case.
  • rails 5 which are preferably provided with an elastic jacket are embedded in the curing building material, such that these rails are fixed in a groove in the rail slab.
  • This can be obtained with a "top-down” method known as such which is applied for railways with embedded rails.
  • the outer sides 8 of the lateral mat parts 2 are provided with a relief, as a result of which the contact surface between the standing walls 12 and the lateral mat parts 2 is reduced.
  • This relief is an unevenness of the surface of the outer side 8 of the lateral mat parts 2 and it may consist of indentations and/or standing elements.
  • the walls 12 are preferably flat. Thus, open spaces are created between the mat parts 2 and the walls 12.
  • Such a relief is advantageous in that, when the rail slab 1 is loaded as a railway vehicle runs over the railway, the lateral mat parts 2 will easily come off the standing walls 12, such that these mat parts 2 affect the vertical rigidity of the floating railway track only to a minimal extent.
  • the concrete standing walls 12 consist of a temporary formwork. This formwork is removed after the rail slab 1 has been made or after the curing building material of the rail slab 1 has cured. A permanent surrounding material, such as for example crushed stone or concrete, is then put all around the rail slab 1 against the outer side 8 of the lateral mat parts 2.
  • the rails 5 are fixed on top of the rail slab 1 instead of in the above-described grooves.
  • the base mat 3 is placed on a fixed substructure 11 on which the rail slab 1 is subsequently placed.
  • the lateral mat parts 2 are then placed against the lateral sides of the rail slab 1, after which a curing building material is applied to the mat parts 2.
  • a second embodiment according to the invention is represented in figure 2 and mainly differs from the first embodiment in that the cross section of the lateral side 7 of the rail slab 1 has a non-linear profile.
  • the lateral side 7 has an angle with a vertical 14 which is larger on the top side 4 of the rail slab 1 than on the bottom side 6 of the rail slab 1.
  • this angle is for example 0.2° to 0.4°, and for a lower part of this lateral side 7, said angle is for example 0.8° to 2.2°.
  • the upper part of the lateral side 7 has a height which is for example 25% to 50% of the total height of the lateral side 7 or also of the height of the rail slab 1.
  • the rail slab 1 of the second embodiment is cast in three different layers, whereby these layers are formed of a building material such as for example concrete.
  • the first lower concrete layer 1' has a thickness D which amounts to for example 150 mm to 300 mm
  • the second, connecting concrete layer 1" has a thickness E which amounts to for example 150 mm to 250 mm
  • a third top concrete layer 1"' has a thickness F which amounts to for example 150 mm to 200 mm.
  • This top layer 1"' can also be made, just as the other layers, of another road surfacing material.
  • the lateral sides of the first concrete layer 1' and the second concrete layer 1" are situated in line with each other, in contrast to the lateral side of the top concrete layer 1"'. Consequently, the lateral side 7 of the rail slab 1 exhibits a dent between the third and the second concrete layer 1"' and 1" respectively, as a result of which the latter has a non-linear profile in the vertical direction.
  • the outer sides 8 of the lateral mat parts 2 in this embodiment preferably have a relief 15 at the third and second concrete layer 1'" and 1" respectively.
  • This relief 15 is an uneven surface which may consist for example of a corrugated surface or of standing studs.
  • a third embodiment according to the invention is represented in figure 3 and mainly differs from the second embodiment in that the standing wall 12 of the concrete case forms an angle in relation to the vertical 14 on the flat substructure 11.
  • the standing walls 12 are inclined towards each other in this case.
  • the cross section of the concrete case is larger on the bottom side 6 of the rail slab 1 than on the top side 4 of the rail slab 1.
  • the elastic mat may consist of a base mat and two standing lateral sides which form a whole and are made of a single piece of elastomer material.
  • the elastic mat may also consist of several parts that are glued together.
  • the elastic mat can be made of recycled rubber or other elastomers known to a person skilled in the art.
  • the cross section of the lateral mat parts may have various forms whereby it widens at least partly from the bottom side to the top side.
  • the standing walls of the concrete case and/or the rail slab can also be provided with an unevenness such as for example vertical ribs.
  • the opposing standing walls of the concrete case may also be inclined away from one another, so that the cross section of the space in the concrete case widens from the bottom side to the top side.
  • the rail slab can be built out of concrete but also of other materials that a person skilled in the art deems suitable, or combinations thereof, such as for example asphalt.
  • the above-described concrete case can also be made of other suitable building materials.
  • the outer side and/or the inner side of the lateral mat parts may feature a relief that is at least partially uneven, as a result of which the contact surface with the standing walls and/or the lateral sides of the rail slab is reduced.

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

Claims (15)

  1. Dalle (1) de rails avec un tapis élastique (2, 3) pour un chemin de fer flottant, laquelle dalle (1) de rails comporte un côté supérieur (4) et un côté inférieur (6), moyennant quoi des rails (5) sont fixés au côté supérieur (4) de la dalle (1) de rails, moyennant quoi le tapis élastique (2, 3) contient un tapis de base (3) qui s'ajuste contre le côté inférieur (6) de la dalle (1) de rails et sur lequel ladite dalle (1) de rails repose, moyennant quoi le tapis élastique (2, 3) contient en outre deux parties de tapis latérales verticales opposées (2) qui s'ajustent chacune avec un côté intérieur (9) contre un côté latéral (7) de la dalle (1) de rails et s'étendent parallèlement aux rails (5), caractérisée en ce que les parties de tapis latérales verticales (2) ont une section transversale qui s'élargit depuis le côté inférieur (6) de la dalle (1) de rails vers le côté supérieur (4) de la dalle (1) de rails.
  2. Dalle de rails selon la revendication 1, moyennant quoi la section transversale de la dalle (1) de rails rétrécit depuis le côté inférieur (6) vers le côté supérieur (4).
  3. Dalle de rails selon l'une quelconque des revendications 1 ou 2, moyennant quoi un côté extérieur (8) s'étendant à l'opposé du côté intérieur (9) de chacune des parties de tapis latérales verticales (2) est perpendiculaire au tapis de base (3).
  4. Dalle de rails selon l'une quelconque des revendications 1 à 3, moyennant quoi les parties de tapis latérales verticales (2) s'ajustent contre le tapis de base (3) et moyennant quoi, de préférence, les parties de tapis latérales verticales (2) et le tapis de base (3) forment un ensemble continu.
  5. Dalle de rails selon l'une quelconque des revendications 1 à 4, moyennant quoi le côté extérieur (8) et/ou le côté intérieur (9) des parties de tapis latérales (2) présentent un relief qui est au moins partiellement inégal.
  6. Dalle de rails selon l'une quelconque des revendications 1 à 5, moyennant quoi le tapis de base (3) repose sur une sous-structure (11) et moyennant quoi des parois verticales (12) se tiennent verticalement sur cette sous-structure (11) formant une ossature et/ou une coque en béton qui s'ajustent contre le côté extérieur (8) des parties de tapis latérales (2).
  7. Dalle de rails selon la revendication 6, moyennant quoi le côté extérieur (8) des parties de tapis latérales (2) s'ajuste librement contre les parois verticales (12).
  8. Dalle de rails selon la revendication 6 ou 7, moyennant quoi le côté extérieur (8) et/ou le côté intérieur (9) des parties de tapis latérales (2) sont inégaux, à la suite de quoi la surface de contact entre les parties de tapis latérales (2) et les parois verticales (12) et/ou la dalle (1) de rails est réduite.
  9. Dalle de rails selon l'une quelconque des revendications 1 à 8, moyennant quoi le côté supérieur (4) de la dalle (1) de rails est pourvu d'au moins une rainure (10) pour y fixer les rails (5) d'un chemin de fer.
  10. Procédé pour la construction d'un chemin de fer avec une dalle (1) de chemin de fer flottant, moyennant quoi une ossature est fabriquée avec une sous-structure (11) dotée de deux parois verticales s'étendant à l'opposé (12) sur celle-ci, moyennant quoi un tapis de base élastique (3) est placé sur la sous-structure (11) et des parties de tapis élastique latérales (2) sont placées à l'opposé les unes des autres contre les parois verticales (12) de l'ossature s'étendant à l'opposé les unes des autres, moyennant quoi un côté inférieur (2') des parties de tapis élastique latérales (2) s'ajuste contre le tapis de base élastique (3), moyennant quoi un matériau de construction durcissant est coulé sur le tapis de base (3) entre les parois verticales (12) de l'ossature, de telle sorte que les parties de tapis élastique latérales (2) s'étendent entre l'ossature et le matériau de construction durcissant, moyennant quoi le matériau de construction durcit et forme la dalle (1) de chemin de fer flottant qui repose sur le tapis de base (3), caractérisé en ce que les parties de tapis élastique latérales (2) sont placées à l'opposé les unes des autres avec une épaisseur (A, B) qui augmente à partir du côté inférieur (2') des parties de tapis élastique latérales (2) vers un côté supérieur opposé (2").
  11. Procédé selon la revendication 10, moyennant quoi les parties de tapis élastique latérales (2) sont prévues avec leurs côtés intérieurs (9) inclinés les uns vers les autres.
  12. Procédé selon la revendication 10 ou 11, moyennant quoi une coque en béton est fabriquée, laquelle forme la sous-structure (11) et les parois verticales (12) précitées de l'ossature.
  13. Procédé selon l'une quelconque des revendications 10 à 12, moyennant quoi la sous-structure (11) et les parois verticales (12) de l'ossature sont recouvertes d'un tapis élastique d'un seul tenant sur un côté intérieur, lequel tapis comprend le tapis de base élastique (3) et les parties de tapis latérales (2).
  14. Procédé selon l'une quelconque des revendications 10 à 13, moyennant quoi les parties de tapis latérales (2) sont placées s'ajustant librement contre les parois verticales (12), moyennant quoi une surface de contact est formée entre un côté extérieur (8) des parties de tapis latérales (2) et les parois verticales (12) et moyennant quoi, de préférence, cette surface de contact est réduite quand au moins une partie du côté extérieur (8) des parties de tapis latérales (2) est pourvue d'un relief (15) formé d'inégalités.
  15. Procédé selon l'une quelconque des revendications 10 à 14, moyennant quoi les parois verticales (12) de l'ossature sont placées perpendiculairement à la sous-structure (11) et les parties de tapis latérales (2) sont placées verticalement contre les parois verticales (12) avec un côté extérieur (8) ou moyennant quoi les parois verticales (12) sont créées pour s'incliner les unes vers les autres.
EP14171123.4A 2013-06-04 2014-06-04 Dalle de rails avec tapis élastique pour un chemin de fer flottant Active EP2811071B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
BE2013/0394A BE1022020B1 (nl) 2013-06-04 2013-06-04 Elastische mat voor een zwevende spoorweg

Publications (2)

Publication Number Publication Date
EP2811071A1 EP2811071A1 (fr) 2014-12-10
EP2811071B1 true EP2811071B1 (fr) 2016-09-21

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Application Number Title Priority Date Filing Date
EP14171123.4A Active EP2811071B1 (fr) 2013-06-04 2014-06-04 Dalle de rails avec tapis élastique pour un chemin de fer flottant

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EP (1) EP2811071B1 (fr)
BE (1) BE1022020B1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109056429B (zh) * 2018-09-06 2019-12-03 西南交通大学 浮置板轨道基频半主动减振方法与装置
CN117090082A (zh) * 2023-08-30 2023-11-21 北京市市政工程设计研究总院有限公司 减振轨道组件、减振轨道结构及其施工、维护方法

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4439816C2 (de) * 1994-11-08 1998-08-27 Contitech Transportbandsysteme Verfahren zur Herstellung einer elastisch lagerbaren Gleistragplatte
EP2014831A1 (fr) * 2007-07-12 2009-01-14 Feronia S.A. Module préfabriqué pour rail de train et procédé de fabrication de ce module
DE102008046901A1 (de) * 2008-09-11 2010-03-18 Strabag Ag Streustromisolierter Fahrbahnweg für schienengebundene Fahrzeuge
AT10905U1 (de) * 2008-09-19 2009-12-15 Gmundner Fertigteile Gmbh Gleistragplatte

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BE1022020B1 (nl) 2016-02-04

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