EP1251204A2 - Vibration insulating system for railway tracks - Google Patents

Vibration insulating system for railway tracks Download PDF

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Publication number
EP1251204A2
EP1251204A2 EP02075894A EP02075894A EP1251204A2 EP 1251204 A2 EP1251204 A2 EP 1251204A2 EP 02075894 A EP02075894 A EP 02075894A EP 02075894 A EP02075894 A EP 02075894A EP 1251204 A2 EP1251204 A2 EP 1251204A2
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EP
European Patent Office
Prior art keywords
mat
studs
slab
stiffness
resilient
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.)
Granted
Application number
EP02075894A
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German (de)
French (fr)
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EP1251204A3 (en
EP1251204B1 (en
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.)
Acousystem Ae Responsabilite Immeu Ltee Ste
Vossloh Infrastructure Services
Composite Damping Material NV CDM
Original Assignee
Composite Damping Material NV CDM
Acousystem A Responsabilite Immeuble International Ltee Ste
Cogifer Tf SA
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Composite Damping Material NV CDM, Acousystem A Responsabilite Immeuble International Ltee Ste, Cogifer Tf SA filed Critical Composite Damping Material NV CDM
Publication of EP1251204A2 publication Critical patent/EP1251204A2/en
Publication of EP1251204A3 publication Critical patent/EP1251204A3/en
Application granted granted Critical
Publication of EP1251204B1 publication Critical patent/EP1251204B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01B—PERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
    • E01B2/00—General structure of permanent way
    • E01B2/003—Arrangement of tracks on bridges or in tunnels
    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01B—PERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
    • E01B1/00—Ballastway; Other means for supporting the sleepers or the track; Drainage of the ballastway
    • E01B1/002—Ballastless track, e.g. concrete slab trackway, or with asphalt layers
    • E01B1/004—Ballastless track, e.g. concrete slab trackway, or with asphalt layers with prefabricated elements embedded in fresh concrete or asphalt
    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01B—PERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
    • E01B2204/00—Characteristics of the track and its foundations
    • E01B2204/10—Making longitudinal or transverse sleepers or slabs in situ or embedding them

Definitions

  • the invention relates to a vibration isolation system for a track railway on which a vehicle, in particular a train, metro or tram, can travel, comprising an inertia slab, on which rails are mounted, the inertia slab resting on an anti-vibration bed comprising a resilient mat.
  • the invention is in particular relating to a floating track vis-à-vis its environment.
  • the slab of inertia is concrete which is poured on a continuous mat made of synthetic foam so to isolate the vibrations created by the passage of the abovementioned vehicles on the rails opposite the environment.
  • the known technique does not give satisfactory results in places where the railway is located on a basement which has a discontinuous stiffness, for example, at the transition to a bridge or at the place where one passes from a non-isolated zone towards a zone isolated.
  • the object of the invention is to present an insulation system which makes it possible to adjust the stiffness of the anti-vibration bed and thus avoid the railroad having areas with a sudden transition between places of different stiffness.
  • the system according to the invention makes it possible to adjust the stiffness of the anti-vibration bed in the curvature of a railway depending on the loads of a vehicle.
  • the resilient mat is provided with recesses in at least some of which pads of a resilient material are inserted in a so as to be able to adjust the stiffness of the anti-vibration bed.
  • the aforementioned studs are mounted on a panel which extends between the inertia slab and the mat above resilient.
  • the inertia slab is bordered laterally by a wall comprising shock absorbing panels which are joined to the anti-vibration bed.
  • an adjustment piece is provided at the upper end of the panels shock absorbers so that the height of the above-mentioned wall can be adjusted.
  • the invention also relates to a method of insulating a railroad track in order to decrease the propagation of vibrations, according to which a slab of inertia, bearing rails of the railway, is placed on an anti-vibration bed comprising a resilient mat, in which studs are inserted into recesses provided in said resilient mat in such a way as to regulate the stiffness of the anti-vibration bed.
  • Figure 1 is a schematic vertical sectional view of a railroad track with the insulation system according to the invention.
  • Figure 2 is a schematic plan view of a panel on which studs can be fixed, according to the invention.
  • the present invention relates to a railway floating vis-à-vis its basement.
  • a railroad by example, in a street
  • an earthworks is executed according to the planned route of this way railway.
  • a formwork preferably in reinforced concrete, is built on the bottom of which a resilient carpet of synthetic foam is laid, such as a closed cell polyethylene foam.
  • This resilient mat has recesses regularly distributed on its surface in which support blocks or studs in a resilient material are inserted.
  • the solidified inertia slab rests on an anti-vibration bed which is formed by resilient mat and studs.
  • the stiffness of the anti-vibration bed is therefore determined by the stiffness of the resilient mat and that of the studs.
  • the stiffness of the studs is, for example, chosen according to the subsoil on which the railroad rests. In particular, in a transition zone towards a bridge the stiffness of the studs is gradually changed in order to obtain a gradual change in the stiffness of the anti-vibration bed towards the deck.
  • the studs are, for example, formed of rubber or a material composite, according to the desired stiffness.
  • the height of the studs are higher than the thickness of the mat so that the upper part of the studs is enveloped by the concrete of the inertia slab. In such a way, the studs are fixed opposite this slab of inertia.
  • Figure 1 is a schematic cross section of a railroad track with an insulation system according to a particular embodiment of the invention.
  • a concrete formwork 1 is represented which was built in a street 2.
  • This formwork 1 extends along the path of a railroad track comprising two parallel rails 3 and 4.
  • a resilient mat 6 having recesses 7 regularly spaced one on the other is placed on the bottom 5 of the formwork 1.
  • a panel 8, extending over the belt 6, is provided with studs 9 on its face which is directed towards the mat 6 in such a way that the studs 9 are inserted into the recesses 7 of the mat 6.
  • an anti-vibration bed is formed on which a slab rests inertia 10.
  • panel 8 it is not essential that all of the recesses 7 contain a pad 9.
  • the stiffness of the anti-vibration bed can be adjusted by omitting studs 9 in certain recesses 7. By gradually increasing the number of studs 9 per unit area in a determined direction in the recesses 7 of the mat 6, a gradual increase in the stiffness of the anti-vibration bed is obtained.
  • the stiffness of the pads 9 is greater than that of the carpet 6.
  • k plot in which k carpet represents the stiffness of the carpet 6 per m 2 , k plot represents the stiffness of a plot 9 and n is the number of pads 9 per m 2 .
  • the inertia slab 10 is bordered laterally by walls formed by damping panels 11 which are joined to the anti-vibration bed and, in particular, to the carpet resilient 6.
  • the damping panels 11 are fixed to the panel 8 carrying the studs 9 at by means of a steel angle 12 ensuring that these panels are positioned in square.
  • the damping panels 11 are formed by sandwich panels comprising a plate of resilient material 13 whose opposite faces are made a layer 14 of a harder material, such as for example wood-cement.
  • the inertia slab 10 does not come into contact with the formwork 1 by the interposition of a very rigid or not very resilient element.
  • the resilient material 13 is joined to the resilient mat 6 so that a tank of resilient material is formed in which the railroad track with the inertia slab 10 is arranged.
  • sleepers 15 are provided each comprising two concrete blocks 16 and 17 interconnected by a steel bar 18.
  • the rails 3 and 4 are mounted respectively on the blocks 16 and 17 by means of assembly known per se and not shown in Figure 1.
  • a strip of material elastomer 19 is arranged between the rails 3 and 4 and the crosspieces 15 in order to weaken the vibrations between rails 3 and 4 and sleepers 15.
  • shock absorbing panels 11 which have a height predetermined lower than the height of the formwork 1
  • an adjustment piece 20 is provided at the upper part of these panels 11. This adjustment piece 20 makes it possible to adjust the height of the side wall adjoining the inertia slab 10, which includes the panels 11, at street level 2.
  • the adjustment piece 20 comprises two side plates 21 and 22 separated by a resilient material 23. Side plates 21 and 22 partially overlap the layers 14 of the damping panels 11 so that the adjustment piece 20 can move in a substantially vertical direction compared to the damping panels 11.
  • the side plates 21 and 22 are preferably made of chloride of polyvinyl and have a thickness of the order of 2 mm.
  • the adjustment piece 20 rests on the damping panel 11 by via an element 24 of a flexible foam, in particular a foam elastomer.
  • This element 24 is arranged between the side plates 21 and 22 of the part adjustment 20 adjacent to the resilient material 23.
  • the adjustment piece 20 When installing the vibration isolation system according to the invention, the adjustment piece 20 is placed on the panels 11, as shown in the part right of Figure 1, and moved in the direction of arrow 25 by compressing element 24 made of flexible foam until the upper end of the part of adjustment corresponds to the level of the surface coverings of street 2, as shown on the left side of Figure 1.
  • the adjustment piece 20 is fixed to the damping panels 11 using screws 26.
  • FIG 2 an example of the panel 8 is shown.
  • This panel 8 is square and has square recesses 28 for fixing the studs 9.
  • the fixing of the studs 9 can already be prepared according to a study plan which take into account the different stiffness transition zones for a railway track particular, before the arrival of the panels 8 at the site.
  • the panels 8 are placed on the belt 6 in the formwork 1, making sure that the studs 9 are well inserted in the recesses 7 of the mat 6.
  • the panel 8 forms a lost formwork when pouring concrete onto the anti-vibration bed in order to form the inertia slab 10.
  • the panel 8 is consisting of polyvinyl chloride having, for example, a thickness of the order of 2 mm.
  • projections 27 corresponding to the recesses 28 are provided on the upper face of the panel 8, in order to ensure good attachment of the concrete from inertia slab 10 to panel 8.
  • inertia slab does not necessarily have to be made of concrete, but it can, for example, be achieved by filling in gravel and / or sand.
  • the stiffness of the anti-vibration bed cannot only be adjusted in the direction of the rails, but also in a direction transverse to the rails, by example in turns.
  • the studs 9 can be of very varied shape and present, for example, a prismatic or cylindrical appearance.
  • Figure 1 represents only one railroad track, it is possible increase the dimensions of formwork 1 so that it can be adapted to several tracks railway.

Landscapes

  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Railway Tracks (AREA)
  • Vibration Prevention Devices (AREA)
  • Refuge Islands, Traffic Blockers, Or Guard Fence (AREA)
  • Fluid-Damping Devices (AREA)
  • External Artificial Organs (AREA)
  • Treatment Of Liquids With Adsorbents In General (AREA)
  • Investigating Or Analysing Biological Materials (AREA)

Abstract

The vibration insulation system, comprising an inertia slab (1) carrying the rails (3, 4) and laid on a resilient anti-vibration mat (6), has a series of holes (7) in the mat, at least some of which contain blocks (9) of a resilient material which allow the rigidity of the bed to be adjusted. The vibration insulation system, comprising an inertia slab (1) carrying the rails (3, 4) and laid on a resilient anti-vibration mat (6), has a series of holes (7) in the mat, at least some of which contain blocks (9) of a resilient material which allow the rigidity of the bed to be adjusted. The mat is made from a closed-cell synthetic foam material, while the blocks are of a more rigid material such as rubber and are set in a panel (8) between the slab and the mat. The sides of the slab are covered by damping panels e.g. of wood and cement.

Description

L'invention est relative à un système d'isolation vibratoire pour une voie ferrée sur laquelle un véhicule, en particulier un train, métro ou tram, peut se déplacer, comprenant une dalle d'inertie, sur laquelle sont montés des rails, la dalle d'inertie reposant sur un lit anti-vibratile comprenant un tapis résilient. L'invention est en particulier relative à une voie flottante vis-à-vis de son environnement.The invention relates to a vibration isolation system for a track railway on which a vehicle, in particular a train, metro or tram, can travel, comprising an inertia slab, on which rails are mounted, the inertia slab resting on an anti-vibration bed comprising a resilient mat. The invention is in particular relating to a floating track vis-à-vis its environment.

Suivant l'état antérieur de la technique, dans la plupart des cas la dalle d'inertie est en béton qui est coulé sur un tapis continu réalisé en mousse synthétique afin d'isoler les vibrations créées par le passage des véhicules susdits sur les rails vis-à-vis l'environnement.According to the prior art, in most cases the slab of inertia is concrete which is poured on a continuous mat made of synthetic foam so to isolate the vibrations created by the passage of the abovementioned vehicles on the rails opposite the environment.

La technique connue ne donne pas de résultat satisfaisant aux endroits où la voie ferrée est située sur un sous-sol qui présente une raideur discontinue, par exemple, à la transition vers un pont ou à l'endroit où on passe d'une zone non-isolée vers une zone isolée.The known technique does not give satisfactory results in places where the railway is located on a basement which has a discontinuous stiffness, for example, at the transition to a bridge or at the place where one passes from a non-isolated zone towards a zone isolated.

Par ailleurs, les charges non-symmétriques d'un véhicule ayant une vitesse d'exploitation importante dans une courbe de faible rayon peuvent poser des problèmes.Furthermore, non-symmetrical loads of a vehicle having a speed operating in a small radius curve can be problematic.

L'invention a pour but de présenter un système d'isolation qui permet de régler la raideur du lit anti-vibratile et d'éviter ainsi que la voie ferrée présente des zones avec une transition brusque entre des endroits d'une raideur différente. De plus, le système, suivant l'invention, permet de régler la raideur du lit anti-vibratile dans les courbures d'une voie ferrée en fonction des charges d'un véhicule.The object of the invention is to present an insulation system which makes it possible to adjust the stiffness of the anti-vibration bed and thus avoid the railroad having areas with a sudden transition between places of different stiffness. In addition, the system according to the invention makes it possible to adjust the stiffness of the anti-vibration bed in the curvature of a railway depending on the loads of a vehicle.

A cet effet, suivant l'invention, le tapis résilient est pourvu d'évidements dans au moins certains desquels des plots d'une matière résiliente sont insérés d'une manière telle à pouvoir régler la raideur du lit anti-vibratile. To this end, according to the invention, the resilient mat is provided with recesses in at least some of which pads of a resilient material are inserted in a so as to be able to adjust the stiffness of the anti-vibration bed.

Suivant une forme de réalisation avantageuse du système de l'invention, les plots susdits sont montés sur un panneau qui s'étend entre la dalle d'inertie et le tapis résilient susdit.According to an advantageous embodiment of the system of the invention, the aforementioned studs are mounted on a panel which extends between the inertia slab and the mat above resilient.

Suivant une forme de réalisation particulièrement avantageuse du système selon l'invention, la dalle d'inertie est bordée latéralement par une paroi comprenant des panneaux amortissants qui sont jointifs au lit anti-vibratile.According to a particularly advantageous embodiment of the system according to the invention, the inertia slab is bordered laterally by a wall comprising shock absorbing panels which are joined to the anti-vibration bed.

Suivant une forme de réalisation particulière du système, suivant l'invention, une pièce d'ajustement est pourvue à l'extrémité supérieure des panneaux amortissants de manière à pouvoir régler la hauteur de la paroi susdite.According to a particular embodiment of the system, according to the invention, an adjustment piece is provided at the upper end of the panels shock absorbers so that the height of the above-mentioned wall can be adjusted.

L'invention est aussi relative à un procédé d'isolation d'une voie ferrée afin de diminuer la propagation de vibrations, suivant lequel une dalle d'inertie, portant des rails de la voie ferrée, est posée sur un lit anti-vibratile comprenant un tapis résilient, dans lequel l'on insert des plots dans des évidements prévus dans ledit tapis résilient d'une manière telle à régler la raideur du lit anti-vibratile.The invention also relates to a method of insulating a railroad track in order to decrease the propagation of vibrations, according to which a slab of inertia, bearing rails of the railway, is placed on an anti-vibration bed comprising a resilient mat, in which studs are inserted into recesses provided in said resilient mat in such a way as to regulate the stiffness of the anti-vibration bed.

D'autres détails et particularités de l'invention ressortiront de la description donnée, ci-après, à titre d'exemples non limitatifs, de quelques formes de réalisation avec référence aux dessins annexés.Other details and particularities of the invention will emerge from the description given below, by way of nonlimiting examples, of some embodiments with reference to the accompanying drawings.

La figure 1 est une vue schématique en coupe verticale d'une voie ferrée avec le système d'isolation, suivant l'invention.Figure 1 is a schematic vertical sectional view of a railroad track with the insulation system according to the invention.

La figure 2 est une vue schématique en plan d'un panneau sur lequel des plots peuvent être fixés, suivant l'invention.Figure 2 is a schematic plan view of a panel on which studs can be fixed, according to the invention.

Dans les différentes figures les mêmes chiffres de référence se rapportent aux mêmes éléments ou à des éléments analogues.In the different figures, the same reference figures refer to the same or analogous elements.

D'une façon générale, la présente invention est relative à une voie ferrée flottante vis-à-vis de son sous-sol. En particulier, pour construire une voie ferrée, par exemple, dans une rue, un terrassement est exécuté suivant le trajet planifié de cette voie ferrée. Sur ce terrassement un coffrage, de préférence en béton armée, est construit sur le fond duquel on pose un tapis résilient en mousse synthétique, comme par exemple une mousse de polyéthylène à cellules fermées. Ce tapis résilient est pourvu d'évidements distribués régulièrement sur sa surface dans lesquels des blochets de support ou des plots en une matière résiliante sont insérés. In general, the present invention relates to a railway floating vis-à-vis its basement. In particular, to build a railroad, by example, in a street, an earthworks is executed according to the planned route of this way railway. On this earthwork a formwork, preferably in reinforced concrete, is built on the bottom of which a resilient carpet of synthetic foam is laid, such as a closed cell polyethylene foam. This resilient mat has recesses regularly distributed on its surface in which support blocks or studs in a resilient material are inserted.

Contre les parois latérales du coffrage susdit des panneaux amortissants sont agencés qui sont jointifs au tapis résilient. Du béton est coulé sur le tapis résilient et entre les panneaux amortissants jusqu'à une hauteur prédéterminée. Ainsi, une dalle d'inertie est obtenue qui est flottante par rapport au sous-sol et, en particulier, par rapport audit coffrage.Against the side walls of the above formwork damping panels are arranged which are joined to the resilient mat. Concrete is poured over the resilient mat and between the damping panels up to a predetermined height. So a slab inertia is obtained which is floating with respect to the subsoil and, in particular, with respect to formwork audit.

La dalle d'inertie solidifiée repose sur un lit anti-vibratile qui est formé par le tapis résilient et les plots. La raideur du lit anti-vibratile est, par conséquent, déterminée par la raideur du tapis résilient et celle des plots.The solidified inertia slab rests on an anti-vibration bed which is formed by resilient mat and studs. The stiffness of the anti-vibration bed is therefore determined by the stiffness of the resilient mat and that of the studs.

La raideur des plots est, par exemple, choisie en fonction du sous-sol sur lequel la voie ferrée repose. En particulier, dans une zone de transition vers un pont la raideur des plots est changée graduellement afin d'obtenir un changement graduel de la raideur du lit anti-vibratile vers le pont.The stiffness of the studs is, for example, chosen according to the subsoil on which the railroad rests. In particular, in a transition zone towards a bridge the stiffness of the studs is gradually changed in order to obtain a gradual change in the stiffness of the anti-vibration bed towards the deck.

Les plots sont, par exemple, formés de caoutchouc ou d'un matériau composite, selon la raideur souhaitée.The studs are, for example, formed of rubber or a material composite, according to the desired stiffness.

Dans une forme de réalisation particulière de l'invention, la hauteur des plots est plus élevés que l'épaisseur du tapis afin que la partie supérieure des plots soit enveloppée par le béton de la dalle d'inertie. D'une manière telle, les plots sont fixés vis-à-vis cette dalle d'inertie.In a particular embodiment of the invention, the height of the studs are higher than the thickness of the mat so that the upper part of the studs is enveloped by the concrete of the inertia slab. In such a way, the studs are fixed opposite this slab of inertia.

La figure 1 est une coupe transversale schématique d'une voie ferrée avec un système d'isolation suivant une forme de réalisation particulière de l'invention. Dans cette figure, un coffrage 1 en béton est représenté qui a été construit dans une rue 2. Ce coffrage 1 s'étend suivant le trajet d'une voie ferrée comprenant deux rails parallèles 3 et 4.Figure 1 is a schematic cross section of a railroad track with an insulation system according to a particular embodiment of the invention. In this figure, a concrete formwork 1 is represented which was built in a street 2. This formwork 1 extends along the path of a railroad track comprising two parallel rails 3 and 4.

Un tapis résilient 6 présentant des évidements 7 espacés régulièrement l'un de l'autre est posé sur le fond 5 du coffrage 1. Un panneau 8, s'étendant sur le tapis 6, est pourvu de plots 9 à sa face qui est dirigée vers le tapis 6 d'une manière telle que les plots 9 soient insérés dans les évidements 7 du tapis 6.A resilient mat 6 having recesses 7 regularly spaced one on the other is placed on the bottom 5 of the formwork 1. A panel 8, extending over the belt 6, is provided with studs 9 on its face which is directed towards the mat 6 in such a way that the studs 9 are inserted into the recesses 7 of the mat 6.

De cette façon, un lit anti-vibratile est formé sur lequel repose une dalle d'inertie 10. Parsuite de la présence du panneau 8, il n'est pas indispensable que tous les évidements 7 contiennent un plot 9. En particulier, la raideur du lit anti-vibratile peut être réglée en omettant des plots 9 dans certains évidements 7. En augmentant graduellement le nombre de plots 9 par unité de surface suivant une direction déterminée dans les évidements 7 du tapis 6, une augmentation graduellement de la raideur du lit anti-vibratile est obtenue.In this way, an anti-vibration bed is formed on which a slab rests inertia 10. As a result of the presence of panel 8, it is not essential that all of the recesses 7 contain a pad 9. In particular, the stiffness of the anti-vibration bed can be adjusted by omitting studs 9 in certain recesses 7. By gradually increasing the number of studs 9 per unit area in a determined direction in the recesses 7 of the mat 6, a gradual increase in the stiffness of the anti-vibration bed is obtained.

De préférence la raideur des plots 9 est plus importante que celle du tapis 6. Une valeur approximative pour la raideur ktot par m2 du lit anti-vibratile dans une certaine zone peut être calculée suivant la formule ktot = ktapis + n . kplot , dans laquelle ktapis représente la raideur du tapis 6 par m2, kplot représente la raideur d'un plot 9 et n est le nombre de plots 9 par m2.Preferably, the stiffness of the pads 9 is greater than that of the carpet 6. An approximate value for the stiffness k tot per m 2 of the anti-vibration bed in a certain area can be calculated according to the formula k tot = k carpet + n. k plot , in which k carpet represents the stiffness of the carpet 6 per m 2 , k plot represents the stiffness of a plot 9 and n is the number of pads 9 per m 2 .

La dalle d'inertie 10 est bordée latéralement par des parois formées par des panneaux amortissants 11 qui sont jointifs au lit anti-vibratile et, en particulier, au tapis résilient 6. Les panneaux amortissants 11 sont fixés au panneau 8 portant les plots 9 au moyen d'une cornière en acier 12 en assurant que ces panneaux sont positionnés en équerre.The inertia slab 10 is bordered laterally by walls formed by damping panels 11 which are joined to the anti-vibration bed and, in particular, to the carpet resilient 6. The damping panels 11 are fixed to the panel 8 carrying the studs 9 at by means of a steel angle 12 ensuring that these panels are positioned in square.

Les panneaux amortissants 11 sont formés par des panneaux sandwich comprenant une plaque en matériau résilient 13 dont les faces opposées sont constituées d'une couche 14 en un matériau plus dur, comme par exemple du bois-ciment.The damping panels 11 are formed by sandwich panels comprising a plate of resilient material 13 whose opposite faces are made a layer 14 of a harder material, such as for example wood-cement.

Pour que la voie ferrée soit flottante vis-à-vis de son sous-sol, il est important que la dalle d'inertie 10 ne vienne pas en contact avec le coffrage 1 par l'interposition d'un élément très rigide ou peu résilient. A cet effet, le matériau résilient 13 est jointif au tapis résilient 6 de sorte qu'une cuve en matériau résilient est formée dans laquelle la voie ferrée avec la dalle d'inertie 10 est agencée.For the railway to be floating vis-à-vis its basement, it is important that the inertia slab 10 does not come into contact with the formwork 1 by the interposition of a very rigid or not very resilient element. For this purpose, the resilient material 13 is joined to the resilient mat 6 so that a tank of resilient material is formed in which the railroad track with the inertia slab 10 is arranged.

Dans la partie supérieure de la dalle d'inertie des traverses 15 sont prévues comprenant chacune deux blocs en béton 16 et 17 reliés entre eux par une barre en acier 18. Les rails 3 et 4 sont montés respectivement sur les blocs 16 et 17 par des moyens de montage connus en soi et non représentés à la figure 1. Une bande en une matière élastomère 19 est agencée entre les rails 3 et 4 et les traverses 15 afin d'affaiblir les vibrations entre les rails 3 et 4 et les traverses 15.In the upper part of the inertia slab, sleepers 15 are provided each comprising two concrete blocks 16 and 17 interconnected by a steel bar 18. The rails 3 and 4 are mounted respectively on the blocks 16 and 17 by means of assembly known per se and not shown in Figure 1. A strip of material elastomer 19 is arranged between the rails 3 and 4 and the crosspieces 15 in order to weaken the vibrations between rails 3 and 4 and sleepers 15.

Sur la dalle d'inertie 10 et entre les panneaux amortissants 11 un revêtement de surface, non représenté aux figures, peut être appliqué en tenant dégagé la surface supérieure des rails 3 et 4.On the inertia slab 10 and between the damping panels 11 a surface coating, not shown in the figures, can be applied while keeping the upper surface of rails 3 and 4.

Lorsque des panneaux amortissants 11 sont utilisés qui ont une hauteur prédéterminée inférieure à la hauteur du coffrage 1, une pièce d'ajustement 20 est prévue à la partie supérieure de ces panneaux 11. Cette pièce d'ajustement 20 permet de régler la hauteur de la paroi latérale jouxtant la dalle d'inertie 10, qui comprend les panneaux 11, au niveau de la rue 2.When shock absorbing panels 11 are used which have a height predetermined lower than the height of the formwork 1, an adjustment piece 20 is provided at the upper part of these panels 11. This adjustment piece 20 makes it possible to adjust the height of the side wall adjoining the inertia slab 10, which includes the panels 11, at street level 2.

Comme il est illustré à la figure 1, la pièce d'ajustement 20 comprend deux plaques latérales 21 et 22 séparées par un matériau résilient 23. Les plaques latérales 21 et 22 chevauchent partiellement les couches 14 des panneaux amortissants 11 de sorte que la pièce d'ajustement 20 peut se déplacer suivant une direction sensiblement verticale par rapport aux panneaux amortissants 11.As illustrated in FIG. 1, the adjustment piece 20 comprises two side plates 21 and 22 separated by a resilient material 23. Side plates 21 and 22 partially overlap the layers 14 of the damping panels 11 so that the adjustment piece 20 can move in a substantially vertical direction compared to the damping panels 11.

Les plaques latérales 21 et 22 sont de préférence fabriquées en chlorure de polyvinyle et ont une épaisseur de l'ordre de 2 mm.The side plates 21 and 22 are preferably made of chloride of polyvinyl and have a thickness of the order of 2 mm.

Afin de pouvoir régler la hauteur de la paroi, comprenant un panneau amortissant 11, la pièce d'ajustement 20 repose sur le panneau amortissant 11 par l'intermédiaire d'un élément 24 d'une mousse souple, en particulier d'une mousse élastomère. Cet élément 24 est agencé entre les plaques latérales 21 et 22 de la pièce d'ajustement 20 adjacent au matériau résilient 23.In order to be able to adjust the height of the wall, including a panel damping 11, the adjustment piece 20 rests on the damping panel 11 by via an element 24 of a flexible foam, in particular a foam elastomer. This element 24 is arranged between the side plates 21 and 22 of the part adjustment 20 adjacent to the resilient material 23.

Lors de l'installation du système d'isolation vibratoire, suivant l'invention, la pièce d'ajustement 20 est placée sur les panneaux 11, comme représenté à la partie droite de la figure 1, et déplacée dans la direction de la flèche 25 en comprimant l'élément 24 en mousse souple jusqu'à ce que l'extrémité supérieure de la pièce d'ajustement correspond au niveau des revêtements de surface de la rue 2, comme représenté dans la partie gauche de la figure 1.When installing the vibration isolation system according to the invention, the adjustment piece 20 is placed on the panels 11, as shown in the part right of Figure 1, and moved in the direction of arrow 25 by compressing element 24 made of flexible foam until the upper end of the part of adjustment corresponds to the level of the surface coverings of street 2, as shown on the left side of Figure 1.

Ensuite, la pièce d'ajustement 20 est fixée aux panneaux amortissants 11 au moyen de vis 26.Then, the adjustment piece 20 is fixed to the damping panels 11 using screws 26.

Dans la figure 2, un exemple du panneau 8 est représenté. Ce panneau 8 est carré et présente des creux carrés 28 pour la fixation des plots 9. Par l'utilisation de tels panneaux 8, la fixation des plots 9 peut déjà être préparée suivant un plan d'étude qui prends en considération les différentes zones de transition de raideur pour une voie ferrée particulière, avant l'arrivé des panneaux 8 au chantier. Sur le chantier, les panneaux 8 sont posés sur le tapis 6 dans le coffrage 1 en veillant à ce que les plots 9 soient bien insérés dans les évidements 7 du tapis 6.In Figure 2, an example of the panel 8 is shown. This panel 8 is square and has square recesses 28 for fixing the studs 9. By the use of such panels 8, the fixing of the studs 9 can already be prepared according to a study plan which take into account the different stiffness transition zones for a railway track particular, before the arrival of the panels 8 at the site. On site, the panels 8 are placed on the belt 6 in the formwork 1, making sure that the studs 9 are well inserted in the recesses 7 of the mat 6.

Ainsi le panneau 8 forme un coffrage perdu lorsqu'on coule du béton sur le lit anti-vibratile afin de former la dalle d'inertie 10. De préférence, le panneau 8 est constitué de chlorure de polyvinyle ayant, par exemple, une épaisseur de l'ordre de 2 mm. Thus the panel 8 forms a lost formwork when pouring concrete onto the anti-vibration bed in order to form the inertia slab 10. Preferably, the panel 8 is consisting of polyvinyl chloride having, for example, a thickness of the order of 2 mm.

Comme illustré à la figure 1, des saillies 27 correspondant aux creux 28 sont pourvues à la face supérieure du panneau 8, afin d'assurer un bon accrochage du béton de la dalle d'inertie 10 au panneau 8.As illustrated in FIG. 1, projections 27 corresponding to the recesses 28 are provided on the upper face of the panel 8, in order to ensure good attachment of the concrete from inertia slab 10 to panel 8.

Pour le panneau 8 représenté à la figure 2, pourvu de seize creux 28, la relation entre la raideur ktot du lit anti-vibratile et la raideur ktapis du tapis et kplot des plots 9 est donnée par la formule ktot = ktapis + 16 . kplot si un plot 9 est fixé dans tous les creux 28 et si les plots 9 présentent tous la même raideur.For the panel 8 represented in FIG. 2, provided with sixteen hollows 28, the relationship between the stiffness k tot of the anti-vibration bed and the stiffness k carpet of the carpet and k pad of the pads 9 is given by the formula k tot = k carpet + 16. k stud if a stud 9 is fixed in all the hollows 28 and if the studs 9 all have the same stiffness.

Il est bien entendu que l'invention n'est pas limitée aux différentes formes de réalisation décrites ci-dessus, mais que bien d'autres variantes encore peuvent être envisagées sans sortir du cadre de la présente invention, notamment en ce qui concerne le choix des matériaux résilients. Par ailleurs, la dalle d'inertie ne doit pas nécessairement être faite de béton, mais elle peut, par exemple, être réalisé par un remplissage de gravier et/ou de sable.It is understood that the invention is not limited to the different forms described above, but that many other variations can be envisaged without departing from the scope of the present invention, in particular as regards the choice of resilient materials. Furthermore, the inertia slab does not necessarily have to be made of concrete, but it can, for example, be achieved by filling in gravel and / or sand.

De plus, la raideur du lit anti-vibratile ne peut pas seulement être réglé dans la direction des rails, mais également dans une direction transversale aux rails, par exemple dans des virages.In addition, the stiffness of the anti-vibration bed cannot only be adjusted in the direction of the rails, but also in a direction transverse to the rails, by example in turns.

Les plots 9 peuvent être de forme très variée et présenter, par exemple, une allure prismatique ou cylindrique.The studs 9 can be of very varied shape and present, for example, a prismatic or cylindrical appearance.

Quoique la figure 1 ne représente qu'une seule voie ferrée, il est possible d'augmenter les dimensions du coffrage 1 pour pouvoir être adapté à plusieurs voies ferrées.Although Figure 1 represents only one railroad track, it is possible increase the dimensions of formwork 1 so that it can be adapted to several tracks railway.

Claims (19)

Système d'isolation vibratoire pour une voie ferrée sur laquelle un véhicule, en particulier un train, métro ou tram, peut se déplacer, comprenant une dalle d'inertie (10), sur laquelle sont montés des rails (3,4), la dalle d'inertie (10) reposant sur un lit anti-vibratile comprenant un tapis résilient (6), caractérisé en ce que le tapis (6) est pourvu d'évidements (7) dans au moins certains desquels des plots (9) d'une matière résiliente sont insérés afin de pouvoir régler la raideur du lit anti-vibratile.Vibration isolation system for a railway track on which a vehicle, in particular a train, metro or tram, can move, comprising a slab of inertia (10), on which rails (3,4) are mounted, the inertia slab (10) resting on an anti-vibration bed comprising a resilient mat (6), characterized in that the mat (6) is provided with recesses (7) in at least some of which studs (9) d 'a resilient material are inserted in order to adjust the stiffness of the anti-vibration bed. Système suivant la revendication 1, caractérisé en ce que la raideur des plots (9) est plus élevée que celle du tapis résilient (6).System according to claim 1, characterized in that the stiffness of the pads (9) is higher than that of the resilient mat (6). Système suivant la revendication 1 ou 2, caractérisé en ce que le tapis (6) est formé d'une mousse synthétique à cellules fermées.System according to claim 1 or 2, characterized in that the mat (6) is formed from a closed cell synthetic foam. Système suivant l'une quelconque des revendications 1 à 3, caractérisé en ce que le tapis (6) susmentionné est en polyéthylène.System according to any one of Claims 1 to 3, characterized in that the above-mentioned carpet (6) is made of polyethylene. Système suivant l'une quelconque des revendications 1 à 4, caractérisé en ce que les plots (9) sont formés de caoutchouc.System according to any one of Claims 1 to 4, characterized in that the studs (9) are formed from rubber. Système suivant l'une quelconque des revendications 1 à 5, caractérisé en ce que les plots (9) susdits sont montés sur un panneau (8) qui s'étend entre la dalle d'inertie (10) et le tapis résilient (6) susdit.System according to any one of Claims 1 to 5, characterized in that the above-mentioned studs (9) are mounted on a panel (8) which extends between the inertia slab (10) and the resilient mat (6) aforesaid. Système suivant la revendication 6, caractérisé en ce que le panneau (8) susdit est un panneau en chlorure de polyvinyle.System according to claim 6, characterized in that the above-mentioned panel (8) is a polyvinyl chloride panel. Système suivant la revendication 6 ou 7, caractérisé en ce que le panneau (8) susdit forme un coffrage perdu.System according to claim 6 or 7, characterized in that the above-mentioned panel (8) forms a lost formwork. Système suivant l'une quelconque des revendications 1 à 8, caractérisé en ce que la dalle d'inertie (10) est bordée latéralement par une paroi comprenant des panneaux amortissants (11) qui sont jointifs au lit anti-vibratile.System according to any one of Claims 1 to 8, characterized in that the inertia slab (10) is bordered laterally by a wall comprising damping panels (11) which are joined to the anti-vibration bed. Système suivant la revendication 9, caractérisé en ce qu'au moins une face (14) des panneaux amortissants (11) est constituée d'une couche de bois-ciment.System according to Claim 9, characterized in that at least one face (14) of the damping panels (11) consists of a layer of wood-cement. Système suivant la revendication 9 ou 10, caractérisé en ce que les panneaux amortissants (11) susdits sont des panneaux sandwich. System according to claim 9 or 10, characterized in that the above-mentioned damping panels (11) are sandwich panels. Système suivant l'une quelconque des revendications 9 à 11, caractérisé en ce qu'une pièce d'ajustement (20) est pourvue à l'extrémité supérieure des panneaux amortissants (11) afin de pouvoir régler la hauteur de la paroi susdite.System according to any one of Claims 9 to 11, characterized in that an adjustment piece (20) is provided at the upper end of the damping panels (11) so that the height of the said wall can be adjusted. Système suivant la revendication 12, caractérisé en ce que la pièce d'ajustement (20) repose sur les panneaux amortissant (11) par l'intermédiaire d'une mousse souple (24).System according to claim 12, characterized in that the adjustment piece (20) rests on the damping panels (11) by means of a flexible foam (24). Système suivant la revendication 12 ou 13, caractérisé en ce que la pièce d'ajustement (20) comprend deux plaques latérales (21,22), séparées l'une de l'autre par un matériau résilient (23), chevauchant partiellement avec les panneaux amortissants (11).System according to claim 12 or 13, characterized in that the adjustment piece (20) comprises two side plates (21,22), separated from each other by a resilient material (23), partially overlapping with the shock absorbing panels (11). Voie ferrée pourvue du système d'isolation vibratoire suivant l'une quelconque des revendications 1 à 14.Railway track provided with the vibration isolation system according to one any of claims 1 to 14. Procédé d'isolation d'une voie ferrée permettant de diminuer la propagation de vibrations suivant lequel une dalle d'inertie (10), portant des rails (3,4) de la voie ferrée, est posée sur un lit anti-vibratile comprenant un tapis résilient (6), caractérisé en ce que l'on insert des plots (9) dans des évidements (7) prévus dans ledit tapis résilient (6) d'une manière telle à régler la raideur du lit anti-vibratile.Method of isolating a railway track enabling the propagation of vibrations to be reduced, according to which an inertia slab (10) carrying rails (3,4) of the railway track is placed on an anti-vibration bed comprising a resilient mat (6), characterized in that studs (9) are inserted into recesses (7) provided in said resilient mat (6) in such a way as to adjust the stiffness of the anti-vibration bed. Procédé suivant la revendication 16, caractérisé en ce que l'on fixe les plots (9) sur un panneau (8) qui est posé entre le tapis résilient (6) et la dalle d'inertie (10).Method according to claim 16, characterized in that the studs (9) are fixed to a panel (8) which is placed between the resilient mat (6) and the inertia slab (10). Procédé suivant la revendication 16 ou 17, caractérisé en ce que l'on choisi le nombre de plots (9) par unité de surface en fonction de la raideur souhaitée du lit anti-vibratile.Method according to claim 16 or 17, characterized in that the number of studs (9) per unit area is chosen as a function of the desired stiffness of the anti-vibration bed. Procédé suivant l'une quelconque des revendications 16 à 18, caractérisé en ce que la raideur des plots (9) est choisie en fonction de la raideur souhaitée du lit anti-vibratile.Method according to any one of Claims 16 to 18, characterized in that the stiffness of the studs (9) is chosen as a function of the desired stiffness of the anti-vibration bed.
EP02075894A 2001-03-07 2002-03-05 Vibration insulating system for railway tracks Expired - Lifetime EP1251204B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
BE200100152 2001-03-07
BE2001/0152A BE1014044A3 (en) 2001-03-07 2001-03-07 VIBRATORY ISOLATION SYSTEM FOR RAILWAYS.

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EP1251204A2 true EP1251204A2 (en) 2002-10-23
EP1251204A3 EP1251204A3 (en) 2002-10-30
EP1251204B1 EP1251204B1 (en) 2004-07-07

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EP02075894A Expired - Lifetime EP1251204B1 (en) 2001-03-07 2002-03-05 Vibration insulating system for railway tracks

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EP (1) EP1251204B1 (en)
AT (1) ATE270730T1 (en)
BE (1) BE1014044A3 (en)
DE (1) DE60200701T2 (en)
ES (1) ES2230444T3 (en)
PT (1) PT1251204E (en)

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GB2430460A (en) * 2005-09-26 2007-03-28 Balfour Beatty Plc Railway arrangement
WO2011095325A1 (en) * 2010-02-02 2011-08-11 Edilon Sedra Gmbh Track bed mat for a railway superstructure
CN113944071A (en) * 2020-07-16 2022-01-18 洛阳双瑞橡塑科技有限公司 Double-layer vibration damping fastener
WO2024021443A1 (en) * 2022-07-23 2024-02-01 浙江天铁实业股份有限公司 Vibration damping system for track bed, track bed slab, track bed, and rail system

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DE102010030584A1 (en) 2010-06-28 2011-12-29 Poroson Gmbh Device for damping vibrations on track rails
RU2453644C1 (en) * 2010-12-28 2012-06-20 Открытое Акционерное Общество "Российские Железные Дороги" Railway track in area adjacent to manmade structure
CN113152158A (en) * 2020-06-09 2021-07-23 北京铁科特种工程技术有限公司 Foam light soil roadbed structure of heavy haul railway and construction method

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JPS54153407A (en) * 1978-05-24 1979-12-03 Japanese National Railways<Jnr> Vibration-proof rail employing perforated foamed board
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GB2430460A (en) * 2005-09-26 2007-03-28 Balfour Beatty Plc Railway arrangement
WO2011095325A1 (en) * 2010-02-02 2011-08-11 Edilon Sedra Gmbh Track bed mat for a railway superstructure
CN113944071A (en) * 2020-07-16 2022-01-18 洛阳双瑞橡塑科技有限公司 Double-layer vibration damping fastener
CN113944071B (en) * 2020-07-16 2023-04-07 洛阳双瑞橡塑科技有限公司 Double-layer vibration damping fastener
WO2024021443A1 (en) * 2022-07-23 2024-02-01 浙江天铁实业股份有限公司 Vibration damping system for track bed, track bed slab, track bed, and rail system

Also Published As

Publication number Publication date
ES2230444T3 (en) 2005-05-01
EP1251204A3 (en) 2002-10-30
ATE270730T1 (en) 2004-07-15
BE1014044A3 (en) 2003-03-04
PT1251204E (en) 2004-11-30
EP1251204B1 (en) 2004-07-07
DE60200701D1 (en) 2004-08-12
DE60200701T2 (en) 2005-08-11

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