WO2008065560A2 - Voie ferrée permettant l'absorption du bruit généré par des véhicules ferroviaires - Google Patents

Voie ferrée permettant l'absorption du bruit généré par des véhicules ferroviaires Download PDF

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Publication number
WO2008065560A2
WO2008065560A2 PCT/IB2007/054501 IB2007054501W WO2008065560A2 WO 2008065560 A2 WO2008065560 A2 WO 2008065560A2 IB 2007054501 W IB2007054501 W IB 2007054501W WO 2008065560 A2 WO2008065560 A2 WO 2008065560A2
Authority
WO
WIPO (PCT)
Prior art keywords
railway
synthetic fibres
rails
standing
railway according
Prior art date
Application number
PCT/IB2007/054501
Other languages
English (en)
Other versions
WO2008065560A3 (fr
Inventor
Patrick Carels
Original Assignee
COMPOSITE DAMPING MATERIAL N.V., in het kort 'CDM'
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 N.V., in het kort 'CDM' filed Critical COMPOSITE DAMPING MATERIAL N.V., in het kort 'CDM'
Publication of WO2008065560A2 publication Critical patent/WO2008065560A2/fr
Publication of WO2008065560A3 publication Critical patent/WO2008065560A3/fr

Links

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
    • 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

Definitions

  • the invention concerns a railway with rails embedded in a hardening, whereby the top side of the hardening between the rails is situated between the foot of the rails and practically the top side of the rails and whereby sounds of railway vehicles moving over this railway are absorbed.
  • ballastless railways are built whereby the rails are fixed to a concrete construction with the bottom side of the rail foot.
  • the rails are hereby usually entirely embedded in a hardening which may consist of a paving on the top side whose height is practically equal to the height of the top side of the rails.
  • This technique is mainly used for tram tracks and level crossings whereby the rails are entirely worked into the road surface, but it is also increasingly being used to replace traditional ballast railways as it requires much less maintenance.
  • such embedded rails are aligned as well as possible, and they are provided with vibration-isolating material so as to transfer as few vibrations or as little noise as possible to the environment via the rails.
  • the invention aims to remedy this by providing a railway which efficiently reduces the sound of railway vehicles as they move over a railway with rails that are embedded in a hardening.
  • a sound-absorbing layer is provided on the top side of this hardening, between the rails, comprising standing fibres made of a synthetic material as claimed in the appended claims for the absorption of sounds made by railway vehicles moving over a railway.
  • the sound-absorbing layer is formed of a mat with standing synthetic fibres having a height of almost 4 to 7 cm.
  • these synthetic fibres are made of polyethylene and/or polypropylene.
  • the standing synthetic fibres consist of the filaments of filament yarns having a width of 9 to 0.8 mm.
  • the standing synthetic fibres comprise monofilament yarn having a width of 0.8 to 4 mm on the one hand, preferably of 1 to 3 mm, a thickness of 100 to 250 ⁇ m, preferably of 110 to 150 ⁇ m and a count of 1,000 to 3,000 dtex, and fibrillated yarn having a width of 5 to 10 mm, preferably of 6 to 9 mm, a thickness of 60 to 200 ⁇ m, preferably of 60 to 100 ⁇ m and a count of 5,000 to 12,000 dtex on the other hand.
  • the invention also concerns a method for building such a railway and a prefab railway element that is provided with a sound-absorbing layer.
  • Figure 1 is a schematic representation of a cross section of a railway with embedded rails, provided with a sound-absorbing layer according to the invention, whereby the rails are embedded in a concrete hardening.
  • Figure 2 is a schematic representation of a cross section of a railway with embedded rails, provided with a sound-absorbing layer according to the invention, whereby a hardening of gravel is provided between the embedded rails.
  • the invention in particular concerns railways having rails that are embedded in a hardening; in other words, railways that are provided with a hardening that is higher between the rails than the foot of the rails, which is the lower part of the rails with which the latter are fixed.
  • rails 1 of a railway 2 are fixed to a concrete construction 3 and are further embedded in a concrete hardening 4, such that the top side 5 of the rails 1 runs practically equal to the top side 6 of the concrete hardening 4.
  • the rails 1 can hereby be surrounded by a vibration-isolating material 7.
  • the concrete construction 3 may for example also be the base of a prefab railway element.
  • a sound-absorbing layer 8 On top of the concrete hardening 4, between the rails 1, is glued a sound-absorbing layer 8 according to this preferred embodiment of the invention. This can be done for example with polyurethane glue.
  • This sound-absorbing layer 8 is formed of a mat 9 with standing, flexible synthetic fibres 10 having a free end.
  • the standing synthetic fibres 10 are formed of different standing synthetic yarn filaments made of polyethylene and/or polypropylene.
  • the mat 9 is tufted, whereby the tufts protruding from the mat form the standing synthetic fibres 10.
  • These tufts comprise filament yarns composed of different filament yarns, in particular monofilament yarns and fibrillated filament yarns.
  • the filaments have a thickness varying between 100 to 250 micron and they have a pile height of 15 to 60 mm, preferably almost 35 mm.
  • the mat has a density of almost 75,000 to 100,000 filaments per m 2 .
  • the total height of the sound-absorbing layer amounts to 35 to 60 mm.
  • a bed of silica sand in an amount of preferably some 10 to 20 kg per m 2 .
  • This sand may possibly be replaced in part or as a whole by another granular material such as rubber granules.
  • the height of the bed is such that the free ends of the standing synthetic fibres extend above it.
  • the length of the synthetic fibres above the bed is not smaller than 2 to 3 cm.
  • the synthetic fibres, in particular the wider filaments, prevent erosion of the bed by wind and/or water.
  • synthetic fibres may preferably be used that look like natural grass or like the paving in the surrounding area.
  • the synthetic fibres could for example also be formed of mushroom-shaped burls.

Landscapes

  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Road Paving Structures (AREA)
  • Railway Tracks (AREA)
  • Nonwoven Fabrics (AREA)

Abstract

L'invention concerne des voies ferrées dont les rails sont encastrés dans un pavage. Une couche d'absorption de bruit est appliquée entre les rails, à l'endroit le plus élevé du pavage, laquelle couche contient des fibres synthétiques faisant saillie pour absorber le bruit généré par les véhicules ferroviaires se déplaçant sur la voie ferrée.
PCT/IB2007/054501 2006-06-13 2007-06-13 Voie ferrée permettant l'absorption du bruit généré par des véhicules ferroviaires WO2008065560A2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
BEBE2006/0324 2006-06-13
BE2006/0324A BE1017167A3 (nl) 2006-06-13 2006-06-13 Spoorweg voor absorptie van geluiden van spoorvoertuigen.

Publications (2)

Publication Number Publication Date
WO2008065560A2 true WO2008065560A2 (fr) 2008-06-05
WO2008065560A3 WO2008065560A3 (fr) 2008-10-30

Family

ID=37663110

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IB2007/054501 WO2008065560A2 (fr) 2006-06-13 2007-06-13 Voie ferrée permettant l'absorption du bruit généré par des véhicules ferroviaires

Country Status (2)

Country Link
BE (1) BE1017167A3 (fr)
WO (1) WO2008065560A2 (fr)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3737567A1 (de) * 1986-12-18 1988-07-07 Waagner Biro Ag Laermschutzeinrichtung fuer eisenbahnstrecken
DE9003451U1 (de) * 1989-09-08 1990-08-09 Frenzel, Jürgen, 31084 Freden Bausatz für Abdeckung von Gleisanlagen
DE4430967A1 (de) * 1994-08-31 1996-03-07 Xaver Riebel Bauunternehmung G Schienenlagerung
WO1998051863A1 (fr) * 1997-05-13 1998-11-19 Mecno-Rail S.R.L. Superstructure de voies, en particulier, pour des voies ferrees de tramways, de chemins de fer et de metros
WO1999001617A1 (fr) * 1997-07-04 1999-01-14 Nederlandse Organisatie Voor Toegepast-Natuurwetenschappelijk Onderzoek Tno Voie ferree avec absorption des vibrations et des sons amelioree

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3737567A1 (de) * 1986-12-18 1988-07-07 Waagner Biro Ag Laermschutzeinrichtung fuer eisenbahnstrecken
DE9003451U1 (de) * 1989-09-08 1990-08-09 Frenzel, Jürgen, 31084 Freden Bausatz für Abdeckung von Gleisanlagen
DE4430967A1 (de) * 1994-08-31 1996-03-07 Xaver Riebel Bauunternehmung G Schienenlagerung
WO1998051863A1 (fr) * 1997-05-13 1998-11-19 Mecno-Rail S.R.L. Superstructure de voies, en particulier, pour des voies ferrees de tramways, de chemins de fer et de metros
WO1999001617A1 (fr) * 1997-07-04 1999-01-14 Nederlandse Organisatie Voor Toegepast-Natuurwetenschappelijk Onderzoek Tno Voie ferree avec absorption des vibrations et des sons amelioree

Also Published As

Publication number Publication date
BE1017167A3 (nl) 2008-03-04
WO2008065560A3 (fr) 2008-10-30

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