EP0593608A1 - Dispositif d'insonorisation pour voies ferrees - Google Patents

Dispositif d'insonorisation pour voies ferrees

Info

Publication number
EP0593608A1
EP0593608A1 EP92914926A EP92914926A EP0593608A1 EP 0593608 A1 EP0593608 A1 EP 0593608A1 EP 92914926 A EP92914926 A EP 92914926A EP 92914926 A EP92914926 A EP 92914926A EP 0593608 A1 EP0593608 A1 EP 0593608A1
Authority
EP
European Patent Office
Prior art keywords
rail
protection device
noise protection
absorber material
wall
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.)
Withdrawn
Application number
EP92914926A
Other languages
German (de)
English (en)
Inventor
Werner Rieder
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.)
Jenbacher Energiesysteme AG
Original Assignee
Jenbacher Energiesysteme AG
Jenbacher Transportsysteme AG
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 Jenbacher Energiesysteme AG, Jenbacher Transportsysteme AG filed Critical Jenbacher Energiesysteme AG
Publication of EP0593608A1 publication Critical patent/EP0593608A1/fr
Withdrawn legal-status Critical Current

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
    • 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
    • E01B2204/00—Characteristics of the track and its foundations
    • E01B2204/11—Embedded tracks, using prefab elements or injecting or pouring a curable material

Definitions

  • the invention relates to a noise protection device for railroad tracks, in which a cover extending in the longitudinal direction of the rail is arranged on both sides of each rail to reduce the sound radiated from the rails in railroad operation to the environment.
  • Rail is one of the main sources of sound that are responsible for the rolling noise of rail vehicles.
  • Other proposals are to dampen the rail vibrations by attaching damping elements to the rail.
  • the vibrations of the rail caused by the rolling wheel cannot be dampened to a satisfactory extent with such systems, so that a lot of airborne noise is still emitted to the environment.
  • the object of the invention is to provide a noise protection device for railroad tracks of the type mentioned at the outset, with which the radiation of the noise generated in the region of the rail into the environment can be drastically reduced.
  • This is achieved according to the invention in that the cover extends in the longitudinal direction of the rail
  • Outside wall comprises, within which an airborne sound absorbing material is arranged, an air gap preferably being present between the airborne sound absorbing surface facing the rail and the rail.
  • An airborne sound-absorbing material is arranged on both sides of the rail, which absorbs a large part of the airborne sound, in particular laterally radiated by the rail, and converts it into heat.
  • An air gap which is preferably provided between the air-sound-absorbing surface of the absorber material and the rail, provides efficient structure-borne sound decoupling between the absorber material and the rail and ensures that the sound-absorbing properties of the absorber material are fully exploited.
  • the noise protection device according to the invention is generally symmetrical left and right of the
  • Open-pore foams are particularly suitable as sound-absorbing materials.
  • porous, absorber materials are also conceivable and possible, for example fibrous materials such as refills ral or glass fiber materials can be used advantageously.
  • the sound absorption level ⁇ (sound absorption level) of the absorber material in a frequency range from 250 Hz to 4000 Hz is advantageously above 0.3 (0.3), preferably above 0.6 (0.6). It is particularly favorable if the sound absorption level of the absorber material has a sound absorption level ⁇ of over 0.8 (0.8), preferably over 0.95 (0.95) in a frequency range from 500 Hz to 4,000 Hz. Effective noise reduction can thus be achieved in the predominant sound emission range between 250 and 2000 Hz.
  • the outer walls lie against the rail by means of structure-borne sound decoupled elements, which effectively prevents the outer walls from being excited by the rail vibration.
  • the outer walls preferably carry the absorber material located therein and protect them against external influences.
  • FIG. 1 shows a schematic cross section through a rail provided with a noise protection device according to the invention
  • FIG. 2 shows a similar cross section in the area of the rail fastening for two different fastening types
  • FIG. 3 shows a further variant in cross section.
  • the rail 7 has a rail foot 7a, a rail web 7b and a rail head 7c.
  • the rail 7 is covered on both sides by an outer wall 1 running in the longitudinal direction of the rail, preferably made of plastic, which extends from the rail head 7c to the rail foot 7a at a lateral distance from the rail web.
  • An air-sound-absorbing absorber material 3 for example an open-pore polyurethane foam, is arranged in each of these outer walls 1, an air gap 8 being present between the air-sound-absorbing surface of the absorber material and the rail 7.
  • the rubber-elastic profile strips 2 which are bent substantially in a U-shape around the edge of the outer walls 1, prevent structure-borne noise coupling between the rail and the outer wall 1.
  • the absorber material 3 is fastened on the inside to this outer wall, which is decoupled from structure-borne noise, the outer wall carrying the absorber material alone .
  • the outer wall thus serves as a support and as protection against external influences for the absorber material 3.
  • a clasp 6a, b which passes underneath the rail and is decoupled from it via an elastic layer 4, is provided, which engages around the outer walls 1 and presses from the outside inwards towards the rail.
  • the tension has spring joints 5 which act on the tension leg 6b inwards.
  • the absorber material on the surface facing the rail is adapted to the cross-sectional shape of the rail 7 in such a way that an air gap 8 with an essentially constant thickness exists between the absorber material 3 and the rail 7.
  • An air gap in the range of 5 mm to 2 cm enables the absorber material to function optimally and at the same time allows the compact construction of the entire noise protection device.
  • the outer wall 1 has three regions: a region la close to the head of the rail with a small angle to the horizontal (preferably 10 ° -30 °), an adjoining second region 1b which is inclined more steeply downwards (preferably with an angle of 70 ° -90 °) and finally a third area 1c, which extends substantially horizontally to the outside of the rail foot 7a.
  • the upper first area 1 a of the outer wall 1 essentially extends up to the underside of the rail head.
  • the outer walls 1 can advantageously be designed as a plastic profile running in the longitudinal direction of the rail with a uniform profile cross section. But it is also possible that the outer walls in the area between the sleepers lie closer to the rail and only in the area of the sleepers, where the rail is fastened, are expanded to encapsulate the rail fasteners.
  • the noise protection device can be attached to the rail in the area of the sleepers. However, it is also possible to provide fastening means (for example the clasp 6a, b) at locations between the sleepers.
  • FIG. 2 shows two exemplary embodiments in cross section in the region of a threshold 9.
  • a known elastic insert 4 is provided below the rail.
  • the outer walls 1 rest on the rail 7 via rubber-elastic U-profiles 2.
  • the dimensions of the absorber material 3 'in the region of these fastening means can be reduced (left side of FIG. 2) or completely omitted (right side of FIG. 2). Since the absorber materials are present on both sides of the fastening means as seen in the longitudinal direction of the rail, despite the reduction or omission of the absorber material in the rail fastening region, airborne sound emitted by the rail is absorbed efficiently.
  • Fig. 3 shows a variant in which the rail fastening nut 11 is guided through the outer wall 1 of the noise protection device to the outside. This allows the rail fastening nut to be retightened when the noise protection device is installed.
  • the rail fastening nut 11 guided through the outer wall carries a thread on which an additional nut 12 is screwed.
  • This additional nut 12 can be screwed against the outer wall of the noise protection device, being between the additional nut 12 and a metal disk 13 and a structure-insulated, elastic insert 14 are arranged on the outer wall.
  • the noise protection device can be attached.
  • the outer walls 1 run obliquely downwards from the region of the rail head 7c or below it.
  • the outer walls 1 are firmly connected to the sleepers via hollow profiles 15 which run in the longitudinal direction of the rail and which are screwed to the sleepers 9.
  • the outer walls 1 rest against the rail head 7c only via elastic sealing lips 2.
  • airborne sound-absorbing materials 3 are arranged on the outer walls 1, between which, on the one hand, and the rail 7 or the threshold 9, on the other hand, there is an air gap 8.
  • the noise protection device shown can outer walls l made of mechanically strong material

Landscapes

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

Abstract

Dispositif d'insonorisation pour voies ferrées, dans lequel pour la réduction du son émis par les rails dans l'environnement pendant le passage des trains, un recouvrement est disposé des deux côtés de chaque rail dans le sens de leur longueur. Pour la suppression effective du bruit, l'invention prévoit que le recouvrement comporte une paroi extérieure (1) le long des rails, ladite paroi allant, à distance latérale par rapport à l'âme de rail, du champignon de rail (7c) jusqu'au patin de rail (7a), ou jusqu'à la traverse (9), et à l'intérieur de laquelle est disposé un matériau absorbant les bruits aériens et possédant un degré élevé d'absorption phonique (3). Entre la surface, orientée vers le rail (7) et absorbant les bruits aériens, du matériau d'insonorisation (3) et le rail lui-même est disposés un espace d'air (8).
EP92914926A 1991-07-11 1992-07-10 Dispositif d'insonorisation pour voies ferrees Withdrawn EP0593608A1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
AT1389/91 1991-07-11
AT138991 1991-07-11
PCT/AT1992/000092 WO1993001354A1 (fr) 1991-07-11 1992-07-10 Dispositif d'insonorisation pour voies ferrees

Publications (1)

Publication Number Publication Date
EP0593608A1 true EP0593608A1 (fr) 1994-04-27

Family

ID=3512823

Family Applications (1)

Application Number Title Priority Date Filing Date
EP92914926A Withdrawn EP0593608A1 (fr) 1991-07-11 1992-07-10 Dispositif d'insonorisation pour voies ferrees

Country Status (2)

Country Link
EP (1) EP0593608A1 (fr)
WO (1) WO1993001354A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107292046A (zh) * 2017-07-03 2017-10-24 西南交通大学 一种减振降噪效果的检验方法及装置

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB9202992D0 (en) * 1992-02-13 1992-03-25 Ashdown Environmental Limited Noise suppression systems
DE59508424C5 (de) * 1994-12-16 2007-11-08 Sedra Asphalt-Technik Biebrich Gmbh Schienengleis, insbesondere für Rasen
DE19837479C1 (de) * 1998-08-11 2000-06-15 Sedra Asphalt Technik Biebrich Kammerfüllkörper aus Polyurethanhartschaum
CA2251490C (fr) * 1998-10-22 2004-02-03 Polycorp Inc. Bride de scellement de rail a deux pieces et outil pour la poser
GB0613080D0 (en) * 2006-07-03 2006-08-09 Corus Uk Ltd Rail dampers
JP5185877B2 (ja) * 2009-04-03 2013-04-17 積水化学工業株式会社 レールの防音装置
AT510157B1 (de) * 2010-08-04 2012-02-15 Getzner Werkstoffe Holding Gmbh Schienenanordnung für den schienenverkehr
CN111118976A (zh) * 2020-02-12 2020-05-08 山西尚风科技股份有限公司 一种轨道交通近轨降噪装置

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT386431B (de) * 1986-12-18 1988-08-25 Waagner Biro Ag Gleisanlage mit laermschutzvorrichtung
DE8913618U1 (de) * 1989-11-17 1990-01-18 Hans-Friedrich Wagner Vertrieb von Geräten und Systemen, 3222 Freden Gleisabdeckung

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO9301354A1 *

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107292046A (zh) * 2017-07-03 2017-10-24 西南交通大学 一种减振降噪效果的检验方法及装置
CN107292046B (zh) * 2017-07-03 2019-12-03 西南交通大学 一种减振降噪效果的检验方法及装置

Also Published As

Publication number Publication date
WO1993001354A1 (fr) 1993-01-21

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