EP1988213A1 - Vorgefertigtes Schienenträgerelement - Google Patents

Vorgefertigtes Schienenträgerelement Download PDF

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Publication number
EP1988213A1
EP1988213A1 EP07075326A EP07075326A EP1988213A1 EP 1988213 A1 EP1988213 A1 EP 1988213A1 EP 07075326 A EP07075326 A EP 07075326A EP 07075326 A EP07075326 A EP 07075326A EP 1988213 A1 EP1988213 A1 EP 1988213A1
Authority
EP
European Patent Office
Prior art keywords
rail
elastic body
element according
protective strip
top side
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Withdrawn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
EP07075326A
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English (en)
French (fr)
Inventor
Gerrit Marinus Van Der Houwen
Willem Paul Schram
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.)
Edilon Sedra BV
Original Assignee
Edilon Sedra BV
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 Edilon Sedra BV filed Critical Edilon Sedra BV
Priority to EP07075326A priority Critical patent/EP1988213A1/de
Publication of EP1988213A1 publication Critical patent/EP1988213A1/de
Withdrawn legal-status Critical Current

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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
    • E01B21/04—Special fastenings, joint constructions, or tie-rods
    • 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
    • E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
    • E01C9/00—Special pavings; Pavings for special parts of roads or airfields
    • E01C9/06—Pavings adjacent tramways rails ; Pavings comprising railway tracks

Definitions

  • the present invention relates to a prefabricated rail supporting element for supporting a rail for rail-bound vehicles, having a longitudinal elastic body with a bottom portion having a bottom and side portions having a top side forming a rail receiving opening extending along the length of said element, which rail receiving opening is adapted to receive the rail while leaving a head of the rail exposed, which body is adapted to be embedded in a rail track base structure.
  • Such a prefabricated rail supporting element is used to hold any type of tramway rail, railway or any other type of rail.
  • a rail comprises a head, a narrower intermediate portion and a base region.
  • rails being fastened to sleepers they can be supported in a longitudinal elastic body, which body is adapted to be embedded in a rail track base structure.
  • Such a socalled "paved-in embedded railstructure" is suitable for the classic forms of transport - metros, trams and trains, but are also for the infrastructure concepts of the future: light rail, heavy rail and high speeds and guided bus railsystems.
  • Advantages of embedded rail systems are reduced vibration and noise disturbance, long-lasting, maintenance free and easy to install.
  • a longitudinal elastic body with a bottom portion having a bottom and side portions having a top side forming a rail receiving opening extending along the length of said element in advance, by pouring the elastic material in a mould.
  • Such prefabricated rail supporting elements are frequently applied for resilient mounting of a rail and well-known to the person skilled in the art.
  • the prefabricated elastic bodies insulate against noise and vibration and are preferably made from materials having good electrical insulation from e.g. stray currents.
  • Such a prefabricated elastic shell can easily be bent open to introduce a rail.
  • the longitudinal elastic body surrounding the rail is adapted to be embedded in a rail track base structure.
  • a rail track base structure may be a pourable road pavement.
  • a pourable road pavement may be concrete or asphalt or the like, or any combination thereof, such as a concrete basis and an asphalt top layer as road surface.
  • the road pavement level, the top level of the railhead and the top side of the elastic body is substantially the same, in which the rail is confined by the elastic body, and the elastic body is confined by the rail track base structure.
  • the elastic body is situated between the rail and the rail track base structure and a body - road pavement interface is in contact with the open air.
  • a disadvantage of such an embedded rail system is fragmentation of the rail track base structure confining the elastic body. Such fragmentation at the interface possibly results from differences in elasticity or expansion coefficient between the materials, or expansion of ice in existing pores during winter.
  • EP 1 155 194 discloses a rail system in which a rail is surrounded by a resilient material, while leaving a head of the rail exposed, which resilient material is filled in a U-shaped profile, in this document called a 'shell'. Hence, the resilient material is situated between the rail and the profile, the profile adjoining the rail track base structure.
  • the purpose of the U-shaped profile described in this patent was to provide a profile in which the resilient material could be poured, and not to prevent fragmentation of the road pavement confining the shell.
  • the object of the present invention is to provide an alternative improved embedded rail system.
  • the embedded rail system according to the invention is characterized in that the element further comprises an elongated protective strip, which is connected to a side portion of the elastic body so as to leave the bottom of the elastic body exposed, and extends essentially over the length and in an upper corner region of said body, which strip has anchoring means protruding sideways from the protective strip.
  • an elongated protective strip which is connected to a side portion of the elastic body so as to leave the bottom of the elastic body exposed, and extends essentially over the length and in an upper corner region of said body, which strip has anchoring means protruding sideways from the protective strip.
  • the elongated protective strip according to the invention enforces the interface between the elastic body and the rail track base structure and protects the edge of the rail track base structure confining the elastic body from embrittlement.
  • the protective strip hence provides a reinforcement of the interface which can take up loads from vehicles.
  • the protective strip is connected to the elastic body.
  • the protective strip can be connected to the elastic body by assembling the protective strip and the elastic body when the elastic body is made in its mould.
  • the protective strip is connected to a prefabricated elastic body.
  • the rail supporting element according to the invention comprising the elastic body with the protective strip attached to it is an improvement over conventional rail supporting elements without the protective strip.
  • the elastic body with the protective strip can analogously be combined with a rail in situ, and subsequently embedded in a rail track base structure.
  • the protective strip is connected to a side portion of the elastic body and extends essentially over the length thereby reinforcing the interface between the elastic body and the rail track base structure, and so as to leave the bottom of the elastic body exposed.
  • the protective strip is connected to an upper corner region of one or both side portions of said elastic body, which may be only at the top side of the elastic body, only at the side of the elastic body or connected to both the top side and one or both sides of the elastic body.
  • the rail supporting element according to invention can be used for any rail type, even with a very bulky base.
  • Well-known common rail types suitable to be supported in a rail supporting element according to the invention are Vignoles rails, flanged rails, grooved rails, flat bottom rails, bullhead rails, etc. etc.
  • Yet another effect is that replacement of a rail is much easier.
  • both the rail and the elastic body material holding the rail are removed.
  • a new rail is embedded in elastic material poured around the rail in situ. The removal of the elastic body material is much easier when the elastic body material only adheres to the protective strips at the upper side regions, instead of adhering to a complete U-shaped surrounding profile.
  • the protective strip extends up to the top side of the elastic body and prevents the elastic body - rail track base structure from being in contact with the open air. Hence, fragmentation at this interface is prevented, thereby a creating stable and solid embedded rail system.
  • the protective strip can have various shapes. For example: only a vertically extending strip having an upper face extending at the top side of the elastic body, or T-shaped, having the horizontal part of the 'T' extending partly over the top side of the elastic body, or alternatively bulb-shaped, having the bulb protruding from the side of the elastic body, or alternatively having the bulb extending partly over the top side of the elastic body.
  • the protective strip may be made of plastic, metal or composite material. Preferably, the strip extends along the entire length of the prefabricated elastic body. However, when the protective strip is made of a metal, the protective strip should be little shorter than the prefabricated elastic body to prevent any electric contact between the protective strips when interconnecting multiple elastic bodies.
  • the protective strip extends up to the top side of the body. More preferably, the protective strip extends up to the road surface after having embedded the rail supporting element in the rail track base structure, such that the upper face of the protective strip forms part of the road surface, provided between the rail track base structure and the elastic body. In this embodiment, it is prevented that the interface between the elastic body and the rail track base structure is exposed to the open air, thereby preventing the entrance of water at the interface.
  • the upper face of the protective strip preferably forming part of the road surface, may be provided with a wear-resistant coating, both to prevent a slippery road surface and to prevent wear of the protective strip.
  • the protective strip according to the invention comprises anchoring means protruding sideways from the protective strip, to be anchored to the rail track base structure. This ensures a stable position of the protective strip between the elastic body and the rail track base structure: being connected to the elastic body on one hand, and anchored to the rail track base structure on the other hand.
  • Such anchorage may be formed by protruding pins or loops, and is preferably made out of metal, most preferably steel. Other shapes may be applied, e.g. as commonly used for ground anchors.
  • An advantageous anchorage is formed by a dovetail, which may be rolled in a metal protective strip profile or made by protrusion of a plastic protective strip.
  • the elastic body for holding the rail may be relatively elastic to provide an increased damping insulation for the rail, while the interface with the rail track base structure having a much lower elasticity is not damaged.
  • the larger the elasticity of the elastic body the larger the slits are that may occur at the interface.
  • the elastic body may be composed of one or more elements.
  • the elastic body is made as a single piece.
  • This prefabricated elastic body has generally a U-shape to hold the rail in. The U-shape can be opened (unfolded) to allow the rail to be entered.
  • the prefabricated elastic body is composed of multiple elements, e.g. two elements adjoining both sides of the rail and the bottom, or three elements, one of which adjoins the base of the rail.
  • An advantage of an elastic body composed of more elements is that each element may have a different stiffness.
  • the bottom portion of the elastic body is preferably more elastic to provide sufficient insulation against vibration, while the side portions may be less elastic to prevent torsion of the rail.
  • the prefabricated elastic body should be made of an elastic material to allow the rail to be entered in the elastic body.
  • the elastic body material may be an elastic foam or an elastomeric material.
  • polyurethane is used.
  • fill elements are used in the elastic body, the fill elements being surrounded by the elastic material.
  • Such fill elements may be tubes, blocks, chunks or profiles of foam, concrete or any other material.
  • a longitudinal elastic body 1 with a bottom portion 1a having a bottom 1d and side portions 1b, 1c having a top side 1e form a rail receiving opening extending along the length of said element.
  • the rail receiving opening receives a rail 3, while leaving a head 3a of the rail exposed.
  • the type of rail 3 shown in this embodiment of the invention comprises a narrow web 3b and a broad flat-botted foot 3c.
  • the elastic body 1 is made as a single piece, comprising cut-aways 7 at one end to couple the elastic body 1 with another such elastic body 1. To the upper corner region of the elastic body 1 two elongated protective strips 2 are connected.
  • the strips 2 protect the edge of the rail track base structure in which the rail supporting element 9 shown in fig. 1a is to be embedded. Both strips 2 have a bulb-shaped profile. An elongated base of the profile is attached to the side of the elastic body 1, while a bulb 2a on the upper side of the strip protrudes away from the elastic body 1 and rail 3, in the direction of the rail track base structure 5,6 (not shown in fig. 1a ). Also protruding in the direction of the rail track base structure are looped anchors 4, in the embodiment shown in fig. 1b interacting with bars 8 positioned in the loops 4, which provide a firm connection with the rail track base structure 5,6 once the rail track base structure is provided and the rail supporting element 9 is embedded in the rail track base structure. In fig.
  • the rail supporting element 9 according to the invention is embedded in a rail track base structure, here composed of a concrete bottom layer 5 and an asphalt top layer 6. It is clear from the drawing 1b that the head of the rail 3a is exposed to the open air, as well as the adjacent elastic body 2. However, the interface between the elastic body and the road pavement (asphalt layer 6) at the road surface is protected by the bulb 2a of strip 2.
  • FIG. 2 shows a cross section of an alternative rail supporting element 19 according to the invention.
  • a longitudinal elastic body 10 is made as a single piece and comprises a similar bulb-shaped elongated protective strip 12 as shown in fig. 1 .
  • the protective strip is attached to a side face 10a of the shell 10, leaving the bottom side 10b of the shell exposed.
  • the top side 10c of the elastic body 10 remains exposed to the open air.
  • the elastic body 10 holds an alternative rail type 13, comprising a bulb-shaped head 13a which is kept exposed, a relatively broad web 13b and a broad, flat foot 13c.
  • alternative anchoring means 14 are applied in this embodiment, comprising pins which will protrude from the protective strip 12 into the rail track base structure (not shown, yet not assembled).
  • Fig. 3 shows a cross section of yet an alternative prefabricated rail supporting element 29 according to the invention, comprising a longitudinal elastic body 20 having a bottom portion 20c and side portions 20a, 20b, forming a rail receiving opening receiving a rail 23, similar to the rail type shown in fig. 2 .
  • tube-shaped fill elements 25 are provided in side portions 20a, 20b.
  • T-shaped elongated protective strips 22 are provided at the upper corner region of side portions 20a, 20b. The strips 22 are attached to the side portions of the shell 20 and extend up to the road surface. The protective strips will form part of the road surface and are provided with a wear-resistant top layer 24.
  • Anchoring pins 26 protrude sideways from the protective strip 22.
  • a prefabricated rail supporting element 39 according to the invention is shown.
  • the rail supporting element 39 has a longitudinal elastic body 30 with a bottom portion 30a having a bottom 30d and side portions 30b, 30c having a top side 30e.
  • Side portions 30b, 30c comprise fill elements 35, e.g. to decrease the weight of the element 30 or to lower the costs of the elastic body 30.
  • the bottom portion 30a and side portions 30b, 30c form a rail receiving opening 33.
  • side portions 30b, 30c are moved sideways and bottom portion 30a is bended to fold the rail supporting element 39 open, to be able to introduce a rail, not shown in fig.
  • a rail supporting element such as shown in fig 4a comprising rail 34.
  • a head 34a of the rail 34 is kept exposed.
  • T-shaped elongated protective strips 32 are provided at the upper corner region of side portions 30b, 30c. The strips 32 extend up to the top side 30e of the side portions 30b, 30c, up to road surface 37. Yet another type of anchoring loops 36 protrude sideways from the protective strip 32.
  • Rail supporting element 49 supports a rail 44 of the type previously shown in fig. 4 .
  • the rail supporting element 49 has a longitudinal elastic body 40 shown in cross-section, with a bottom portion 40a having a bottom 40d and side portions 40b, 40c with a top side 40e.
  • the elastic body 40 is composed of three elements 40a, 40b, 40c.
  • the side elements 40b, 40c are more stiff than bottom element 40a, having a large elasticity to damp vibrations.
  • Recesses 40f are provided to reduce weight of the side elements 40b, 40c.
  • Elongated protective strips 42 are connected to side portions 40b, 40c of the elastic body 40 so as to leave the bottom of the elastic body 40d exposed.
  • the protective strip 42 has a bulb-shaped profile with the bulb 42a extending partly over the top side 40e of the body 40.
  • the prefabricate rail supporting element 49 is embedded in a rail track base structure, comprising a concrete bottom layer 48a, an asphalt top layer 48b extending up to a road surface 48c.
  • Anchoring loops 46 protrude sideways from the protective strip 42. Since anchoring in concrete is more firm than in asphalt, the loops 46 extend lower than the loops 36 shown in fig. 4a .
  • the anchoring means 36 shown in fig. 4a are more suitable for anchoring in concrete only.

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Railway Tracks (AREA)
EP07075326A 2007-05-02 2007-05-02 Vorgefertigtes Schienenträgerelement Withdrawn EP1988213A1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP07075326A EP1988213A1 (de) 2007-05-02 2007-05-02 Vorgefertigtes Schienenträgerelement

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP07075326A EP1988213A1 (de) 2007-05-02 2007-05-02 Vorgefertigtes Schienenträgerelement

Publications (1)

Publication Number Publication Date
EP1988213A1 true EP1988213A1 (de) 2008-11-05

Family

ID=38477029

Family Applications (1)

Application Number Title Priority Date Filing Date
EP07075326A Withdrawn EP1988213A1 (de) 2007-05-02 2007-05-02 Vorgefertigtes Schienenträgerelement

Country Status (1)

Country Link
EP (1) EP1988213A1 (de)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2012099473A1 (en) 2011-01-21 2012-07-26 Edilon)(Sedra B.V. Method for manufacturing an embedded rail track
EP2845951A1 (de) * 2013-09-04 2015-03-11 Prefarails Holding Ummantelung für Schienenfahrzeugsschienen
CN108252177A (zh) * 2018-03-19 2018-07-06 上海市城市建设设计研究总院（集团）有限公司 改善有轨电车轨旁沥青路面开裂的加固结构
WO2023065115A1 (en) * 2021-10-19 2023-04-27 Jabez Innovation Limited Railway vibration damping device with cylindrical resilient materials

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1672752A (en) * 1927-10-24 1928-06-05 Fred D Coppock Concrete crossing slab
DE19525325A1 (de) * 1995-07-12 1997-01-16 Clouth Gummiwerke Ag Vollumfassende, schwingungsisolierende und schalldämpfende Lagerung für Eisenbahnoberbauten, insbesondere von Schienenkörpern
EP0854234A1 (de) * 1997-01-16 1998-07-22 Stephane Dirven Schalldämmvorrichtung
WO2001083889A1 (en) * 2000-05-03 2001-11-08 Iron Horse Engineering Co. Rail boot
WO2006032684A1 (fr) * 2004-09-21 2006-03-30 Feronia S.A. Procédé d'enrobage d'un rail pour véhicule ferroviaire.

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1672752A (en) * 1927-10-24 1928-06-05 Fred D Coppock Concrete crossing slab
DE19525325A1 (de) * 1995-07-12 1997-01-16 Clouth Gummiwerke Ag Vollumfassende, schwingungsisolierende und schalldämpfende Lagerung für Eisenbahnoberbauten, insbesondere von Schienenkörpern
EP0854234A1 (de) * 1997-01-16 1998-07-22 Stephane Dirven Schalldämmvorrichtung
WO2001083889A1 (en) * 2000-05-03 2001-11-08 Iron Horse Engineering Co. Rail boot
WO2006032684A1 (fr) * 2004-09-21 2006-03-30 Feronia S.A. Procédé d'enrobage d'un rail pour véhicule ferroviaire.

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2012099473A1 (en) 2011-01-21 2012-07-26 Edilon)(Sedra B.V. Method for manufacturing an embedded rail track
EP2845951A1 (de) * 2013-09-04 2015-03-11 Prefarails Holding Ummantelung für Schienenfahrzeugsschienen
CN108252177A (zh) * 2018-03-19 2018-07-06 上海市城市建设设计研究总院（集团）有限公司 改善有轨电车轨旁沥青路面开裂的加固结构
WO2023065115A1 (en) * 2021-10-19 2023-04-27 Jabez Innovation Limited Railway vibration damping device with cylindrical resilient materials

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