EP0604202A2 - Railway sleeper - Google Patents

Railway sleeper Download PDF

Info

Publication number
EP0604202A2
EP0604202A2 EP93310399A EP93310399A EP0604202A2 EP 0604202 A2 EP0604202 A2 EP 0604202A2 EP 93310399 A EP93310399 A EP 93310399A EP 93310399 A EP93310399 A EP 93310399A EP 0604202 A2 EP0604202 A2 EP 0604202A2
Authority
EP
European Patent Office
Prior art keywords
sleeper
sheet metal
under surface
tunnel
tunnel 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Withdrawn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
EP93310399A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0604202A3 (cs
Inventor
Thomas William Shepheard
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.)
Balfour Beatty PLC
Original Assignee
BICC PLC
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 BICC PLC filed Critical BICC PLC
Publication of EP0604202A2 publication Critical patent/EP0604202A2/en
Publication of EP0604202A3 publication Critical patent/EP0604202A3/xx
Withdrawn legal-status Critical Current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
    • E01B3/00—Transverse or longitudinal sleepers; Other means resting directly on the ballastway for supporting rails
    • E01B3/16—Transverse or longitudinal sleepers; Other means resting directly on the ballastway for supporting rails made from steel
    • E01B3/20—Sleeper construction for special purposes, e.g. with openings for ballast working

Definitions

  • This invention relates to railway sleepers When track is laid in tunnels, it is conventional to lay sleepers across the tunnel so that the ends of the sleepers bear on the tunnel wall, and to locate a pad at the end of each sleeper in order to distribute stress applied by the sleeper on the tunnel wall. We have found, however, that the stress exerted on the wall can still lead to damage of the wall.
  • a railway sleeper having an under surface that is curved in order to enable the sleeper to be positioned in a tunnel so that a major part of the under surface is in contact with the tunnel wall.
  • the sleeper is designed so that at least 75% of the under surface, and especially substantially the entire under surface, is capable of bearing on the tunnel wall in use. This has the advantage that the stresses applied by the sleeper on the tunnel wall are substantially reduced with respect to existing designs, with consequential reduction or even elimination of damage to the tunnel wall by the sleeper.
  • the sleeper may conveniently be formed from sheet metal.
  • the central part of the sleeper, spanning the rails in use is preferably formed from a single strip of sheet metal that is curved to lie flat on the tunnel wall.
  • This construction has the advantage that it has a very low profile in the central part of the sleeper and exhibits little or no obstruction for example to personnel walking along the track.
  • the sleepers can have a relatively low weight and can easily be transported, installed and removed.
  • a baseplate for a rail of the track wi II be provided in the region of each of the sleeper, the baseplate preferably also being formed from sheet metal. It is possible for the baseplates to be formed from the same sheet metal as that of the remainder of the sleeper, for example by folding back the ends of the sleeper preform to form a pair of flat surfaces, but in the preferred design, the baseplate is formed from sheet metal that is thicker than that forming the remainder of the sleeper.
  • the baseplates may be formed from steel having a thickness of from 12 to 15mm while the remainder may be formed from steel having a thickness in the range of 8 to 12mm.
  • a sleeper 1 according to the present invention comprises a base 2 that spans the distance between the rails (one such rail 3 being shown in phantom), and a pair of baseplates 4 and 5 that are located at either end of the base 2.
  • the base 2 is curved to form a segment of a circle of radius 1.22m which corresponds to the internal radius of the tunnel in which the sleeper will be used.
  • Each baseplate 4 and 5 is generally in the shape of an upturned U having one side arm 6 that is longerthan the other side arm 6' so that the central part 7 thereof that forms a base for the rails between two locating ribs 8 and 9 will be horizontal.
  • a supporting rib 10 is formed in the steel sheet forming the base 2 of the sleeper beneath the central part 7 of each baseplate 4 and 5 so that is apex abuts the under surface of the central part and is directly below the centre of the rail placed on the baseplate.

Landscapes

  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Lining And Supports For Tunnels (AREA)
EP93310399A 1992-12-22 1993-12-21 Railway sleeper Withdrawn EP0604202A2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB9226651 1992-12-22
GB929226651A GB9226651D0 (en) 1992-12-22 1992-12-22 Railway sleeper

Publications (2)

Publication Number Publication Date
EP0604202A2 true EP0604202A2 (en) 1994-06-29
EP0604202A3 EP0604202A3 (cs) 1994-08-31

Family

ID=10726977

Family Applications (1)

Application Number Title Priority Date Filing Date
EP93310399A Withdrawn EP0604202A2 (en) 1992-12-22 1993-12-21 Railway sleeper

Country Status (2)

Country Link
EP (1) EP0604202A2 (cs)
GB (2) GB9226651D0 (cs)

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE598188C (de) * 1934-06-07 Kurt Wiesinger Rollender Zwanglauf fuer Schienenfahrzeuge
FR927823A (fr) * 1942-02-14 1947-11-11 Traverses de chemins de fer et autres pièces en béton armé précontraint; procédé et appareil pour la fabrication de ces pièces
AU534253B2 (en) * 1979-11-27 1984-01-12 Omark Industries, Inc. Steel rail sleeper

Also Published As

Publication number Publication date
GB2273728B (en) 1995-12-06
EP0604202A3 (cs) 1994-08-31
GB2273728A (en) 1994-06-29
GB9226651D0 (en) 1993-02-17
GB9326058D0 (en) 1994-02-23

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