Upgrading rail fastenings on older sleepers

A new type of rail fastening is described, which can be fitted to older types of sleepers to improve electrical insulation and allow the use of more resilient rail pads. The PANDROL e-Plus system is a further development of the tried and tested e-clip system that has been an industry standard for nearly 25 years, but has the added advantage of utilizing a two piece insulator, which has proven so successful in the PANDROL FASTCLIP system. The e-plus system incorporates a cylindrical toe insulator which is supplied fitted to the toe of the clip, the advantage of this is that it lets the toe of the clip rotate by approx. 10 degrees, thus when the assembly is placed under traffic loads, the toe insulator rotates slightly and removes the "pinching" effect that generates the increase in clip front arch strains. Initial track trials were carried out on JR-East tracks at Narita Japan in 1995. The results from the tests indicate that the front arch strains in the e-Plus fastening system are, on average, 58% lower than those for the existing e2009 rail clip. At present Pandrol is in the process of developing an e-Plus option for both the Railtrack F27 concrete sleeper (and derivatives) and the W402 steel sleeper. Both of these systems have been used for many years on the former British Rail network, and have been inherited by Railtrack without improvement. For the covering abstract see ITRD E125214.

Language

  • English

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Filing Info

  • Accession Number: 01011744
  • Record Type: Publication
  • Source Agency: Transport Research Laboratory
  • ISBN: 0-947644-43-1
  • Files: ITRD
  • Created Date: Dec 19 2005 3:28PM