According to the authors, modern systems of track building and renewal can be classified into two large groups: systems using prefabricated track panels; systems with direct laying of sleepers on the ballast and fastening of the rails on the sleepers. For application of the first group of systems, two sites are necessary: one for assembly and the other for dismantling, which should be organized taking several factors into account: expenses, manpower, mechanization of the sites and frequency of train circulation. In this particular group, the authors mention the system used by SNCF which achieves the complete laying of track at a speed of 350 m/h. The integrated systems in the second group do not need the above indicated sites. However, special mention should be made of the system used by the "SECMAFER" gangs, presently adopted by the Mexican National Railways, the replace the track fastened with sleeper-screws by the track with an elastic pad.

  • Authors:
    • Carrasco, M
    • Palmer, M
  • Publication Date: 1975-4


  • Spanish

Media Info

Subject/Index Terms

Filing Info

  • Accession Number: 00129413
  • Record Type: Publication
  • Source Agency: International Union of Railways
  • Report/Paper Numbers: No. 15
  • Files: TRIS
  • Created Date: Feb 19 1976 12:00AM