The properties of the ballast bed and the savings in maintenance obtained by using a concrete bed in its place are apparasied. For 300 km/h service, the use of U 80 rails of 60 kg/m mounted on concrete blocks with cross-ties and double-elastic fastenings is recommended. Such fastenings allow a greater degree of vertical movement of the rail and the sleepers would be laid on a ballast bed 35-cm deep. Japanese experience with continuous welded track and 53.5 kg/m rail mounted on pre-stressed monlithic concrete sleepers with double-elastic French-type fastenings is cited. Mention is made of the problem of ballast and the continual maintenance it incurs. Swiss studies on ballastless track for tunnels is reviewed.

  • Corporate Authors:

    Temple Press Limited

    161-166 Fleet Street
    Longon EC4,   England 
  • Publication Date: 1970-9-18

Media Info

  • Features: Photos; References;
  • Pagination: p. 710-711
  • Serial:

Subject/Index Terms

Filing Info

  • Accession Number: 00037422
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Nov 16 1976 12:00AM