THE DIRECT FIXATION FASTENER AT WORK

Today's trains impose not only higher mechanical loads on track but vibrational inputs which, even when of short duration, are capable of damaging track components. The direct fixation (or resilient) fasteners developed with concrete cross ties or slabs are characterized by a clip which changes the dynamic characteristics of the entire track structure. The problem of lift in the track must be countered in the design of the fastener system. Because the clip generates only toe load to prevent longitudinal rail movement and to prevent separation of rail and tie, the tie pad controls the spring rate of the assembly and must be carefully selected. The author says further work must be done to resolve dynamic response of the track system.

  • Availability:
  • Corporate Authors:

    Simmons-Boardman Publishing Corporation

    508 Birch Street
    Bristol, CT  USA  06010
  • Authors:
    • Hamilton, W R
  • Publication Date: 1980-10

Media Info

  • Features: Photos;
  • Pagination: p. 28-34
  • Serial:

Subject/Index Terms

Filing Info

  • Accession Number: 00322790
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Dec 30 1980 12:00AM