A three-dimensional finite-element model of a railway track structure that includes rails, ties, and ballast is described. The material properties used for the cohesionless ballast and subballast are obtained from triaxial tests. A nonlinear, incremental numerical procedure based on a bicubical-spline stress-strain approximation is being developed for use in the finite-element analysis. At present, the program is capable of linear analysis only. The behavior of the track structure under static loading is predicted by using the linear analysis. Comparison is made between different ballast geometries on both typical sand and clay subgrades. The results show the potential value of a nonlinear analysis.

Media Info

  • Media Type: Print
  • Features: Figures; References;
  • Pagination: pp 1-6
  • Monograph Title: Mechanics of track support, piles and geotechnical data
  • Serial:

Subject/Index Terms

Filing Info

  • Accession Number: 00315292
  • Record Type: Publication
  • ISBN: 0309029880
  • Files: TRIS, TRB
  • Created Date: Sep 16 1980 12:00AM