AN IMPROVED ANALYSIS OF RAIL STRESSES AND RAIL-TIE CONTACT FORCES, FOR A CROSS-TIE TRACK

Presently, the dominant method for calculating rail stresses and rail-tie contact forces is based on the model of a beam on a Winkler base. One shortcoming of this analysis is that it neglects the effect of the moments which the ties exert on the rails, since when the rails deflect in the vertical plane the cross-ties in addition to displacing vertically also rotate about their axes and the ballast resists these rotations. The paper presents an improved analysis of this problem. It also suggests a simple method for the determination of the track parameters which enter the analysis and demonstrates its use on actual track test data. Paper concludes with a comparison of analytical and track test data, in order to establish the accuracy of the proposed analysis.

  • Supplemental Notes:
    • Sponsored in part by Association of American Railroads, Chicago, IL. Technical Center.
  • Corporate Authors:

    Princeton University

    Department of Civil Engineering
    Princeton, NJ  USA  08450

    Association of American Railroads Research Center

    3140 South Federal Street
    Chicago, IL  USA  60616

    National Science Foundation

    Division of Engineering, 1800 G Street, NW
    Washington, DC  USA  20550
  • Authors:
    • Kerr, A D
  • Publication Date: 1978-1

Media Info

  • Pagination: 19 p.

Subject/Index Terms

Filing Info

  • Accession Number: 00198594
  • Record Type: Publication
  • Source Agency: National Technical Information Service
  • Report/Paper Numbers: 78-TR-1
  • Contract Numbers: NSF-ENG77-09156
  • Files: TRIS
  • Created Date: Oct 17 1979 12:00AM