Technical Reports

Supplemental Tests for Track Panel Shift Investigations

  • 01
  • Jan
  • 1999
AUTHOR: Randal L. Thompson, Corey Pasta, Previn Marquez
SUBJECT: Evaluation
KEYWORDS: Continuous Welded Rail, Track Panel Shift Behavior,
ABSTRACT: Volpe National Transportation Systems Center (VNTSC) has created a model to predict, among other things, panel shift behavior of track structure. A series of tests was performed in October 1998 by Transportation Technology Center, Inc. (TTCI), a subsidiary of the Association of American Railroads, in conjunction with VNTSC to validate that model. Funds for these tests were jointly provided by the Federal Railroad Administration and the AAR under the Vehicle Track Systems- Vehicle/Track Performance Strategic Research Initiative. The following tests were conducted for this purpose: (1) Tie/Ballast resistance under lateral loading and unloading using single tie push tests, (2) the nonlinear friction coefficient between loaded ties and ballast, (3) vertical foundation modulus, (4) track shift behavior for wood and concrete tie track with continuous welded rail during repeated passes of controlled axle loading
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