Technical Reports

Experimental Investigations of Dynamic Buckling of CWR Tracks

  • 01
  • Nov
  • 1986
AUTHOR: Federal Railroad Administration; G. Samavedam; A. Kish; D. Jeong
SUBJECT: Track, Tracks & Structures, Track/Train Interactions
KEYWORDS: Track buckling, buckling, welded track
ABSTRACT: Thermal Buclking of railroad tracks in the lateral plane is an important problem in the design and maintenance of continous welded rail (CWR) tracks. The severity of the problem is mainfested through the large number of derailments which are attributable to track buckling, indicating a need for developing better control for the allowable safe temperature increase for CWR tracks. The work reported here is a part of a major investigation conducted by the Transportation Systems Center for the Federal Railroad Administration on the thermal buckling of CWR tracks in the lateral plane with the objective of devloping guidelines and recommendations for buckling prevention. This report presents the results of a series of track dynamic buckling tests investigating the influences of vehicle induced loads on the thermal buckling behavior tangent and curved tracks. Comparisons between theoretical predictions and experimental results are given and conclusions of practical signifcance regarding the buckling safety of CWR tracks under dynamic conditions are presented.