Advanced Model for Predicting Buckling in Rails

Details

• Creators:
  Allen, David H. ; Liu, Ting-Ming
• Corporate Creators:
  Texas Transportation Institute. University Transportation Center for Railway Safety
• Corporate Contributors:
  United States. Department of Transportation. University Transportation Centers (UTC) Program ; United States. Department of Transportation. Office of the Assistant Secretary for Research and Technology ; MxV Rail
• Subject/TRT Terms:
  Buckling Computer Models Construction And Maintenance Environmental Impacts Failure Human Factors Railroad Rails Railroad Tracks Safety Technology Transportation

  More +
• Publication/ Report Number:
  UTCRS-TAMU-I1CY24
• Resource Type:
  Tech Report
• Geographical Coverage:
  United States
• Edition:
  June 1, 2024 – August 31, 2025
• Corporate Publisher:
  Texas Transportation Institute. University Transportation Center for Railway Safety
• Abstract:
  It is well-known that track buckling is one of the most commonplace causes of train derailments. Accordingly, with funding provided by the USDOT UTC program and the Technology Transportation Center, Inc., we have now completed developing a Beta-version track buckling model for deployment by U.S. Railroad Companies as a tool for predicting track buckling. This new generation of our buckling model utilizes a displacement incrementation formulation that provides the ability to predict the post-buckled response of rails. Note that this is a significant advancement over currently deployed track buckling models. Furthermore, our track buckling model accounts for the effects of the following on track buckling: both longitudinal and lateral track walk; rail neutral temperature (RNT); both lateral and longitudinal nonlinear crosstie aggregate interfacial friction; track modulus; nonlinear track liftoff; and broken spikes. In addition, it is sufficiently robust to be capable of accounting for additional environmental causes, and we are working together with MxV Rail on a regular basis to supply predictions of these effects for their use and potential supply to the U.S. Rail Industry. Given these advanced capabilities, it is anticipated that track engineers will be able to dramatically mitigate track failures due to buckling. The results provided herein are from a paper currently in submission for publication in a refereed journal.
• Format:
  PDF
• Funding:
  69A3552348340
• Collection(s):
  University Transportation Centers
• Main Document Checksum:
  urn:sha-512:949ff74062a0c1b9923644d6fcfb9eed865fda49ac85aac5268777ee91997d69529f02799fda6650ed4bf064dcb182e2d13e92bbf733aae8c7ee23a83c998271
• Download URL:
  https://rosap.ntl.bts.gov/view/dot/88686/dot_88686_DS1.pdf
• File Type:
  [PDF - 2.08 MB ]