Next-generation foundations for special trackwork : phase I.

Details

• Creators:
  Shu, Xinggao ; Davis, David ; Akhtar, Muhammad
• Corporate Creators:
  Transportation Technology Center, Inc.
• Subject/TRT Terms:
  • Foundations
  • Dynamic loads
  • Frogs (Railroads)
  • Rolling contact
  • Failure
  • Design
  • Ballast (Railroads)
  • Parametric analysis
• Publication/ Report Number:
  DOT/FRA/ORD-13/10
• Resource Type:
  Tech Report
• Geographical Coverage:
  United States
• Corporate Publisher:
  United States. Federal Railroad Administration. Office of Research and Development
• NTL Classification:
  NTL-RAIL TRANSPORTATION-RAIL TRANSPORTATION
• Abstract:
  This report reviews the dynamic load environment and failure modes of special trackwork frog foundations. Key measurements taken under a 39,000-pound wheel load traffic at the Facility for Accelerated Service Testing were used to develop and calibrate a vehicle-track model. Parametric studies show the following: (1) for new crossings without any track differential settlement, optimal foundation stiffness and damping could lower the current wheel-rail (W-R) impact by 30 percent, (2) for worn crossings, W-R impact increases significantly with foundation stiffness and damping; and (3) W-R impact increases with track differential settlement. On the basis of the modeling results, this report proposes preliminary design and maintenance guidelines for improving crossing performances.
• Format:
  PDF
• Funding:
  DTFR53-00-C-00012 Task Order 265
• Download URL:
  https://rosap.ntl.bts.gov/view/dot/26252/dot_26252_DS1.pdf
• File Type:
  [PDF - 2.49 MB]
• Collection(s):
  US Transportation Collection
• Main Document Checksum:
  urn:sha-512:5e53e02f1caf368a980a06ec87e9349fbda2c971873c12ae58f55585282bf8c40a8f75aea3411dfc470c431442196cf72b078d0477bb51f78a2afc58f556ddf8