Bridge Approach Remedies Implemented at Western Mega Site

Details

• Creators:
  Maal, Luis ; Carr, Gary
• Corporate Creators:
  United States. Federal Railroad Administration. Office of Railroad Policy and Development
• Subject/TRT Terms:
  • Ballast mats
  • Bridge approaches
  • Concrete ties
  • Damping (Physics)
  • Maintenance of way
  • Rolling contact
  • Tie pads
  • Heavy axle loads
  • Million gross tons
  • Railroad track bridge interaction
  More +
• Publication/ Report Number:
  RR 17-10
• Resource Type:
  Tech Report
• Geographical Coverage:
  United States ; Nebraska
• TRIS Online Accession Number:
  01645983
• Corporate Publisher:
  United States. Federal Railroad Administration
• Abstract:
  As part of the heavy axle load (HAL) revenue service mega site testing program, the Transportation Technology Center, Inc. (TTCI) has worked closely with the Union Pacific Railroad (UP) to address bridge approach problems under HAL operations. The testing program targeted two bridge locations at the western mega site (located near Ogallala, NE, on a heavy haul coal route of UP) for remediation and long-term performance monitoring. One location was selected in September 2007, while the other was selected in June 2009. Before remediation, these two locations required localized maintenance work on a quarterly basis (approximately 63 Million Gross Tons MGT) due to excessive track geometry degradation, mud pumping, and track component failure-see Figure 1. After remediation, no localized maintenance (except regularly programmed surfacing operations for the entire line) was required for more than 1,000 MGT, which indicated that the problems were effectively addressed.
• Content Notes:
  Research Results RR 17-10 September 2017
• Format:
  PDF
• Download URL:
  https://rosap.ntl.bts.gov/view/dot/35532/dot_35532_DS1.pdf
• File Type:
  [PDF - 503.08 KB]
• Collection(s):
  Federal Railroad Administration
• Main Document Checksum:
  urn:sha256:17a31d1f45b7d12c562f040c92151d6d8e910cbe8eaf2eea1588d916e27f73cf