Modeling the lateral load distribution for multiple concrete crossties and fastening systems.

Details

• Creators:
  Andrawes, Bassem
• Corporate Creators:
  University of Illinois at Urbana-Champaign. Department of Civil and Environmental Engineering
• Corporate Contributors:
  National University Rail Center (U.S.) ; United States. Department of Transportation. University Transportation Centers (UTC) Program
• Subject/TRT Terms:
  • Prestressed concrete ties
  • Performance measurement
  • Finite element method
  • Wheel loads
  • Design standards
  • Fastenings
• Publication/ Report Number:
  NURail2014-UIUC-R09
• Resource Type:
  Tech Report
• Geographical Coverage:
  United States
• Corporate Publisher:
  National University Rail Center (U.S.)
• Abstract:
  The objective of this project was to further investigate the performance of concrete crosstie and ; fastening system under vertical and lateral wheel load using finite element analysis, and explore ; possible improvement for current track design standard. The damage of fastening system is one ; of the most prevalent failure causes for concrete crosstie track, however the current AREMA ; design standard only includes evaluative tests for the fastening system, rather than a mechanistic ; design approach. To improve the current design approach, the vertical and lateral load path ; through the track structure and the component demand within the concrete crosstie and fastening ; system should be further investigated. The research work included the following tasks: 1) developing a detailed finite element model of ; the prestressed concrete crosstie and fastening system based on the manufacturer’s design, 2) ; validating the component models of the rail clip and the prestressed concrete crosstie based on ; manufacturer’s information and crosstie flexural test, 3) validating the single-crosstie-fastening system ; model based on laboratory experimentation, 4) validating the multiple crosstie model ; based on the field experimentation conducted on instrumented track, 5) validating the multiple ; crosstie model based on full-scale laboratory experimentation under asymmetric loading ; scenarios, 6) using the validated FE model to conduct parametric studies about the failure ; mechanisms of the concrete crosstie and fastening system, and the effect of critical design ; parameters on the performance of the track structure.
  More +
• Format:
  PDF
• Funding:
  DTRT12-G-UTC18 (Grant 1)
• Download URL:
  https://rosap.ntl.bts.gov/view/dot/32200/dot_32200_DS1.pdf
• File Type:
  [PDF - 1.34 MB]
• Collection(s):
  University Transportation Centers ; US Transportation Collection
• Main Document Checksum:
  urn:sha-512:6dfbbf8bef5ecd595131f5bffd5a11a74ac00365e49a7cf5e44dbc763a7461098d3f952dc387bc11778dac06d2cd8824c97e2e38a7eac65cd448c0511833c516