A Semi-Flexible Composite Trackbed Material for Stiffness Transition in Bridge Approaches and Its Application

The objective of this study is to develop a prototype “stiffness transition” trackbed material and evaluate its engineering properties with laboratory tests. A self-compacting semi-flexible composite material (SFCM) will be developed for easy track modulus adjustment under different stiffness transition scenarios determined from the 3D dynamic track “Sandwich Model”. Controlling the modulus of trackbed with customizable engineering properties can reduce dynamic loading impact to both highway and bridge structures, and lead to increased life and improved safety of track components.

• Supplemental Notes:
  • Project funded from core funds award

Project

• Status: Active
• Funding: $202008
• Sponsor Organizations:

  Office of the Assistant Secretary for Research and Technology

  University Transportation Centers Program
  Department of Transportation
  Washington, DC  United States  20590
• Managing Organizations:

  Center for Integrated Asset Management for Multimodal Transportation Infrastructure Systems (CIAMTIS)

  Pennsylvania State University
  University Park, PA  United States  16802
• Project Managers:

  Donnell, Eric

  Rajabipour, Farshad

• Principal Investigators:

  Shen, Shihui

• Start Date: 20190311
• Expected Completion Date: 20200830
• Actual Completion Date: 20200930
• USDOT Program: University Transportation Centers

Subject/Index Terms

• TRT Terms: Bridge approaches; Composite materials; Education; Laboratory tests; Outreach; Prototypes; Railroad tracks; Stiffness
• Subject Areas: Bridges and other structures; Materials; Railroads;

Filing Info

• Accession Number: 01699758
• Record Type: Research project
• Source Agency: Center for Integrated Asset Management for Multimodal Transportation Infrastructure Systems (CIAMTIS)
• Files: UTC, RIP
• Created Date: Mar 25 2019 4:53PM