Analytical Investigation of Saddle Connections for Overhead Sign Trusses with Respect to Strength and Fatigue Performance

The Kansas DOT is currently using a new saddle-type connection for use in highway overhead sign trusses between the truss and end support columns. Compared with the coupler connections introduced in the early 1970s, the saddle connections are easier to inspect and appear to offer better strength and fatigue performance. However, no quantitative understanding of these saddle connections exists regarding their mechanical performance, including ultimate strength and fatigue susceptibility, compared to the coupler connections. As a result, KDOT does not have a procedure to verify ultimate and fatigue strengths of these details in the design process. This project aims to investigate the ultimate and fatigue strength of the saddle connections though finite element (FE) analysis.


    • Status: Completed
    • Funding: $47,405.00
    • Contract Numbers:

      K-TRAN: KU-18-1



    • Sponsor Organizations:

      University of Kansas, Lawrence

      Department of Civil Engineering, 2006 Learned Hall
      Lawrence, KS  United States  66045-2225
    • Managing Organizations:

      Kansas Department of Transportation

      Eisenhower State Office Building
      700 SW Harrison Street
      Topeka, KS  United States  66603-3754
    • Project Managers:

      Peterson, Karen

    • Performing Organizations:

      Kansas State University

      Department of Civil Engineering
      Manhattan, KS  United States  66506-5000
    • Principal Investigators:

      Li, Jian

    • Start Date: 20170701
    • Expected Completion Date: 20200630
    • Actual Completion Date: 20210827

    Subject/Index Terms

    Filing Info

    • Accession Number: 01662451
    • Record Type: Research project
    • Source Agency: Kansas Department of Transportation
    • Contract Numbers: K-TRAN: KU-18-1, RE-0732-01, C2108
    • Files: RIP, STATEDOT
    • Created Date: Mar 8 2018 12:13PM