Determination of U-Bolt Connection Load Capacities in Overhead Sign Support Structures

The objective of this project is to develop effective and efficient calculation methodologies to realistically estimate the capacity of the U-bolt connections specified in the actual SOST design standards. To achieve the goal, an experimental program is proposed to load test U-bolt connections of the same dimensional and material properties as used in the actual SOST design standards. A numerical program is also proposed to assist in understanding the actual behaviors and failure modes of the U-bolt connections after the numerical models are validated against the load test data. Based on the experimental and numerical results, simplified empirical formulae will be developed for the purposes of estimating the capacity of U-bolt connections. Five tasks are proposed to meet the objective of the project. These tasks will be performed in close communication with a Technical Advisory Committee (TAC) that will be developed as one of the work tasks. Key staff from the Bridge Engineering Center (BEC) at the Institute for Transportation (InTrans) at Iowa State University (ISU) will perform the research. Tasks are: Task 1 – Establish a TAC; Task 2 – Experimental Program; Task 3 – Development and Validation of Finite Element Models; Task 4 – Parametric Studies and Formula development; and Task 5 – Final Report.

    Language

    • English

    Project

    • Status: Active
    • Funding: $49999
    • Contract Numbers:

      Addendum 638

      ISU Proposal 140935

    • Sponsor Organizations:

      Iowa Department of Transportation

      800 Lincoln Way
      Ames, IA  United States  50010
    • Managing Organizations:

      Iowa State University, Ames

      Center for Transportation Research and Education
      2711 South Loop Drive, Suite 4700
      Ames, IA  United States  50010-8664
    • Project Managers:

      Adcock, Harold

    • Performing Organizations:

      Iowa State University, Ames

      Center for Transportation Research and Education
      2711 South Loop Drive, Suite 4700
      Ames, IA  United States  50010-8664
    • Principal Investigators:

      Phares, Brent

    • Start Date: 20180101
    • Expected Completion Date: 20190630
    • Actual Completion Date: 0

    Subject/Index Terms

    Filing Info

    • Accession Number: 01656425
    • Record Type: Research project
    • Source Agency: Iowa Department of Transportation
    • Contract Numbers: Addendum 638, ISU Proposal 140935
    • Files: RiP, STATEDOT
    • Created Date: Jan 12 2018 12:02PM