Forensic Testing of Post Tensioned Concrete Girders

All across the United States, various state departments of transportation are faced with the problem of an aging infrastructure and insufficient resources to meet the needs. As a result, many bridges are being subjected service lives that are longer than originally anticipated when originally designed. Understanding the behavior of this aging infrastructure is essential to making judicious decisions with the limited resources. With the reconstruction of the I-15 Interstate near Provo, Utah many bridge replacements were required. As part of a previous University Transportation Center (UTC) project, four high strength, self consolidated prestressed concrete girders were obtained an tested to determine residual prestress force, flexural capacity and shear capacity. During the procurement of these girders researchers discovered and obtained a group of post tensioned concrete girders that are over 40 years old. These girders were post tensioned using three curved bars. The girders have a wider end block for the post tensioning anchorage. These girders are unique in many ways and presented a rare opportunity to evaluate the long term behavior of post-tension bridge girders. There girders were tested along with the prestressed girders but the analysis has not been performed. There is very little research that has been done on this type of girder and the results will be valuable for state and federal agencies as well as other researchers. This research is to analyze and compare the measured results with current design procedures and nonlinear finite-element methodologies.


  • English


  • Status: Completed
  • Contract Numbers:



  • Sponsor Organizations:

    Research and Innovative Technology Administration

    University Transportation Centers Program
    1200 New Jersey Avenue
    Washington, DC  United States  20590

    Center for Advanced Infrastructure and Transportation

    Rutgers University
    100 Brett Rd
    Piscataway, NJ  United States  08854-8058
  • Project Managers:

    Szary, Pat

  • Performing Organizations:

    Utah State University Transportation Center

    Utah State University
    Logan, UT  United States  84322-4110
  • Principal Investigators:

    Barr, Paul

  • Start Date: 20130701
  • Expected Completion Date: 0
  • Actual Completion Date: 20141030
  • Source Data: RiP Project 34922

Subject/Index Terms

Filing Info

  • Accession Number: 01543483
  • Record Type: Research project
  • Source Agency: Center for Advanced Infrastructure and Transportation
  • Contract Numbers: DTRT12-G-UTC16, CAIT-UTC-033
  • Files: UTC, RiP
  • Created Date: Nov 15 2014 1:01AM