Prestress Losses and Development of Short-term Data Acquisition System for Bridge Monitoring

The University Transportation Center at Utah State University sponsors research through the Federal Highway Administration’s University Transportation Center Program. The purpose of this research is to advance technology and expertise in transportation-related fields. This includes research on the best methods to design, monitor, and inspect bridges. When a vehicle drives over a bridge, each bridge girder carries a portion of the vehicle’s weight. This load causes strain in the bottom of the bridge girders. However, depending on where the vehicle is located on the bridge, some bridge girders carry a higher percentage of the vehicle’s load. This study investigated the amount of strain typical vehicles caused in the bottom of each girder as they travel across the bridge. This research also examined the maximum strains in the bridge girders due to vehicle loads, which is of interest in girder design. In order to resist these vehicle loads, the effective prestress must be accurately determined. This project also quantified the effective prestress in an exterior and interior girder. These measured prestress forces are compared with predicted values in accordance to the American Association of State Highway and Transportation Officials (AASHTO) Load and Resistance Factor Design (LRFD) specifications.

  • Record URL:
  • Supplemental Notes:
    • This document was sponsored by the U.S. Department of Transportation, University Transportation Centers Program.
  • Corporate Authors:

    Utah State University, Logan

    Department of Civil and Environmental Engineering, 4110 Old Main Hill
    Logan, UT  United States  84322-4110

    Mountain-Plains Consortium

    North Dakota State University
    P.O. Box 6050, Department 2880
    Fargo, ND  United States  58108-6050

    Office of the Assistant Secretary for Research and Technology

    University Transportation Centers Program
    Department of Transportation
    Washington, DC  United States  20590
  • Authors:
    • Pace, Justin M
    • Barr, Paul J
    • Powelson, Phillip
  • Publication Date: 2019-6

Language

  • English

Media Info

  • Media Type: Digital/other
  • Features: Appendices; Figures; Photos; References; Tables;
  • Pagination: 67p

Subject/Index Terms

Filing Info

  • Accession Number: 01713722
  • Record Type: Publication
  • Report/Paper Numbers: MPC 19-387
  • Files: UTC, TRIS, ATRI, USDOT
  • Created Date: Aug 1 2019 8:52AM