TECHNIQUES FOR MEASURING EXISTING LONG-TERM STRESSES IN PRESTRESSED CONCRETE BRIDGES. VOLUME III: EXECUTIVE SUMMARY

Various stress measurement techniques were evaluated in this study. The evaluation included a state-of-the-art review of existing techniques and analytical studies of these techniques. Based on analytical results, the flat-jack direct stress measurement technique was evaluated in laboratory and field tests. Based on these tests, a manual of instruction was written to describe the equipment and procedures required to obtain reliable direct stress measurement. This is the Executive Summary which summarizes the findings of this research project.

• Supplemental Notes:
  • See also Volume I - FHWA-RD-88-160 - Analytical, Laboratory, and Field Studies and Volume II - FHWA-RD-88-161 - Manual of Instruction.
• Corporate Authors:

  Construction Technology Laboratories, Inc.

  5400 Old Orchard Road
  Skokie, IL  United States  60077-1030

  Federal Highway Administration

  Turner-Fairbank Highway Research Center, 6300 Georgetown Pike
  McLean, VA  United States  22101
• Authors:
  • Overman, T R
  • Hanson, N W
  • Rabbat, B G
  • Morgan, B J
  • Zwiers, R I
  • SHIU, K N
• Publication Date: 1990-2

Media Info

• Features: Figures; Photos; References;
• Pagination: 19 p.

Subject/Index Terms

• TRT Terms: Bridges; Field tests; Laboratory tests; Lifting equipment; Manuals; Measurement; Methodology; Prestressed concrete; State of the art studies; Stresses; Time duration
• Uncontrolled Terms: Long term
• Old TRIS Terms: Flat jacks
• Subject Areas: Bridges and other structures; Design; Highways; I24: Design of Bridges and Retaining Walls;

Filing Info

• Accession Number: 00495671
• Record Type: Publication
• Report/Paper Numbers: FHWA-RD-88-159, CR-4995-4321-S, NCP 3D1a3022
• Contract Numbers: DTFH61-82-C-00020
• Files: TRIS, USDOT
• Created Date: Jul 31 1990 12:00AM