DIRECT METHOD FOR ESTIMATING PRESTRESS LOSSES

A rational method for estimating prestress losses in pretensioned concrete members is presented. The method is based on linking experimentally developed stress-strain-time relationships of steel and concrete materials. It enables a direct determination of stress and strain distributions in a member at any time within the service life of the member and avoids the need for step-by-step methods. Wide ranges of variation for concrete material characteristics and other design factors are permitted. The new method is illustrated by a practical design problem. Comparisons with 2 recently proposed procedures show good agreement of results.

• Record URL:
  • http://onlinepubs.trb.org/Onlinepubs/trr/1975/547/547-004.pdf
• Summary URL:
  • https://scholar.google.com/scholar_lookup?title=DIRECT+METHOD+FOR+ESTIMATING+PRESTRESS+LOSSES&author=T.+Huang&publication_year=1975
• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/isbn/0309024548
• Supplemental Notes:
  • Publication of this paper sponsored by Committee on Concrete Bridges. Distribution, posting, or copying of this PDF is strictly prohibited without written permission of the Transportation Research Board of the National Academy of Sciences. Unless otherwise indicated, all materials in this PDF are copyrighted by the National Academy of Sciences. Copyright © National Academy of Sciences. All rights reserved.
• Authors:
  • Huang, Ti
• Conference:
  • 54th Annual Meeting of the Transportation Research Board
  • Location: Washington District of Columbia
  • Date: 1975-1-13 to 1975-1-17
• Publication Date: 1975

Media Info

• Media Type: Print
• Features: Figures; References; Tables;
• Pagination: pp 37-46
• Monograph Title: Concrete and Steel Bridges
• Serial:
  • Transportation Research Record
  • Issue Number: 547
  • Publisher: Transportation Research Board
  • ISSN: 0361-1981

Subject/Index Terms

• TRT Terms: Deflection; Deformation curve; Estimating; Methodology; Prestressed concrete; Prestressing; Service life; Time
• Uncontrolled Terms: Prestress loss
• Subject Areas: Bridges and other structures; Design; Highways;

Filing Info

• Accession Number: 00128546
• Record Type: Publication
• ISBN: 0309024548
• Files: TRIS, TRB
• Created Date: May 14 1976 12:00AM