PRESTRESS LOSSES OF IN-SERVICE HIGHWAY BRIDGE MEMBERS - A LITERATURE SURVEY

The report presents a survey of literature concerning the prestress loss characteristics of in-service bridge members in comparison with those of laboratory specimens. In Chapters 2, 3, and 4 respectively, findings by previous researchers related to camber and deflection, shrinkage and creep, and prestress losses are presented and discussed. Chapter 5 provides a brief summary, and shows the need for further research. The work was done as part of a research project entitled 'Evaluation of Prestress Loss Characteristics of In-Service Bridge Beams.' This project is aimed at establishing a comparison between the behavior of laboratory specimens and that of in-service structural members, and to formulate necessary adjustments to a previously developed procedure for estimating prestress losses in pretensioned bridge members.

• Corporate Authors:

  Lehigh University

  Fritz Engineering Laboratory
  Bethlehem, PA  United States  18015

  Federal Highway Administration

  1200 New Jersey Avenue, SE
  Washington, DC  United States  20590

  Pennsylvania Department of Transportation

  Commonwealth and Forster Streets
  Harrisburg, PA  United States  17120
• Authors:
  • Huang, T
  • Kory, A J
• Publication Date: 1974-9

Media Info

• Pagination: 31 p.

Subject/Index Terms

• TRT Terms: Beams; Bridge members; Concrete construction; Creep; Creep properties; Curvature; Deflection; Highway bridges; Prestressed concrete; Prestressing; Pretensioning; Shrinkage; Stresses; Structural analysis; Structural engineering; Structural members; Tension
• Uncontrolled Terms: Prestress loss; Tensile stress
• Old TRIS Terms: Beams (Support); Inservice
• Subject Areas: Bridges and other structures; Highways;

Filing Info

• Accession Number: 00093953
• Record Type: Publication
• Source Agency: National Technical Information Service
• Report/Paper Numbers: FEL-382.1 Intrm Rpt., FHWA-RD-75-S0416
• Files: NTIS, TRIS, USDOT, STATEDOT
• Created Date: Mar 10 1976 12:00AM