EFFECT OF TENDON-AREA LOSS ON FLEXURAL BEHAVIOR OF P/C BEAMS
This study formulates the relationship between the prestressing steel-area loss and flexural behavior for beams. Iterative computer procedures are developed for calculation of moment-curvature curves for noncomposite and composite sections with bonded tendons. Closed-form solutions are obtained for linear elastic beams. The paper also evaluates the effect of area loss on flexural behavior for a typical AASHTO bridge girder. It was found that time-dependent quantities: axial strain, curvature, and rotation axis location, and initial strains in tendons, uniquely determine the behavior of a noncomposite prestressed concrete beam. For a composite beam two more parameterw are considered: initial axial strain, and corresponding curvature. They are needed to consider strains in the reinforced concrete slabs. For linear elastic materials, the derived formulas yield the solution in a closed form. For uncracked sections, the solution is exact.
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Availability:
- Find a library where document is available. Order URL: http://worldcat.org/issn/07339445
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Corporate Authors:
American Society of Civil Engineers
345 East 47th Street
New York, NY United States 10017-2398 -
Authors:
- Ting, S-C
- Novak, A S
- Publication Date: 1991-4
Media Info
- Features: Appendices; Figures; References;
- Pagination: p. 1127-43
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Serial:
- Journal of Structural Engineering
- Volume: 117
- Issue Number: 4
- Publisher: American Society of Civil Engineers
- ISSN: 0733-9445
- Serial URL: http://ascelibrary.org/loi/jsendh
Subject/Index Terms
- TRT Terms: Beams; Bridges; Curvature; Flexure; Girders; Prestressed concrete; Prestressing; Steel; Structural analysis; Structural mechanics
- Uncontrolled Terms: Structural behavior
- Old TRIS Terms: Prestressed steels
- Subject Areas: Bridges and other structures; Highways; I20: Design and Planning of Transport Infrastructure;
Filing Info
- Accession Number: 00605213
- Record Type: Publication
- Files: TRIS
- Created Date: Mar 31 2000 12:00AM