Analysts of Partially Prestressed Composite Beams
Publication: Journal of Structural Engineering
Volume 112, Issue 4
Abstract
Based on equilibrium and compatibility, a general analysis procedure is developed for cracked prestressed and partially prestressed concrete composite sections in the elastic range of behavior. Direct equations are derived for the strains and stresses in the constituent materials taking into account the change in prestressing force, due to the application of loads. Solutions for the special cases of uncracked composite sections, cracked and uncracked noncomposite sections as well as expressions for the cracking and decompression moments are also presented. A parametric analysis is conducted to study the effects of various parameters on the stresses and stress ranges in the constituent materials. An example is developed to illustrate the application of the method.
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References
1.
Abeles, P. W., “Philosophy of Design of Partial Prestressing,” Special Publication SP‐59, American Concrete Institute, 1979, pp. 287–304.
2.
Bennett, E. W., and Veerasubrama, N., “Behavior of Nonrectangular Beams With Limited Prestress After Flexural Cracking,” ACI Journal, Proceedings, Vol. 69, No. 9, Sept., 1972, pp. 533–542.
3.
Brondum‐Nielsen, T., “Stress Analysis of Concrete Sections Under Service Loads,” ACI Journal, Vol. 76, No. 2, Feb., 1979, pp. 195–211.
4.
Branson, D. E., “The Deformation of Noncomposite and Composite Prestressed Concrete Members,” Deflection of Concrete Structures SP‐43, American Concrete Institute, Detroit, MI, 1974.
5.
Connoly, W. H., Design of Prestressed Concrete Beams, F. W. Dodge Corporation, New York, NY, 1960, p. 114.
6.
Dilger, W. H., “Creep Analysis of Prestressed Concrete Structures Using Creep‐Transformed Section Properties,” PCI‐Journal, Vol. 27, No. 1, Jan.–Feb., 1982.
7.
Moustafa, S. E., “Design of Partially Prestressed Concrete Flexural Members,” PCI Journal, Vol. 22, No. 3, May–June, 1977, pp. 12–29.
8.
Naaman, A. E., “Research Needs in Partial Prestressing,” PCI‐Journal, Vol. 27, No. 4, July–Aug., 1982, pp. 106–107.
9.
Naaman, A. E., Prestressed Concrete Analysis and Design Fundamentals, McGraw‐Hill Book Co., New York, NY, 1982.
10.
Naaman, A. E., and Siriaksorn, A., “Serviceability Based Design of Partially Prestressed Beams,” PCI‐Journal, Vol. 24, Part 1, No. 2, Mar.–Apr., 1979, pp. 64–89,
and Part 2, No. 3, May–June, 1979, pp. 40–60.
11.
Nilson, A. H., “Flexural Stresses After Cracking in Partially Prestressed Beams,” PCI‐Journal, Vol. 21, No. 4, July–Aug., 1976, pp. 72–81.
12.
Okada, K., Sakamura, A., and Sasaki, T., “Studies on Prestressed Composite Beams,” Proceedings, Japan Cement Engineering Association, Vol. 13, 1959, pp. 91–92.
13.
Rao, V. J., and Dilger, W. H., “Analysis of Composite Prestressed Concrete Beams,” Journal of the Structural Division, ASCE, Vol. 100, ST10, Oct., 1974, pp. 2109–2121.
14.
Rao, V. J., and Dilger, W. H., “Time‐Dependent Deflections of Composite Prestressed Concrete Beams,” Deflection of Concrete Structures, SP‐43, American Concrete Institute, Detroit, MI, 1974.
15.
Tadros, M. K., “Expedient Service Load Analysis of Cracked Prestressed Concrete Sections,” PCI Journal, Vol. 27, No. 6, Nov.–Dec., 1982, pp. 86–111.
16.
Tadros, M. K., Ghali, A., and Dilger, W. H., “Time‐Dependent Analysis of Composite Frames,” Journal of the Structural Division, ASCE, Vol. 103, ST4, Apr., 1977, pp. 871–884.
Information & Authors
Information
Published In
Journal of Structural Engineering
Volume 112 • Issue 4 • April 1986
Pages: 709 - 725
Copyright
Copyright © 1986 ASCE.
History
Published online: Apr 1, 1986
Published in print: Apr 1986
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