Prestressed Concrete Beams with Opening Under Torsion and Bending
Publication: Journal of Structural Engineering
Volume 115, Issue 11
Abstract
Strength equations based on the skew‐bending model have been developed to predict the torsional strength of prestressed concrete beams containing a circular transverse opening and subjected to combined torsion and bending. Test results of 13 axially and eccentrically prestressed concrete beams with web reinforcements are presented. Close agreement is observed between the experimental and the predicted values. The interaction diagrams show that for small T/M ratio, mode 1 failure occurs and presence of bending moment reduces torsional strength. For high T/M ratio, however, bending moment has no effect on the torsional moment capacity. Compared with the precracking range, the torsional stiffness is very much reduced in the postcracking range. Test results show that eccentric prestressing is more economical than axial prestressing.
Get full access to this article
View all available purchase options and get full access to this article.
References
1.
Barney, G. B., et al. (1977). “Behavior and design of prestressed concrete beam with large openings.” J. Prestressed Conor. Inst., 22(6), 32–61.
2.
Bishara, A. (1969). “Prestressed concrete beams under combined tension, bending and shear.” J. Amer. Concr. Inst., 66(7), 525–539.
3.
Collins, M. P., et al. (1968). “Ultimate strength of reinforced concrete beams subjected to combined torsion and bending.” Torsion of Structural Concrete, (SP‐I8), Amer. Concr. Inst., Detroit, Mich., 379–402.
4.
Daniel, H. R., and McMullen, A. A. (1977). “Torsion in concrete beams containing an opening.” J. Struct. Div., ASCE, 103(3), 607–617.
5.
Hasnat, A., and Akhtaruzzaman, A. A. (1983). “An experimental investigation to determine the torsional strength of reinforced concrete beams containing an opening under bending and torsion.” Final Report, Research Project No. 01‐21, Scientific Res. Administration, Coll. of Engrg., King Abdulaziz Univ., Jeddah, Saudi Arabia.
6.
Hasnat, A., and Akhtaruzzaman, A. A. (1987). “Beams with small rectangular opening under torsion, bending, and shear.” J. Struct. Engrg., ASCE, 113(10), 2253–2270.
7.
Hasnat, A., et al. (1988). “Prestressed concrete beams with small opening under torsion.” J. Struct. Engrg., ASCE, 114(7), 1626–1643.
8.
Hsu, T. T. C. (1984). Torsion of reinforced concrete. Van Nostrand Reinhold Co., New York, N.Y.
9.
Lessig, N. N. (1959). “Determination of load carrying capacity of reinforced concrete elements with rectangular cross‐section subjected to flexure and torsion.” Proc., Concrete and Reinforced Concrete Inst., Moscow, U.S.S.R., 5‐28 (in Russian).
10.
Mansur, M. A., and Hasnat, A. (1979). “Concrete beams with small opening under torsion.” J. Struct. Div., ASCE, 105(11), 2433–2447.
11.
Mansur, M. A., and Paramasivam, P. (1984). “Reinforced concrete beams with small opening in bending and torsion.” J. Amer. Conor. Inst., 81(2), 180–185.
12.
Mukherjee, P. R., and Warwaruk, J. (1971). “Torsion, bending, and shear in prestressed concrete.” J. Struct. Div., ASCE, 97(4), 1063–1079.
13.
Salam, S. A., and Harrop, J. (1979). “Prestressed concrete beams with transverse circular holes.” J. Struct. Div., ASCE, 105(3), 635–652.
14.
Victor, D. J., and Aravindan, P. K. (1979). “Prestressed and reinforced concrete Tbeams under combined bending and torsion.” J. Amer. Concr. Inst., 75(10), 526–532.
Information & Authors
Information
Published In
Journal of Structural Engineering
Volume 115 • Issue 11 • November 1989
Pages: 2727 - 2739
Copyright
Copyright © 1989 ASCE.
History
Published online: Nov 1, 1989
Published in print: Nov 1989
Authors
Metrics & Citations
Metrics
Citations
Download citation
If you have the appropriate software installed, you can download article citation data to the citation manager of your choice. Simply select your manager software from the list below and click Download.