Behavior of Laterally Confined High‐Strength Concrete under Axial Loads
Publication: Journal of Structural Engineering
Volume 114, Issue 2
Abstract
The empirical results of a test program studying the effects of rectilinear confinement in high‐strength concrete subjected to a monotonically increasing compressive axial load was reported. Twentyfour columns made of high‐strength concrete with compressive strength ranging from 12,130–13,560 psi (83.6–93.5 MPa) and rectilinearly confined with lateral ties and longitudinal rebars were tested. The stress‐strain behavior was studied with respect to the effects of the volumetric ratio of lateral ties, the concrete cover, and the distribution of the longitudinal steel around the core perimeter. Expected general improvements in the strength and ductility of the high‐strength concrete with rectilinear confinement was observed. The lateral steel confinement was not as effective as in low and normal‐strength concrete. Columns with four longitudinal rebars exhibited much less ductility than columns with eight longitudinal bars. All the specimens failed with a single shear failure plane. An empirical model for the stress‐strain curve of rectilinearly confined high strength concrete using three parameters: ( ), ( ), and ( ) was proposed. Equations for the parameters were developed.
Get full access to this article
View all available purchase options and get full access to this article.
References
1.
ACI Committee 363. (1984). “State‐of‐the‐art report on high strength concrete.” ACI J., 81(4), 364–411.
2.
Ahmad, S. H., and Shah, S. P. (1982). “Stress‐strain curves of concrete confined by spiral reinforcement.” ACI J., 79(6), 484–490.
3.
Burdette, E. G., and Hilsdorf, H. K. (1971). “Behavior of laterally reinforced concrete columns.” J. Struct. Div., ASCE, 97(ST2), 587–602.
4.
Fafitis, A., and Shah, S. P. (1985). “Lateral reinforcement for high strength concrete columns.” ACI Special Publication SP‐87, American Concrete Institute, 213–232.
5.
Gerstle, K. H. (1979). “Material behavior under various types of loading.” Proceedings, National Science Foundation Workshop on High Strength Concrete, University of Illinois at Chicago Circle, Pub. No. PB79‐210057, S. P. Shah, ed., NTIS, Washington, D.C., 43–78.
6.
Martinez, S., Nilson, A. H., Slate, F. O. (1984). “Spirally reinforced high strength concrete columns,” ACI J., 81(5), 431–422.
7.
Muguruma, H., et al. (1983). “Ductility improvement of high strength concrete by lateral confinement.” Trans., Japan Concrete Institute, 403–410.
8.
Nawy, E. G., Danesi, R. F., and Gnosko, J. J. (1968). “Rectangular spiral binders effects on the plastic hinge rotation capacity in reinforced concrete beams.” J. Am. Concr. Inst., 65(12), 1001–1010.
9.
Nawy, E. G., and Salek, F. (1968). “Moment‐rotation relationships of non‐bonded post‐tensioned I‐ and T‐beams.” J. Prestressed Concr. Inst., 13(4), 40–55.
10.
Nour, M. (1987). “Stress‐strain behavior of high‐strength concrete rectilinearly confined and subjected to short‐term monotonic concentric loading,” thesis presented to Rutgers University, at Piscataway, N.J., in partial fulfillment of the requirements for the degree of Master of Science.
11.
Park, R., Priestley, M. J. N., and Gill, W.‐D. (1982). “Ductility of square confined concrete columns.” J. Struct. Div., ASCE, 108(ST4), 929–950.
12.
Sargin, M. (1971). “Stress‐strain relationships for concrete and the analysis of structural concrete sections.” Study No. 4, Solid Mechanics Division, University of Waterloo, Waterloo, Ontario, Canada.
13.
Shah, S. P., Fafitis, A., and Arnold, R. (1983). “Cyclic loading of spirally reinforced concrete.” J. Struct. Div., ASCE, 109(ST7), 1695–1710.
14.
Sheikh, S. A., and Uzumeri, S. M. (1980). “Strength and ductility of tied concrete columns.” J. Struct. Div., ASCE, 106(ST5), 1079–1102.
15.
Sheikh, S. A., and Uzumeri, S. M. (1982). “Analytical model for concrete confinement in tied columns.” J. Struct. Div., ASCE, 108(ST12), 2703–2722.
16.
Vallenas, J., Bertero, V. V., and Popov, E. P. (1977). “Concrete confined by rectangular hoops and subjected to axial loads.” Report No. UCB/EERC‐77/13, Earthquake Engineering Research Center, University of California, Berkeley, Calif.
17.
Wang, P. T., Shah, S. P., and Naaman, A. E. (1978). “Stress‐strain curves of normal and lightweight concrete in compression.” ACI J., 75(1), 603–611.
18.
Yong, Y. K., McCloskey, D. H., and Nawy, E. G. (1985). “Reinforced corbels of high‐strength.” American Concrete Institute Special Publications SP‐87, ACI, 197–212.
Information & Authors
Information
Published In
Copyright
Copyright © 1988 ASCE.
History
Published online: Feb 1, 1988
Published in print: Feb 1988
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.