Behavior of Eccentrically Loaded Concrete-Filled Steel Tubular Columns
Publication: Journal of Structural Engineering
Volume 130, Issue 2
Abstract
Beam columns of concrete-filled steel tubular (CFT) columns are designed using a design formula established by the Architectural Institute of Japan (AIJ). However, the scope of the formula in the current AIJ standard is limited to ordinary material strengths, and a rational mathematical model which makes it possible to reproduce load-deformation behavior in CFT columns has not yet been established. The main objectives of this research were to investigate the effect of higher material strengths on the flexural behavior and to create mathematical models of the steel tube and filled concrete. Adequate study of the effects of the section shape, diameter (width)-to-thickness ratio, and the combination of strengths of the steel tube and filled concrete was included in the scope of this investigation. Based on the experimental results of 65 eccentric compression tests, an analytical model for the restoring force characteristics of the flexural behavior of CFT columns is proposed, and is found to reproduce experimental results such as the synergistic interaction between the steel tube and filled concrete with good accuracy.
Get full access to this article
View all available purchase options and get full access to this article.
References
Architectural Institute of Japan (AIJ). (1981). “Ultimate strength and deformation capacity of buildings in seismic design.” AIJ, Tokyo.
Architectural Institute of Japan (AIJ). (1987). “AIJ standard for structural calculation of steel reinforced concrete structures.” AIJ, Tokyo.
Association for Science Documents Information. (1988). Earthquake resistant regulations: A World List—1988, Chap. 23: Japan, Assn. Science Documents Information, Tokyo, 646–662.
Blanks, R. F., and McNamara, C. C.(1935). “Mass concrete tests in large cylinders.” ACI J., 31, 280–303.
Kato, B., and Nishiyama, I.(1980). “Local buckling strength and deformation capacity of cold-formed steel rectangular hollow section.” J. Struct. Construct. Eng., 294, 45–52.
Nakahara, H., Sakino, K., and Inai, E.(1998). “Analytical model for axial compressive behavior of concrete filled square steel tubular columns.” Trans. Jpn. Concrete Inst., 20, 171–178.
Ninakawa, T., Nakahara, H., and Sakino, K. (1997). “Estimation of ultimate bending moment capacity of concrete filled square steel tubular columns—A method of taking into account the confinement effect in tensile region.” Summaries of Technical Papers of the Annual Meeting of AIJ, Architectural Inst. of Japan, Tokyo, Paper No. 22456, 911–912.
Sakino, K., and Sun, Y.(1994). “Stress-strain curve of concrete confined by rectilinear hoop.” J. Struct. Construct. Eng., 461, 95–104.
Sakino, K., Ninakawa, T., Nakahara, H., and Morino, S. (1998). “Experimental studies and design recommendations on concrete filled steel tubular columns—U.S.–Japan Cooperative Earthquake Research Program.” Structural Engineers World Congress, N. K. Srivastava, ed., Paper No. T169-3.
Tomii, M., and Yoshimura, K. (1977). “Experimental studies on concrete filled steel tubular columns under concentric loading.” Int. Colloq., Stability of Structures under Static and Dynamic Loads, Washington, D.C., 718–741.
Information & Authors
Information
Published In
Copyright
Copyright © 2004 American Society of Civil Engineers.
History
Received: May 8, 2002
Accepted: Mar 25, 2003
Published online: Jan 16, 2004
Published in print: Feb 2004
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.