Experimental and Analytical Investigation of Concrete Filled Steel Tubular Columns
Publication: Journal of Structural Engineering
Volume 137, Issue 6
Abstract
In this paper, an experimental and analytical investigation of concrete-filled steel tubular (CFST) laced columns is presented. These columns consist of four concrete-filled steel tubes that are laced together. A total of 27 experimental tests were conducted to quantify the column failure mechanism at ultimate loads. The experiments were designed to obtain the load-deflection curves. These curves were subsequently used to quantify the structural behavior for each element of the hybrid column. Experimental results indicate that the compression force in the longitudinal members dominated the failure mechanism in the CFST columns. In-plane bending occurred when member segments reached the compression failure load. The forces in the lacing members (diagonal and horizontal bracing) were found to be small and remained in the elastic range through failure. The experimental study was used to validate an analytical parametric study. The analytical study showed that increasing slenderness ratios and eccentricities reduced the ultimate load capacity. Additionally, finite-element analyses of CFST columns based on four in situ structures were performed to determine the ultimate load-carrying capacity and were subsequently compared to several building codes. On the basis of the analytical results, a new methodology for calculating the ultimate load-carrying capacity is proposed. This purposed methodology is compared with five different building codes to quantify the increased accuracy.
Get full access to this article
View all available purchase options and get full access to this article.
Acknowledgments
This research work has been conducted under Grant No. UNSPECIFIED2008F3005 of the Young Talent Project of Fujian Province and Grant No. UNSPECIFIED50578042 of the Chinese National Science Foundation. This support is sincerely appreciated.
References
American Institute of Steel Construction (AISC). (1999). LRFD specification for structural steel buildings, Chicago.
ANSYS [Computer software]. ANSYS, Canonsburg, PA.
Bode, H. (1976). “Columns of steel tubular sections filled with concrete: Design and application.” Acier-Stahl-Steel, 11–12, 388–393.
British Standards Institution (BSI). (2005). “Design of composite steel and concrete structure. Part 1.1: General rules and rules for buildings.” Eurocode 4, London.
Chen, B. (2007). “An overview of concrete and CFST arch bridges in China.” Proc., 5th Int. Conf. Arch Bridge, Univ. of Minho, Guimarães, Portugal, 29–44.
Chen, B., and Ou, Z. (2007). “Experimental research on ultimate load carrying capacity of four-tube concrete filled steel tubular laced columns.” China Civ. Eng. J., 40(6), 32–41 (in Chinese).
Chen, B., and Ou, Z. (2008). “Research on calculation method of the ultimate load carrying capacity of concrete filled steel tubular laced columns.” China Civ. Eng. J., 41(1), 55–63 (in Chinese).
China Association for Engineering Construction Standardization. (1992). “Specification for design and construction of concrete filled steel tubular structures.” CECS 28:90, China Planning Press, Beijing.
Han, L. (2004). The concrete filled steel tubular structures from theory to practice, Science Press, Beijing.
International Association for Cooperation and Research of Steel-Concrete Composite Structures (ASCCS). (1997). “Concrete filled steel tubes—A comparison of international codes and practices.” ASCCS Seminar Rep., Innsbruck, Austria.
Kawano, A., and Matsui, C. (1999). “The deformation capacities of parallel chord trusses with concrete filled tubular chords.” J. Struct. Constr. Eng., AIJ, 522, 129–135 (in Japanese).
Kawano, A., Matsui, C., and Sakino, Y. (1996). “An experimental study on the elasto-plastic behavior and deformability of concrete-filled tubular truss beam-columns under cyclic loading.” J. Struct. Constr. Eng., AIJ, 482, 169–176 (in Japanese).
Kawano, A., and Sakino, K. (2003). “Seismic resistance of CFT trusses.” Eng. Struct., 25(5), 607–619.
Neogi, P. K., and San, H. K. (1969). “Concrete filled tubular steel columns under eccentric loading.” Struct. Eng., 47(5), 187–195 (in Chinese).
Ou, Z., and Chen, B. (2006). “Experimental research on concrete filled steel tubular laced columns compressed eccentrically.” Proc., 8th ASCCS Int. Conf., Harbin Institute of Technology, Harbin, China, 12–15.
Ou, Z., and Chen, B. (2007). “Experimental research on influence of eccentrically ratio on concrete filled steel tubular laced columns compressed eccentrically.” J. Build. Struct., 28, 184–190 (in Chinese).
State Economic and Trade Commission of the People’s Republic of China. (1999). Code for design of steel-concrete structures (DL/T 5085-1999), China Electric Power Press, Beijing.
State Bureau of Building Materials Industry of China. (1990). Specification for design and construction of concrete filled steel tubular structures (JCJ 01-89), Tongji University Press, Shanghai, China.
Zhong, S. (2003). The concrete filled steel tubular structures, Tsinghua University Press, Beijing.
Information & Authors
Information
Published In
Journal of Structural Engineering
Volume 137 • Issue 6 • June 2011
Pages: 635 - 645
Copyright
© 2011 American Society of Civil Engineers.
History
Received: Oct 1, 2009
Accepted: Sep 12, 2010
Published online: Sep 22, 2010
Published in print: Jun 1, 2011
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.