Retrofit of Reinforced Concrete Columns Using Partially Stiffened Steel Jackets
This article has a reply.
VIEW THE REPLYThis article has a reply.
VIEW THE REPLYPublication: Journal of Structural Engineering
Volume 129, Issue 6
Abstract
This paper introduces an improved steel jacketing method to retrofit reinforced concrete columns with a square or rectangular section for enhanced strength and improved ductility. To retrofit an existing column, relatively thin steel plates were welded to form a rectilinear jacket for shear strength enhancement, and then additional confinement elements (stiffeners) with various types of desired configurations were welded to the potential plastic hinge regions to ensure a ductile behavior. A rational retrofit design procedure was suggested and evaluated through an experimental program. Five 1/3 scale model columns were tested under constant axial load of and cyclic lateral force in a double-curvature condition. Test results validated the efficiency of the partially stiffened rectilinear steel jacketing, which not only prevented brittle shear failure but also greatly improved the ductility of the column with achieving an ultimate drift ratio of more than 8%. Besides the structural merits, the partially stiffened rectilinear steel jackets also have appealing architectural features.
Get full access to this article
View all available purchase options and get full access to this article.
References
Aboutaha, R. S., Engelhardt, M. D., Jirsa, J. O., and Kreger, M. E. (1996). “Retrofit of concrete columns with inadequate lap spices by the use of rectangular steel jackets.” The earthquake spectra, EERI, Oakland, Calif., November, 693–714.
Aboutaha, R. S., and Machado, R. I.(1999). “Seismic resistance of steel-tubed high-strength reinforced-concrete columns.” J. Struct. Eng., 125(5), 485–494.
American Concrete Institute (ACI) 318. Committee (1999). “Building code requirements for reinforced concrete and commentary” ACI 318-99/ACI 418R-99, Farmington Hills, Mich.
American Institute of Steel Construction (AISC). (1999). “Load and resistance factor design specification for structural steel buildings.” Chicago.
Earthquake Engineering Research Institute. (1994). “Preliminary reconnaissance report on Northridge earthquake, January 17, 1994.” EERI, Oakland, Calif., 96.
Earthquake Engineering Research Institute. (1995). “Preliminary reconnaissance report on the Hyogo-Ken Nanbu earthquake of January 17, 1995.” EERI, Oakland, Calif., 95–104.
Priestley, M. J. N.(1987). “Damage of the I-5/I605 separator in the Whittier earthquake of October 1987.” Earthquake Spectra, 4(2), 389–405.
Priestley, M. J. N., Seible, F., Xiao, Y., and Verma, R.(1994). “Steel jacket retrofitting of reinforced concrete bridge columns for enhanced shear strength. 1: Theoretical considerations and test design.” ACI Struct. J., 91(4), 394–405.
Priestley, M. J. N., Verma, R., and Xiao, Y.(1994). “Seismic shear strength of reinforced concrete columns.” J. Struct. Eng., 120(8), 2310–2329.
Sakino, K., and Ishibashi, H.(1985). “Experimental studies on concrete filled square steel tubular short columns subjected to cyclic shearing force and constant axial force.” Trans. Architect. Ins. Jpn., 353, 81–89.
Tomii, M. (1993). “Non-hooped reinforced concrete columns and beam-to-column connections laterally confined in bellows square steel tube.” Proc., Tom Paulay Symposium, La Jolla, Calif., September, 20–22.
Tomii, M., Sakino, K., and Xiao, Y. (1987). “Ultimate moment of reinforced concrete short columns confined in steel tube.” Proc., Pacific Conf. on Earthquake Engineering, Vol. 2, New Zealand, August 5–8, 11–22.
Xiao, Y. (2001). “From steel tubed columns to FRP tubed columns.” Chap. 1, Proc., ASCE Structural Congress, ASCE, Reston, Va.
Xiao, Y., Priestley, M. J. N., and Seible, F. (1993). “Steel jacket retrofit for enhancing shear strength of short rectangular reinforced concrete bridge columns.” Structural systems research project, Rep. No. SSRP-92/07, Dept. of Applied Mechanics and Engineering Sciences, August 1993, 192.
Information & Authors
Information
Published In
Journal of Structural Engineering
Volume 129 • Issue 6 • June 2003
Pages: 725 - 732
Copyright
Copyright © 2003 American Society of Civil Engineers.
History
Received: Feb 22, 2002
Accepted: Aug 16, 2002
Published online: May 15, 2003
Published in print: Jun 2003
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.