Direct Strength Design of Cold-Formed C-Sections for Shear and Combined Actions
Publication: Journal of Structural Engineering
Volume 138, Issue 6
Abstract
The direct strength method (DSM) recently included in the North American Specification and Australian/New Zealand Standard AS/NZS 4600:2005 gives design rules for compression and bending. No rules are presented in this standard for shear or for combined bending and shear. Two series of tests on C-section can be used to develop and calibrate rules for design in shear and for combined bending and shear. These are the University of Missouri Rolla tests of the 1970s and recent tests on high-strength C-sections at the University of Sydney. Both series of tests use a similar test rig, although different levels of tension field action have been observed. Two features researched are the effect of full-section shear buckling (as opposed to web-only shear buckling), and tension field action. Full-section buckling is a feature of the DSM but requires software that can evaluate full sections for shear. The paper proposes DSM design rules for C-sections in shear and for combined bending and shear both with and without tension field action. The test results are compared with the proposed design rules.
Get full access to this article
View all available purchase options and get full access to this article.
References
American Iron and Steel Institute (AISI). (1996). Specification for the design of cold-formed steel structural members, 1996 Ed., AISI, Washington, DC.
American Iron and Steel Institute. (2001). Commentary on the load and resistance factor design specification for cold-formed steel structural member, AISI, Washington, DC.
American Iron and Steel Institutce. (2006). Direct strength method (DSM) design guide, AISI, Washington, DC.
American Iron and Steel Institute. (2007). “North American specification for the design of cold-formed steel structural members.” 2007 Ed., AISI S100-2007, Washington, DC.
Basler, K. (1961). “Strength of plate girders in shear.” J. Struct. Div.JSDEAG, 87(7), 151–180.
Bleich, F. (1952). Buckling strength of metal structures, McGraw-Hill, New York.
Bulson, P. S. (1970). Stability of flat plates, Chatto and Windus, London.
Centre for Advanced Structural Engineering. (2006). “THIN-WALL—A computer program for cross-section analysis and finite strip buckling analysis and direct strength design of thin-walled structures.” Version 2.1 [Computer software]. School of Civil Engineering, Univ. of Sydney, Sydney, Australia.
Craig, B. (1999). “Calibration of web shear stress equations: Comparison between AISI and CSA-S136 cold-formed steel standards.” Rep. CivE 703, Univ. of Waterloo, ON, Canada.
Ellingwood, B., Galambos, T. V., MacGregor, J. G., and Cornell, C. A. (1980). “Development of a probability based load criterion for American National Standard A58: Building code requirements for minimum design loads in buildings and others structures.” Proc., 15th Int. Specialty Conf. on Cold-Formed Steel Structures, St. Louis, MO.
Fan, S. C., and Cheung, Y. K. (1982). “Spline finite strip in structural analysis.” Proc., Int. Conf. on Finite Element Method, Shanghai, China.
LaBoube, R. A., and Yu, W. W. (1978). “Structural behavior of beam webs subjected primarily to shear.” Final Rep., Civil Engineering Study 78-2, Univ. of Missouri, Rolla, St. Louis, MO.
Lau, S. C. W., and Hancock, G. J. (1986). “Buckling of thin flat-walled structures by a spline finite strip method.” Thin-Walled Struct.TWASDE, 4(4), 269–294.
Pham, C. H., and Hancock, G. J. (2009a). “Direct strength design of cold-formed purlins.” J. Struct. Eng.JSENDH, 135(3), 229–238.
Pham, C. H., and Hancock, G. J. (2009b). “Experimental investigation of high strength cold-formed C-section in combined bending and shear.” Research Rep. No. R894, School of Civil Engineering, Univ. of Sydney, Australia.
Pham, C. H., and Hancock, G. J. (2009c). “Experimental investigation of high strength cold-formed SupaCee® Sections in combined bending and shear.” Research Rep. No. R907, School of Civil Engineering, Univ. of Sydney, Australia.
Pham, C. H., and Hancock, G. J. (2009d). “Shear buckling of thin-walled channel sections.” J. Constr. Steel Res.JCSRDL, 65(3), 578–585.
Pham, C. H., and Hancock, G. J. (2009e). “Shear buckling of thin-walled channel sections with intermediate web stiffener.” Proc., 6th Int. Conf. on Advances in Steel Structures, Hong Kong, 417–424.
Pham, C. H., and Hancock, G. J. (2010). “Experimental investigation of high strength cold-formed C-section in combined bending and shear.” J. Struct. Eng.JSENDH, 136(7), 866–878.
Schafer, B. W. (2008). “Review: The direct strength method of cold-formed steel member design.” J. Constr. Steel Res.JCSRDL, 64(7-8), 766–778.
Schafer, B. W., and Ádány, S. (2006). “Buckling of cold-formed steel members using CUFSM, conventional and constrained finite strip methods.” Proc., 18th Int. Specialty Conf. on Cold-Formed Steel Structures, Univ. of Missouri, Rolla, Rolla, MO, 39–54.
Schafer, B. W., and Peköz, T. (1998). “Direct strength prediction of cold-formed steel members using numerical elastic buckling solutions, thin-walled structures, research and development.” Proc., 14th Int. Specialty Conf. on Cold-Formed Steel Structures, St. Louis, MO.
Standards Australia. (1998). “Steel structures.” AS 4100:1998, Standards Australia/Standards New Zealand, Sydney, NSW, Australia.
Standards Australia. (2005). “Cold-formed steel structures.” NZS 4600:2005, Standards Australia/Standards New Zealand, Sydney, NSW, Australia.
Timoshenko, S. P., and Gere, J. M. (1961). Theory of elastic stability, McGraw-Hill, New York.
Information & Authors
Information
Published In
Copyright
© 2012. American Society of Civil Engineers.
History
Received: Mar 15, 2011
Accepted: Sep 22, 2011
Published online: May 15, 2012
Published in print: Jun 1, 2012
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.