Experimental Investigation of Cold-Formed Steel Tubes Subjected to Web Crippling

Abstract:

A series of tests on cold-formed steel square and rectangular hollow sections subjected to web crippling is reported in this paper. The web crippling tests were conducted under two loading conditions of end-two-flange (ETF) and interior-two-flange (ITF), which are specified in the current North American Specification for cold-formed steel structures. The concentrated load was applied by means of bearing plates, which act across the full flange width of the specimen sections. Different bearing lengths were investigated. The test specimens were fabricated by cold-rolling from steel sheet with nominal yield strength of 345MPa. The measured web slenderness values of the tubes ranged from 15.5 to 46.0. The test strengths obtained from this study are compared with the design strengths obtained using the current North American Specification, Australia Standard, European Code and Chinese Code for cold-formed steel structures. It is shown that the design strengths predicted by the specifications are either unreliable or too conservative.

• Periodical: Applied Mechanics and Materials (Volumes 166-169)
• Pages: 322-328
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.166-169.322
• Online since: May 2012
• Authors: Huai Lin Peng*, Feng Zhou, Le Wei Tong
• Keywords: Cold-Formed Steel, Experimentation, Square and Rectangular Hollow Sections, Web Crippling

References

[1] W.W. Yu, Cold-formed Steel Design, 3rd Edition, John Wiley and Sons, Inc., New York, 2000.

[2] J.T. Dewolf, C.J. Gladding, Post-buckling Behavior of Beam Webs in Flexure, Journal of the Structural Divison, Proceedings of the American Society of Civil Engineers. 104 (1978) 1109-1121.

DOI: 10.1061/jsdeag.0004953

[3] G. Winter, R.H.J. Pian, Crushing Strength of Thin Steel Webs, Cornell University, New York, 1946.

[4] North American Specification. North American Specification for the Design of Cold-formed Steel Structural Members, North American Cold-Formed Steel Specification, American Iron and Steel Institute, Washington, D.C, 2001.

DOI: 10.1061/9780784415955

[5] EN 1993-1-3: Design of steel structures, Part 1-3: General Rules - Supplementary Rules for Cold-formed Members and Sheeting. European Standard. European Committee for Standardizations, 2004.

DOI: 10.3403/02338401u

[6] Standards Association of Australia. AS 4100 Steel Structures. Standards Australia, Sydney, Australia, 1998.

[7] National Standard of the People's Republic of China: GB50018 Technical Code of Cold-formed Thin-wall Steel Structures, 2002. (In Chinese)

[8] ASTM. Standard Test Methods for Tension Testing of Metallic Materials, American Society for Testing and Materials, E 8M-97, West Conshohocken.

[9] X.L. Zhao, G.J. Hancock, Square and Rectangular Hollow Sections Subjected to Combined Actions, Journal of Structural Engineering, ASCE. 118 (1992) 648-668.

DOI: 10.1061/(asce)0733-9445(1992)118:3(648)

[10] X.L. Zhao, G.J. Hancock, Square and Rectangular Hollow Sections under Transverse End-Bearing Force. Journal of Structural Engineering, ASCE. 121 (1995) 1323-1329.

DOI: 10.1061/(asce)0733-9445(1995)121:9(1323)