Distortional Buckling of Thin-Walled Beams/Panels. II: Design Methods
Publication: Journal of Structural Engineering
Volume 121, Issue 4
Abstract
The design of standing seam roof panels must necessarily consider two loading conditions, construction and in use (occupancy) loading, in addition to the effects of ponding (if sufficient drainage or specific drainage mechanisms are not provided to avoid accumulation of water). In the present paper, the results of tests on single panels with laterally unsupported compression flanges are presented along with two design methods for the interaction between local and distortional buckling. The design methods are based on the analytical expression presented in the first paper and are conceptually consistent with the design procedures currently used for flexural, torsional, and lateral-torsional buckling. Overall, the new design methods give better approximations of the maximum capacity of wide-flange standing-seam panels than previous design methods. More research is still needed to demonstrate the applicability of the methods presented here to full-scale panel systems in which the outstanding legs are crimped together.
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References
1.
Cold-formed steel design manual. (1986). American Iron and Steel Institute (AISI), Washington, D.C.
2.
Douty, R. T. (1962). “A design approach to the strength of laterally unbraced compression flanges.”Bull. No. 37, Engineering Experimental Station, Cornell University, Ithaca, N.Y.
3.
Hsaio, L.-E., et al. (1991). “American LRFD design criteria for cold-formed steel structural members.”Int. Conf. on Steel and Aluminum Struct., Singapore, May.
4.
Serrette, R. L., and Peköz, T.(1995). “Distortional buckling of thin-walled beams/panels. I: theory.”J. Struct. Engrg., ASCE, 121(4), 705–716.
5.
Winter, G., Lansing, W., and McCalley, R. B. (1950). “Performance of thin steel compression flanges.”Reprint No. 33, Engineering Experiment Station, Cornell University, Ithaca, N.Y.
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Copyright © 1995 American Society of Civil Engineers.
History
Published online: Apr 1, 1995
Published in print: Apr 1995
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