Cold‐Formed Steel Z‐Sections with Sloping Edge Stiffness Under Axial Load
Publication: Journal of Structural Engineering
Volume 116, Issue 2
Abstract
The 1986 edition of the American Iron and Steel Institute (AISI) specification adopted the unified approach for evaluating the postbuckling capacity of partially stiffened plate elements in cold‐formed sections. The criteria for design of sections with partially stiffened flanges, however, have been based mostly on research dealing with stiffeners located perpendicular to the flanges—a situation that is not representative of a large number of cross‐sections in use today. In the present paper, the AISI design criteria for cold‐formed sections with sloping edge stiffeners are reviewed and evaluated through comparison with experimental data obtained in a test program involving 46 Z‐sections loaded in direct compression. The Z‐sections varied in length from 18 in. (457 mm) to 96 in. (2,438 mm). An important parametric variation in these tests was the angle between the edge stiffeners and the flanges that varied from 0° to 80°. The results indicated good agreement between the ultimate capacity obtained through the current AISI specifications and the experimental results.
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Information & Authors
Information
Published In
Journal of Structural Engineering
Volume 116 • Issue 2 • February 1990
Pages: 392 - 406
Copyright
Copyright © 1990 ASCE.
History
Published online: Feb 1, 1990
Published in print: Feb 1990
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