Behavior and Design of Concentrically Loaded T-Section Steel Columns
Publication: Journal of Structural Engineering
Volume 140, Issue 7
Abstract
The buckling behavior of T-section columns is discussed in detail, followed by a numerical study using geometric and material nonlinear analyses (GMNIA) to produce column strengths for a wide range of geometries of T-sections and column lengths. The T-sections are assumed to be hot-rolled and include residual stresses and geometric imperfections typical of hot-rolled sections. On the basis of the numerical strengths thus produced and the available test strengths for T-section columns, the design provisions of the Australian, European, and American specifications for hot-rolled steel structures are evaluated. It is shown that the Australian standard provides fairly consistent and accurate predictions of strength. However, the design provisions for T-sections of current European and American specifications are conservative and associated with large variability, particularly for T-sections with slender elements. The paper recommends modifications to the European and American specifications that improve the design strength predictions of these specifications for T-section columns.
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Information
Published In
Journal of Structural Engineering
Volume 140 • Issue 7 • July 2014
Copyright
© 2014 American Society of Civil Engineers.
History
Received: May 2, 2013
Accepted: Oct 11, 2013
Published online: Mar 31, 2014
Published in print: Jul 1, 2014
Discussion open until: Aug 31, 2014
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