Buckling Loads for Built-up Columns with Stay Plates
Publication: Journal of Engineering Mechanics
Volume 121, Issue 11
Abstract
A method to analyze the buckling load for a built-up column was introduced by Engesser in the last century. Many attempts have been made since then to derive more accurate solutions. All these continuum methods based on the Engesser approach do not consider the effect of stay plates at the end of built-up columns. Atle Gjelsvik modified Engesser's theory to eliminate this drawback. A generalized form of the governing equations provided by Gjelsvik has been presented here, and it is applicable to any built-up column with a continuous web. The buckling loads for built-up columns are obtained for different boundary conditions of practical importance. They are compared with solutions obtained using the Euler and Engesser methods. The solutions are presented in graphical form for easy use. The classical Engesser method is always conservative.
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References
1.
Engesser, F.(1889). “Die Knickfestigkeit gerader Stäbe.”Zeitschrift des Architekten und Ingenieur Vereins zu Hannover, 35, 455.
2.
Engesser, F.(1891). “Die Knickfestigkeit gerader Stäbe.”Zentralblatt der Bauverwaltung, 11, 483.
3.
Engesser, F.(1909). “Uber die Knickfestigkeit von Rahmenstäben.”Zentrablatt der Bauverwaltung, 29, 136.
4.
Gjelsvik, A. (1990). “Buckling of built-up columns, with or without stay plate.”J. Engrg. Mech., ASCE, 116(5).
5.
Johnson, B. G. (1971). “Spaced steel columns.”J. Struct. Div., ASCE, 97(5).
6.
Paul, M.(1995). “Theoretical and experimental study on buckling of built-up column.”J. Engrg. Mech., ASCE, 121(10), 1298–1105.
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Copyright © 1995 American Society of Civil Engineers.
History
Published online: Nov 1, 1995
Published in print: Nov 1995
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