Web Buckling in Thin Webbed Castellated Beams
Publication: Journal of Structural Engineering
Volume 122, Issue 8
Abstract
Tests are described in which 12 castellated beams were loaded to failure in order to study the buckling of the web post between openings. In 10 cases web-post buckling occurred. Finite-element analysis (FEM) of the web post, taking into account inelastic action, was used to predict the buckling loads. Also, graphical results were obtained based on a previously described analysis in which the web post was treated as a beam and the finite difference method was used to obtain the buckling loads. Both methods show very good correlation with the maximum test loads. Either of these methods provide a satisfactory basis for design, although the FEM results are superior because of the lower variability in the predictions. The graphical results provide general solutions covering a practical range of geometries, and can be considered suitable until the results of finite-element parameter studies become available.
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Information
Published In
Journal of Structural Engineering
Volume 122 • Issue 8 • August 1996
Pages: 860 - 866
Copyright
Copyright © 1996 American Society of Civil Engineers.
History
Published online: Aug 1, 1996
Published in print: Aug 1996
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