Behaviour and design of fixed-ended steel equal-leg angle section columns
File(s)
Accepted version
Author(s)
Behzadi-Sofiani, Behnam
Gardner, L
Wadee, MA
Dinis, Pedro
Camotim, Dinar
Type
Journal Article
Abstract
The mechanical behaviour and design of fixed-ended steel equal-leg angle section members subjected to axial compression are addressed in this study. First, the critical buckling behaviour is described. Experimental data on steel equal-leg angle section columns collected from the literature are then used for the validation of numerical (shell finite element) models, developed within the commercial package ABAQUS. Validation is performed by means of comparisons between test and numerical results, considering ultimate loads and failure modes, all of which are shown to be generally in good agreement. A numerical parametric study is then presented considering steel angle section columns with a wide range of slenderness values. The behaviour and load-carrying capacity of the columns is shown to be dependent on, not only the column slenderness, but also the ratio of the elastic torsional-flexural buckling load to the elastic minor-axis flexural buckling load. Finally, the collected experimental and generated numerical results are used to develop a new design approach, suitable for incorporation into future revisions of Eurocode 3, for fixed-ended steel equal-leg angle section columns, reflecting the observations made. The proposed approach offers improved accuracy and consistency in strength predictions compared to the existing codified design rules. The reliability of the new design approach, with a recommended partial safety factor γM1 = 1.0, is verified following the EN 1990 procedure.
Date Issued
2021-07-01
Date Acceptance
2021-03-09
Citation
Journal of Constructional Steel Research, 2021, 182
ISSN
0143-974X
Publisher
Elsevier
Journal / Book Title
Journal of Constructional Steel Research
Volume
182
Copyright Statement
© 2021 Elsevier Ltd. All rights reserved. This manuscript is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International Licence http://creativecommons.org/licenses/by-nc-nd/4.0/
Subjects
Civil Engineering
0905 Civil Engineering
0915 Interdisciplinary Engineering
1202 Building
Publication Status
Published
Article Number
ARTN 106649
Date Publish Online
2021-03-31