Stability of steel beams using the continuous strength method

Title: Stability of steel beams using the continuous strength method
Authors: Foster, ASJ
Gardner, L
Item Type: Journal Article
Abstract: Through a programme of experiments, numerical modelling and parametric studies, the implications of allowing for strain-hardening in the design of partially restrained steel beams are investigated. A total of fourteen tests were performed on simply supported beams that were partially restrained against lateral torsional buckling. Four different restraint spacings were considered in the tests to give non-dimensional lateral torsional slenderness values of 0.1, 0.2, 0.3 and 0.4 for the unrestrained lengths. In all tests, bending resistances in excess of the plastic moment capacity were observed, but in order to attain the levels of resistance predicted by the continuous strength method (CSM), which allows for strain-hardening, closer restraint spacing than the minimum specified by EN 1993-1-1 (2005) is required. Using additional data generated as part of an analytical and numerical study, as well as test data collected from the literature, a basic design approach was presented that incorporated a limiting lateral torsional slenderness for the CSM of 0.2, as well as a simple transition function from bending resistances predicted by plastic theory to those predicted by the CSM.
Issue Date: 1-Mar-2016
Date of Acceptance: 21-Nov-2015
ISSN: 0263-8231
Start Page: 1
End Page: 13
Volume: 100
Copyright Statement: © 2015 Elsevier Ltd. All rights reserved. This manuscript is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International
Keywords: Science & Technology
Engineering, Civil
0901 Aerospace Engineering
0905 Civil Engineering
0913 Mechanical Engineering
Civil Engineering
Publication Status: Published
Online Publication Date: 2015-12-09
Appears in Collections:Faculty of Engineering
Civil and Environmental Engineering

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