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Lateral-torsional buckling assessment of steel beams through a stiffness reduction method
File(s)
Author(s)
Kucukler, M
Gardner, L
Macorini, L
Type
Journal Article
Abstract
This paper presents a stiffness reduction approach utilising Linear Buckling Analysis (LBA) with developed stiffness reduction functions for the lateral–torsional buckling (LTB) assessment of steel beams. A stiffness reduction expression is developed for the LTB assessment of beams subjected to uniform bending and modified for the consideration of moment gradient effects on the development of plasticity. The proposed stiffness reduction method considers the influence of imperfections and plasticity on the response through the reduction of the Young's modulus E and shear modulus G and obviates the need of using LTB buckling curves in design. The accuracy and practicality of the method are illustrated for regular, irregular, single and multi-span beams. In all of the considered cases, the proposed method is verified against the results obtained through nonlinear finite element modelling.
Date Issued
2015-03-20
Date Acceptance
2015-02-26
Citation
Journal of Constructional Steel Research, 2015, 109, pp.87-100
URI
DOI
ISSN
0143-974X
Publisher
Elsevier
Start Page
87
End Page
100
Journal / Book Title
Journal of Constructional Steel Research
Volume
109
Copyright Statement
© 2015 Elsevier Ltd. All rights reserved. This manuscript is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International http://creativecommons.org/licenses/by-nc-nd/4.0/
Identifier
http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000354145800008&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=1ba7043ffcc86c417c072aa74d649202
Subjects
Science & Technology
Technology
Construction & Building Technology
Engineering, Civil
Engineering
Stiffness reduction
Lateral-torsional buckling
Steel beams
Inelastic buckling
I-BEAMS
DESIGN
RESISTANCE
STRENGTH
0905 Civil Engineering
Civil Engineering
Publication Status
Published