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Lateral–torsional buckling assessment of steel beams through a stiffness reduction method
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Kucukler, Merih, Gardner, Leroy and Macorini, Lorenzo (2015) Lateral–torsional buckling assessment of steel beams through a stiffness reduction method. Journal of Constructional Steel Research, 109 . pp. 87-100. doi:10.1016/j.jcsr.2015.02.008 ISSN 0143-974X.
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Official URL: http://dx.doi.org/10.1016/j.jcsr.2015.02.008
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.
Item Type: | Journal Article | ||||||||
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Divisions: | Faculty of Science, Engineering and Medicine > Engineering > Engineering | ||||||||
Journal or Publication Title: | Journal of Constructional Steel Research | ||||||||
Publisher: | Elsevier | ||||||||
ISSN: | 0143-974X | ||||||||
Official Date: | June 2015 | ||||||||
Dates: |
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Volume: | 109 | ||||||||
Page Range: | pp. 87-100 | ||||||||
DOI: | 10.1016/j.jcsr.2015.02.008 | ||||||||
Status: | Peer Reviewed | ||||||||
Publication Status: | Published | ||||||||
Access rights to Published version: | Restricted or Subscription Access | ||||||||
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