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Design of hot-finished tubular steel members using a stiffness reduction method
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Kucukler, Merih and Gardner, Leroy (2019) Design of hot-finished tubular steel members using a stiffness reduction method. Journal of Constructional Steel Research, 160 . pp. 340-358. doi:10.1016/j.jcsr.2019.05.039 ISSN 0143-974X.
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WRAP-design-hot-finished-tubular-steel-members-using-stiffness-reduction-method-Kucukler-2019.pdf - Accepted Version - Requires a PDF viewer. Available under License Creative Commons Attribution Non-commercial No Derivatives 4.0. Download (4Mb) | Preview |
Official URL: http://dx.doi.org/10.1016/j.jcsr.2019.05.039
Abstract
A stiffness reduction method (SRM) for the design of hot-finished tubular steel members is presented in this paper. Stiffness reduction functions that fully capture the adverse influence of imperfections and plasticity on member stability are developed. The proposed SRM is implemented by (i) reducing the flexural stiffness (EI) of the member using the developed stiffness reduction functions, (ii) performing elastic Linear Buckling Analysis (LBA) and Geometrically Nonlinear Analysis (GNA) of the member with reduced flexural stiffness and (iii) making cross-section strength checks and ensuring that the lowest buckling load amplifier from LBA is greater than or equal to 1.0. Owing to the full allowance for the spread of plasticity, residual stresses and geometrical imperfections through stiffness reduction and instability effects through LBA and GNA, the proposed approach offers an enhanced and more direct assessment of structural behaviour relative to traditional design where structural analysis is accompanied by member design equations, effective lengths and the notional load concept. The proposed method is verified against nonlinear finite element modelling for a large number of tubular steel members. Comparisons of the proposed approach against the methods recommended in the European structural steel design code EN 1993-1-1 for the design of tubular members are also provided.
Item Type: | Journal Article | ||||||||
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Subjects: | T Technology > TA Engineering (General). Civil engineering (General) | ||||||||
Divisions: | Faculty of Science, Engineering and Medicine > Engineering > Engineering | ||||||||
Library of Congress Subject Headings (LCSH): | Tubular steel structures -- Design and construction | ||||||||
Journal or Publication Title: | Journal of Constructional Steel Research | ||||||||
Publisher: | Elsevier Ltd. | ||||||||
ISSN: | 0143-974X | ||||||||
Official Date: | September 2019 | ||||||||
Dates: |
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Volume: | 160 | ||||||||
Page Range: | pp. 340-358 | ||||||||
DOI: | 10.1016/j.jcsr.2019.05.039 | ||||||||
Status: | Peer Reviewed | ||||||||
Publication Status: | Published | ||||||||
Access rights to Published version: | Restricted or Subscription Access | ||||||||
Date of first compliant deposit: | 13 June 2019 | ||||||||
Date of first compliant Open Access: | 12 June 2020 |
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