A unified interaction equation for strength and global stability of solid and hollow concrete-filled steel tube columns under room and elevated temperatures

Yu, Min and Xu, Haoming and Ye, Jianqiao and Chi, Yin (2018) A unified interaction equation for strength and global stability of solid and hollow concrete-filled steel tube columns under room and elevated temperatures. Journal of Constructional Steel Research, 148. pp. 304-313. ISSN 0143-974X

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Abstract

On the basis of plastic limit analysis, this paper proposes a novel, simple and unified interaction equation (N-M) for Concrete-filled Steel Tube (CFST) columns subjected to combined compression and bending. A unique feature of the new N-M equation is that the single equation is valid for a range of columns that can be solid, hollow, circular, polygonal, short or long. The single equation can also apply to columns under both room and elevated temperatures. Validations against independent laboratory test, analytical and numerical results are carried out to assess the accuracy and applicability of the equation. The new equation agrees well with most of the results used in the comparisons. It can be concluded that the simple and unified equation can be used in practical design with sufficient accuracy.

Item Type:
Journal Article
Journal or Publication Title:
Journal of Constructional Steel Research
Additional Information:
This is the author’s version of a work that was accepted for publication in Journal of Constructional Steel Research. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in Journal of Constructional Steel Research, 148, 2018 DOI: 10.1016/j.jcsr.2018.05.026
Uncontrolled Keywords:
/dk/atira/pure/subjectarea/asjc/2500/2506
Subjects:
ID Code:
125960
Deposited By:
Deposited On:
18 Jun 2018 08:38
Refereed?:
Yes
Published?:
Published
Last Modified:
22 Sep 2020 03:57