Nonlinear analysis of short concrete-filled steel tubular beam-columns under axial load and biaxial bending
Article
Article Title | Nonlinear analysis of short concrete-filled steel tubular beam-columns under axial load and biaxial bending |
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ERA Journal ID | 4225 |
Article Category | Article |
Authors | |
Author | Liang, Qing Quan |
Journal Title | Journal of Constructional Steel Research |
Journal Citation | 64 (3), pp. 295-304 |
Number of Pages | 10 |
Year | 2008 |
Publisher | Elsevier |
Place of Publication | Oxford, United Kingdom |
ISSN | 0143-974X |
1873-5983 | |
Digital Object Identifier (DOI) | https://doi.org/10.1016/j.jcsr.2007.07.001 |
Web Address (URL) | http://www.elsevier.com/wps/find/journaldescription.cws_home/405901/description#description |
Abstract | This paper presents a nonlinear fiber element analysis method for determining the axial load-moment strength interaction diagrams for short concrete-filled steel tubular (CFST) beam-columns under axial load and biaxial bending. Nonlinear constitutive models for confined concrete and structural steel are considered in the fiber element analysis. Efficient secant algorithms are developed to iterate the depth and orientation of the neutral axis within a composite section to satisfy equilibrium conditions. The accuracy of the fiber element analysis program is verified by comparisons of fiber analysis results with experimental data and existing solutions. The fiber element analysis program developed is employed to study the effects of steel ratios, concrete strengths and steel yield strengths on axial load-moment interaction diagrams, the C-ratio and maximum ultimate moments of CFST beam-columns. The proposed fiber element analysis technique is shown to be efficient and accurate and can be used directly in the design of CFST beam-columns and in advanced analysis programs for the nonlinear analysis of composite columns and frames. |
Keywords | biaxial bending; composite columns; fiber element analysis; nonlinear analysis; strength |
ANZSRC Field of Research 2020 | 400505. Construction materials |
400510. Structural engineering | |
490304. Optimisation | |
Public Notes | Files associated with this item cannot be displayed due to copyright restrictions. |
Byline Affiliations | Department of Agricultural, Civil and Environmental Engineering |
https://research.usq.edu.au/item/9yq4z/nonlinear-analysis-of-short-concrete-filled-steel-tubular-beam-columns-under-axial-load-and-biaxial-bending
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