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Reliability considerations of modern design codes for CFST columns
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Thai, Huu-Tai, Thaib, Son, Ngoa, Tuan, Uyc, Brian, Kangd, Won-Hee and Hicks, Stephen J. (2021) Reliability considerations of modern design codes for CFST columns. Journal of Constructional Steel Research, 177 . 106482. doi:10.1016/j.jcsr.2020.106482 ISSN 0143-974X.
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WRAP-Reliability-considerations-modern-design-codes-CFST-columns-Hicks-2020.pdf - Accepted Version - Requires a PDF viewer. Download (4024Kb) | Preview |
Official URL: https://doi.org/10.1016/j.jcsr.2020.106482
Abstract
Concrete filled steel tubular (CFST) columns have been increasingly used in tall buildings and bridges due to offering excellent structural and economic benefits. Current design codes for such columns exhibit certain limits in terms of material strengths and section slenderness. This paper aims to evaluate the reliability and the applicability of the current design equations in American code AISC 360–16, European code EC 4 and Australian/New Zealand code ASNZS 2327 for the design of the columns beyond their material and slenderness limits. A comprehensive database with over 3200 tests was collected to develop the statistics of the model errors for different types of columns. Monte Carlo and subset simulation techniques were developed based on Markov Chain Monte Carlo algorithms, to accurately and efficiently predict the reliability index of structures with small failure probability because they account for all uncertainties in material and geometric properties, loads and model errors. The results from the reliability analysis indicate that the reliability index of the concentric column designed by three considered codes is much higher than that of the eccentric column (i.e. beam-column). The results from a parametric study suggest that all three codes can be safely extended to the design of columns beyond the current material and section slenderness code limits.
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): | Columns, Concrete, Concrete-filled tubes -- Design and construction, Structural analysis (Engineering), Tubular steel structures -- Design and construction, Structural design, Reliability (Engineering) | ||||||||
Journal or Publication Title: | Journal of Constructional Steel Research | ||||||||
Publisher: | Elsevier Ltd. | ||||||||
ISSN: | 0143-974X | ||||||||
Official Date: | February 2021 | ||||||||
Dates: |
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Volume: | 177 | ||||||||
Article Number: | 106482 | ||||||||
DOI: | 10.1016/j.jcsr.2020.106482 | ||||||||
Status: | Peer Reviewed | ||||||||
Publication Status: | Published | ||||||||
Access rights to Published version: | Restricted or Subscription Access | ||||||||
Date of first compliant deposit: | 8 December 2020 | ||||||||
Date of first compliant Open Access: | 13 December 2021 | ||||||||
RIOXX Funder/Project Grant: |
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