Local and post-local buckling of steel tubes in thin-walled circular concrete-filed steel tubular columns

Walker, Craig Louis (2006) Local and post-local buckling of steel tubes in thin-walled circular concrete-filed steel tubular columns. [USQ Project]

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Abstract

The local and post-local buckling behaviour of steel tubes in thin-walled circular
concrete-filled steel tubular columns under axial load is presented. Geometric and
material nonlinear finite element analysis is conducted on steel tubes under
uniform edge compression to determine critical local and post-local buckling
strengths.
The local and post-local buckling of steel tubes reduces the ultimate loads of thinwalled
circular CFST columns under axial compression. Limited experimental
research on CFST columns has been conducted. The effects of local and postlocal
buckling on the behaviour of thin-walled circular CFST columns have not
been adequately researched.
Three-dimensional finite element models are developed using the finite element
technique. Initial geometric imperfections, residual stresses, material yielding and
strain hardening are considered in the analysis. Based on the results obtained from
the nonlinear finite element analysis, a set of design formulas is proposed for
determining the critical local buckling loads and ultimate strengths of steel tubes
in thin-walled circular CFST columns. The proposed design formulas are verified
by comparisons with existing experimental results.

Statistics for this ePrint Item

Item Type:	USQ Project
Refereed:	No
Item Status:	Live Archive
Faculty/School / Institute/Centre:	Historic - Faculty of Engineering and Surveying - Department of Agricultural, Civil and Environmental Engineering (Up to 30 Jun 2013)
Date Deposited:	11 Oct 2007 01:03
Last Modified:	09 Nov 2022 01:08
Uncontrolled Keywords:	concrete-filled steel tubular (CFST); buckling; tubular columns
Fields of Research (2008):	09 Engineering > 0912 Materials Engineering > 091299 Materials Engineering not elsewhere classified 09 Engineering > 0905 Civil Engineering > 090506 Structural Engineering 09 Engineering > 0912 Materials Engineering > 091207 Metals and Alloy Materials
Fields of Research (2020):	40 ENGINEERING > 4016 Materials engineering > 401699 Materials engineering not elsewhere classified 40 ENGINEERING > 4005 Civil engineering > 400510 Structural engineering 40 ENGINEERING > 4016 Materials engineering > 401607 Metals and alloy materials
URI:	https://sear.unisq.edu.au/id/eprint/2334

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