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Journal of Zhejiang University SCIENCE A 2011 Vol.12 No.2 P.131-138

10.1631/jzus.A1000185


Numerical investigation and design of thin-walled complex section steel columns


Author(s):  Su-qing Huang, Ju Chen, Wei-liang Jin

Affiliation(s):  Department of Civil Engineering, Zhejiang College of Construction, Hangzhou 311200, China, Department of Civil Engineering, Zhejiang University, Hangzhou 310058, China

Corresponding email(s):   cecj@zju.edu.cn

Key Words:  Complex section column, Distortional buckling, Finite element method (FEM), Intermediate stiffener


Su-qing Huang, Ju Chen, Wei-liang Jin. Numerical investigation and design of thin-walled complex section steel columns[J]. Journal of Zhejiang University Science A, 2011, 12(2): 131-138.

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author="Su-qing Huang, Ju Chen, Wei-liang Jin",
journal="Journal of Zhejiang University Science A",
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%T Numerical investigation and design of thin-walled complex section steel columns
%A Su-qing Huang
%A Ju Chen
%A Wei-liang Jin
%J Journal of Zhejiang University SCIENCE A
%V 12
%N 2
%P 131-138
%@ 1673-565X
%D 2011
%I Zhejiang University Press & Springer
%DOI 10.1631/jzus.A1000185

TY - JOUR
T1 - Numerical investigation and design of thin-walled complex section steel columns
A1 - Su-qing Huang
A1 - Ju Chen
A1 - Wei-liang Jin
J0 - Journal of Zhejiang University Science A
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SP - 131
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PB - Zhejiang University Press & Springer
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DOI - 10.1631/jzus.A1000185


Abstract: 
A numerical investigation of thin-walled complex section steel columns with intermediate stiffeners was performed using finite element analysis. An accurate and reliable finite element model was developed and verified against test results. Verification indicates that the model could predict the ultimate strengths and failure modes of the tested columns with reasonable accuracy. Therefore, the developed model was used for the parametric study. In addition, the effect of geometric imperfection on column ultimate strength and the effect of boundary conditions on the elastic distortional buckling of complex section columns were investigated. An equation for the elastic distortional buckling load of fixed-ended columns having different column lengths was proposed. The elastic distortional buckling load obtained from the proposed equation was used in the direct strength method to calculate the column ultimate strength. Generally, it is shown that the proposed design equation conservatively predicted the ultimate strengths of complex section columns with different column lengths.

Darkslateblue:Affiliate; Royal Blue:Author; Turquoise:Article

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