Buckling analyses of cold-formed steel lipped channel members under minor-axis eccentric load

被引：3

作者：

He, Yiming ^{[1
]}

Dai, Liusi ^{[1
]}

Ren, Chong ^{[1
]}

机构：

[1] Shanghai Univ, Dept Civil Engn, Shanghai 200444, Peoples R China

来源：

JOURNAL OF CONSTRUCTIONAL STEEL RESEARCH | 2023年 / 211卷

基金：

上海市自然科学基金;

关键词：

Cold-formed steel lipped channel section; Combined compression and minor axis bending; Buckling interaction; Direct strength method; DIRECT STRENGTH METHOD; SECTIONS; COLUMNS; DESIGN;

D O I：

10.1016/j.jcsr.2023.108181

中图分类号：

TU [建筑科学];

学科分类号：

0813 ;

摘要：

This paper numerically investigates the buckling behavior of cold-formed steel (CFS) lipped channel members under combined compression and minor axis bending (CaMAB). The numerical models are validated against existing tests. The influences of eccentricity on buckling behaviors are studied, and the results indicate that for the eccentricity toward the web side or lipped side, the failure modes of structural members are mainly controlled by local-global buckling interactions or distortional-global buckling interactions, respectively. The maximum ultimate load capacity may occur at the eccentricity toward the lipped side. Furthermore, a comparison of the load capacity obtained from the interaction formula of the standard EN 1993-1-3 and finite element analysis (FEA) is presented. In addition, the current direct strength method (DSM) curves are modified by considering the effect of the buckling interaction.

引用

页数：17

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