Experimental evaluation of DSM beam-column strength of cold-formed steel members under uniaxial eccentric compression

被引：6
作者：
Rajkannu, J. Sevugan [1 ]
Jayachandran, S. Arul [1 ]
机构：
[1] Indian Inst Technol Madras, Dept Civil Engn, Chennai 600036, Tamil Nadu, India
来源：
THIN-WALLED STRUCTURES | 2022年 / 174卷
关键词：
Beam-column; Direct strength method (DSM); Distortional-global interaction; Linear interaction; Non-linear interaction; TESTS; CHANNELS; BEHAVIOR;
D O I：
10.1016/j.tws.2022.109096
中图分类号：
TU [建筑科学];
学科分类号：
0813 ;
摘要：
In this paper, the direct strength method (DSM) design of cold-formed steel (CFS) beam-column is evaluated using the results of controlled experiments. The experimental setup is devised to create a uniform moment along the member length about both the major and the minor axes of the member. A comparison of code provisions of AISI S100-2016 for CFS beam-column design against twenty-two experiments reveals a disagreement when the failure mode is due to an interaction of distortional-flexural torsional (D+FTB) buckling. The study proposes a modification to the linear interaction framework (LI) and nonlinear interaction (NLI) framework to include the distortional-global (D-G) interaction. These modifications have been demonstrated to result in strength predictions that are closer to the experimental evidence.
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页数：13
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