An analytical solution of distortional buckling resistance of cold-formed steel channel-section beams with web openings

被引：36

作者：

Yu, Nan-ting ^{[1
,2
]}

Kim, Boksun ^{[2
]}

Yuan, Wei-bin ^{[1
,3
]}

Li, Long-yuan ^{[2
]}

Yu, Feng ^{[1
]}

机构：

[1] Zhejiang Univ Technol, Coll Architecture & Civil Engn, Hangzhou 310023, Zhejiang, Peoples R China

[2] Univ Plymouth, Sch Engn, Plymouth PL4 8AA, Devon, England

[3] Key Lab Civil Engn Struct & Disaster Prevent & Mi, Hangzhou 310023, Zhejiang, Peoples R China

来源：

THIN-WALLED STRUCTURES | 2019年 / 135卷

关键词：

Cold-formed steel; Channel section; Distortional buckling; Circular openings; Analytical solution; Finite element analysis; DIRECT STRENGTH METHOD; FINITE STRIP ANALYSIS; PERFORATED SECTIONS; ULTIMATE STRENGTH; AXIAL-COMPRESSION; PLATES; DESIGN; HOLES; STABILITY; BEHAVIOR;

D O I：

10.1016/j.tws.2018.11.012

中图分类号：

TU [建筑科学];

学科分类号：

0813 ;

摘要：

Circular holes can be commonly found in the web of cold-formed steel beams to accommodate services such as electric wires and pipelines. The presence of holes will reduce the critical buckling stress of the beams. Hancock proposed solution for determining the distortional critical stress of channel section beams, but limited to the sections without holes. This paper presents an analytical study on the distortional buckling of cold-formed steel channel-section beams with circular holes in the web. Hancock's solution has been modified to derive a simple formulation for approximating the elastic critical stress and moment of distortional buckling of the channel-section beams with circular holes in the web, which are compared with those from the finite element buckling analysis using ANSYS. Finally, the influence of multiple holes on the distortional buckling behaviour and corresponding elastic buckling stress of beams in bending is discussed.

引用

页码：446 / 452

页数：7

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