Post-buckling behaviour and DSM design of web-stiffened lipped channel columns with distortional and local mode interaction

doi:10.1016/j.tws.2014.07.001

	Post-buckling behaviour and DSM design of web-stiffened lipped channel columns with distortional and local mode interaction
	He, Ziqi 2; Zhou, Xuhong 1,2; Liu, Zhanke 1; Chen, Ming 1,3
刊名	THIN-WALLED STRUCTURES
	2014-11
卷号	84 页码:189-203
关键词	Lipped channel columns Web-stiffened section Local-distortional interactive failure Distortional-local interactive failure Ultimate strength Direct strength method (DSM)
ISSN号	0263-8231
DOI	10.1016/j.tws.2014.07.001
英文摘要	This paper examines the design and load-carrying capacity of fixed-ended web-stiffened lipped channel columns eroded by mode interaction behaviour combined with distortional and local deformations. Initially, the paper presents the results of an experimental investigation of compressive tests on web-stiffened lipped channel columns fabricated from cold-formed mild steel with a thickness of 1.50 mm, which is aimed at determining their failure load-carrying capacity; the experimental investigation also aims to provide experimental evidence of the occurrence of such coupling phenomena concerning distortional and local modes, namely, local-distortional interaction and distortional-local interactive failures. Then, the paper examines the ultimate strength data of experimental columns, both reported in this paper and collected from the literature, and concludes that the current direct strength method (DSM) provides very unsafe predictions concerning such a detrimental interaction nature. Next, two DSM-based design approaches, namely, the nominal strength against local-distortional (NLD) and distortional-local (NDL) procedures, are presented and evaluated on the basis of all available experimental ultimate strength data. Finally, proposals and design considerations based on the DSM-shape for the thin-walled cold-formed steel sections, which fail in mixed modes of distortional and local buckling, are presented. (C) 2014 Elsevier Ltd. All rights reserved.
资助项目	Fundamental Research Funds for the Central Universities[Izujbky-2013-m01]
WOS研究方向	Engineering
语种	英语
出版者	ELSEVIER SCI LTD
WOS记录号	WOS:000343360200016
状态	已发表
内容类型	期刊论文
源URL	[http://119.78.100.223/handle/2XXMBERH/34260]
专题	企业单位划归国资委人员
通讯作者	He, Ziqi
作者单位	1.Lanzhou Univ, Minist Educ, Key Lab Mech Disaster & Environm Western China, Lanzhou 730000, Peoples R China 2.Chongqing Univ, Coll Civil Engn, Chongqing 400045, Peoples R China 3.Lanzhou Univ Technol, Sch Civil Engn, Lanzhou 730000, Peoples R China
推荐引用方式 GB/T 7714	He, Ziqi,Zhou, Xuhong,Liu, Zhanke,et al. Post-buckling behaviour and DSM design of web-stiffened lipped channel columns with distortional and local mode interaction[J]. THIN-WALLED STRUCTURES,2014,84:189-203.
APA	He, Ziqi,Zhou, Xuhong,Liu, Zhanke,&Chen, Ming.(2014).Post-buckling behaviour and DSM design of web-stiffened lipped channel columns with distortional and local mode interaction.THIN-WALLED STRUCTURES,84,189-203.
MLA	He, Ziqi,et al."Post-buckling behaviour and DSM design of web-stiffened lipped channel columns with distortional and local mode interaction".THIN-WALLED STRUCTURES 84(2014):189-203.