Experimental investigation and finite element analysis of web-stiffened cold-formed lipped channel columns with batten sheets

doi:10.1016/j.tws.2018.01.006

	Experimental investigation and finite element analysis of web-stiffened cold-formed lipped channel columns with batten sheets
	Zhou, Xuhong 1,3; Chen, Ming 1,2
刊名	Thin-Walled Structures
	2018-04-01
卷号	125 页码:38-50
关键词	Buckling Compressive strength Software testing Batten sheet Buckling mode Experimental investigations Lipped channel columns Ultimate strength
ISSN号	02638231
DOI	10.1016/j.tws.2018.01.006
英文摘要	This paper presents an experimental investigation and a finite element analysis on web-stiffened cold-formed lipped channel columns with batten sheets connected between the column's two lips at reasonable space. Initially, the paper presents the static compressive test results on 18 specimens under pinned-end restraint conditions with different column length and load eccentricities considered. It is shown that the batten sheets exert significant influence on both the buckling modes and the ultimate strength of the specimens under positive eccentric loading and/or axial loading conditions, while they just have few impacts on that of the specimens under negative eccentric compression. Strengthened by the batten sheets, the columns performed obviously higher ultimate strength under axial and positive eccentric compression compared with the ones without batten sheets and the strengthening effect increase with the increase of column length. Furthermore, the tested specimens were also numerically investigated by finite element program of ANSYS. Geometric and material nonlinearities were both included in the finite element models and it is demonstrated that the numerical analysis can closely predict the ultimate strength and the buckling behavior of the tested columns. Finally, a parametric study was conducted by using program of ANSYS, in which effect of the increasing lip stiffener width and varying batten sheet space were all investigated and it is concluded that the contribution of the batten sheets to the columns’ strength decreased notably with the increasing lip width or batten sheets’ space for axial and/or positive compressed columns. The best choice of the distance between batten sheets (d≤λ/3) for axial compressed lipped channel columns must also be a reasonable choice for positive compressed columns. © 2018 Elsevier Ltd
资助项目	National Natural Science Foundation of China - through the research project "Theoretical and Experimental Study on Distortional Buckling and Its Interaction Buckling of Cold-formed Steel Thin-walled Members in Compression"[50978128]
WOS研究方向	Engineering
语种	英语
出版者	Elsevier Ltd
WOS记录号	WOS:000428832600004
状态	已发表
内容类型	期刊论文
源URL	[http://ir.lut.edu.cn/handle/2XXMBERH/114581]
专题	企业单位划归国资委人员
通讯作者	Chen, Ming
作者单位	1.Lanzhou Univ, Sch Civil Engn & Mech, Lanzhou 730000, Gansu, Peoples R China 2.Lanzhou Univ Technol, Sch Civil Engn, Lanzhou 730050, Gansu, Peoples R China 3.Chongqing Univ, Sch Civil Engn, Chongqing 400045, Peoples R China
推荐引用方式 GB/T 7714	Zhou, Xuhong,Chen, Ming. Experimental investigation and finite element analysis of web-stiffened cold-formed lipped channel columns with batten sheets[J]. Thin-Walled Structures,2018,125:38-50.
APA	Zhou, Xuhong,&Chen, Ming.(2018).Experimental investigation and finite element analysis of web-stiffened cold-formed lipped channel columns with batten sheets.Thin-Walled Structures,125,38-50.
MLA	Zhou, Xuhong,et al."Experimental investigation and finite element analysis of web-stiffened cold-formed lipped channel columns with batten sheets".Thin-Walled Structures 125(2018):38-50.