The Open Civil Engineering Journal




ISSN: 1874-1495 ― Volume 13, 2019
RESEARCH ARTICLE

Design Reliability Analysis of Cold-Formed Thin-Walled Steel Members with Lipped Channel Sections Considering Distortional Buckling



Yao Xingyou1, 2, *
1 Nanchang Institute of Technology, Jiangxi Province Key Laboratory of Hydraulic and Civil Engineering Infrastructure Security, Nanchang, Jiangxi 330099, China
2 Nanchang Institute of Technology, Jiangxi Provincial Engineering Research Center of the Special Reinforcement and Safety Monitoring Technology in Hydraulic & Civil Engineering, Nanchang 330099, China

Abstract

Introduction:

Based on the experimental results of cold-formed thin-walled steel lipped channel sections, the uncertainty of calculating mode of load-carrying capacity using effective width method considering distortional buckling for different material types cold-formed steel compressed members was researched, and the uncertainties of material strength and geometric characteristics of the typical sections were statistically analyzed.

Methods:

According to the recommended resistance of partial coefficient in the draft of Technical code of cold-formed steel structures (GB50018-), the reliability indexes of cold-formed thin-walled steel lipped channel sections under compression were investigated using the improved first-order second-moment method considering different possible external loading combinations.

Results:

The analyzed results show that, using the recommended resistance partial coefficient in the code draft, the reliability indexes of the compressed members with width-thickness ratio within the limitation of code draft can well met the target reliability index. The suitability of the corresponding calculating modes of load-carrying capacity considering distortional buckling was established.

Keywords: Cold-formed thin-walled steel, Lipped channel sections, Distortional buckling, Effective width method, Reliability, Width-thickness.


Article Information


Identifiers and Pagination:

Year: 2017
Volume: 11
First Page: 906
Last Page: 918
Publisher Id: TOCIEJ-11-906
DOI: 10.2174/1874149501711010906

Article History:

Received Date: 07/08/2017
Revision Received Date: 30/09/2017
Acceptance Date: 13/10/2017
Electronic publication date: 21/11/2017
Collection year: 2017

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© 2017 Yao Xingyou.

open-access license: This is an open access article distributed under the terms of the Creative Commons Attribution 4.0 International Public License (CC-BY 4.0), a copy of which is available at: https://creativecommons.org/licenses/by/4.0/legalcode. This license permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.


* Address correspondence to this author at the Nanchang Institute of Technology, Jiangxi Province Key Laboratory of Hydraulic and Civil Engineering Infrastructure Security; Nanchang Institute of Technology, Jiangxi Provincial Engineering Research Center of the Special Reinforcement and Safety Monitoring Technology in Hydraulic & Civil Engineering, Nanchang 330099, China; Tel: 15079190103; E-mails: yaoxingyontj@163.com, yaoxingyoujd@163.com


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