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原文传递 Tests of Cold-Formed Steel Semi-Oval Hollow Section Members under Eccentric Axial Load

题名：	Tests of Cold-Formed Steel Semi-Oval Hollow Section Members under Eccentric Axial Load
正文语种：	英文
作者：	Man-Tai Chen, A.M.ASCE;Ben Young, F.ASCE
作者单位：	Shanghai Jiao Tong Univ;Univ, of Hong Kong
关键词：	Beam-column tests; Cold-formed; Seamless steel; Semi-oval hollow sections (SOHS); Structural design
摘要：	This paper describes the experimental study conducted on cold-formed steel semi-oval hollow sections (SOHS) under combined compression and uniaxial bending. Thirty-seven SOHS beam-columns with two different specimen lengths were compressed at various loading eccentricities in order to investigate the load-moment interaction relationship for each test series. The ultimate load-carrying capacities and full load-displacement responses are presented. It should be noted that the design of cold-formed steel semi-oval slender sections is not included in current design specifications. Nevertheless, the sections included in the test program were shown to be compact sections in both compression and bending. Therefore, by incorporating with the interaction curves specified in these design specifications, the test strengths were compared with the design predictions. The applicability and reliability of the current design rules for cold-formed steel compact SOHS beam-column members were assessed in this study. Generally, the predictions by these design specifications are quite conservative and scattered for eccentric loaded compact SOHS, but only the North American and American Specifications are considered to be reliable. Overall, the American Specification provides reliable, less conservative, and less scattered predictions, though further improvements remain possible.
出版日期：	2020
出版年：	2020
期刊名称：	Journal of Structural Engineering
卷：	Vol.146
期：	No.04
页码：	04020027