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Compression Tests of Cold-Formed Steel C- and Z-Sections with Different Stiffeners
| 题名： | Compression Tests of Cold-Formed Steel C- and Z-Sections with Different Stiffeners |
| 正文语种： | 英文 |
| 作者： | Ju Chen1; Man-Tai Chen, A.M.ASCE2; Ben Young, F.ASCE3 |
| 作者单位： | 1Professor, Dept. of Civil Engineering, Zhejiang Univ., Hangzhou 310058, Zhejiang, China. 2Postdoctoral Fellow, Dept. of Civil Engineering, Univ. of Hong Kong, Pokfulam Rd., Hong Kong, China (corresponding author). 3Dept. of Civil and Environmental Engineering, Hong Kong Polytechnic Univ., Hong Kong, China; formerly, Professor, Dept. of Civil Engineering, Univ. of Hong Kong, Pokfulam Rd., Hong Kong, China. |
| 关键词： | Buckling; Cold-formed steel; Columns; Direct Strength Method; Experiments; Stiffeners |
| 摘要： | This paper describes an experimental investigation of stub column tests of cold-formed steel C- and Z-sections with different stiffeners. The experimental program consisted of 30 fixed-ended column tests of 6 series of C-sections and 4 series of Z-sections. The configurations of stiffeners comprised simple edge stiffeners, simple lips with inward or outward return lips, and intermediate web stiffeners. The specimens were brake-pressed from high-strength zinc-coated grades G450 and G550 structural steel sheets. The material properties were measured through tensile coupon tests. The load-carrying capacities, load-end shortening responses, and failure modes of stub column specimens are presented and discussed in this paper. The test strengths and observed failure modes were compared with the design strengths and failure modes predicted by the Direct Strength Method. The comparison showed that the Direct Strength Method provides accurate and reliable design strength predictions for C- and Z-sections with different edge stiffeners but provides less accurate design strength predictions for C-sections with intermediate web stiffeners. |
| 出版年： | 2019 |
| 期刊名称： | Journal of Structural Engineering |
| 卷： | 145 |
| 期： | 5 |
| 页码： | 1-10 |
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