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Simple Three-Coefficient Equation for Temperature-Dependent Mechanical Properties of Cold-Formed Steels
| 题名： | Simple Three-Coefficient Equation for Temperature-Dependent Mechanical Properties of Cold-Formed Steels |
| 正文语种： | eng |
| 作者： | Yan, Xia;Abreu, Jean C. Batista;Glauz, Robert S.;Schafer, Benjamin W.;Gernay, Thomas |
| 作者单位： | Johns Hopkins Univ Dept Civil & Syst Engn Baltimore MD 21218 USA;Elizabethtown Coll Dept Engn & Phys Elizabethtown PA 17022 USA;RSG Software Inc 2803 NW Chipman Rd Lees Summit MO 64081 USA;Johns Hopkins Univ Dept Civil & Syst Engn Baltimore MD 21218 USA;Johns Hopkins Univ Dept Civil & Syst Engn Baltimore MD 21218 USA |
| 关键词： | Cold-formed steel;Mechanical properties;Retention factor;Experimental tests;Fire;Performance-based fire design |
| 摘要： | The objective of this paper is to propose relationships for the reduction in mechanical properties of cold-formed steels at elevated temperature. Predicting the degradation of strength and modulus of cold-formed steels with temperature is critical to enable fire design of cold-formed steel members. Here, the properties of elastic modulus, 0.2% proof stress, 2% stress, and ultimate stress are studied for grades up to and including 550 MPa. Data are collected from the literature as well as from recent tests conducted by the authors at Johns Hopkins University. Steady-state and transient test results in the range of 20 degrees C-1,000 degrees C are analyzed. Retention factors are then proposed for the mechanical properties adopting a standardized format developed through committee work with the American Iron and Steel Institute. (C) 2021 American Society of Civil Engineers. |
| 出版年： | 2021 |
| 期刊名称： | Journal of structural engineering |
| 卷： | 147 |
| 期： | 4 |
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