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Behavior of Concrete-Filled Circular, Square, Rectangular, and Elliptical Hollow Columns Subjected to Fire
| 题名： | Behavior of Concrete-Filled Circular, Square, Rectangular, and Elliptical Hollow Columns Subjected to Fire |
| 其他题名： | Ali,F.,and O'Connor,D.(2001)."Structural performance of rotationally restrained steel columns in fire."Fire Saf.J.,36(7),679-691. |
| 正文语种： | 英文 |
| 作者： | Jo(a)o P. C. Rodrigues |
| 关键词： | Fire resistance;Hollow section;Steel;Concrete;Column;Thermal restraining |
| 摘要： | This paper presents and discusses the results of experiments on the behavior of composite columns made of concrete-filled hollow sections subjected to fire and restrained thermal elongation. Several parameters that may influence the behavior of such columns in case of fire were tested, such as: slenderness, cross-sectional shape, and restraint caused by the surrounding structure on the column subjected to fire. In fire resistance tests, specimens were subjected to the standard fire curve, and critical time, critical temperature, and corresponding buckling modes were assessed. The experimental results were also compared with results from available analytical models to determine whether they are safe and consistent for fire design. Finally, the results showed that column fire resistance may not be significantly affected by the stiffness of the surrounding structure, and that the simplified calculation method for the fire design of concrete-filled hollow sections presented in Annex H of Eurocode 4 part 1.2 is unsafe, except for elliptical columns. |
| 出版年： | 2018 |
| 论文唯一标识： | P-26Y2018V144N06004 |
| 英文栏目名称： | TECHNICAL PAPERS |
| doi： | 10.1061/(ASCE)ST.1943-541X.0002035 |
| 期刊名称： | Journal of Structural Engineering |
| 拼音刊名(出版物代码)： | P-26 |
| 卷： | 144 |
| 期： | 06 |
| 页码： | 34-45 |
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