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ISO Standard Fire Tests of Concrete-Filled Steel Tube Columns with Solid Steel Core
| 题名： | ISO Standard Fire Tests of Concrete-Filled Steel Tube Columns with Solid Steel Core |
| 正文语种： | 英文 |
| 作者： | Martin Neuenschwander; Markus Knobloch;Mario Fontana |
| 作者单位： | Institute of Structural Engineering, Swiss Federal Institute of Technology (ETH) Zurich;Dept, of Civil and Environmental Engineering, Ruhr-Universitat Bochum;Swiss Federal Institute of Technology (ETH) Zurich |
| 关键词： | Fire tests; Concrete-filled steel tube columns with solid steel core; Thermomechanical behavior; Fire resistance; Structural fire design; Steel-concrete composite columns; Boundary conditions in fire tests. |
| 摘要： | Concrete-filled steel tube columns with solid steel core are prefabricated innovative composite columns that are especially designed to achieve high fire resistance, even with high slenderness ratios and load levels. These features make them architecturally and economically appealing for use in high-rise buildings. Conceptually, their exceptional structural fire behavior is attributed to a process of gradual load redistribution to the solid steel core during fire that is thermally protected by the concrete infill. In this paper the results of a series of four ISO fire tests with concrete-filled steel tube columns with solid steel core of three different cross-sectional types and two different end conditions are presented. This novel experimental database for this type of composite column (1) validates the concept of their structural fire behavior; and (2) shows that, without additional fire protection, extraordinary fire resistance of almost 180 min can be achieved with common slenderness and load ratios with respect to building practice. DOI: 10.106l/(ASCE)ST.1943-541X.0001695. © 2016 American Society of Civil Engineers. |
| 出版日期： | 2017.04 |
| 出版年： | 2017 |
| 期刊名称： | Journal of Structural Engineering |
| 卷： | Vol.143 |
| 期： | NO.04 |
| 页码： | 04016211 |
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