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填充高性能混凝土的中空截面钢柱近年来由于其众多优点而被广泛采用。然而,尽管填充普通混凝土的中空截面钢柱的设计方法已经成熟,但对于填充高强混凝土还有很多不确定之处。介绍针对填充高性能混凝土的钢柱性能的数值分析结果进行介绍。基于北美和欧洲对高强混凝土和钢材材料特性的研究进行分析。结果显示:可以通过在高强混凝土中加入钢丝纤维来提高中空截面柱的抗火能力。
Hollow cross-section steel columns filled with high-performance concrete have been widely adopted in recent years due to their numerous advantages. However, although the design method of hollow section steel columns filled with normal concrete is mature, there are still many uncertainties about filling high-strength concrete. This paper introduces the numerical analysis results of steel columns filled with high performance concrete. Based on North American and European research on the properties of high-strength concrete and steel materials. The results show that the fire resistance of hollow section columns can be improved by adding steel fiber into high-strength concrete.