An experimental study and calculation on the fire resistance of concrete-filled SHS and RHS columns
An experimental study and calculation on the fire resistance of concrete-filled SHS and RHS columns
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DOI：
10.1016/s0143-974x(02)00041-x
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发表时间：
2003-04-01
影响因子：
4.1
通讯作者：
Xu, L
中科院分区：
文献类型：
--
作者：
Han, LH;Yang, YF;Xu, L
对带或不带防火保护的钢混凝土方形空心截面 (SHS) 和矩形空心截面 (RHS) 柱在承受轴向或偏心荷载时的性能进行了实验研究，并在本文中介绍了结果。参数和实验研究为复合柱耐火性和防火厚度计算公式的制定提供了信息。本文的主要目标有三个：首先，报告对方形和矩形截面的组合柱进行的一系列防火测试。其次，分析了火灾持续时间、截面尺寸、长细比、荷载偏心比、钢材和混凝土强度等几个参数对残余强度的影响。复合列的索引 (RSI)。最后，制定了钢混凝土SHS和RHS柱的耐火极限和防火厚度的计算公式，该公式适合纳入建筑规范。本文的概念用于为中国南方杭州市瑞丰商业大厦高层建筑中使用的钢混凝土 SHS 柱所需的防火措施提供数据。 (C) 2002 Elsevier Science Ltd. 保留所有权利。
The behavior of concrete-filled steel square hollow section (SHS) and rectangular hollow section (RHS) columns with or without fire protection subjected to axial or eccentric loads has been experimentally investigated and the results are presented in this paper. The parametric and experimental studies provide information for the development of formulas for the calculation of the fire resistance and the fire protection thickness of the composite columns. The main objectives of this paper were threefold: first, to report a series of fire tests on composite columns with square and rectangular sections. Secondly, to analyze the influence of several parameters, such as fire duration time, sectional dimension, slenderness ratio, load eccentricity ratio, strength of steel and concrete on the residual strength. index (RSI) of the composite columns. Finally, to develop formulas for the calculation of the fire resistance and the fire protection thickness of the concrete-filled steel SHS and RHS columns, such formulas to be suitable for incorporation into building codes. The concepts of this paper were used to provide data on the necessary fire protection measures for the concrete-filled steel SHS columns used in a high-rise building, Ruifeng, Shangye Building in Hangzhou City, in southern China. (C) 2002 Elsevier Science Ltd. All rights reserved.