Fire performance of concrete filled stainless steel tubular columns
Fire performance of concrete filled stainless steel tubular columns
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DOI：
10.1016/j.engstruct.2013.05.005
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发表时间：
2013-11
影响因子：
5.5
通讯作者：
Lin-Hai Han;Feng Chen;Fei-Yu Liao;Z. Tao;B. Uy
中科院分区：
文献类型：
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作者：
Lin-Hai Han;Feng Chen;Fei-Yu Liao;Z. Tao;B. Uy
本文研究了五个全尺寸圆形和方形混凝土填充不锈钢管 (CFSST) 柱在标准耐火试验条件下承受轴向压缩的实验行为。外管采用 S30408（EN 1.4301 或 AISI 304）级奥氏体不锈钢，核心混凝土采用自密实混凝土。试验参数包括载荷水平、截面类型和尺寸。本文测量并报告了试件的截面温度分布、轴向变形和耐火性能，并提出了有限元模型，以进一步研究 CFSST 柱在高温下的失效机制。最后，通过比较 CFSST 柱与碳钢钢管混凝土柱的变形发展和破坏模式，确定了两种组合柱之间的防火性能差异。
This paper investigates the experimental behaviour of five full-scale circular and square concrete filled stainless steel tubular (CFSST) columns subjected to axial compression under standard fire test conditions. Grade S30408 (EN 1.4301 or AISI 304) austenitic stainless steel was used for the outer tubes and self-consolidating concrete for the core concrete. The test parameters include load level, sectional type and dimension. Sectional temperature distribution, axial deformation and fire resistance of the specimens were measured and reported in this paper and a finite element model was presented to further study the failure mechanisms of CFSST columns at elevated temperatures. Finally, by comparing the deformation developments and failure modes of CFSST columns with those of concrete filled steel tubular columns comprised of carbon steel, differences of fire performance between the two types of composite columns were identified.