Axially Loaded Concrete-Filled Steel Tubes
Axially Loaded Concrete-Filled Steel Tubes
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DOI：
10.1061/(asce)0733-9445(1998)124:10(1125
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发表时间：
1998-10
期刊：
影响因子：
--
通讯作者：
S. P. Schneider
中科院分区：
文献类型：
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作者：
S. P. Schneider
本文介绍了钢管混凝土短柱在集中荷载作用下的试验和分析研究。通过14个试件的试验研究了钢管形状和壁厚对组合柱极限承载力的影响。还讨论了由管形状提供的混凝土芯的限制。研究了深度与管壁厚度之比在17 <D/t< 50之间，长度与管深度之比在4 <L/D< 5之间。极限强度结果进行了比较，目前规范的钢管混凝土柱的设计。非线性有限元模型的开发和验证实验结果。分析模型被进一步用于调查设计规格的充分性。实验结果表明，圆管提供大量的屈服后强度和刚度，在大多数正方形或矩形截面中不可用。通过这些结果还观察到...
This paper presents an experimental and analytical study on the behavior of short, concrete-filled steel tube columns concentrically loaded in compression to failure. Fourteen specimens were tested to investigate the effect of the steel tube shape and wall thickness on the ultimate strength of the composite column. Confinement of the concrete core provided by the tube shape was also addressed. Depth-to-tube wall thickness ratios between 17 <D/t< 50, and the length-to-tube depth ratios of 4 <L/D< 5 were investigated. Ultimate strength results were compared to current specifications governing the design of concrete-filled steel tube columns. Nonlinear finite-element models were developed and verified using experimental results. The analytical models were further used to investigate the adequacy of design specifications. Experimental results suggest that circular tubes offer substantial post-yield strength and stiffness, not available in most square or rectangular cross sections. Also observed by these resul...