Behaviour of concrete filled steel tubular (CFST) stub columns under eccentric partial compression

Behaviour of concrete filled steel tubular (CFST) stub columns under eccentric partial compression
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钢管混凝土(CFST)短柱在偏心部分受压下的性能

DOI:
10.1016/j.tws.2010.09.024
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发表时间:
2011-02
影响因子:
6.4
通讯作者:
Han Lin-Hai
Han Lin-Hai
中科院分区:
工程技术2区
文献类型:
--
作者:
Yang You-Fu;Han Lin-Hai

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研究了钢管混凝土偏压短柱的受力性能。28个样本进行了测试和介绍。试验方案中的主要参数包括:(1)截面类型:圆形、方形和矩形;(2)荷载偏心率(包括单轴和双轴荷载):从0到0.4;(3)承载板(BP)形状:圆形、方形、条形和矩形。试验结果表明,钢管混凝土偏心受压短柱与相应的钢管混凝土偏压短柱具有相似的承载力和良好的延性。建立了钢管混凝土偏心受压短柱的有限元分析模型,并通过实测结果验证了模型的正确性。有限元模型,然后使用这种组合柱进一步调查的机制。
This paper investigates the behaviour of concrete filled steel tubular (CFST) stub columns subjected to eccentric partial compression. Twenty-eight specimens were tested and presented. The main parameters in test program include: (1) section type: circular, square and rectangular; (2) load eccentricity ratio (including uniaxial and biaxial loading): from 0 to 0.4; and (3) shape of the loading bearing plate (BP): circular, square, strip and rectangular. The test results indicated that, similar to the corresponding fully loaded CFST stub columns under eccentric loading, CFST stub columns under eccentric partial compression have generally reasonable bearing capacity and favorable ductility. A finite element analysis (FEA) model for CFST stub columns under eccentric partial compression is developed and the predicted performances are validated through measured results. The FEA model is then used to investigate the mechanisms of such composite columns further.
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