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首页> 外文期刊>Journal of Civil Engineering and Management >INVESTIGATION OF CONCRETE-FILLED STEEL COMPOSITE (CFSC) STUB COLUMNS WITH BAR STIFFENERS
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INVESTIGATION OF CONCRETE-FILLED STEEL COMPOSITE (CFSC) STUB COLUMNS WITH BAR STIFFENERS

机译：带钢筋加筋的钢管混凝土柱（CFSC）柱的研究

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摘要

This paper is concerned with the investigation of concrete-filled steel composite (CFSC) stub columns with bar stiffeners. In order to study the behaviour of the columns, the finite element software LUSAS is used to conduct the non-linear analyses. Results from the non-linear finite element analysis and the corresponding experimental test are compared which reveal the reasonable accuracy of the three-dimensional finite element modelling. A special arrangement of bar stiffeners in the columns with various number, spacing and diameters of the bar stiffeners are developed and studied using the non-linear finite element method. Effects of various variables such as different number and spacing of the bar stiffeners and also steel wall thicknesses on the ultimate axial load capacity and ductility of the columns are examined. Moreover, effects of different diameters of the bar stiffeners, concrete compressive strengths and steel yield stresses on the ultimate axial load capacity of the columns are evaluated. It is concluded from the study that the variables significantly influence the behaviour of the columns. The obtained results from the finite element analyses are compared with those predicted values by the design code EC4 and suggested equations of the previous researches.
机译：本文涉及带钢筋的钢管混凝土短柱的研究。为了研究圆柱的行为，使用有限元软件LUSAS进行非线性分析。比较了非线性有限元分析的结果和相应的实验测试，这些结果揭示了三维有限元建模的合理准确性。使用非线性有限元方法，开发并研究了具有不同数量，间距和直径的钢筋的柱中钢筋的特殊布置。研究了各种变量（例如，钢筋的数量和间距以及钢壁厚度的不同）对柱的极限轴向承载能力和延性的影响。此外，还评估了不同直径的钢筋的强度，混凝土的抗压强度和钢的屈服应力对柱的最终轴向承载能力的影响。从研究得出的结论是，变量显着影响了色谱柱的性能。有限元分析获得的结果与设计代码EC4和先前研究的建议方程式的预测值进行了比较。

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