In this paper, the results of experimental tests conducted on concrete-filled steel tubular (CFST) columns are presented. There is currently a deficit of data available that can be used to evaluate current guidance documents and provide assessment to improve their accuracy when considering the behaviour of CFST columns filled with high strength concrete. Thus, this paper aims to increase the volume of experimental data available with a series of groups of tests on stub CFST columns subject to axial compression. Among the specimens of the same group only one dimension changes, the steel tube thickness. The columns are filled with both normal and high strength concrete for comparison purposes. The use of high strength concrete in circular tubes increases the concrete contribution, but this effect does not fulfil in rectangular specimens where also the confinement is less effective than in circular CFST even when the former have thin steel tubes and high strength concrete. The specifications of four commonly used codes are discussed. Comparison of their predictions with the experimental data collected shows that AISC is conservative but EC4, DBJ and AS produce similar non-conservative predictions.

本文介绍了在钢管混凝土（CFST）柱上进行的实验测试结果。当前，在考虑填充高强度混凝土的CFST柱的性能时，可用于评估当前指导文件并提供评估以提高其准确性的数据不足。因此，本文旨在通过对经受轴向压缩的CFST短柱进行一系列测试，以增加可用的实验数据量。在同一组样本中，钢管厚度仅发生一维变化。为了进行比较，这些柱填充了普通强度混凝土和高强度混凝土。在圆管中使用高强度混凝土会增加混凝土的贡献，但是这种效果在矩形试样中无法实现，在矩形试样中，即使圆形钢管混凝土具有薄钢管和高强度混凝土，其约束也没有圆形CFST有效。讨论了四个常用代码的规范。他们的预测与收集的实验数据的比较表明，AISC是保守的，但EC4，DBJ和AS产生相似的非保守预测。