尝试研究受轴压荷载的异形钢管混凝土(CFST)短柱的性能,如三角形、扇形、D形、1/4圆形和半圆形。对总共44个试件进行试验,其中包括钢管混凝土短柱和作为参考的中空钢管混凝土短柱。研究改变钢管壁厚度和内填混凝土对组合柱性能的影响。结果显示,所测试的异形钢管混凝土短柱表现了良好的韧性,组合柱的中部发生了外部局部屈曲。一般来讲,这5种异形试验样本的失效模式与方形钢管混凝土短柱相似。最后,提出一个可以预测异形钢管混凝土横截面强度的简化模型。 Attempt to investigate the properties of CFST columns subjected to axial load such as triangular, fan, D, 1/4 and semicircular. A total of 44 specimens were tested, including CFST stubs and hollow CFST stubs as reference. The effect of changing the thickness of steel pipe wall and the filling concrete on the performance of composite column was studied. The results show that the deformed concrete-filled CFST stub columns exhibit good ductility and local buckling in the middle of the composite column. In general, the failure modes of the five profiled test specimens are similar to those of square CFST. Finally, a simplified model that can predict the cross-section strength of CFR concrete is proposed.