Circular concrete-filled double steel tubular (CFDST) column is a high-performance composite column that has significant potential to be used in the construction of high-rise composite structures. This paper presents experimental and strength computational investigations on CFDST short columns that are subjected to eccentric compression load. A total of sixteen CFDST stub columns, two concrete-filled steel tubular (CFST) columns, and two double-skin concrete-filled steel tubular (DCFST) columns were tested to investigate their structural performance. The test behavior of the CFDST column loaded eccentrically is discussed and compared against its CFST and DCFST counterparts. The test results show that the CFDST column has improved strength and ductility under eccentric loading when compared with other composite columns. The strengths of the CFDST stub columns in this study together with the test strengths from the literature were used to assess the strength predictions by Eurocode 4 and AISC 360–16. It was found that the current predictions generally underestimate or overestimate the strengths. A new reduction factor for predicting the ultimate strengths of CFDST short columns under eccentric compression is proposed based on the test results. By adopting the newly proposed reduction factor and design method, the design predictions are found to be improved that provide reasonable estimations for circular CFDST columns loaded eccentrically.

圆形钢管混凝土（CFDST）柱是一种高性能的复合柱，在高层复合结构的建造中具有巨大的应用潜力。本文介绍了对承受偏心压缩载荷的 CFDST 短柱的实验和强度计算研究。总共测试了 16 根 CFDST 短柱、两根钢管混凝土 (CFST) 柱和两根双层钢管混凝土 (DCFST) 柱，以研究它们的结构性能。讨论了偏心加载的 CFDST 柱的测试行为，并将其与其 CFST 和 DCFST 对应物进行了比较。试验结果表明，与其他复合柱相比，CFDST柱在偏心荷载作用下具有更高的强度和延性。本研究中 CFDST 短柱的强度与文献中的测试强度一起用于评估 Eurocode 4 和 AISC 360-16 的强度预测。结果发现，目前的预测普遍低估或高估了优势。根据试验结果提出了一种新的折减系数，用于预测偏心受压下CFDST短柱的极限强度。通过采用新提出的折减系数和设计方法，发现改进了设计预测，为偏心加载的圆形 CFDST 柱提供了合理的估计。发现目前的预测普遍低估或高估了优势。根据试验结果提出了一种新的折减系数，用于预测偏心受压下CFDST短柱的极限强度。通过采用新提出的折减系数和设计方法，发现改进了设计预测，为偏心加载的圆形 CFDST 柱提供了合理的估计。发现目前的预测普遍低估或高估了优势。根据试验结果提出了一种新的折减系数，用于预测偏心受压下CFDST短柱的极限强度。通过采用新提出的折减系数和设计方法，发现改进了设计预测，为偏心加载的圆形 CFDST 柱提供了合理的估计。