Abstract Diagonal binding ribs, made of thin-walled steel plates with circular openings and welded to the steel tube of a square concrete-filled steel tubular (CFST) column, can improve the composite effect effectively by co-carrying axial compressive forces and confining the steel tube and concrete. The column with diagonal ribs is referred to as diagonal ribs stiffened CFST column. This paper summarizes the test results of axially loaded diagonal ribs stiffened and longitudinal ribs stiffened CFST columns comprehensively, followed by further tests of stub columns with longitudinal reinforcing bars. A verified finite element analysis (FEA) model was presented to implement parametric studies. The studied parameters included diagonal rib detailing (i.e., opening diameter, opening spacing, and welding position) and material strengths. Finally, based on the test and analysis results, design considerations, involving width-to-thickness ratio limits of tube plates, diagonal rib detailing, thickness matching relationship between diagonal ribs and the steel tube, detailing of composite column with diagonal ribs, and load-carrying capacity prediction, were proposed.

中文翻译：

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斜肋受力方钢管混凝土柱的分析与设计

摘要 圆孔薄壁钢板焊接在方形钢管混凝土（CFST）柱的钢管上的斜约束肋通过共同承受轴向压力和限制梁的受力，可以有效提高复合效果。钢管和混凝土。带有斜肋的柱称为斜肋加劲CFST柱。本文综合总结了轴向受力斜肋加筋和纵肋加筋CFST柱的试验结果，并进一步对带有纵向钢筋的短柱进行了试验。提出了经过验证的有限元分析 (FEA) 模型以实施参​​数化研究。研究的参数包括对角肋细节（即开口直径、开口间距和焊接位置）和材料强度。最后，