To investigate the hysteretic behaviour of an eccentrically loaded partially-concrete-filled steel tubular (PCFST) bridge pier in an out-of-plane horizontal direction, a quasi-static experiment and finite element (FE) analysis of steel tubular columns were carried out. In this study, four PCFST column specimens were tested under constant eccentrically loaded and out-of-plane horizontal cyclic loading. The elasto-plastic behaviour and failure mode of these specimens were investigated. Secondly, the FE models of these four experimental PCFST columns were established, through comparisons with the experimental results, the validity of the selected elements, mesh division, the contact relationship between the concrete and the steel pipe, and the boundary conditions of FE models were verified. Thirdly, 30 FE models of PCFST bridge piers were analyzed to ascertain the effects of slenderness ratio λ, radius-thickness ratio Rt, and vertical load eccentricity ratio e/L on ultimate strength and ductility. Finally, an empirical formula was proposed to describe the ultimate strength and ductility of such bridge piers for engineering application under complicated loading conditions.

为了研究偏心加载的钢管混凝土（PCFST）桥墩在平面外水平方向上的滞后行为，进行了钢管混凝土柱的准静态试验和有限元（FE）分析。在这项研究中，对四个PCFST柱标本在恒定的偏心载荷和平面外水平循环载荷下进行了测试。研究了这些样品的弹塑性行为和破坏模式。其次，通过与实验结果的比较，建立了这四个实验PCFST柱的有限元模型，选择了单元的有效性，网格划分，混凝土与钢管之间的接触关系以及有限元模型的边界条件。已验证。第三，关于极限强度和延展性的e / L。最后，提出了一个经验公式来描述这种桥墩在复杂荷载条件下的工程应用的极限强度和延性。