中文摘要：

利用有限元分析软件ABAQUS对带端板圆锥形中空夹层钢管混凝土短柱局压力学性能进行有限元分析和相应的试验研究,所得的荷载-位移全过程曲线及短柱破坏形态吻合较好。在此基础上对其受力全过程中上端板、内外钢管及混凝土应力分布情况进行了分析,同时给出了内外钢管与夹层混凝土之间的相互作用,并对锥度、材料强度、空心率、局压面积比、端板刚度等参数对局压时短柱极限承载力及荷载-位移曲线的影响进行了比较。

英文摘要：

A finite element analysis （FEA） model for conical concrete-filled double-skin steel tubular stub columns with endplate under axial partial compression was developed and the corresponding tests were conducted. The predicted load versus deformation relationship curves and failure modes were in good agreement with the measured results. The FEA model was then used to investigate the mechanisms of such composite columns further. The stress distribution of each component and the interactions between the concrete and the double-skin steel tubes were analyzed. And then, the main parameters influencing on the load-deformation relationship curves such as taper, strength of the materials,hollow ratio, axial partial compression ratio and rigidity of endplate were investigated.