中文摘要：

该文进行了内置CFRP圆管的方钢管高强混凝土结构的轴压短柱、轴压中长柱、轴压长柱、纯弯构件、单向偏压短柱、单向偏压中长柱、双向偏压短柱、双向偏压中长柱的试验研究和有限元模拟，分析了内置CFRP圆管的方钢管高强混凝土结构各类基本构件的受力全过程以及破坏模式，并提出了用于计算该结构各类基本构件的承载力以及变形的计算公式。在试验研究和数值模拟的基础上，将此种新型组合结构构件的力学性能与方钢管混凝土构件的力学性能进行了比较分析。

英文摘要：

Plentiful experiment researches and the finite element analysis are performed on short and slender columns under axial compression beams, short columns and slender columns under eccentric compression, short columns and slender columns of high-strength concrete filled square steel tube with inner CFRP circular tube under bi-axial eccentric compression. The failure mode and the mechanism of all kinds of members in an entire process are analyzed. And a simplified formula calculating the bearing capacity for each member is proposed. On the basis of above, the comparison between this new composite structure and a traditional concrete filled square steel tubular structure is done.