方钢管混凝土双向偏压构件有限元分析

在实际工程中，方钢管混凝土柱有可能成为双向偏压构件。利用有限元软件ABAQUS建模对方钢管混凝土双向偏压构件的荷栽．变形全过程进行了计算，计算结果与试验结果符合良好。在此基础上，结合钢管和混凝土的应力分布云图对方钢管混凝土双向偏压构件的荷载．变形全过程进行了分析，这对深入研究该类构件的工作机理有重要意义。最后，分析了各种参数：混凝土强度、钢材强度和厚度、长细比、偏心角和偏心距对构件荷载．变形关系曲线的影响。

Finite Element Analysis of Concrete-filled SHS Steel Tubular Members Subjected to Biaxial Eccentric Compression

In practical project, concrete-filled square hollow section （SHS） steel members are sometimes subjected to biaxial eccentric compression. In this paper, load-deformation relationship curves of concrete-filled square hollow section （SHS） steel members subjected to biaxial eccentric compression are calculated by finite element software - ABAQUS. The calculating results are in good agreement with test results. On this basis, stress distributions of steel and concrete and load-deformation relationship are analyzed, which is significant for the research of mechanism of the members. Finally, some parameters are analyzed including concrete strength, steel yield strength, thickness of steel tube, slenderness ratio, loading angle and loading distance which will have a great influence on load-deformation relationship curves.