内置T型钢骨-T形钢管混凝土短柱的有限元分析

Finite element analysis of T-shaped CFST short columns with inner T-shaped steel

为了进一步的研究内置T型钢骨-T形钢管混凝土短柱轴压力学性能,在试验研究的基础上,使用有限元软件ABAQUS建立相应的模型进行对比分析,研究了钢管屈服强度、钢骨屈服强度和混凝土强度对内置T型钢骨-T形钢管混凝土短柱极限承载力的影响。结果表明:有限元模拟的结果与试验得到的破坏模式基本一致,试件的承载力与钢管纵相应变曲线也相吻合;钢管屈服强度、钢骨屈服强度和混凝土强度的提高对试件极限承载能力均有所提高,钢管屈服强度影响较大。

In order to further study the mechanical properties of T-shaped CFST short columns with inner T-shaped steel under axial compression,on the basis of experimental research,the finite element software ABAQUS was used to establish the corresponding model for comparative analysis.The effects of steel tube yield strength,steel yield strength and concrete strength on the ultimate bearing capacity of T-shaped steel reinforced concrete filled steel tube short columns were studied.The results show that the finite element simulation results are basically consistent with the failure mode obtained by the test,and the bearing capacity of the specimen is also consistent with the corresponding curve of the steel tube.The increase of yield strength of steel tube,yield strength of steel and concrete strength can improve the ultimate bearing capacity of the specimen,and the yield strength of steel tube has a great influence.