Numerical Study on the axial compression performance of concrete-filled steel tubular hybrid columns

International Conference on Manufacturing Technology, Materials and Chemical Engineering

机械制造;材料科学;化学工业

Zheng, Lianqiong^1,2 ; Yang, Hang^1

College of Civil Engineering, Fujian University of Technology, Fuzhou

350118, China^1

Fujian Provincial Key Laboratory of Advanced Technology and Informatization in Civil Engineering, Fuzhou

350118, China^2

关键词: Compression performance;    Concrete filled steel tubular columns;    Concrete-filled steel tubular;    Hybrid columns;    Peak load;    Properties of concretes;    Research results;    Steel tube;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/392/2/022032/pdf
DOI  :  10.1088/1757-899X/392/2/022032

学科分类：材料科学（综合）

来源: IOP

【 摘 要 】

The mechanical properties of concrete filled steel tubular (CFST) hybrid columns subjected to axial compression were simulated by finite element method and compared with the experimental results. The calculated results are in good agreement with the experimental results. The variation of the cross-section strain along the cross section height is given before the peak load is reached, which is in accordance with the assumption of the flat section. On the basis of this, the thickness of the steel tube and the thickness of the reinforce concrete (RC) connecting plate are analysed. The research results show that the peak load is mainly determined by the bearing capacity of the RC connecting plate, and the concrete filled steel tubular column has better ductility after reaching the peak load.