Analytical behaviour of tapered CFDST stub columns under axially partial compression

作者：Zhang, Yong-Bo; Han, Lin-Hai^*; Li, Wei

来源：Journal of Constructional Steel Research, 2017, 139: 302-314.

DOI：10.1016/j.jcsr.2017.09.023

• Concrete-filled double skin steel tubes (CFDST)
• Tapered column
• Axially partial compression
• Finite element analysis (FEA)
• Full-range analysis
• Ultimate strength

This paper conducts a numerical investigation on the behaviour of tapered concrete-filled double skin steel tubular (CFDST) stub columns subjected to axially partial compression. A finite element analysis (FEA) model is developed to investigate the partial compressive behaviour of the CFDST column. The full-range load versus deformation relations of tapered CFDST columns under partial and overall compression are both analyzed using the verified FEA model. A parametric study is then conducted to investigate the ultimate strength of the column with various geometric and material parameters. Finally, a simplified model is proposed based on the parametric analysis, which could predict the ultimate strength under partial compression with generally good accuracy.

• 出版日期2017-12
• 单位清华大学