Abstract
Concrete-filled stainless steel tubes (CFSST) can be considered as a new and innovative kind of composite construction technique, and have the potential to be used extensively in civil engineering. This paper employs a nonlinear analysis of square CFSST stub columns under axial compression. A three-dimensional nonlinear finite element (FE) model is developed using ABAQUS, where nonlinear material behaviour, enhanced strength corner properties of steel, and initial geometric imperfections are included. Close agreement is achieved between the test and FE results in terms of load-deformation response and ultimate strength. In light of the numerical results, the behaviour of stainless steel composite columns is compared with that of carbon steel composite columns. A simple model is proposed to calculate the ultimate strength of square CFSST stub columns.
| Original language | English |
|---|---|
| Pages (from-to) | 1719-1732 |
| Number of pages | 14 |
| Journal | Journal of Constructional Steel Research |
| Volume | 67 |
| Issue number | 11 |
| DOIs | |
| Publication status | Published - 2011 |
Keywords
- axial loads
- columns
- concrete-filled tubes
- finite element method
- nonlinear analysis
- stainless steel
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