Abstract
This paper presents an investigation on axially loaded polygonal-shaped steel-tube columns filled with high-strength concrete. The tubes had triangular, hexagonal and octagonal cross-sections, the concrete had a nominal concrete compressive cylinder strength of 100 MPa and the steel had a nominal yield strength of 285 MPa. For each tube cross-section, two identical specimens of concrete-filled tubes and one specimen of a hollow tube were examined. Load shortening, strain histories and failure modes were recorded and compared. Finite-element analysis with three different existing constitutive models of concrete were also developed and validated against the experimental results. The load-carrying capacities of the concrete-filled tubes were compared with the derived values from BS EN 1994-1-1:2004, ACI 318-11/AISC 360-16 and GB 50936-2014. The feasibility of current design standards for concrete-filled steel-tube columns of different cross-sections is discussed.
| Original language | English |
|---|---|
| Pages (from-to) | 96-112 |
| Number of pages | 17 |
| Journal | Proceedings of the Institution of Civil Engineers: Structures and Buildings |
| Volume | 171 |
| Issue number | 2 |
| DOIs | |
| Publication status | Published - 1 Feb 2018 |
Keywords
- Buildings
- Columns
- Composite structures
- Structures and design
ASJC Scopus subject areas
- Civil and Structural Engineering
- Building and Construction