Finite element analysis of large diameter high strength octagonal CFST short columns

Abstract

Octagonal masonry columns have been broadly used in outstanding architectural heritage due to their aesthetical appearance and to support high loads. Nowadays, concrete-filled steel tubular (CFST) columns have been utilised to carry such high load. However, a recent trend in the construction of the CFST columns is to use the high strength concrete (HSC) to increase the usable floor spaces in different buildings due to the global limited land areas. Therefore, this paper combines the architectural demand of the octagonal column shape with the advantages of the CFST columns by investigating numerically, by means of finite element (FE) modelling, the octagonal CFST short columns. Accordingly, v..