Experimental behavior of circular steel tubular columns filled with self-compacting concrete under concentric load

Abstract EN

This paper presents an experimental study on the behavior of circular, concrete filled, steel tube (CFT) columns concentrically loaded in compression to failure.

Self-compacting concrete (SCC) is used here as a filler in order to increase homogeneity of the core and reduce segregation problems.

Total six column specimens with different lengths (0.4 m–1.5 m) of constant diameter of 160 mm and wall thickness of 2.8 mm were tested.

The purpose here is to investigate the ultimate capacity and the deformation behavior of different slenderness ratio columns.

The behavior of these columns in confinement was discussed.

Experimental results indicate that the compression force capacity is affected by slenderness ratio of the column.

For slender column the overall buckling was observed while for the short columns the crushing and the local buckling is the dominant failure shape.