Behaviour of concrete-filled hollow structural steel (HSS) columns with pre-load on the steel tubes

Experimental behaviour of recycled aggregate concrete filled steel tubular columns

“…13, where n is given by N/N ue , and x represents the position of longitudinal strain gauges at the mid-height section of the specimens. This indicates that, generally, the assumption of "cross-sections remain plane" adopted in the theoretical model of this paper and the literature (Han and Yao [11]; Han et al [14]) is reasonable.…”

“…6 using dashed lines. This indicates the validity of the assumption of 'the deflection curve of the member is a half sine wave', which is adopted in the theoretical model of this paper and the literature (Han and Yao [11]; Han et al [14]). …”

“…However, EC4 gives a member capacity about 12% higher than these 0.039, and is the best predictor to predict the ultimate strength of square HSS columns filled with recycled aggregate concrete. For comparison purposes, the load versus lateral deflection curves at mid-height (plotted as dashed lines) predicted using a mechanics model, which has been described in detail by Han and Yao [11] and Han et al [14] for normal CFST columns, are compared with the test results of RACFST columns obtained in current tests in Figs. 9 and 10.…”

Tests and calculations for hollow structural steel (HSS) stub columns filled with self-consolidating concrete (SCC)

“…(3) Residual stress distributions for a steel plate of a column shown as in Fig. 11 is used in the analysis [11]. (4) An effective width model for square sections, illustrated in Fig.…”

Experimental behaviour of stiffened concrete-filled thin-walled hollow steel structural (HSS) stub columns

“…Both theoretical and experimental studies have been carried out, such as Tao et al [9], Han et al [10], Han [11], Han and Yang [12], Han et al [13], Han [1], Han and Yao [14,15], Han et al [16,17], Tao et al [18]. The research results reported in this paper are part of a wider study on concrete-filled thin-walled HSS columns.…”