Axial Compression Behavior of Circular Concrete-Filled High-Strength Thin-Walled Steel Tubular Columns with Out-of-Code D/t Ratios

Table 1

Details of the CFHTST columns.

Specimen	D (mm)	D/t	fcu (MPa)	fy (MPa)	Nnom (kN)	Nu (kN)	NFE (kN)	Nu/Nnom	NFE/Nu
CFST-140-1	140	70	50.3	741	1228	1589	1582	1.294	0.996
CFST-140-2	140	70	50.3	741	1228	1550	1582	1.262	1.021
CFST-140-3	140	70	50.3	741	1228	1555	1582	1.266	1.017
CFST-180-1	180	90	53.4	741	1885	2284	2409	1.212	1.055
CFST-180-2	180	90	53.4	741	1885	2405	2409	1.276	1.001
CFST-180-3	180	90	50.3	741	1809	2301	2342	1.272	1.018
CFST-220-1	220	110	53.4	741	2605	3227	3140	1.239	0.973
CFST-220-2	220	110	53.4	741	2605	3072	3140	1.179	1.022
CFST-220-3	220	110	50.3	741	2491	2990	3034	1.200	1.015
CFST-260-1	260	130	53.4	741	3435	4120	4104	1.199	0.996
CFST-260-2	260	130	53.4	741	3435	4302	4104	1.252	0.954
CFST-260-3	260	130	53.4	741	3435	4198	4104	1.222	0.978
							MV	1.240	1.004
							SD	0.036	0.027