Experimental Investigation and Load Capacity of Slender Cold-Formed Lipped Channel Sections with Holes in Compression

Table 4

Comparison of ultimate strength between the FEA results and the predicted results by using the modified method for columns with circular holes.

Specimen	L (mm)	h (mm)	b (mm)	a (mm)	t (mm)	fy (MPa)	S (mm)	Hole number	d (mm)	Pa (kN)	Pc (kN)	Pc/Pa
C8910-CH3-6	3000	89	40	13	1	280	500	6	26.7	9.30	9.13	0.98
C8910-CH3-3	1500	89	40	13	1	280	500	3	26.7	21.31	23.27	1.09
C8910-CH3-1	600	89	40	13	1	280		1	26.7	31.87	30.58	0.96
C8910-CH7-6	3000	89	40	13	1	280	500	6	62.3	7.94	7.94	1.00
C8910-CH7-3	1500	89	40	13	1	280	500	3	62.3	17.58	16.17	0.92
C8910-CH7-1	600	89	40	13	1	280		1	62.3	20.96	18.75	0.90
C7012-CH3-6	3000	70	35	11	1.2	350	500	6	21	7.71	7.11	0.92
C7012-CH3-3	1500	70	35	11	1.2	350	500	3	21	27.03	24.35	0.90
C7012-CH3-1	600	70	35	11	1.2	350		1	21	44.00	43.48	0.99
C7012-CH7-6	3000	70	35	11	1.2	350	500	6	49	6.74	6.90	1.02
C7012-CH7-3	1500	70	35	11	1.2	350	500	3	49	20.02	18.07	0.90
C7012-CH7-1	600	70	35	11	1.2	350		1	49	27.36	24.75	0.91
C10010-CH3-6	3000	100	50	12	1	550	500	6	30	13.80	13.37	0.97
C10010-CH3-3	1500	100	50	12	1	550	500	3	30	36.68	34.59	0.94
C10010-CH3-1	600	100	50	12	1	550		1	30	46.40	42.83	0.92
C10010-CH7-6	3000	100	50	12	1	550	500	6	70	12.73	12.97	1.02
C10010-CH7-3	1500	100	50	12	1	550	500	3	70	30.48	28.23	0.93
C10010-CH7-1	600	100	50	12	1	550		1	70	32.85	29.88	0.91
Average												0.954
Standard deviation												0.054
Coefficient of variation												0.057