Strength Calculation of Short Concrete-filled Steel Tube Columns

International Journal of Concrete Structures and Materials

Table 2 Results of comparison of theoretical and empirical loads to failure.

No	Specimen ID	d, mm	δ, mm	f_yp, MPa	f_c, MPa	N ^Exp_u , kN	N ^Th_u , kN	N ^Exp_u /N ^Th_u
1	CC4-A-2	149	2.96	308	21.6	941	930	0.99
2	CC4-A-4-1	149	2.96	308	35.6	1064	1165	0.91
3	CC4-A-4-2	149	2.96	308	35.6	1080	1165	0.93
4	CC4-A-8	149	2.96	308	69.3	1781	1630	1.09
5	CC4-C-2	301	2.96	279	21.6	2382	2645	0.90
6	CC4-C-4-1	300	2.96	279	36.1	3277	3511	0.93
7	CC4-C-4-2	300	2.96	279	36.1	3152	3511	0.90
8	CC4-C-8	301	2.96	279	72.3	5540	5573	0.99
9	CC4-D-2	450	2.96	279	21.6	4415	5010	0.88
10	CC4-D-4-1	450	2.96	279	36.1	6870	6964	0.99
11	CC4-D-4-2	450	2.96	279	36.1	6985	6964	1.00
12	CC4-D-8	450	2.96	279	76.6	11,665	11691	0.99
13	CC6-A-2	122	4.54	576	21.6	1509	1211	1.24
14	CC6-A-4-1	122	4.54	576	35.6	1657	1450	1.14
15	CC6-A-4-2	122	4.54	576	35.6	1663	1450	1.15
16	CC6-A-8	122	4.54	576	69.3	2100	1890	1.11
17	CC6-C-2	239	4.54	507	21.6	3035	3026	1.00
18	CC6-C-4-1	238	4.54	507	35.6	3583	3818	0.94
19	CC6-C-4-2	238	4.54	507	35.6	3647	3818	0.95
20	CC6-C-8	238	4.54	507	69.3	5578	5210	1.07
21	CC6-D-2	361	4.54	525	21.6	5633	5700	0.99
22	CC6-D-4-1	361	4.54	525	36.1	7260	7300	0.99
23	CC6-D-4-2	360	4.54	525	36.1	7045	7300	0.99
24	CC6-D-8	360	4.54	525	76.6	11,505	10,812	1.06
25	CC8-A-2	108	6.47	853	21.6	2275	2131	1.07
26	CC8-A-4-1	109	6.47	853	35.6	2446	2254	1.09
27	CC8-A-4-2	108	6.47	853	35.6	2402	2250	1.07
28	CC8-A-8	108	6.47	853	69.3	2713	2618	1.04
29	CC8-C-2	222	6.47	843	21.6	4964	4389	1.02
30	CC8-C-4-1	222	6.47	843	35.6	5638	5207	1.08
31	CC8-C-4-2	222	6.47	843	35.6	5714	5207	1.10
32	CC8-C-8	222	6.47	843	69.3	7304	7346	0.99
33	CC8-D-2	337	6.47	823	21.6	8475	7765	1.09
34	CC8-D-4-1	337	6.47	823	36.1	9668	9929	0.97
35	CC8-D-4-2	337	6.47	823	36.1	9835	9929	0.99
36	CC8-D-8	337	6.47	823	76.6	13,776	13,971	0.99
Max		450	6.47	853	85.1	13,776	13,971	1.24
Min		108	2.96	279	25.4	941	930	0.88
V _b								0.085