Numerical Investigation on Load-carrying Capacity of High-strength Concrete-encased Steel Angle Columns

International Journal of Concrete Structures and Materials

Table 3 Comparison of numerical analysis results with previous test results (Kim et al. 2014, 2017; Eom et al. 2014; Hwang et al. 2016).

Specimens	Maximum load, \( P \) (kN) for E1–E4 and C1–C5 or \( M_{m} \) (kN-m) for F1–F7			Secant stiffness at maximum load, \( P /\varepsilon_{c} \) (kN) for E1–E4 and C1–C5 or \( M_{m} /\kappa_{m} \) (kN-m²) for F1–F7
Specimens	T^a	A^a	A/T	T^a	A^a	A/T
E1	3343	3587	1.07	637700	491312	0.77
E2	3614	3328	0.92	449287	416056	0.93
E3	3472	3344	0.96	462683	405290	0.88
E4	3598	3366	0.94	371730	420757	1.13
C1	8081	8101	1.00	2711782	4050492	1.49
C2	7684	8267	1.08	2677178	2755614	1.03
C3	6722	7581	1.13	3280720	3790417	1.16
C4	5842	5941	1.02	1794820	1980334	1.10
C5	5680	5405	0.95	1897557	2702699	1.42
F1	572	572	1.00	11838	20637	1.74
F2	497	498	1.00	12697	7866	0.62
F3	412	487	1.18	31588	12820	0.41
F4	394	486	1.23	8649	13098	1.51
F5	377	338	0.90	6816	6014	0.88
F6	345	326	0.95	8133	9904	1.22
F7	351	325	0.92	8718	9911	1.14
Accuracy	Mean and standard deviation of A/T = 1.02 and 0.10			Mean and standard deviation of A/T = 1.09 and 0.35

^aT and A indicate the test and analysis results evaluated at the mid-height section.