Mechanical Behavior of Damaged H-Section Steel Structure

Table 5

Deformation calculations of steel columns.

Load	P = 150 kN, p = 0.19					P = 260 kN, p = 0.34
Piecewise point	0	1	2	3	4	0	1	2	3	4
Initial moment M1	0.43	0.43	0.43	0.43	0.43	0.75	0.75	0.75	0.75	0.75
Initial imperfection	0	0.0072	0.0144	0.0235	0.0325	0	0.0072	0.0144	0.0235	0.0325
Assuming additional deflection	0	0.000687	0.00248	0.00528	0.00897	0	0.002	0.0068	0.0137	0.0224
Moment of P-δ	0.00802	0.00649	0.00475	0.00245	0	0.0187	0.0155	0.0115	0.006	0
Changing common factor	0.179	0.145	0.106	0.0547	0	0.416	0.346	0.256	0.134	0
Total moment Mk	0.610	0.576	0.537	0.486	0.431	1.166	1.096	1.006	0.884	0.75
M-Φ-P relationship Φk	0.665	0.611	0.553	0.496	0.431	2.055	1.512	1.178	0.960	0.755
Rk	0.379	0.610	0.553	0.495	0.262	1.108	1.530	1.188	0.961	0.475
θk	0.379	0.989	1.543	2.038	1.108	2.638	3.826	4.787
	0	0.379	1.368	2.911	4.949	0	1.108	3.746	7.572	12.359
Calculating additional deflection	0	0.00069	0.00248	0.00528	0.00897	0	0.002	0.00678	0.0137	0.0224