Damage Assessment of an SRC Frame-Core Tube Structure under the Action of a Main Aftershock Sequence

Table 3

The first 6-order period of the structure.

Various software	Orders
	1	2	3	4	5	6
Yingjianke	1.40	1.40	1.10	0.41	0.40	0.40
Perform-3d	1.41	1.41	1.12	0.41	0.41	0.40