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

Table 7

Damage states and quantitative index.

Damage states	Basically intact	Slight damage	Moderate damage	Severe damage	Collapse
Quantitative index	≤LS1	LS1∼LS2	LS2∼LS3	LS3∼LS4	≥LS4