A Comparative Test Study on the Seismic Damage Sustained by Frame-Core Tube Structures

Table 14

Damage index range at different damage levels.

Damage level	Basic integrity	Slight damage	Moderate damage	Serious damage	Collapse
F	≤0.1	0.1∼0.2	0.2∼0.5	0.5∼0.75	≥0.75