Structural Damage Identification Based on l₁Regularization and Bare Bones Particle Swarm Optimization with Double Jump Strategy

Table 3

Damage cases of steel frame structure.

Story	Undamaged		Damage case 1		Damage case 2		Damage case 3		Damage case 4
	Cutting width	Damage (%)	Cutting width	Damage (%)	Cutting width	Damage (%)	Cutting width	Damage (%)	Cutting width	Damage (%)
1^st	0	0	23.7 mm	11.6	37.54 mm	21.1	37.54 mm	21.1	37.54 mm	21.1
2^nd	0	0	0	0	0	0	23.7 mm	11.6	37.54 mm	21.1
3^rd	0	0	0	0	0	0	0	0	0	0