Fragility-Based Improvement of System Seismic Performance for Long-Span Suspension Bridges

Table 6

Damage states of the quasi-isolation and isolation bearings (m).

		DS1	DS2	DS3	DS4
Criteria		Initial slipping or dissipation, 75% ESS	Possible pounding; entering of abutments nonlinearity or shear key degradation	Complete damage of the bearings, 300% (250%) ESS	Possible unseating
Quasi-isolation	ABD@C/T	0.071	0.162	0.285	0.57
	ABD@A/L	0.053	0.095	0.213	0.75
Isolation	ABD@C/T	0.105	0.162	0.35	0.57
	ABD@A/L	0.079	0.095	0.263	0.85