Seismic Damage Analysis of Large-Span Tied-Arch Bridge with Concrete-Filled Steel Tubes Subjected to Near-Fault Ground Motion

Table 4

Damage index range of bridge structure under different damage degrees.

Damage degree	Damage index range
Basic intact	0.00~0.20
Slightly damage	0.20~0.30
Moderate damage	0.30~0.50
Serious damage	0.50~0.70
Collapse	0.70~1.00