Artificial Neural Network-Based Method for Seismic Analysis of Concrete-Filled Steel Tube Arch Bridges

Table 4

Damage index range of bridge structure under different damage degrees.

Damage level	Damage index range
No damage state	0.00∼0.10
Slight damage state	0.10∼0.30
Moderate damage state	0.30∼0.50
Extensive damage state	0.50∼0.70
Collapse damage state	0.70∼1.00