Seismic Performance Assessment of Deteriorated Two-Span Reinforced Concrete Bridges

International Journal of Concrete Structures and Materials

Table 3 Comparative evaluation of progressive damage and seismic performance level for Case-1, Case-2 and Case-3.

Input Acceleration	Case-1		Case-2		Case-3
Input Acceleration	Damage index	Seismic performance level	Damage index	Seismic performance level	Damage index	Seismic performance level
1 × 0.154 g	0.10	Fully operational	0.14	Delayed operational	0.15	Delayed operational
2 × 0.154 g	0.26	Delayed operational	0.33	Delayed operational	0.26	Delayed operational
3 × 0.154 g	0.34	Delayed operational	0.44	Stability	0.44	Stability
4 × 0.154 g	0.48	Stability	0.64	Stability	0.55	Stability
5 × 0.154 g	0.61	Stability	0.74	Stability	0.74	Stability
6 × 0.154 g	0.90	–	1.00	–	1.00	–

Case-1: longitudinal reinforcement ratio 1.61, transverse reinforcement ratio 0.6; Case-2: longitudinal reinforcement ratio 1.61, transverse reinforcement ratio 0.4; Case-3: longitudinal reinforcement ratio 0.81, transverse reinforcement ratio 0.6.