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

From: Seismic Performance Assessment of Deteriorated Two-Span Reinforced Concrete Bridges

Input Acceleration Case-1 Case-2 Case-3
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
  1. 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.