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Table 4 Comparative evaluation of progressive damage and seismic performance level for Case-1D, Case-2D and Case-3D.

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

Input Acceleration Case-1D Case-2D Case-3D
Damage index Seismic performance level Damage index Seismic performance level Damage index Seismic performance level
1 × 0.154 g 0.14 Delayed operational 0.18 Delayed operational 0.19 Delayed operational
2 × 0.154 g 0.26 Delayed operational 0.33 Delayed operational 0.34 Delayed operational
3 × 0.154 g 0.45 Stability 0.57 Stability 0.50 Stability
4 × 0.154 g 0.57 Stability 0.65 Stability 0.67 Stability
5 × 0.154 g 0.83 0.94 1.00
6 × 0.154 g 1.00 1.00 1.00
  1. Case-1D, Case-2D, Case-3D: longitudinal reinforcement ratio & transverse reinforcement ratio—64% of Case-1, Case-2, Case-3.