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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.