Research Article
Structural Redundancy Assessment of Adjacent Precast Concrete Box-Beam Bridges in Service
Table 3
System reserve ratio,
, of the superstructure with different crack lengths of the shear key #9.
| | Crack length of shear key #9 | Ghosn’s approach | Proposed approach |
| | 0 (intact) | 1.10 | 1.04 | | 1L/16 | 1.01 | 1.04 | | 3L/16 | 1.01 | 1.03 | | 5L/16 | 1.00 | 1.02 | | 7L/16 | 1.00 | 1.01 | | 9L/16 | 0.99 | 1.01 | | 11L/16 | 0.90 | 0.93 | | 13L/16 | 0.87 | 0.87 | | 15L/16 | 0.79 | 0.81 |
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