Research Article
Performance Deterioration of Heavy-Haul Railway Bridges under Fatigue Loading Monitored by a Multisensor System
Table 3
Details of specimens and loading conditions.
| | Specimen | Loading (kN) | FRP-OFBG | Fatigue life (106) | | Pmin | Pmax | ΔP | Pu | L = Pmax/Pu (−) | Nf | N0.2 |
| | Number 1 | — | — | — | 158.6 | — | Yes | — | — | | Number 2 | — | — | — | 180.0 | — | No | — | — | | Number 3 | 27.2 | 90.6 | 63.4 | — | 0.60 | Yes | 0.917 | 0.480 | | Number 4 | 27.2 | 82.7 | 55.5 | — | 0.55 | Yes | 1.405 | 0.951 | | Number 5 | 27.2 | 74.7 | 47.5 | — | 0.50 | Yes | 1.769 | 1.100 | | Number 6 | 27.2 | 66.8 | 39.6 | — | 0.45 | Yes | 2.162 | 1.252 | | Number 7 | 27.2 | 62.2 | 35.0 | — | 0.35 | Yes | 2.107 | 1.830 | | Number 8 | 27.2 | 85.4 | 58.2 | — | 0.50 | No | 2.690 | 2.077 | | Number 9 | 27.2 | 76.4 | 49.2 | — | 0.45 | No | 3.676 | 3.251 | | Number 10 | 27.2 | 62.2 | 35.0 | — | 0.35 | No | 4.646 | 3.256 | | Number 11 | 27.2 | 62.2 | 35.0 | — | 0.35 | No | 3.497 | 2.876 | | Number 12 | 27.2 | 62.2 | 35.0 | — | 0.35 | No | 2.954 | 2.751 |
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