Research Article
Long-Term Structural Health Monitoring System for a High-Speed Railway Bridge Structure
Table 1
Sensitivity analysis of bridge parameters for SHM design.
| Structure | Key position | Critical member | Parameter | Importance | Variation under temperature action | Sensitivity | Decision |
| Pier | Side spans | 4# and 10# piers | Longitudinal displacement | Critical | 229 mm | Sensitive | Monitor |
| Main girder | In the middle of the main span | Steel deck | Vertical displacement | Less-important | 35 mm | Less-sensitive | No |
| Truss arch | In the middle of the main span | Top chord member, diagonal web member, arch rib chord member, and bottom chord member | Static strain | Critical | 280 με | Sensitive | Monitor |
| Truss arch | In the middle of the main span | Top chord member and bottom chord member | Temperature | Critical | 60°C | Sensitive | Monitor |
| Main girder | In the middle of the main span | Steel deck | Temperature | Less-important | 60°C | Less-sensitive | No |
| Whole bridge | / | / | Frequency | Important | / | Nonsensitive | Monitor one |
| Truss arch | In the middle of the main span | Top chord member | Wind | Less-important | / | Less-sensitive | No |
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