Research Article
Prediction-Based Maintenance of Existing Bridges Using Neural Network and Sensitivity Analysis
Table 1
Potentially influencing factors.
| Attributes (unit) |
| Bridge geometry factors | Length (m) | Width (m) |
| Environmental factors | Elevation (m) | Yearly highest and lowest temperatures (°C) | Carbon dioxide concentration (ppm) | Airborne salt concentration (mdd·NaCl) | Yearly average snowfall (cm) | Yearly average rainfall (cm) |
| Loading condition | Daily traffic volume (vehicles/day)a | Rate of the large-size vehicles (%/day) |
| Other | Years in service (years) | Bridge type |
|
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aStatistics on traffic volume include large and small vehicles [ 37]. |