Research Article
New Bridge Weigh-in-Motion System Using Piezo-Bearing
Table 3
Estimated vehicle’s speed and axle loads using the proposed BWIM bearings.
| | Estimated values | Speed case | | 20 km/h | 80 km/h |
| | Truck speed | Average (km/h) | 20.532 | 85.887 | | Error (%) | 2.67 | 7.36 |
| | Axle distance | (mm) | 4391.65 | 4532.95 | | Error (%) | 4.56 | 7.92 | | (mm) | 4448.68 | 4532.95 | | Error (%) | 5.92 | 7.92 |
| | Axle loads | Front axle (kN) | 48.602 | 47.747 | | Error (%) | 1.25 | 0.53 | | Middle axle (kN) | 191.164 | 192.165 | | Error (%) | 0.43 | 0.009 | | Rear axle (kN) | 190.143 | 181.599 | | Error (%) | 0.97 | 5.42 |
| | Total load | Total (kN) | 429.909 | 421.512 | | Error (%) | 0.48 | 2.43 |
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