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 |
|
|