Research Article
Damage Detection for Continuous Bridge Based on Static-Dynamic Condensation and Extended Kalman Filtering
Table 2
Parameter identification results under free vibration.
| | Case | damage | No noise | 5% noise | | (N/m) (error) | (N/m) (error) | | | (N/m) (error) | (N/m) (error) | | |
| | 1 | intact | 3.063 × 108 (1.2%) | 3.858 × 108 (0.44%) | 1.087 | 3.06 × 10−3 | 3.01 × 108 (2.9%) | 3.81 × 108 (1.6%) | 1.056 | 3.00 × 10−3 | | 2 | 3%
5% | 2.958 × 108 (1.6%) | 3.666 × 108 (0.41%) | 1.083 | 3.068 × 10−3 | 2.82 × 108 (6.6%) | 3.63 × 108 (1.3%) | 1.008 | 3.10 × 10−3 | | 3 | 10%
10% | 2.741 × 108 (1.7%) | 3.474 × 108 (0.13%) | 1.074 | 3.069 × 10−3 | 2.64 × 108 (5.3%) | 3.45 × 108 (0.8%) | 1.008 | 3.10 × 10−3 | | 4 | 15%
8% | 2.612 × 108 (2.3%) | 3.550 × 108 (0.42%) | 1.069 | 3.069 × 10−3 | 2.49 × 108 (6.1%) | 3.52 × 108 (1.2%) | 1.002 | 3.10 × 10−3 |
|
|
