Research Article
Yonjung High-Speed Railway Bridge Assessment Using Output-Only Structural Health Monitoring Measurements under Train Speed Changing
Table 3
Models parameters and evaluation for the displacement and acceleration measurements.
| Train | Parameter | PSC girder | Steel girder | Value | St. error (%) | -statistic | Value | St. error (%) | -statistic |
| Displacement models |
| KTX | | | 0.001 | | 0.383 | | 86.547 | | 0.964 | 0.010 | 92.920 | 0.933 | 0.011 | 84.223 | | | | 1.577 | | | 2.887 | | 0.293 | 0.097 | 3.023 | 0.256 | 0.055 | 4.655 | | 0.716 | 0.231 | 3.097 | 0.739 | 0.187 | 3.959 | | | 0.250 | | 0.009 | 0.231 | 0.037 |
| HEMU | | | | | | 0.002 | | | 0.846 | 0.015 | 55.562 | 0.971 | 0.010 | 100.448 | | | | 8.139 | | | 1.410 | | 0.000 | | 0.000 | 0.279 | 0.096 | 2.897 | | 0.867 | 0.206 | 4.202 | 0.733 | 0.227 | 3.226 | | 0.145 | 0.256 | 0.566 | | 0.273 | |
| Acceleration models |
| KTX | | | | 0.301 | | | | | 0.536 | 0.022 | 23.874 | 0.366 | 0.020 | 18.041 | | | | 2.188 | | | 5.770 | | 0.814 | 0.012 | 67.968 | 0.785 | 0.009 | 86.207 | | 0.172 | 0.020 | 8.676 | 0.275 | 0.019 | 14.720 | | 0.028 | 0.027 | 1.008 | | 0.018 | |
| HEMU | | | | 1.888 | | | 0.599 | | 0.623 | 0.020 | 31.644 | 0.199 | 0.026 | 7.521 | | | | 3.847 | | | 3.055 | | 0.744 | 0.015 | 48.710 | 0.847 | 0.013 | 65.742 | | 0.225 | 0.026 | 8.776 | 0.159 | 0.021 | 7.733 | | 0.062 | 0.037 | 1.659 | | 0.025 | |
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