Research Article
Nonlinear Regression Based Health Monitoring of Hysteretic Structures under Seismic Excitation
Table 6
Identification results for 20 seismic events with 10% RMS added noise.
| | Event # | Preyielding stiffness (KN/m) | Yield displacement (mm) | Bilinear factor | Viscous damping coefficient (KNs/m) | Estimated cumulative plastic deformation (mm) | Residual deformation (mm) |
| | EQ1 | 27237 | 47.3 | 0.071 | 474 | 168.1 | 42.0 | | EQ2 | 27421 | — | — | 448 | — | — | | EQ3 | 27218 | — | — | 500 | — | — | | EQ4 | 26870 | 51.0 | 0.108 | 544 | 391.5 | 54.7 | | EQ5 | 26971 | — | — | 557 | — | — | | EQ6 | 28119 | — | — | 480 | — | — | | EQ7 | 27411 | 45.8 | 0.141 | 475 | 21.1 | 20.0 | | EQ8 | 26967 | 46.0 | 0.200 | 577 | 214.7 | 33.4 | | EQ9 | 27622 | — | — | 461 | — | — | | EQ10 | 27531 | — | — | 453 | — | — | | EQ11 | 26723 | 46.7 | 0.154 | 512 | 500.4 | 9.3 | | EQ12 | 27571 | — | — | 453 | — | — | | EQ13 | 27346 | 44.6 | 0.131 | 468 | 198.1 | 30.0 | | EQ14 | 27819 | — | — | 478 | — | — | | EQ15 | 26976 | 47.1 | 0.112 | 506 | 98.3 | 60.8 | | EQ16 | 27016 | 47.4 | 0.123 | 521 | 368.0 | 91.9 | | EQ17 | 27470 | — | — | 463 | — | — | | EQ18 | 27289 | 46.6 | 0.126 | 480 | 234.6 | 64.0 | | EQ19 | 27540 | — | — | 459 | — | — | | EQ20 | 26974 | 46.9 | 0.128 | 503 | 307.7 | 97.9 | | True | 27300 | 46.5 | 0.065 | 521 | | |
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