Open Access
Table 1
Peak responses of the structure due to 1940 El-Centro, 1999 Chi-Chi, and 1999 Gebze Turkey earthquake.
| Control algorithm | El-Centro earthquake | Chi-Chi earthquake | Gebze earthquake | ||||||
|---|---|---|---|---|---|---|---|---|---|
| Uncontrolled | Clipped optimal LQR | Modified LQR | Uncontrolled | Clipped optimal LQR | Modified LQR | Uncontrolled | Clipped optimal LQR | Modified LQR | |
| Displacement (cm) | 0.55 | 0.09 | 0.07(−23) | 0.14 | 0.03 | 0.02(−33) | 0.0741 | 0.021 | 0.020(−5) |
| 0.83 | 0.20 | 0.16(−19) | 0.22 | 0.05 | 0.03(−40) | 0.1165 | 0.0342 | 0.030(−12) | |
| 0.97 | 0.31 | 0.23(−24) | 0.27 | 0.06 | 0.04(−34) | 0.1381 | 0.0600 | 0.050(−17) | |
| Inter story drift (id) (cm) | 0.55 | 0.09 | 0.07(−23) | 0.14 | 0.021 | 0.02(−5) | 0.074 | 0.021 | 0.020(−5) |
| 0.29 | 0.10 | 0.09(−15) | 0.08 | 0.02 | 0.01(−50) | 0.042 | 0.017 | 0.010(−43) | |
| 0.14 | 0.11 | 0.07(−33) | 0.05 | 0.011 | 0.01(−9) | 0.022 | 0.026 | 0.020(−22) | |
| Acceleration (cm/s2) | 870 | 474 | 266(−44) | 181 | 38 | 36(−6) | 126 | 81 | 59(−28) |
| 1070 | 540 | 465(−14) | 268 | 63 | 59(−6) | 150 | 95 | 68(−28) | |
| 1400 | 772 | 525(−32) | 317 | 101 | 96(−5) | 185 | 114 | 110(−4) | |
| Force (N) | 0 | 984 | 737(−25) | 0 | 1398 | 1190(−15) | 0 | 1080 | 1050(−3) |
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