Research Article
Shaking Table Test for Evaluating the Seismic Performance of Steel Frame Retrofitted by Buckling-Restrained Braces
Table 5
Interstory drift ratios of the specimen.
| | PGA (g) | | 0.1 | 0.2 | 0.3 | 0.4 | 0.5 | 0.6 | 0.7 | 0.8 | 0.9 |
| | El Centro wave | Frame | 1/2750 | 1/1032 | 1/752 | 1/611 | 1/499 | 1/415 | 1/340 | 1/252 | 1/198 | | BRB | 1/8500 | 1/3600 | 1/1714 | 1/1384 | 1/1000 | 1/632 | 1/434 | 1/327 | 1/263 | | η (%) | 69.44 | 71.33 | 56.13 | 55.85 | 50.10 | 34.34 | 21.66 | 22.94 | 24.71 |
| | Kobe wave | Frame | 1/2357 | 1/840 | 1/671 | 1/556 | 1/454 | 1/334 | 1/278 | 1/233 | 1/216 | | BRB | 1/7600 | 1/3272 | 1/2000 | 1/1286 | 1/632 | 1/400 | 1/371 | 1/303 | 1/283 | | η (%) | 73.81 | 74.33 | 66.45 | 56.77 | 28.16 | 16.50 | 25.07 | 23.10 | 23.67 |
| | Taft wave | Frame | 1/2133 | 1/727 | 1/633 | 1/532 | 1/481 | 1/403 | 1/317 | 1/244 | 1/219 | | BRB | 1/4500 | 1/2400 | 1/1565 | 1/1241 | 1/766 | 1/545 | 1/349 | 1/313 | — | | η (%) | 52.64 | 69.71 | 59.55 | 57.13 | 37.21 | 26.06 | 9.17 | 22.04 | — |
| | Average value | Frame | 1/2380 | 1/847 | 1/680 | 1/565 | 1/476 | 1/380 | 1/309 | 1/238 | 1/211 | | BRB | 1/6363 | 1/3000 | 1/1742 | 1/1301 | 1/772 | 1/507 | 1/381 | 1/314 | 1/273 | | η (%) | 64.65 | 71.71 | 60.85 | 56.61 | 38.15 | 24.96 | 18.86 | 22.70 | 22.76 |
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