Research Article
Effective Semiactive Base Isolation System under Multiple Earthquakes
Table 5
Peak response of structures under different earthquakes for set (A-6).
| Earthquake | Peak acceleration (cm/s2) | Peak interstory drift (cm) | Peak base drift (cm) | Optimal case | r = 10−0.5 | rl-a | r = 10−14 | r = 10−0.5 | rl-a | r = 10−14 | r = 10−0.5 | rl-a | r = 10−14 | Optimal case |
| El Centro | 412 | 412 | 444 | 522 | 0.094 | 0.118 | 0.134 | 0.246 | 0.214 | 0.192 | 0.178 | Loma Prieta | 391 | 391 | 397 | 490 | 0.130 | 0.151 | 0.150 | 0.214 | 0.187 | 0.187 | 0.187 | Northridge | 205 | 205 | 218 | 242 | 0.060 | 0.067 | 0.070 | 0.174 | 0.146 | 0.135 | 0.132 | Petrolia | 154 | 157 | 155 | 161 | 0.043 | 0.047 | 0.050 | 0.157 | 0.139 | 0.137 | 0.137 | Parkfield California | 361 | 361 | 364 | 364 | 0.058 | 0.059 | 0.059 | 0.145 | 0.145 | 0.145 | 0.145 | Taft | 245 | 245 | 256 | 281 | 0.060 | 0.060 | 0.060 | 0.158 | 0.149 | 0.149 | 0.149 |
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