Research Article
Mechanism Analysis and Parameter Optimization of Mega-Sub-Isolation System
Table 3
Influence of the number and locations of isolated substructures on control performance under El Centro ground motion.
| Programs | Maximum displacement of top main structure (m) | Maximum acceleration of top substructure (m/s2) | Total input energy ×106 (J) | Transfer energy ×106 (J) | Ratio (%) |
| 5 | 0.2485 | 4.6909 | 4.0509 | 2.6134 | 64.51 | 4 | 0.2583 | — | 4.6270 | 2.6066 | 56.33 | 3 | 0.2683 | — | 4.0293 | 1.7367 | 43.10 | 2 | 0.2792 | — | 4.0063 | 1.4347 | 35.81 |
| 4, 5 | 0.1905 | 4.7294 | 3.0926 | 2.4105 | 77.94 | 3, 5 | 0.1938 | 4.8097 | 3.1616 | 2.3381 | 73.95 | 2, 5 | 0.2299 | 5.3732 | 3.2344 | 2.0418 | 63.13 |
| 3, 4, 5 | 0.1565 | 3.4037 | 3.0567 | 2.7649 | 90.45 | 2, 4, 5 | 0.1812 | 3.3913 | 2.8621 | 2.2933 | 80.13 |
| 2, 3, 4, 5 | 0.1207 | 0.7740 | 2.3153 | 2.2736 | 98.20 |
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