Research Article
Mechanism Analysis and Parameter Optimization of Mega-Sub-Isolation System
Table 4
Influence of the number and locations of isolated substructures on control performance under Taft 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 | 0.2145 | 3.4452 | 2.6300 | 1.8100 | 68.65 | 4 | 0.2150 | — | 2.6512 | 1.6200 | 61.13 | 3 | 0.2230 | — | 2.7239 | 1.5271 | 56.10 | 2 | 0.2310 | — | 2.9320 | 1.3658 | 46.58 |
| 4, 5 | 0.2073 | 4.5531 | 2.2600 | 1.4202 | 62.76 | 3, 5 | 0.2152 | 4.7848 | 2.4763 | 1.3413 | 54.16 | 2, 5 | 0.2214 | 4.8455 | 2.5872 | 1.4460 | 55.80 |
| 3, 4, 5 | 0.1742 | 3.0521 | 2.3292 | 1.9363 | 83.13 | 2, 4, 5 | 0.1816 | 3.0168 | 2.2393 | 1.6692 | 74.53 |
| 2, 3, 4, 5 | 0.1200 | 0.73 | 2.1208 | 1.8520 | 86.12 |
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