Research Article
Earthquake Damage Assessment for RC Structures Based on Fuzzy Sets
Table 3
Damage degree and the limit value for different damage indices.
| Seismic fortification level | Frequent earthquake | Moderate earthquake | Rare earthquake |
| Damage degree | Intact | Minor damage | Moderate damage | Severe damage | Collapse | Global damage index | 0~0.10 | 0.10~0.30 | 0.30~0.65 | 0.65~0.85 | 0.85~1.0 | Number of inelastic cycles | ā | ā | 10~20 | 4~10 | 0~4 | Maximum interstory drift | 0~1/450 | 1/450~1/300 | 1/300~1/150 | 1/150~1/50 | >1/50 | Coefficient of hysteresis energy concentration | 1.0~2.073 + 0.046n | 2.073 + 0.046n~2.854 + 0.084n | 2.854 + 0.084n~3.346 + 0.113n | 3.346 + 0.113n~3.554 + 0.132n | >3.554 + 0.132n |
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