Research Article
Optimal Seismic Intensity Measure Selection for Isolated Bridges under Pulse-Like Ground Motions
Table 6
Demand models and efficiency comparison of IMs subjected to far-field ground motions.
| Height (m) | μx | δx | PGA | PGV | PGD | CAD | Ia | Iv | CAV | PGA | PGV | PGD | CAD | Ia | Iv | CAV |
| 4 | 0.27 | 0.22 | 0.27 | 0.23 | 0.23 | 0.21 | 0.23 | 0.47 | 0.33 | 0.53 | 0.44 | 0.42 | 0.35 | 0.45 | 6 | 0.31 | 0.29 | 0.36 | 0.31 | 0.29 | 0.28 | 0.29 | 0.56 | 0.47 | 0.60 | 0.54 | 0.51 | 0.49 | 0.53 | 8 | 0.38 | 0.30 | 0.40 | 0.33 | 0.34 | 0.30 | 0.34 | 0.60 | 0.50 | 0.64 | 0.58 | 0.55 | 0.52 | 0.57 | 10 | 0.44 | 0.37 | 0.43 | 0.37 | 0.40 | 0.35 | 0.39 | 0.64 | 0.53 | 0.65 | 0.58 | 0.58 | 0.54 | 0.59 | 12 | 0.50 | 0.41 | 0.48 | 0.42 | 0.45 | 0.39 | 0.43 | 0.64 | 0.56 | 0.67 | 0.60 | 0.60 | 0.55 | 0.60 | 14 | 0.56 | 0.43 | 0.53 | 0.46 | 0.51 | 0.41 | 0.50 | 0.61 | 0.49 | 0.60 | 0.53 | 0.55 | 0.47 | 0.55 | 16 | 0.65 | 0.51 | 0.56 | 0.50 | 0.59 | 0.46 | 0.57 | 0.64 | 0.49 | 0.58 | 0.53 | 0.58 | 0.47 | 0.58 | 18 | 0.73 | 0.58 | 0.59 | 0.53 | 0.68 | 0.50 | 0.65 | 0.60 | 0.47 | 0.54 | 0.48 | 0.53 | 0.43 | 0.51 | 20 | 0.82 | 0.63 | 0.65 | 0.56 | 0.75 | 0.53 | 0.71 | 0.53 | 0.45 | 0.50 | 0.45 | 0.49 | 0.42 | 0.47 |
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Note: bold values indicate more efficient IM.
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