Table 4 Isolation system parameters that give smallest max. base displacement.

From: Selection of seismic isolation system parameters for the near-optimal design of structures

Earthquake

PGA

PGV

PGD

Min \(x_{b\;max}\)

\(\mu (\%)\)

\(1/\alpha \)

Max \(x_{b\;max}\)

\(\mu (\%)\)

\(1/\alpha \)

Lucerne

689.64

25.72

8.82

2.92

10

20

3.11

15

5

Yermo

240.34

50.81

41.27

7.16

15

10

7.68

8

5

Hollister

361.99

62.78

30.18

18.45

15

20

12.58

4

15

Lexington

433.60

84.43

14.67

18.15

12

20

8.59

4

5

Petrolia

649.42

89.45

30.58

23.95

15

20

15.40

4

5

Newhall

577.81

94.72

30.47

17.17

15

20

13.53

4

5

El Centro

427.72

108.71

55.16

18.05

15

7

23.27

4

20

Sylmar

826.98

128.89

32.55

29.62

15

20

26.95

4

5