Table 3 The FAA values at the top of the three structures at different values of \(R_\mu\).

From: A nonlinear multi-parameter model for predicting floor acceleration amplification across diverse structural systems

Structure

Type

Stories

Direction

Fundamental

Period (s)

FAA at Roof

\(R_u= 0.5\)

\(R_u = 1.0\)

\(R_u= 1.5\)

\(R_u= 2.0\)

\(R_u= 2.5\)

\(R_u= 3.0\)

Reinforced

Concrete

Frame

5

L

0.66

2.81

2.26

2.03

1.85

1.71

1.36

T

0.64

2.85

2.28

1.95

1.85

1.70

1.38

10

L

1.37

2.12

2.07

1.67

1.44

0.96

–

T

1.31

1.98

2.01

1.64

1.45

1.49

–

15

L

2.04

1.97

1.65

1.43

1.44

1.42

1.16

T

1.93

1.96

1.61

1.39

1.43

1.44

1.17

Steel

Frame

5

L

0.78

3.30

2.95

2.86

2.77

2.68

2.55

T

0.90

3.73

3.45

3.19

2.90

2.62

2.40

10

L

1.65

3.39

3.06

2.81

2.70

2.56

2.39

T

1.87

2.92

2.74

2.51

2.40

2.31

2.23

15

L

2.57

2.25

2.04

1.88

1.80

1.75

1.72

T

2.69

2.02

1.88

1.77

1.74

1.73

1.72

Steel-Concrete

Composite

Structure

5

L

0.86

3.13

2.27

1.97

1.88

1.70

1.68

T

0.66

3.20

2.65

2.20

2.05

1.97

1.84

10

L

1.86

1.80

1.52

1.42

1.37

1.32

1.27

T

1.38

2.13

1.81

1.71

1.57

1.48

1.44

15

L

2.89

1.70

1.68

1.62

1.53

1.45

1.38

T

2.12

1.92

1.71

1.62

1.60

1.62

1.65

  1. “–” indicates the collapse of the main structure; L represents the longitudinal direction and T means the transverse direction.
Back to article page