PSI - Issue 44

P. Sorrentino et al. / Procedia Structural Integrity 44 (2023) 1656–1663 P. Sorrentino et al./ Structural Integrity Procedia 00 (2022) 000 – 000

1662

7

12x

13x

40

40

F/w (%)

F/w (%)

100 kg/cm2 Bpes/Heq Bmin/Heq Bmax/Heq

100 kg/cm2 Bpes/Heq Bmin/Heq Bmax/Heq

35

35

30

30

λ= 26.67

25

25

20

20

λ= 17.64

15

15

λ= 7.98 λ= 3.62 λ= 9.74

10

10

5

5

λ= 2.09

d/H (%)

d/H (%)

0

0

0.00

0.20

0.40

0.60

0.80

1.00

1.20

1.40

0.00

0.20

0.40

0.60

0.80

1.00

1.20

1.40

14x

15x

40

40

F/w (%)

F/w (%)

100 kg/cm2 Bpes/Heq Bmin/Heq Bmax/Heq

100 kg/cm2 Bpes/Heq Bmin/Heq Bmax/Heq

35

35

30

30

λ= 25.51

25

25

20

20

λ= 15.21

15

λ= 12.81

15

λ= 8.11

10

10

λ= 5.06

5

5

λ= 2.64 d/H (%)

d/H (%)

0

0

0.00

0.20

0.40

0.60

0.80

1.00

1.20

1.40

0.00 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60

16x

40

F/w (%)

100 kg/cm2 Bpes/Heq Bmin/Heq Bmax/Heq

35

30

25

20

15

10

λ= 6.92 λ= 5.75 λ= 7.79

5

d/H (%)

0

0.00 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60

Figure 4. Pushover curves (continue red line) and comparison with the simplified formula (dashed red line), B min /H (dashed blue line) and B max /H (dashed green line): walls 12x – 16x.

In Figure 5 the comparison between the proposed formula and the result of pushover analysis is provided. The points, indicating the load multipliers of each wall, are all allocated very close to the bisector line (λ eq =B pes /(2H eq )), with exception of some point, the walls 4x, 12x and 13x, that exhibit a greater distance. These walls are characterized by a greater irregularity in opening in horizontal and vertical direction. Consequently, the results show that values obtained with the proposed formula well approximate the values obtained by the pushover analysis and the scatters assume greater values as the irregularity in the arrangement of the openings in the vertical and horizontal direction increases.