PSI - Issue 64

Massimiliano Ferraioli et al. / Procedia Structural Integrity 64 (2024) 1025–1032 Ferraioli et al./ Structural Integrity Procedia 00 (2019) 000–000

1031

7

3

3

3

3

133 535 413 414 600 1703 334 μ μ + σ

133 535 413 414 600 1703 334 μ μ + σ

133 535 413 414 600 1703 334 μ μ + σ

133 535 413 414 600 1703 334 μ μ + σ

Column A X-Direction

Column A Y-Direction

Column D Y-Direction

Column D X-Direction

2

2

2

2

Story level

Story level

Story level

Story level

1

1

1

1

0.00% 0.50% 1.00% 1.50% 2.00%

0.00% 0.50% 1.00% 1.50%

0.00% 0.50% 1.00% 1.50%

0.00% 0.50% 1.00% 1.50% 2.00%

Peak IDR (%)

Peak IDR (%)

Peak IDR (%)

Peak IDR (%)

a)

3

3

3

3

133 535 413 414 600 1703 334 μ μ + σ

133 535 413 414 600 1703 334 μ μ + σ

133 535 413 414 600 1703 334 μ μ + σ

133 535 413 414 600 1703 334 μ μ + σ

Column A X-Direction

Column A Y-Direction

Column D Y-Direction

Column D X-Direction

2

2

2

2

Story level

Story level

Story level

Story level

1

1

1

1

0.00% 0.50% 1.00% 1.50%

0.00% 0.50% 1.00% 1.50%

0.00% 0.50% 1.00% 1.50% 2.00%

0.00% 0.50% 1.00% 1.50% 2.00%

b) Fig. 10. Variation of peak inter-story drift ratio (IDR) over the height. a) Orthogonal dissipative CBFs. b) Parallel dissipative EBFs. Peak IDR (%) Peak IDR (%) Peak IDR (%) Peak IDR (%)

a)

b) Fig. 11. Hysteresis loops. a) NiTi-based SMA dampers; b) Steel slit dampers. Collapse Prevention Limit State- EQ.133.

0.8

0.8

EQ. 334

EQ.334

Columns Beams

Columns Beams

0.6

0.6

0.4

0.4

0.2

0.2

Performance Ratio

Performance Ratio

0

0

0

10

20

30

40

0

10

20

30

40

Time (s)

Time (s)

a)

b)

Fig. 12. Performance ratio time-history under EQ.344. a) Orthogonal exoskeleton; b) Parallel exoskeleton.