Page 92 - Advanced Design Examples of Seismic Retrofit of Structures

3.39 R 1.3 B 2.62 R 1.62 R 1.62 R 4.24 R
4.67 R 1.54 R 1.81 R 1.92 R 1.81 R 1.32 B 2.76 R 13.76 R
1.65 B 2.32 B 4.97 B
2.52 B
2.68 B
1.91 B 3.66 B 3.66 B R37.8 R 7.44 R 2.73 R 1.12 B
46.56
1.14 B 1.16 B 1.16 B 7.78 R
9.03 R 1.21 B 1.19 B
8.93 R
1.19 B 1.19 B 1.16 B
2.49 B
1.66 B
1.91 B 3.66 B 3.66 B 2.16 B
11.36 R 21.79 R11.36 R5 14 R 1.93 R 1.72 R 1.55 R 4.96 R
.1
4.59 R 1.44 R 1.89 R 1.68 R 1.6 R 1.68 R 4.39 R
(A)
1.66 R 1.22 B 1.28 B 1.25 B 1.25 B 2.07 R
2.26 R 1.24 B 1.25 B 1.26 B 1.25 B 1.23 B 1.7 R 7.13 R
1.92 B 2.46 B 2.83 B 2.13 B
2.75 B
3.53 B 3.53 B
2.15 B 14.33 R 3.03 R 1.17 B 1.14 B
17.39 R
1.15 B 1.15 B 1.15 B 3.31 R
3.7 R 1.17 B 1.16 B
3.72 R 1.16 B 1.16 B 1.15 B
5.8 B 2.11 B
1.62 B
2.15 B
3.53 B 3.53 B 1.98 B
2.47 R
19.91 R 27.73 R 19.91 R 1.26 B 1.25 B 1.25 B 2.38 R
2.28 R 1.23 B 1.25 B 1.24 B 1.24 B 1.24 B 2.18 R
(B)
FIG. 2.41 Plan of the vulnerable walls of the example building with a flexible diaphragm without
horizontal ties. (A) Floor story. (B) First story.

FIG. 2.42 Plot of damage-progression index versus earthquake severity for unretrofitted struc-
tures (ABC) and for stability-based (GHI) and strength-based (DEF) retrofitted structures [16].