Page 150 - Advanced Design Examples of Seismic Retrofit of Structures

142 Advanced Design Examples of Seismic Retrofit of Structures

0.40
Distance of building center of rigidity and center of mass, % 0.30
0.35

0.25

0.20
0.15

0.10
0.05
0.00
STORY9 STORY8 STORY7 STORY6 STORY5 STORY4 STORY3 STORY2 STORY1 STORY0 STORY-1 STORY-2
Integrated-DX 0.15 0.16 0.17 0.17 0.18 0.18 0.16 0.13 0.07 0.08 0.13 0.08
South-DX 0.15 0.22 0.17 0.16 0.16 0.15 0.13 0.11 0.03 0.14 0.19 0.13
North-DX 0.09 0.17 0.18 0.18 0.18 0.18 0.17 0.13 0.09 0.21 0.36 0.17
(A)
0.40
Distance of building center of rigidity and center of mass, % 0.30
0.35

0.25
0.20

0.15
0.10
0.05

0.00
STORY9 STORY8 STORY7 STORY6 STORY5 STORY4 STORY3 STORY2 STORY1 STORY0 STORY-1 STORY-2
Integrated-DY 0.07 0.06 0.05 0.07 0.16 0.19 0.18 0.18 0.18 0.14 0.09 0.09
South-DY 0.05 0.08 0.24 0.24 0.37 0.38 0.37 0.35 0.32 0.16 0.05 0.02
North-DY 0.20 0.05 0.08 0.13 0.18 0.22 0.24 0.23 0.28 0.28 0.13 0.15
(B)
FIG. 3.16 Distance of center of mass and center of rigidity in each story. (A) X-direction.
(B) Y-direction.

– development of “resisting cores” in the most favorable locations of the
building in accordance with the architectural concerns in order to minimize
the CoM-CoR eccentricity and irregularity, increasing the stability, ensur-
ing proper stiffness distribution, and increasing the resistance of the build-
ing. In the next stage, the possible retrofit solutions are studied and the
best method is selected based on technical, economical, and feasibility
considerations.