Page 375 - Advanced Design Examples of Seismic Retrofit of Structures

344 Advanced Design Examples of Seismic Retrofit of Structures

2
TABLE 5.25 Allowable Soil Pressure (kg/cm )
B (m) Pad Foundation Strip Footing
0 15.17 13.02
0.5 15.99 14.06
0.8 16.49 14.68
1 16.82 15.09
1.5 17.64 16.13
1.6 17.81 16.33
1.7 17.97 16.54
2 18.47 17.16
2.2 18.80 17.58
2.5 19.29 18.20
3 20.12 19.23

concentrated force to be resisted is applied at a distance from the member end
that is greater than the depth of the member d, the section should satisfy Eq.
(5.36).
R
0:66F y (5.36)
t w N +5kð Þ
where:
k ¼distance from outer face of the flange to the web toe of the fillet;
N ¼length of bearing (not less than k for end beam reactions); and
t w ¼web thickness.
For the short column, we have:

6:9 10 3 kg kg
¼ 1346:34 1557:6
0:52 + 5 1:65Þ cm 2 cm 2
ð
As a result, the short column satisfies the requirements for web local yield-
ing. As an example, the details of column strengthening A-1 are shown in Fig.
5.31.
The results of the foundation evaluation of the main and sports buildings
retrofitted with eccentric braces are not presented here, for brevity. Similar
to the results of the buildings retrofitted with concentric braces, the foundations