Page 345 - Advanced Design Examples of Seismic Retrofit of Structures

324 Advanced Design Examples of Seismic Retrofit of Structures

TABLE 5.19 Initial Stiffness, Base Shear Corresponding to the Target
Displacement, and Yield Strength of the Main Building
Load K i K e V t V y
Pattern (ton/cm) (ton/cm) (ton) (ton) V t >0.8V y T e (s)
PX1 161.4 126.8 109.8 67.2 OK 0.55
PY1 80 74.82 282.86 252.9 OK 0.43
PX2 140.35 89.3 121.44 70.1 OK 0.61
PY2 79.02 76.98 288.46 249.44 OK 0.427
PX3 169.63 140.83 110.87 67.6 OK 0.53
PY3 108.1 101.16 279.02 243.8 OK 0.43
PX4 155.86 118.27 122.41 68.6 OK 0.56
PY4 106.74 99.51 285.2 244.8 OK 0.43

TABLE 5.20 Control of the Upper and Lower Truss Ridges in the Sports
Building
2
Truss F a (kg/cm ) P CL (ton) P UF (ton) DCR
B1 377.98 24.67 7.85 0.32
B2 377.98 24.67 7.08 0.29
B3 377.98 24.67 21.62 0.88
B4 377.98 24.67 12.96 0.53
B5 575.02 53.76 3.32 0.06
B6 575.02 53.76 17.70 0.33
B7 575.02 53.76 3.62 0.07
B8 575.02 53.76 17.67 0.33
B9 575.02 53.76 3.32 0.06
B10 575.02 53.76 17.70 0.33
B11 377.98 24.67 7.85 0.32
B12 377.98 24.67 7.08 0.29
B13 377.98 24.67 21.62 0.88
B14 377.98 24.67 12.96 0.53