Page 131 - Çevre Şehir İklim İngilizce - Sayı 4

Cenk Alhan - Mert Hacıemiroğlu

Uninterrupted Use under DD-1 (KK)
Infrastructure Performance Target
TBDY (2018), Table 3.5
Earthquake load reduction (R) and Coef-
ficient of Overstrength (D) for the Limited R=1.5 and D=1.5
Damage Level to the Superstructure

Earthquake load reduction coefficient for R = 1
infrastructure (R)
The Spectral Acceleration Coefficients S = 1.618 and S = 0.454
for DD1 s 1
The Spectral Acceleration Coefficients
s
for DD2 S = 0.927 and S = 0.259
1
S DS = S x F = 1.618 x 1.2 =1.942
s
s
The Design Spectral Acceleration Coeffi-
cients for DD1
S D1 = S x F = 0.454 x 1.5 =0.681
1
1
S DS = S x F = 0.927 x 1.2 = 1.112
s
s
The Design Spectral Acceleration Coeffi-
cients for DD2
S D1 = S x F = 0.259 x 1.5 = 0.389
1
1
The self-weight of reinforced concrete 25.0 kN/m 3
elements
2
Coating Load (Hotel/Roof) 2.50kN/m /5.00kN/m 2
Partition Wall Load 1.50 kN/m 2
2
Live Load (Hotel/Corridor) 2.00 kN/m / 5.00 kN/m 2
2
Live Load (Roof/Snow) 1.00 kN/m / 0.75 kN/m 2
The two main parameters affecting the behavior of Curved Surface Friction
(EYS) isolators and to be selected for the design are the effective coefficient
of friction (μ) and the radius of curvature (R ). The main parameters in the
c
force-displacement relationship are as follows: Characteristic strength (F ),
Q
initial rigidity (k ), secondary rigidity (k ), the effective rigidity corresponding to
1
2
a displacement D (k ), the force corresponding to a displacement D (F), the
e
characteristic strength (F ) and effective yield displacement (D ).
y
y
The characteristic strength of EYS Pendulum type isolators, as given in
Equation (1) (TBDY (2018), Equation 14B.1), is equal to multiplication of the
effective friction coefficient μ by the vertical force P acting on the isolator:

120 The Journal of Environment, Urban and Climate