Sanyo SGP-E120J2GU2, Руководство пользователя

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Design
D - 40
Example of earthquake resistance calculation sheet
Earthquake resistance calculation sheet
Model name:
1. Foundation bolt data
No. of foundation bolts : N= No. of bolts in short direction: n
1
=
Foundation bolt diameter : D= mm No. of bolts in long direction : n
2
=
Foundation cross-sectional area : A= D
2
/4= mm
2
Installation method (refer to construction method) (can also be selected after calculation)
Foundation bolt short term allowable load : Ta= N/bolt
2. Calculation
Design horizontal magnitude : K
H
=
Operating load : W = N(product mass×9.8)
Horizontal earthquake force : F
H
= K
H
W= N
Height of center of gravity : h
G
= mm
Vertical earthquake force : F
V
= F
H
/2= N
Short direction Long direction
Bolt span
No. of bolts
Pull out load
l
1
= mm
n
1
= bolts
R
b1
= N
l
2
= mm
n
2
= bolts
R
b2
= N
Pull out load
Shear force
Tensile stress
R
b1
= N R
b1
< T
a
(= N/bolt)
=F
H
/N A= N/mm
2
< f
s
(= 132×0.75N/mm
2
)
1
=R
b1
/A= N/mm
2
1
< f
t
(= 176N/mm
2
)
f
ts
= 1.4f
t
-1.6 = N/mm
2
1
< f
ts
= N/mm
2
R
b2
= N R
b2
< T
a
(= N/bolt)
=F
H
/N A= N/mm
2
< f
s
(= 132×0.75N/mm
2
)
1
=R
b2
/A= N/mm
2
2
< f
t
(= 176N/mm
2
)
f
ts
=1.4f
t
-1.6 = N/mm
2
2
< f
ts
= N/mm
2
Judgment
OK NG OK NG
Calculation formulae
Pull out load
R
b
: Pull out load (N)(short direction: R
b1
, long direction: R
b2
)
R
b
= l : Bolt span (mm) (short direction: l
1
, long direction: l
2
)
n : No. of bolts (short direction: n
1
, long direction: n
2
)
l
G
: Distance to CofG (mm) (short direction: l
G1
, long direction: l
G2
)
However, l
G
l /2
Allowable tensile stress in bolt subjected to simultaneous shear stress
f
ts
= 1.4f
t
-1.6 f
ts
: Allowable tensile stress in bolt simultaneously subject to shear stress (N/mm
2
)
f
t
:Allowable tensile stress in bolt subject to tensile stress only (N/mm
2
)
Reference: The material SS400 short term allowable tensile stress ft 176 N/mm
2 ,
SS400 short term allowable shear stress 132×0.75 N/mm
2
<Calculation dimensions>
F
H
h
G
- (W -F
V
) l
G
l n
h
Short direction
(front)
l
1
l
G1
G
l
2
l
G2
G
Long direction
π
τ τ
τ
τ
τ
τ
τ
σ
σ
σ
σ
σ
σ
Installation
location
Design horizontal
magnitude K
H
On the roof 1.0
On the ground 0.4
7. Center of gravity position and earthquake resistant design