Sanyo SGP-E120J2GU2, Руководство пользователя

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Water heat exchange unit
H - 25
8. Position of center of gravity and earthquake resistance calculation
Bolt span
S hort direction( l
1
)
l
1
= mm 㩷
L ong direction( l
2
)
l
2
= mm 㩷
Actual strength of the foundation bolts
Short term allowable tensile stress(f
t
)
f
t
=
㩷
176
㩷 㩷
N/mm
2
…
㩷
for SS400 f
t
:176
S hort term allowable shear stress (f
s
)
f
s
= 㩷 99 㩷 㩷 N/mm
2
… 㩷 for SS400 f
S6
: 132×0.75
Pull out load on one bolt
Shor t direction(R
b1
)
R
b 1
= 㩷 㩷
㩷 㩷
㩷 㩷 㩷 㩷 㩷 㩷 㩷 㩷 㩷 㩷 㩷 㩷 㩷 㩷 㩷 㩷 㩷 㩷 㩷 = 㩷 N
Long direction(R
b2
)
R
b 2
=
㩷 㩷 㩷 㩷 㩷 㩷 㩷 㩷 㩷 㩷 㩷 㩷 㩷 㩷 㩷 㩷 㩷 㩷 㩷 㩷 㩷 㩷 㩷
=
㩷 㩷
N
Foundation bolt shear stress(
)
= 㩷 㩷 㩷 㩷 㩷 㩷 㩷 㩷 㩷 㩷 = 㩷 㩷 㩷 N/mm
2
Foundation bolt tensile stress
Shor t direction(
1
)
1
= 㩷 㩷 㩷 㩷 㩷 㩷 㩷 㩷 㩷 㩷 = 㩷 㩷 㩷 N/mm
2
Long direction(
2
)
2
= 㩷 㩷 㩷 㩷 㩷 㩷 㩷 㩷 㩷 㩷 = 㩷 㩷 N/mm
2
Allowable tensile stress in a bolt subject to simultaneous tensile and shear stress(f
ts
)
f
t s
=1.4 f
t
-1.6 = 㩷 231.4 㩷 N/mm
2
Judgment
Tensile load
Short direction
䋺
if R
b1
<T
a
OK R
b1
=
㩷 㩷
<
㩷
T
a
= 4 ,508
L ong direction
䋺
if R
b2
<T
a
OK R
b2
=
㩷 㩷
<
㩷
T
a
= 4 ,508
Shear stress
if < f
s
㩷 OK = 㩷 㩷 < 㩷 f
s
= 㩷 99
Tensile stress
s hort direction 䋺 if
1
< f
t
< 㩷 f
t 㩷
= 㩷 176
㩷 㩷 㩷 㩷 㩷 㩷 㩷 㩷 㩷 㩷 㩷 㩷 㩷 㩷 㩷 㩷 㩷 㩷 㩷 OK
1
= 㩷 㩷
㩷 㩷 㩷 㩷 㩷 㩷
1
< f
ts
< 㩷 f
ts
= 㩷 231.4
L ong direction
䋺
if
2
< f
t
<
㩷
f
t 㩷
=
㩷
176
㩷 㩷 㩷 㩷 㩷 㩷 㩷 㩷 㩷 㩷 㩷 㩷 㩷 㩷 㩷 㩷 㩷 㩷 㩷
OK
2
=
㩷 㩷
㩷 㩷 㩷 㩷 㩷 㩷
2
< f
ts
<
㩷
f
ts
=
㩷
231.4
F
H
h
h
G
–(W - F
V
)
l
G1
l
1
n
1
F
H G
- ( W-F
V
)
l
G2
l
2
n
2
F
H
N A
R
b 1
A
R
b 2
A
11
12
3
δ
δ
δ
δ
δ
δ
τ
τ
τ
δ δ
δ δ
τ τ
Distance from center of gravity to bolt
S hort direction( l
G1
)
l
G1
= 㩷 㩷 㩷 mm 㩷
L ong direction( l
G2
)
l
G2
= 㩷 mm 㩷