Civil Engineering Reference
In-Depth Information
25 cm
2.0
x
x
1.6
25 cm
22
22
2.0
Figure 4.149 Intermediate stability web stiffeners.
1
w¼
716 +
p
¼
0
:
83 but
w
1
:
0
716
2
523
2
0
:
0
:
0
:
0
:
83
194
:
26
100
275
1
Then,
N
b
,
Rd
¼
¼
4,030,895N
:
1
N
b
,
Rd
¼
4030
:
9kN
>
N
Ed
¼
3132
:
8 kN Then O
ð
:
K
:
Þ
4.5.7.2 Intermediate Stiffeners
Intermediate stiffeners (see
Figure 4.149
) can be designed by choosing its
dimensions such that
a
1
h
w
¼
p
¼
1
1500
2700
¼
0
:
556
<
:
414 Then O
ð
:
K
:
Þ
and
5
h
2
w
t
w
5
270
3
6
3
1
:
1
:
1
:
8cm
4
I
st
a
1
¼
¼
5374
:
150
2
6
3
12 + 2
2
25
3
3
2
I
st
¼
46
1
:
=
=
12 + 50
13
:
¼
22,913 cm
4
8cm
4
Then O
>
5374
:
ð
:
K
:
Þ
4.5.8 Design of Stringer Bracing (Lateral Shock or Nosing
Force Bracings)
The stringer bracing are subjected to lateral moving reversible force of
100 kN. The bracing members carry either tensile or compressive forces
according to the changing direction of the lateral shock force (transverse
horizontal force) (see
Figure 4.150
)
. The cross section of the bracing
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