Civil Engineering Reference
In-Depth Information
Critical row of bolts
50 cm
3
8.5 cm
174 cm
y
y
170 cm
33
3
70
Figure 4.122 The field splice of the main plate girder.
diameter plus 0.3 cm clearance), we can determine the horizontal shear force
(
H
) per bolt and the vertical shear per bolt (
V
) as follows:
H ¼
Area from centrelines between bolts
f
y
F
y
¼
275MPa
H ¼
85
30
ð
Þ
16
275
=
2
¼
121,000N
¼
121 kN
V¼
maximum shear resisted by web/total number of bolts.
Maximum shear resisted by web:
1
:
2
275
1740
16
V
b
,
Rd
¼V
bw
,
Rd
p
1
¼
5,304,232N
¼
5304
:
2kN
:
1
V ¼
5304
:
2
=
40
¼
132
:
6kN
The
resultant
of
the
forces
per
bolt
(
R
)
is
equal
to
p
121
2
+ 132
6
2
5 kN, which is less than 206 kN (the resistance of
the bolt in double shear). Then O.K.
:
¼
179
:
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