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116
116
93
93
93
93
70 kN
70
3 kN/m
2 m
1
2
2
1
1
2
2
1
2
320 kN
317
201
195
102
76
96
3
70
+
+
S.F.D.
3
-
70
96
-
76
102
195
201
317
320
146 kN.m
146 kN.m
-
-
B.M.D.
172.5
172.5
+
568.5
568.5
766.5
766.5
768
Figure 4.45 Straining actions from dead loads acting on an intermediate cross girder.
Dead Loads
Intermediate reactions from stringers due to dead loads
¼
15
:
5
6
¼
93 kN
Reactions from stringers near supports due to dead loads
¼
93
2
:
5
=
2
¼
116 kN
Reactions from stringers at edges due to dead loads
¼
93
1
:
5
=
2
¼
70 kN
m
Assuming the cross girders are simply supported by the main plate
girders, we find that the maximum shear force and bending moment due
to dead loads on an intermediate cross girder (see
Figure 4.45
) are as follows:
Q
D
:
L
:
¼
320 kN
M
D
:
L
:
¼
768 kNm
Own weight of cross girder
¼
3
:
0kN
=
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