9-83
(5)
:
V
(kN) 0
20 kN
30 kN 20 kN
RB = 40 kN RD = 30 kN
Maximum negative y
+
9-83
9-84
:
(5)
:
0
1.0 kN 4.0 kN 3.0 kN
V
(kN)
0
-1
EIy
(kN m3)
9-84 [
V
y
(in)
M/EI
(in–1)
M M/EI
Moment-Area Method
9-85
9-86 [
9-87
(in)
4 K/ft = 333.3 lb/ft
20 000 lb
9-88 [
9-89
9-90
7.01×10
-4
M
(N m)
60 N
9-91
Then
M/EI
()
4.108×
6.456×
2.348×
20 kN 30 kN
9-92 ;
Figure P9
–
82
–
80
[3.284× ]
20 kN
30 kN
20 kN
9-93
×
Figure P9-83
V 300
9-94
Figure P9-94 600 lb
M/EI
( )
(× )
4000 lb
9-95
M/EI
( )
(× )
20 K
9-96
Figure P9
–
96
W18×55
V
1/2×8 Plate
=
9-97
Figure P9-97
M/EI
(
(× )
-4.784
-4.635
–
16.15
–
3.36
6
1.8 kN
R
A
= 2.52 kN
9-98
Figure P9-98
V
M