Civil Engineering Reference
In-Depth Information
M
0
X
1
X
2
B
A
C
M
0
L
M
0
L
R
A
R
C
x
3
L
/4
L
/4
(a)
S
AB
M
BC
A
X
1
M
AB
X
2
S
BC
M
0
L
M
0
L
L
x
x
(b)
(c)
A
B
C
Shear force
ve
M
0
L
M
0
L
(d)
M
0
/4
ve
A
B
Bending
moment
C
M
0
ve
(e)
3
M
0
/4
A
B
C
F
IGURE
3.17
Shear
force and bending
moment diagrams
for the beam of
Ex. 3.9
Deflected
shape
Point of
contraflexture
(f)
vertically downward. Note that
R
A
and
R
C
are independent of the point of application
of
M
0
.
Although there is a loading discontinuity at B it is a point moment and will not affect
the distribution of shear force. Thus, by considering the vertical equilibrium of either
