Civil Engineering Reference
In-Depth Information
10"
2#3
#3 @ 6" c/c
18"
4#6
1.0"
3"
FIGURE 5.5
Example 5.4 showing the FRP design details.
Example 5.5: Design
Redo the strengthening design of Example 5.4 using near-surface mounted (NSM)
CFRP tape (Figure 5.6) with the following properties:
Aslan 500
Dimensions: 0.63 in. x 0.079 in.
f
fu
=
300 ksi
E
f
=
18,000 ksi
ε=
fu
0.0167
M
=
2400.92 k-in
u
dh
b
0.63
2
f
=− =− =
18"
17.69"
f
2
f
f
d
d
83.5
5
16.25
17.69
y
Q
=ρ
=
0.01083
×
×
=
0.166
1
s
'
cf
2400.92
0.9510
16.25
17.69
Q
=
+
0.166 0.85
−
=
0.159
2
2
×× ×
17.69
2
a
d
a
d
(
)
−− ×
20.208
0.166
+
2.77
×
0.159
=
0
f
f
2
a
d
a
d
−
1.965
+
0.4404
=
0
f
f
0.63"
0.079"
FIGURE 5.6
CFRP strip for NSM application.
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