Environmental Engineering Reference
In-Depth Information
3.5
Dynamic programming
Enhanced method
Morgenstern-Price
3
c
= 40,
= 30
φ
c
= 30,
φ
= 30
2.5
c
= 40,
φ
= 20
c
= 20,
φ
= 30
2
c
= 30,
φ
= 30
c
= 10,
φ
= 30
c
= 40,
φ
= 10
1.5
c
= 20,
φ
= 30
c
= 30,
φ
= 10
c
= 10,
φ
= 20
1
c
= 20,
φ
= 10
c
= 10,
φ
= 10
0.5
0
2
4
6
8
10
12
Janbu's stability number
Figure 12.85
Factor of safety versus Janbu's stability number for homogeneous slopes (Pois-
son's ratio
μ
=
0
.
33 in stress analysis).
3.5
DP;
μ =
0.33
DP;
μ =
0.48
0.48
Morgenstern-Price
μ =
3
2.5
μ =
0.33
2
1.5
1
0.5
0.5
1
1.5
2
2.5
3
3.5
Factor of safety by Morgenston-Price
Figure 12.86
Dynamic programming results compared with Morgenstern-Price factors of safety
for homogeneous soil slope.
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