Geoscience Reference
In-Depth Information
35
Legend
Dry, Trautmann & O'Rourke (1983)
Dry, Current Study
30
4% Moisture, Current Study
8% Moisture, Current Study
Interpreted Curve
16.3 kN/m
3
25
16.3-16.6 kN/m
3
20
15.7 & 15.8 kN/m
3
16.9 kN/m
3
15
16.7 kN/m
3
15.9 kN/m
3
10
16.4 kN/m
3
5
0
2
4
6
8
10
12
Dimensionless Depth, H/D
Fig. 17.15. Maximum dimensionless force vs.dimensionless depth for varying moisture
content and dryunit weight
Fig. 17.16. Soil displacement patterns fordry and saturated sand
in partially saturated sand accounts only for about 30% of the increased lateral force
relative to that for dry conditions. The principal cause of increased resistance can be
explained with reference to Figure 17.16, which shows the soil deformation patterns in
dryandpartiallysaturatedsands.Drysanddeformationshowsdistinctzonesofheaveand
subsidence, with continuous rotational movement between well-developed passive and
