Numerical modelin of floating prefabricated vertical drains in layered ...

I. IKHYA & H. F. SCHWEIGER: NUMERICAL MODELING OF FLOATING PREFABRICATED VERTICAL DRAINS IN LAYERED SOIL
Degree of Consolidation
Degree of Consolidation
Degree of Consolidation
Degree of Consolidation
Figure 9. Settlement curves for homogeneous and double drainage conditions for varying PVD penetration depth.
Figure 10. Settlement curves for two soil layers and double drainage conditions for varying PVD penetration depth.
32. ACTA GEOTECHNICA SLOVENICA, 2012/2
0
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
0.9
1
Model I (Homogeneous Layer & Double Drained)
1 10 100 1000 10000
Soil Layer I
=
Soil Layer II
E1&k1
Homogeneous
Layer
1 10
Model II-A (Double Drained)
100 1000 10000
0
0.1
0.2
0.3
L/H=1.0 (Full Penetration)
L/H=0.9
0.4
L/H=0.8
0.5
L/H=0.7
0.6 Soil Layer I
L/H=0.6
E1&k1
L/H=0.5
0.7
Without PVD
0.8
k2>k1
0.9
1
Soil Layer II
E1&k2
Time (days)
1 10
Model II-B (Double Drained)
100 1000 10000
0
0.1
0.2
0.3
L/H=1.0 (Full Penetration)
L/H=0.9
0.4
L/H=0.8
0.5
L/H=0.7
0.6 Soil Layer I
L/H=0.6
E1&k1
L/H=0.5
0.7
Without PVD
0.8
E2>E1
0.9
1
Soil Layer II
E2&k1
Time (days)
1 10
Model II-C (Double Drained)
100 1000 10000
0
0.1
0.2
0.3
L/H=1.0 (Full Penetration)
L/H=0.9
0.4
L/H=0.8
0.5
L/H=0.7
0.6 Soil Layer I
L/H=0.6
E1&k1
L/H=0.5
0.7
Without PVD
0.8
E2>E1 & k2>k1
0.9
1
Soil Layer II
E2&k2
Time (days)
Time (days)
Degree of Consolidation
Degree of Consolidation
Degree of Consolidation
L/H=1.0 (Full Penetration)
L/H=0.9
L/H=0.8
L/H=0.7
L/H=0.6
L/H=0.5
Without PVD
1 10
Model III-A (Double Drained)
100 1000 10000
0
0.1
0.2
0.3
L/H=1.0 (Full Penetration)
L/H=0.9
0.4
L/H=0.8
0.5
L/H=0.7
0.6 Soil Layer I
L/H=0.6
E1&k2
L/H=0.5
0.7
Without PVD
0.8
k2>k1
0.9
1
Soil Layer II
E1&k1
Time (days)
1 10
Model III-B (Double Drained)
100 1000 10000
0
0.1
0.2
0.3
L/H=1.0 (Full Penetration)
L/H=0.9
0.4
L/H=0.8
0.5
L/H=0.7
0.6 Soil Layer I
L/H=0.6
E2&k1
L/H=0.5
0.7
Without PVD
0.8
E2>E1
0.9
1
Soil Layer II
E1&k1
Time (days)
1 10
Model III-C (Double Drained)
100 1000 10000
0
0.1
0.2
0.3
L/H=1.0 (Full Penetration)
L/H=0.9
0.4
L/H=0.8
0.5
L/H=0.7
0.6 Soil Layer I
L/H=0.6
E2&k2
L/H=0.5
0.7
Without PVD
0.8
E2>E1 & k2>k1
0.9
1
Soil Layer II
E1&k1
Time (days)