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The Role of Spatial Distribution of Geotechnical Soil Parameters in Site Investigation

Tatiana Olinic

Tatiana Olinic

Department of Environmental Engineering and Land Reclamation, University of Agronomic Sciences and Veterinary MedicineBucharest, Romania
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Olinic, Tatiana
, 
Ernest-Daniel Olinic

Ernest-Daniel Olinic

Department of Geotechnical and Foundation Engineering, Technical University of Civil EngineeringBucharest,
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Olinic, Ernest-Daniel
, 
Ioan Boți

Ioan Boți

Department of Geotechnical and Foundation Engineering, Technical University of Civil EngineeringBucharest,
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Boți, Ioan
 e 
Ionuț-Alexandru Ciocaniu

Ionuț-Alexandru Ciocaniu

Department of Geotechnical and Foundation Engineering, Technical University of Civil EngineeringBucharest,
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Ciocaniu, Ionuț-Alexandru
  
18 lug 2024
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Categoria dell'articolo: Original Study
Pubblicato online: 18 lug 2024
Pagine: 230 - 243
Ricevuto: 10 apr 2024
Accettato: 10 giu 2024
DOI: https://doi.org/10.2478/sgem-2024-0016
Parole chiave
© 2024 Tatiana Olinic et al., published by Sciendo
This work is licensed under the Creative Commons Attribution 4.0 International License.

Figure 1:

The studied site and the positions of the geotechnical investigations (source: Google Earth).
The studied site and the positions of the geotechnical investigations (source: Google Earth).

Figure 2:

Variation of physical parameters with depth.
Variation of physical parameters with depth.

Figure 3:

Variation of physical geotechnical parameters with depth.
Variation of physical geotechnical parameters with depth.

Figure 4:

Variation of physical geotechnical parameters with depth.
Variation of physical geotechnical parameters with depth.

Figure 5:

Variation of oedometric modulus, Eoed200–300 (kPa), with depth.
Variation of oedometric modulus, Eoed200–300 (kPa), with depth.

Figure 6:

Variation of shear strength parameters with depth.
Variation of shear strength parameters with depth.

Figure 7:

Spatial (2D) variation of physical geotechnical parameters with depth.
Spatial (2D) variation of physical geotechnical parameters with depth.

Figure 8:

Spatial (2D) variation of consistency index (IC, -) with depth.
Spatial (2D) variation of consistency index (IC, -) with depth.

Figure 9:

Spatial (2D) variation of percentage of clay (top), silt (middle), and sand (bottom) with depth.
Spatial (2D) variation of percentage of clay (top), silt (middle), and sand (bottom) with depth.

Figure 10:

Spatial (2D) variation of mechanical parameters with depth.
Spatial (2D) variation of mechanical parameters with depth.

Figure 11:

Geotechnical cross section.
Geotechnical cross section.

Recommended maximum values of the coefficient of variation (Vxmax) for the division into geological layers [8]_

Geotechnical parameter Vx max
Unit weight, γ (kN/m3) 0.05

Moisture content, w (%)

Consistency index, IC

Porosity index, e

Degree of compaction, ID (%)

 0.15
Plasticity index, IP (%) 0.30

Example of uniform distribution of measured values confirmed as being part of the same geotechnical layer_

Measured values of consistency index, Ic (-) 0.484
0.488 0.512
0.495 0.522 0.540
0.507 0.538 0.557 0.568
0.531 0.566 0.582 0.591 0.597
0.625 0.625 0.625 0.625 0.625
0.719 0.684 0.668 0.659 0.653
0.743 0.712 0.693 0.682
0.755 0.728 0.710
0.762 0.738
0.766
Minimum values, Xmin 0.531 0.507 0.495 0.488 0.484
Maximum values, Xmax 0.719 0.743 0.755 0.762 0.766
Average values, Xm 0.625 0.625 0.625 0.625 0.625
Number of selected values, n 3 5 7 9 11
Standard deviation, sx 0.094 0.094 0.094 0.094 0.094
Coefficient of variation, Vx 0.15 0.15 0.15 0.15 0.15
kn for Vx unknown 1.69 0.96 0.73 0.61 0.54
Xk sup = Xm(1 + kn Vx unknown) 0.78 0.71 0.69 0.68 0.68
Xk inf = Xm(1 - kn Vx unknown) 0.47 0.54 0.56 0.57 0.57
Lingua:
Inglese
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Geoscienze, Geoscienze, altro, Scienze materiali, Compositi, Materiali porovati, Fisica, Meccanica e dinamica dei fluidi
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