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Settlement Analysis of a Sandy Clay Soil Reinforced with Stone Columns

Yada Tesfaye Boru

Yada Tesfaye Boru

Faculty of Civil and Environmental Engineering, Jimma Institute of Technology, Jimma University, Faculty of Civil Engineering, Wrocław University of Science and TechnologyWrocław,
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Boru, Yada Tesfaye
, 
Adamu Beyene Negesa

Adamu Beyene Negesa

Faculty of Civil and Environmental Engineering, Jimma Institute of Technology, Jimma UniversityEthiopia
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Negesa, Adamu Beyene
, 
Gianvito Scaringi

Gianvito Scaringi

Institute of Hydrogeology, Engineering Geology and Applied Geophysics, Faculty of Science, Charles UniversityCzech Republic
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Scaringi, Gianvito
 et 
Wojciech Puła

Wojciech Puła

Faculty of Civil Engineering, Wrocław University of Science and TechnologyWrocław, Poland
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Puła, Wojciech
  
06 nov. 2022
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Catégorie d'article: Original Study
Publié en ligne: 06 nov. 2022
Pages: 333 - 342
Reçu: 22 avr. 2022
Accepté: 01 sept. 2022
DOI: https://doi.org/10.2478/sgem-2022-0020
Mots clés
© 2022 Yada Tesfaye Boru et al., published by Sciendo
This work is licensed under the Creative Commons Attribution 4.0 International License.

Figure 1

Geometry and boundary conditions for scenario 1 (a) and scenario 2 (b).
Geometry and boundary conditions for scenario 1 (a) and scenario 2 (b).

Figure 2

Vertical settlements evaluated for scenarios 1 (a) and 2 (b).
Vertical settlements evaluated for scenarios 1 (a) and 2 (b).

Figure 3

Vertical settlement below the center of the foundation footing and at the tip of the stone column.
Vertical settlement below the center of the foundation footing and at the tip of the stone column.

Figure 4

Effect of stone column spacing (S, taken as interaxial distance) on vertical settlements as a function of depth.
Effect of stone column spacing (S, taken as interaxial distance) on vertical settlements as a function of depth.

Figure 5

Effect of stone column diameter (D) on vertical settlements as a function of depth.
Effect of stone column diameter (D) on vertical settlements as a function of depth.

Figure 6

Effect of stone column length (L) on vertical settlement.
Effect of stone column length (L) on vertical settlement.

Figure 7

Effect of stone column optimal design parameters on settlement.
Effect of stone column optimal design parameters on settlement.

Material properties used in the model_

Material properties Symbol Unit Soft clay Stone columns Gravel filling
Initial void ratio eo - 0.7 0.8 0.6
Unit weight γ kN/m3 16 22.5 18
Overconsolidation ratio OCR - 1 1 1
Lateral earth pressure coefficient at rest Ko - 1 0.2175 0.1473
Poisson's ratio v - 0.4 0.18 0.25
Stiffness modulus for unloading/reloading Eur MPa 13.02 210 180
Stiffness modulus for primary loading E50 MPa 1.86 90 35
Oedometric modulus Eoed MPa 5.56 60 45
Power for stress-level dependency m - 0.5 0.6 0.6
Cohesion c kPa 40 4 7
Friction angle ∅ ° 5 48 40
Dilation angle ψ ° 0 18 10
Failure ratio Rf - 0.9 0.9 0.9
Layer thickness z m 30 10 1
Langue:
Anglais
Périodicité:
4 fois par an
Sujets de la revue:
Géosciences, Géosciences, autres, Sciences des matériaux, Matériaux composites, Matériaux poreux, Physique, Mécanique et dynamique des fluides
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