Numerical investigation of stone columns system for liquefaction and settlement diminution potential

Meshkinghalam, Haleh; Hajialilue-Bonab, Masoud; Azar, Ali Khoshravan

doi:10.1186/s40703-017-0047-x

Cited by 9 publications

(3 citation statements)

References 15 publications

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“…Various researchers [11][12][13] demonstrated the effectiveness and efficiency of using stone columns for soil stabilization, as this method can improve the strength properties and reduce consolidation settlements in soft soils. It also provides a much more cost-effective and sustainable alternative than piling and deep foundation solutions.…”

Section: Introductionmentioning

confidence: 99%

Settlement Analysis of a Sandy Clay Soil Reinforced with Stone Columns

Boru

Negesa

Scaringi

et al. 2022

Studia Geotechnica Et Mechanica

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Mat foundations are most typically used in locations featuring weak soils such as soft clays and silts, particularly when building in demanding geotechnical conditions. Because of their poor engineering characteristics and significant difficulties associated with workability, these soils are often removed or avoided by excavating down to a specific depth. However, if thick layers are present, their removal becomes unpractical, costly, and creates inconvenience during construction. To overcome this issue, various reinforcement strategies can be adopted. In this study, the use of stone columns under mat foundations was investigated via numerical modeling. Two scenarios were compared: one in which stone columns were installed without any soil removal and another in which a layer of soft ground was removed and the foundation was installed without any ground treatment. Numerical results showed the clear beneficial effect of stone columns, which can significantly reduce settlements even in the presence of a thick deformable soil layer.

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Section: Introductionmentioning

confidence: 99%

Settlement Analysis of a Sandy Clay Soil Reinforced with Stone Columns

Boru

Negesa

Scaringi

et al. 2022

Studia Geotechnica Et Mechanica

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“…Meshkinghalam vd. [7] taş kolonlarla ilgili yapmış oldukları çalışmada taş kolonların 2,5-3,5 m aralıklarla uygulanması durumunda kolonlarda burkulma oluşmadığı ve oturmaların azaldığı sonucunu elde etmişlerdir. Badanagki vd.…”

Section: Gi̇ri̇ş (Introduction)unclassified

Taş Kolon Performanslarının Hipoplastik Model ile Analizi

et al. 2021

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“…Consolidated Undrained Triaxial test under isotropic condition was conducted by Najjar et al [21] on clay specimen with single sand column having 44% relative density and area replacement ratio less than 18%. It was observed that young modulus increased due to reduction of express pore-water pressure during shearing Meshkinghalam et al [17] reported that the stone columns can be a significant ground improvement method for reduction of settlement and liquefaction of sandy soils. The group effect of the stone column was studied and concluded that the maximum performance of the stone column can be obtained with the center to center spacing between 2.5 and 3.5.…”

Section: Introductionmentioning

confidence: 99%

Laboratory and numerical based analysis of floating sand columns in clayey soil

et al. 2019

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The inclusion of sand columns results in enhancing the bearing capacity of clayey soil, increase the rate of consolidation, presentation of liquefaction in loose sandy soils and provide lateral resistance against the horizontal movement. This research aims at investigating the effects of floating columns in clayey soil with silty deposits by developing small scale laboratory models. The effects of sand columns on soils of different shear strengths, slenderness ratio (L/D) of columns were investigated. Group effect was also investigated by varying spacing between the columns. Experimental results were compared with the numerical analysis results. A 15-noded triangular mesh was generated using a finite element tool PLAXIS 2D. Finite element analysis was performed using Mohr's Coulomb's criterion considering undrained analysis for soft clayey soil and drained analysis for sand columns. It was concluded that the sand columns can significantly increase the ultimate loading capacity of soft soils. Results show that critical length for floating column ranges from 4 to 5.5 times the diameter of the column, beyond which bulging occurs and loading capacity decreased. The effect of group was also investigated and observed that with high spacing between the sand columns, the group efficiency decreased. The axial capacity of sand columns decreases while increasing spacing between the columns.

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Numerical investigation of stone columns system for liquefaction and settlement diminution potential

Cited by 9 publications

References 15 publications

Settlement Analysis of a Sandy Clay Soil Reinforced with Stone Columns

Settlement Analysis of a Sandy Clay Soil Reinforced with Stone Columns

Taş Kolon Performanslarının Hipoplastik Model ile Analizi

Laboratory and numerical based analysis of floating sand columns in clayey soil

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