Numerical Analysis of Elastoplastic Behavior of Stone Column Foundation

Six, V.; Mroueh, Hussein; Shahrour, Isam; Bouassida, Mounir

doi:10.1007/s10706-012-9500-y

Cited by 18 publications

(6 citation statements)

References 5 publications

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“…The properties of the granular materials, presented in Table 2, are based on soil tests, on the authors' experience (Almeida et al, 2014a(Almeida et al, , 2014b(Almeida et al, , 2018 and on recommendations in the literature (Castro and Sagaseta, 2009;Six et al, 2012). The shear strength parameters and the Young modulus adopted for the stone column were determined from triaxial tests (Gebrenegus et al, 2015) for the AASHTO Nº 6 grain size distribution corresponding to crushed stone N o 2 ( ABNT NBR 7211:2009.…”

Section: Soil Parameters Used In the Analytical And Numerical Studiesmentioning

confidence: 99%

Embankment Supported by Low Area Replacement Ratio Stone Columns, Monitoring and Numerical Studies

Almeida

Vasconcelos

et al. 2022

KSCE Journal of Civil Engineering

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Section: Soil Parameters Used In the Analytical And Numerical Studiesmentioning

confidence: 99%

Embankment Supported by Low Area Replacement Ratio Stone Columns, Monitoring and Numerical Studies

Almeida

Vasconcelos

et al. 2022

KSCE Journal of Civil Engineering

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“…Additionally, the earth pressure's influence in the performance of a stone column can be labelled as 0 K . In [52], a study has been done using numerical and analytical methods to extract the 0 K value. The parameters of CSV materials are shown in (Tabs.…”

Section: Numerical Modelingmentioning

confidence: 99%

Reinforced Soft Soil by CSV with/without Polypropylene fibres: Experimental and Numerical analysis.

Souadeuk

Boudaoud

2021

Frattura Ed Integrità Strutturale

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Columns of mixed soil-sand-cement (CSV), is one of the most unknown used methods for soft soil stabilization that has not been studied before. To this end, in this paper, consolidated drained (CD) triaxial compression tests after have been cured for 28 days, were carried out to investigate the effectiveness of CSV, which is mainly used to reinforce soft soil. Then, the influence of soft soil content (25%, 50%, 75%) on materials of CSV with/without polypropylene (PP) fibers is established. The percentages of soft soils (50%, 75%) are experimentally doable and the remaining percentage (25%) was not successfully experimented; for this exact reason, an empirical formula is established based on the design of experiments (DOE) for calculating the soft soil’s characteristics. Then a numerical study using PLAXIS 3D is developed for studying the embankment building on soil which is reinforced by CSV. It is found that the efficacy of the reinforcement of the soft soil by CSV with/without PP fibers provides with satisfying results. Moreover, the less amount of soft soil on CSV materials the better for deviatoric stress, axial strain, the effective cohesion, the effective friction angle and modulus of elasticity E50. Additionally, when PP fibers is added to CSV material, experimental results were strongly affected. As far as the numerical study, the embankment building on the soil that is reinforced by the CSV shows an improvement in the level of displacement in the three directions, the total displacement and security factor. The variation of materials of CSV content with/without PP fibers, a diverse combination with a relatively lower effect can be easily remarked on the achieved results.

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“…Stone columns are widely used to improve the foundations of many structures. Various designs of stone column are based on the axisymmetric unit cell model, in which one stone column and its equivalent circular influence zone are modeled (Priebe, 1976; Balaam and Booker, 1981; Van Impe and Madhav, 1992; Han and Ye, 2001; Tan et al , 2008; Six et al , 2012; Sexton et al , 2013; Ng and Tan, 2014; Ng and Tan, 2015; Mohanty and Samanta, 2015; Tabchouche et al , 2017; Gaber et al , 2018; Hadri et al , 2021).…”

Section: Introductionmentioning

confidence: 99%

Experimental and numerical study of the settlement behavior of soil reinforced by stone columns

Hadri

Bekkouche

Messast

2023

WJE

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Purpose The paper aims to present an experimental and numerical investigation of the load–settlement behavior of soil reinforced by stone column, as well as to evaluate the plane strain unit cell model for the analysis of stone columns. Design/methodology/approach The numerical analysis was done using both axisymmetric and plane strain models. The elastic perfectly plastic behavior of Mohr–Coulomb was adopted for both soil and column material. The numerical results of this study were validated by the comparison with the in-situ measurements of a full-scale loading test on a stone column. This study also evaluated the effect of different parameters involved in the design of a stone column, including Young’s modulus of the column material, column diameter, spacing between the stone columns and Poisson’s ratio of the column material. Findings After the numerical simulation, the results from both axisymmetric and plane strain models are quite comparable. In addition, the numerical results revealed that the stone column with low spacing, a large diameter and a high Young’s modulus indicated better behavior against the settlement. Originality/value The axisymmetric unit cell model was used in many numerical studies on the behavior of stone columns. In the present work, a field load test on stone column was simulated using a plane strain unit cell model. This research adds that the plane strain unit cell model can be used to predict the settlement of reinforced soil with stone columns.

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Numerical Analysis of Elastoplastic Behavior of Stone Column Foundation

Cited by 18 publications

References 5 publications

Embankment Supported by Low Area Replacement Ratio Stone Columns, Monitoring and Numerical Studies

Embankment Supported by Low Area Replacement Ratio Stone Columns, Monitoring and Numerical Studies

Reinforced Soft Soil by CSV with/without Polypropylene fibres: Experimental and Numerical analysis.

Experimental and numerical study of the settlement behavior of soil reinforced by stone columns

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