Clay soil settlement: In-situ experimentation and analytical approach

Bensallam, Saad; Bahi, Lahcen; Ejjaaouani, Houssine; Shakhirev, Vladimir; Chaham, Khalid Rkha

doi:10.1016/j.sandf.2014.02.003

Cited by 7 publications

(2 citation statements)

References 6 publications

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“…Les problèmes dus aux mouvements des terrains suite à des cycles de retrait-gonflement, reconnues comme un risque naturel coûteux, sont présents partout dans le monde [29], l'abondance de ce sol expansif à l'échelle mondiale a généré trop d'efforts pour mieux comprendre leur comportement [30][31] et d'éviter toutes catastrophes qui peuvent survenir [32]. Ils sont associés à des situations déficientes en eau et dépend d'un ensemble de propriétés mécaniques et physicochimiques des matériaux [33,34,35]. C'est l'une des causes géotechniques les plus courantes [36], et qui a pour conséquence une modification des propriétés physiques du sol entraînant des mouvements de terrain de subsidence et de retrait-gonflement [37].…”

Section: Cmss-2017unclassified

Study of the degradation of the geometry of the railway between the pk 80 and 105 at the plateau of Settat (Morocco)

et al. 2018

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Abstract. The plateau of Settat is formed by Paleozoic age formations surmounted by a subhorizontal cover made up mainly of Cretaceous sedimentary rocks formed of limestones, sandstones and clays with alternating marly limestones and marls. The study area is characterized by a dry to semi-dry climate, an endorheic hydrographic network that flows into the plain, and is affected by a hydraulic fracturing network of WNW-ESE and NE-SW directions. These factors cause repetitive and cyclical disturbances and disorders recorded on the railway section between Settat and Machraa Ben Abbou and are due to the shrinkage-swelling of the clay formations. The statistical and critical analysis of the defects identified by the device of measuring the geometric parameters of the railway, coupled with an exploitation of the Optical and Radar satellite images, made it possible to refine the geological, hydrological and structural study of the plain studied. These approaches have shown that this hazard has been favored by the existence of recent clayey and swelling formations under the influence by the climatic, hydrological and geological contrasts marked by intense hydraulic fracturing of the zone.

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Section: Cmss-2017unclassified

Study of the degradation of the geometry of the railway between the pk 80 and 105 at the plateau of Settat (Morocco)

et al. 2018

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“…Pile settlement and bearing capacity in clays depend on the bearing capacity in the tip and the lateral friction. The settlement of single driven pile in soft clay is described by analytical and numerical solutions and is directly related to the dissipation of excess pore water pressure caused by pile driving [1][2][3]. According to Lehane & Jardine 1994 when the pile rests on hard clay, it is assumed that the total load acts at the pile tip, i.e.…”

Section: Introductionmentioning

confidence: 99%

Effect of clay compaction around driven pile and prediction of pile settlement

Ponomaryov

Sychkina

2022

E3S Web Conf.

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In the article the problem of geotechnical application of clay nd claystone as a base of driven pile foundations has been considered. When using these foundations, a compaction zone is formed in the clay space around the pile. The purpose of this research is to analyze the influence of compaction zones on the results of analytical and numerical calculations for predicting the settlement of a driven pile in layered clay soils. The following tasks were solved: 1) The existing investigations of pile settlement in layered clay soils were analyzed; 2) The characteristics of experimental sites and the parameters of numerical modeling were, methods for testing single field piles in layered clay soils were described; 3) Calculation of single pile settlement was performed carried out by numerical methods with the use of Plaxis 2D software package and by an analytical method; 4) The experimental data were compared with the results of calculations by analytical and numerical methods. The developed calculation scheme with two compaction zones around driven piles can provides reasonable estimates of vertical displacements of the clay base. Based on the results obtained, the authors recommend using the analytical method with due regard for compaction zones in clays and claystones around the driven pile.

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