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Arabian Journal for Science and Engineering
Erschienen in: Arabian Journal for Science and Engineering 5/2020

02.01.2020 | Research Article - Civil Engineering

Behavior of Geotextile-Encased Single Stone Column in Soft Soils

verfasst von: Rowad Esameldin Farah, Zalihe Nalbantoglu

Erschienen in: Arabian Journal for Science and Engineering | Ausgabe 5/2020

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Abstract

Stone columns have become a widely used method of increasing bearing capacity of soft soils. This study investigates floating stone columns with and without encasement in soft soils. Although the stone columns in single-layered soil have been studied extensively, stone columns constructed in a base of varying soil layers are not fully understood. In the present study, the behavior of both single-layered soft soil and layered soil consisting of loose sand overlaying the soft soil was investigated by using small-scale laboratory pilot tests. The bearing capacity of soft soil was improved in all cases of stone column application. The contribution of stone columns on the bearing capacity of soft soil was presented by the term bearing improvement ratio (BIR). With a non-encased stone column in single-layered soft soil, the BIR was about 3.3-fold and with geotextile encasement in the same soil, the improvement ratio increased to 3.4-fold. For a non-encased stone column in layered soils, the BIR was about 2.0-fold and with geotextile enhancement in the same soil, this improvement ratio increased to 4.0-fold. The inclusion of geotextiles resulted in improved bearing capacity by distributing the induced stresses over larger areas. The maximum bulging of non-encased stone column in single-layered soft soil was observed at the depth of 1.5 times the original diameter of the stone column from the top, whereas for encased stone column in single-layered soft soil, the maximum bulging was transferred to a depth of 3.0 times the original diameter of the stone column.
Vorheriger Artikel Study on Dynamic Mechanical Properties and Meso-Deterioration Mechanism of Sandstone Under Cyclic Impact Load
Nächster Artikel Characterization of Sugarcane Bagasse Ash as Pozzolan and Influence on Concrete Properties

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Metadaten
Titel
Behavior of Geotextile-Encased Single Stone Column in Soft Soils
verfasst von
Rowad Esameldin Farah
Zalihe Nalbantoglu
Publikationsdatum
02.01.2020
Verlag
Springer Berlin Heidelberg
Erschienen in
Arabian Journal for Science and Engineering / Ausgabe 5/2020
Print ISSN: 2193-567X
Elektronische ISSN: 2191-4281
DOI
https://doi.org/10.1007/s13369-019-04299-3

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