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A platform for research: civil engineering, architecture and urbanism
Granular Columns Reinforced with Geosynthetics: An Overview of Employment Trends
Granular columns are vertical structural elements of dense interlocking aggregate or compacted sand, that are intended to increase the foundation overall bearing capacity and provide vertical drainage pathways to expedite the consolidation settlement. They are recognized as highly efficient and cost-effective ground improvement techniques. However the rigidity and load carrying capacity of the columns depend largely upon the amount of lateral restraint or confining stress that can be mobilized in the surrounding soft clay to avoid excessive radial deformation or even to keep the column's integrity. This additional restrain required could be provided by encapsulating the column granular backfilling in a geotextile wrapping, a technique that is referred to as geotextile-encased columns (or just GEC). The GEC represent the most wide-spread technique for improving poor ground using granular columns reinforced with geosynthetics, however other possibilities have been published, which can slightly or strongly differs from the current concept. According to some authors the reinforcement of a granular column can be also achieved by horizontal tensile elements (geosynthetic layers) either in full or partial column length, or by partial encasement of the upper column section that is prone to bulge. Another variation closely related to the conventional GEC technique is to encapsulate columns with geogrids or geocomposites. Hence, the aim of this paper is to present a broad review and a comparative analysis of the techniques proposed to reinforce granular columns with geosynthetics over the last 30 years, discussing the advantages and the feasibility of each method.
Granular Columns Reinforced with Geosynthetics: An Overview of Employment Trends
Granular columns are vertical structural elements of dense interlocking aggregate or compacted sand, that are intended to increase the foundation overall bearing capacity and provide vertical drainage pathways to expedite the consolidation settlement. They are recognized as highly efficient and cost-effective ground improvement techniques. However the rigidity and load carrying capacity of the columns depend largely upon the amount of lateral restraint or confining stress that can be mobilized in the surrounding soft clay to avoid excessive radial deformation or even to keep the column's integrity. This additional restrain required could be provided by encapsulating the column granular backfilling in a geotextile wrapping, a technique that is referred to as geotextile-encased columns (or just GEC). The GEC represent the most wide-spread technique for improving poor ground using granular columns reinforced with geosynthetics, however other possibilities have been published, which can slightly or strongly differs from the current concept. According to some authors the reinforcement of a granular column can be also achieved by horizontal tensile elements (geosynthetic layers) either in full or partial column length, or by partial encasement of the upper column section that is prone to bulge. Another variation closely related to the conventional GEC technique is to encapsulate columns with geogrids or geocomposites. Hence, the aim of this paper is to present a broad review and a comparative analysis of the techniques proposed to reinforce granular columns with geosynthetics over the last 30 years, discussing the advantages and the feasibility of each method.
Granular Columns Reinforced with Geosynthetics: An Overview of Employment Trends
Santos, C.T. (author) / Vidal, D.M. (author) / Queiroz, P.I.B. (author)
2013
10 Seiten, Bilder, Quellen
Conference paper
Storage medium
English
Granular Piles Reinforced with Geosynthetics
| British Library Conference Proceedings | 1994
| Springer Verlag | 2020
| British Library Conference Proceedings | 1991
| Tema Archive | 2014