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Author(s): José Leitão Borges
Marco Silva Gonçalves
Title: Jet-grout column-reinforced soft soils incorporating multilayer geosynthetic-reinforced platforms
Issue Date: 2016
Abstract: Geosynthetic-reinforced load transfer platforms are commonly used in constructions over column-reinforced soft soils and correspond tomodifications of conventional granular load transfer platforms that utilise only the arching effect of the granular soil to transfer the loads onto thecolumns. Both a single geosynthetic layer and several geosynthetic layers can be used to reinforce the granular soil of a platform. Most of thestudies published in the literature address the use of single geosynthetic-reinforced platforms, while there is a lack of studies on multilayergeosynthetic-reinforced platforms. In the present study, to help overcome that lack, a jet-grout column-reinforced soft soil foundation with aplatform that incorporates five geosynthetic layers is analysed. A parametric study is also performed in order to analyse the influence of four keyfactors. A numerical code based on the finite element method is used, incorporating a fully coupled analysis and soil constitutive relationssimulated by the p-q-θ critical state model. The study mainly shows that a larger number of geosynthetic layers within the platform brings aboutbetter geotechnical behaviour of the column-reinforced soft soil foundation in terms of the settlement and the load transfer onto the columns.
Subject: Engenharia civil, Engenharia civil
Civil engineering, Civil engineering
Scientific areas: Ciências da engenharia e tecnologias::Engenharia civil
Engineering and technology::Civil engineering
Document Type: Artigo em Revista Científica Internacional
Rights: restrictedAccess
Appears in Collections:FEUP - Artigo em Revista Científica Internacional

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