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Author(s): António Viana da Fonseca
Fausto Molina Gomez
Cristiana Ferreira
Fernanda Campos de Sousa
Lenin Alexander Bulla-Cruz
Title: Defining the soil stratigraphy from seismic piezocone data: A clustering approach
Issue Date: 2021-03-24
Abstract: The geotechnical ground investigation involves several testing techniques. Within such techniques, the Piezocone Penetration Test with seismic wave measurements (SCPTu) is one of the most popular. This test is widely used for in situ soil characterisation given its continuous measurements and repeatability. The interpretation of such test results has a strong theoretical background, namely allowing the identification the soil profile based on correlation of mechanical properties. In turn, the application of multivariate statistical methods allows identifying the soil stratigraphy by data association. This paper proposes a multivariate statistical approach, based on cluster analysis, for defining stratigraphic interfaces from SCPTu measurements. Using an extensive database from the Lower Tagus Valley region (near Lisbon, Portugal), this novel approach combines the four SCPTu parameters and recognises the association between the measurements. A comparison between statistical results against the profiles of soil behaviour index validates the efficiency of the approach, indicating a good agreement between data associations with the soil behaviour index profiles. The findings showed that the statistical procedure proposed in this study leads to reliable results for identifying soils with similar soil behaviour type.
Subject: Geotecnia, Engenharia civil
Geotechnics, Civil engineering
Scientific areas: Ciências da engenharia e tecnologias::Engenharia civil
Engineering and technology::Civil engineering
Related Information: info:eu-repo/grantAgreement/FCT - Fundação para a Ciência e a Tecnologia/Projectos de I&DT em Todos os Domínios Científicos/PTDC/ECM-GEO/1780/2014/PROTOCOLOS PARA AVALIAÇÃO DE LIQUEFAÇÃO PARA PROTEÇÃO DE INFRA-ESTRUTURAS CRÍTICAS CONTRA DANOS INDUZIDOS POR SISMOS/LIQ2PROEARTH
Document Type: Artigo em Revista Científica Internacional
Rights: openAccess
Appears in Collections:FEUP - Artigo em Revista Científica Internacional

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