Stabilization Methodology in Foundation Soils by ERT-3D Application in Estepona, South Spain

The paper proposes a novel methodology for the stabilization of shallow foundations, with a simplified model combined with 3D electrical resistivity tomography (ERT-3D and consolidation injections. To determine its usefulness, the method has been applied in a case located in Estepona (southern Spain...

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Main Authors: Alfonso Gutiérrez-Martín, José I. Yenes, Marta Fernández-Hernández, Ricardo Castedo
Format: Article
Language:English
Published: MDPI AG 2021-05-01
Series:Applied Sciences
Subjects:
Online Access:https://www.mdpi.com/2076-3417/11/10/4455
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spelling doaj-fd3523fe188e4620952c69fe13262e5b2021-05-31T23:59:26ZengMDPI AGApplied Sciences2076-34172021-05-01114455445510.3390/app11104455Stabilization Methodology in Foundation Soils by ERT-3D Application in Estepona, South SpainAlfonso Gutiérrez-Martín0José I. Yenes1Marta Fernández-Hernández2Ricardo Castedo3Escuela Técnica Superior de Arquitectura-Universidad de Málaga, 29071 Málaga, SpainEscuela Politécnica Superior del Ejército, (ESPOL), 28002 Madrid, SpainInstituto Geológico y Minero de España-IGME, 28003 Madrid, SpainETSI Minas y Energía, Universidad Politécnica de Madrid, 28003 Madrid, SpainThe paper proposes a novel methodology for the stabilization of shallow foundations, with a simplified model combined with 3D electrical resistivity tomography (ERT-3D and consolidation injections. To determine its usefulness, the method has been applied in a case located in Estepona (southern Spain). The chosen tomography model is the dipole–dipole configuration, with an optimized distance between electrodes of 0.80 m for a better visualization of the foundation subsoil; with this parameterization, a total of 72 electrodes were installed in the analyzed case. In this work, the depth of the anomaly in the building’s supporting subsoil was detected ranging from 2.00 m to 3.90 m deep. The study also delineates areas of high resistivity variations (50–1000 Ω m) in the middle and eastern end of the field. These data have been validated and corroborated with a field campaign. The results of the ERT-3D monitoring are presented, once the investment data has been processed with the RES3DINV software, from the beginning to the end of the stabilization intervention. The novelty occurs with the interaction between the tomography and the foundation consolidation injections, until the final stabilization. This is a very useful methodology in case of emergency consolidation, where there is a need to minimize damage to the building. Thus, people using this combined system will be able to practically solve the initial anomalies of the subsoil that caused the damages, in a non-invasive way, considerably lowering the value of the resistivities.https://www.mdpi.com/2076-3417/11/10/4455electric tomographythree-dimensionalelectrodesseat controlfoundationsstabilization methodology
collection DOAJ
language English
format Article
sources DOAJ
author Alfonso Gutiérrez-Martín
José I. Yenes
Marta Fernández-Hernández
Ricardo Castedo
spellingShingle Alfonso Gutiérrez-Martín
José I. Yenes
Marta Fernández-Hernández
Ricardo Castedo
Stabilization Methodology in Foundation Soils by ERT-3D Application in Estepona, South Spain
Applied Sciences
electric tomography
three-dimensional
electrodes
seat control
foundations
stabilization methodology
author_facet Alfonso Gutiérrez-Martín
José I. Yenes
Marta Fernández-Hernández
Ricardo Castedo
author_sort Alfonso Gutiérrez-Martín
title Stabilization Methodology in Foundation Soils by ERT-3D Application in Estepona, South Spain
title_short Stabilization Methodology in Foundation Soils by ERT-3D Application in Estepona, South Spain
title_full Stabilization Methodology in Foundation Soils by ERT-3D Application in Estepona, South Spain
title_fullStr Stabilization Methodology in Foundation Soils by ERT-3D Application in Estepona, South Spain
title_full_unstemmed Stabilization Methodology in Foundation Soils by ERT-3D Application in Estepona, South Spain
title_sort stabilization methodology in foundation soils by ert-3d application in estepona, south spain
publisher MDPI AG
series Applied Sciences
issn 2076-3417
publishDate 2021-05-01
description The paper proposes a novel methodology for the stabilization of shallow foundations, with a simplified model combined with 3D electrical resistivity tomography (ERT-3D and consolidation injections. To determine its usefulness, the method has been applied in a case located in Estepona (southern Spain). The chosen tomography model is the dipole–dipole configuration, with an optimized distance between electrodes of 0.80 m for a better visualization of the foundation subsoil; with this parameterization, a total of 72 electrodes were installed in the analyzed case. In this work, the depth of the anomaly in the building’s supporting subsoil was detected ranging from 2.00 m to 3.90 m deep. The study also delineates areas of high resistivity variations (50–1000 Ω m) in the middle and eastern end of the field. These data have been validated and corroborated with a field campaign. The results of the ERT-3D monitoring are presented, once the investment data has been processed with the RES3DINV software, from the beginning to the end of the stabilization intervention. The novelty occurs with the interaction between the tomography and the foundation consolidation injections, until the final stabilization. This is a very useful methodology in case of emergency consolidation, where there is a need to minimize damage to the building. Thus, people using this combined system will be able to practically solve the initial anomalies of the subsoil that caused the damages, in a non-invasive way, considerably lowering the value of the resistivities.
topic electric tomography
three-dimensional
electrodes
seat control
foundations
stabilization methodology
url https://www.mdpi.com/2076-3417/11/10/4455
work_keys_str_mv AT alfonsogutierrezmartin stabilizationmethodologyinfoundationsoilsbyert3dapplicationinesteponasouthspain
AT joseiyenes stabilizationmethodologyinfoundationsoilsbyert3dapplicationinesteponasouthspain
AT martafernandezhernandez stabilizationmethodologyinfoundationsoilsbyert3dapplicationinesteponasouthspain
AT ricardocastedo stabilizationmethodologyinfoundationsoilsbyert3dapplicationinesteponasouthspain
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