Effect of soil permeability on CPTu test results in structured clay soils

TY - GEN

T1 - Effect of soil permeability on CPTu test results in structured clay soils

AU - Oliynyk, Kateryna

AU - Ciantia, Matteo Oryem

AU - Tamagnini, Claudio

N1 - © 2023, The Author(s), under exclusive license to Springer Nature Switzerland AG.

PY - 2023

Y1 - 2023

N2 - The PFEM implementation of fully coupled equations governing the solid skeleton deformations and pore fluid flow in porous saturated media is used to investigate the effects of soil permeability on cone tip resistance and excess pore pressure measurements in CPTu tests performed in a structured soil deposit. In the simulations, soil behavior is modeled with the FD_Milan model, a finite deformation version of the isotropic hardening model for structured soil originally developed at the Politecnico of Milano by Nova and coworkers. The results indicate that as soil permeability increases, the volumetric deformations around the cone tip become non negligible and the excess pore pressure in correspondence of the cone probes is also affected. The destructuration process caused by the intense deformations around the cone tip and along the shaft is responsible for a significant reduction of the expected net cone resistance based on the apparent value of the soil undrained strength.

AB - The PFEM implementation of fully coupled equations governing the solid skeleton deformations and pore fluid flow in porous saturated media is used to investigate the effects of soil permeability on cone tip resistance and excess pore pressure measurements in CPTu tests performed in a structured soil deposit. In the simulations, soil behavior is modeled with the FD_Milan model, a finite deformation version of the isotropic hardening model for structured soil originally developed at the Politecnico of Milano by Nova and coworkers. The results indicate that as soil permeability increases, the volumetric deformations around the cone tip become non negligible and the excess pore pressure in correspondence of the cone probes is also affected. The destructuration process caused by the intense deformations around the cone tip and along the shaft is responsible for a significant reduction of the expected net cone resistance based on the apparent value of the soil undrained strength.

KW - CPTu Testing

KW - Finite Deformations

KW - PFEM Modeling

KW - Structured Clays

UR - https://www.scopus.com/pages/publications/85164691533

U2 - 10.1007/978-3-031-34761-0_56

DO - 10.1007/978-3-031-34761-0_56

M3 - Conference contribution

AN - SCOPUS:85164691533

SN - 9783031347603

SN - 9783031347634

T3 - Springer Series in Geomechanics and Geoengineering

SP - 460

EP - 467

BT - Geotechnical Engineering in the Digital and Technological Innovation Era

A2 - Ferrari, Alessio

A2 - Rosone, Marco

A2 - Ziccarelli, Maurizio

A2 - Gottardi, Guido

PB - Springer

T2 - VIII Convegno Nazionale dei Ricercatori di Ingegneria Geotecnica

Y2 - 5 July 2023 through 7 July 2023

ER -