Liquefaction assessment of silty sands: Experimental characterization and numerical calibration

Stefania Gobbi; Maria Paola Santisi d'Avila; Luca Lenti; Jean François Semblat; Philippe Reiffsteck

doi:10.1016/j.soildyn.2022.107349

Liquefaction assessment of silty sands: Experimental characterization and numerical calibration

Stefania Gobbi
, Maria Paola Santisi d'Avila
, Luca Lenti
, Jean François Semblat
, Philippe Reiffsteck

Research output: Contribution to journal › Article › peer-review

Abstract

The main goal of this paper is to assess the reliability of a nonlinear hysteretic model to capture the behavior of saturated silty sand mixtures under cyclic loading conditions. The parameters governing the liquefaction triggering are identified using the results of standard laboratory tests (monotonic and cyclic consolidated undrained triaxial tests as well as resonant column tests) undertaken for reconstituted soil samples. Consequently, the uncertainty related with collected samples is reduced. The numerical results, obtained after calibration of the constitutive model, are in good agreement with the experimental ones and they are analyzed through the effects of relative density, fine content, and confining pressure in the liquefaction resistance of silty sands.

Original language	English
Article number	107349
Journal	Soil Dynamics and Earthquake Engineering
Volume	159
DOIs	https://doi.org/10.1016/j.soildyn.2022.107349
Publication status	Published - 1 Aug 2022

Keywords

3D Iwan Iai constitutive model
Cyclic liquefaction
Cyclic mobility
Cyclic triaxial test
Silty sand mixtures

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10.1016/j.soildyn.2022.107349

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title = "Liquefaction assessment of silty sands: Experimental characterization and numerical calibration",

abstract = "The main goal of this paper is to assess the reliability of a nonlinear hysteretic model to capture the behavior of saturated silty sand mixtures under cyclic loading conditions. The parameters governing the liquefaction triggering are identified using the results of standard laboratory tests (monotonic and cyclic consolidated undrained triaxial tests as well as resonant column tests) undertaken for reconstituted soil samples. Consequently, the uncertainty related with collected samples is reduced. The numerical results, obtained after calibration of the constitutive model, are in good agreement with the experimental ones and they are analyzed through the effects of relative density, fine content, and confining pressure in the liquefaction resistance of silty sands.",

keywords = "3D Iwan Iai constitutive model, Cyclic liquefaction, Cyclic mobility, Cyclic triaxial test, Silty sand mixtures",

author = "Stefania Gobbi and \{Santisi d'Avila\}, \{Maria Paola\} and Luca Lenti and Semblat, \{Jean Fran{\c c}ois\} and Philippe Reiffsteck",

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doi = "10.1016/j.soildyn.2022.107349",

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T1 - Liquefaction assessment of silty sands

T2 - Experimental characterization and numerical calibration

AU - Gobbi, Stefania

AU - Santisi d'Avila, Maria Paola

AU - Lenti, Luca

AU - Semblat, Jean François

AU - Reiffsteck, Philippe

PY - 2022/8/1

Y1 - 2022/8/1

N2 - The main goal of this paper is to assess the reliability of a nonlinear hysteretic model to capture the behavior of saturated silty sand mixtures under cyclic loading conditions. The parameters governing the liquefaction triggering are identified using the results of standard laboratory tests (monotonic and cyclic consolidated undrained triaxial tests as well as resonant column tests) undertaken for reconstituted soil samples. Consequently, the uncertainty related with collected samples is reduced. The numerical results, obtained after calibration of the constitutive model, are in good agreement with the experimental ones and they are analyzed through the effects of relative density, fine content, and confining pressure in the liquefaction resistance of silty sands.

AB - The main goal of this paper is to assess the reliability of a nonlinear hysteretic model to capture the behavior of saturated silty sand mixtures under cyclic loading conditions. The parameters governing the liquefaction triggering are identified using the results of standard laboratory tests (monotonic and cyclic consolidated undrained triaxial tests as well as resonant column tests) undertaken for reconstituted soil samples. Consequently, the uncertainty related with collected samples is reduced. The numerical results, obtained after calibration of the constitutive model, are in good agreement with the experimental ones and they are analyzed through the effects of relative density, fine content, and confining pressure in the liquefaction resistance of silty sands.

KW - 3D Iwan Iai constitutive model

KW - Cyclic liquefaction

KW - Cyclic mobility

KW - Cyclic triaxial test

KW - Silty sand mixtures

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DO - 10.1016/j.soildyn.2022.107349

M3 - Article

AN - SCOPUS:85130326792

SN - 0267-7261

VL - 159

JO - Soil Dynamics and Earthquake Engineering

JF - Soil Dynamics and Earthquake Engineering

M1 - 107349

ER -

Liquefaction assessment of silty sands: Experimental characterization and numerical calibration

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Keywords

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