Estimating poromechanical properties using a nonlinear poroelastic model

Kuo-Chin Hsu, Shih Jung Wang, Chein-Lee Wang

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

A physics-based method is proposed for simultaneously obtaining the hydraulic conductivity, Young's modulus, and Poisson's ratio of soil materials using the uniaxial consolidation test. A nonlinear poroelastic model is presented, and the settlement data from consolidation tests are fitted to the model at each load step with the least-squares error method to inverse the parameters. The model results perfectly fit the experimental data in the initial load steps but slightly deviate from the data in later load steps as a result of secondary settlement and a largely increased Young's modulus. The inversed parameters are compared with those calculated from the uniaxial consolidation test and those found in the literature. The comparison results demonstrate that the inversed parameters are reasonable. The proposed method provides both an estimation of parameters and the parameter-change information during a consolidation test. The method is simple, efficient, and versatile for obtaining poromechanical parameters with the uniaxial consolidation test. These parameters are useful for groundwater, geomechanical, and mining engineering.

Original languageEnglish
Pages (from-to)1396-1401
Number of pages6
JournalJournal of Geotechnical and Geoenvironmental Engineering
Volume139
Issue number8
DOIs
Publication statusPublished - 2013 Aug 13

Fingerprint

Consolidation
consolidation
Young modulus
Elastic moduli
Mining engineering
Hydraulic conductivity
Poisson ratio
Groundwater
Physics
parameter
Soils
hydraulic conductivity
physics
test
groundwater
method
soil

All Science Journal Classification (ASJC) codes

  • Environmental Science(all)
  • Geotechnical Engineering and Engineering Geology

Cite this

@article{fd7c62a7eb72427e95dee5efa9f82e09,
title = "Estimating poromechanical properties using a nonlinear poroelastic model",
abstract = "A physics-based method is proposed for simultaneously obtaining the hydraulic conductivity, Young's modulus, and Poisson's ratio of soil materials using the uniaxial consolidation test. A nonlinear poroelastic model is presented, and the settlement data from consolidation tests are fitted to the model at each load step with the least-squares error method to inverse the parameters. The model results perfectly fit the experimental data in the initial load steps but slightly deviate from the data in later load steps as a result of secondary settlement and a largely increased Young's modulus. The inversed parameters are compared with those calculated from the uniaxial consolidation test and those found in the literature. The comparison results demonstrate that the inversed parameters are reasonable. The proposed method provides both an estimation of parameters and the parameter-change information during a consolidation test. The method is simple, efficient, and versatile for obtaining poromechanical parameters with the uniaxial consolidation test. These parameters are useful for groundwater, geomechanical, and mining engineering.",
author = "Kuo-Chin Hsu and Wang, {Shih Jung} and Chein-Lee Wang",
year = "2013",
month = "8",
day = "13",
doi = "10.1061/(ASCE)GT.1943-5606.0000862",
language = "English",
volume = "139",
pages = "1396--1401",
journal = "Journal of Geotechnical and Geoenvironmental Engineering - ASCE",
issn = "1090-0241",
publisher = "American Society of Civil Engineers (ASCE)",
number = "8",

}

Estimating poromechanical properties using a nonlinear poroelastic model. / Hsu, Kuo-Chin; Wang, Shih Jung; Wang, Chein-Lee.

In: Journal of Geotechnical and Geoenvironmental Engineering, Vol. 139, No. 8, 13.08.2013, p. 1396-1401.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Estimating poromechanical properties using a nonlinear poroelastic model

AU - Hsu, Kuo-Chin

AU - Wang, Shih Jung

AU - Wang, Chein-Lee

PY - 2013/8/13

Y1 - 2013/8/13

N2 - A physics-based method is proposed for simultaneously obtaining the hydraulic conductivity, Young's modulus, and Poisson's ratio of soil materials using the uniaxial consolidation test. A nonlinear poroelastic model is presented, and the settlement data from consolidation tests are fitted to the model at each load step with the least-squares error method to inverse the parameters. The model results perfectly fit the experimental data in the initial load steps but slightly deviate from the data in later load steps as a result of secondary settlement and a largely increased Young's modulus. The inversed parameters are compared with those calculated from the uniaxial consolidation test and those found in the literature. The comparison results demonstrate that the inversed parameters are reasonable. The proposed method provides both an estimation of parameters and the parameter-change information during a consolidation test. The method is simple, efficient, and versatile for obtaining poromechanical parameters with the uniaxial consolidation test. These parameters are useful for groundwater, geomechanical, and mining engineering.

AB - A physics-based method is proposed for simultaneously obtaining the hydraulic conductivity, Young's modulus, and Poisson's ratio of soil materials using the uniaxial consolidation test. A nonlinear poroelastic model is presented, and the settlement data from consolidation tests are fitted to the model at each load step with the least-squares error method to inverse the parameters. The model results perfectly fit the experimental data in the initial load steps but slightly deviate from the data in later load steps as a result of secondary settlement and a largely increased Young's modulus. The inversed parameters are compared with those calculated from the uniaxial consolidation test and those found in the literature. The comparison results demonstrate that the inversed parameters are reasonable. The proposed method provides both an estimation of parameters and the parameter-change information during a consolidation test. The method is simple, efficient, and versatile for obtaining poromechanical parameters with the uniaxial consolidation test. These parameters are useful for groundwater, geomechanical, and mining engineering.

UR - http://www.scopus.com/inward/record.url?scp=84881245167&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84881245167&partnerID=8YFLogxK

U2 - 10.1061/(ASCE)GT.1943-5606.0000862

DO - 10.1061/(ASCE)GT.1943-5606.0000862

M3 - Article

VL - 139

SP - 1396

EP - 1401

JO - Journal of Geotechnical and Geoenvironmental Engineering - ASCE

JF - Journal of Geotechnical and Geoenvironmental Engineering - ASCE

SN - 1090-0241

IS - 8

ER -