Estimating poromechanical properties using a nonlinear poroelastic model

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

研究成果: Article

5 引文 斯高帕斯(Scopus)


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.

頁(從 - 到)1396-1401
期刊Journal of Geotechnical and Geoenvironmental Engineering
出版狀態Published - 2013 八月 13

All Science Journal Classification (ASJC) codes

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

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