Prediction of multidimensional deformation behavior based on observed values

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

In this study, a method is developed for predicting the future deformation of soft ground, based on measured data. Because it is difficult to predict the deformation behavior of soft ground on the basis of laboratory consolidation test results only, in situ observations are generally made. An inverse analysis is effective for identifying the in situ parameters of the ground and for predicting future deformation based on those parameters. In the method proposed, the induced anisotropy (transverse isotropy) of the ground is introduced to solve the problem of predicting lateral displacement, and a simplified hyperbolic model is introduced to simulate nonlinear shear behavior. Furthermore, the change in volume compressibility of the material and the decrease in permeability caused by consolidation are considered simultaneously through the use of a statistical model for the soil parameters. This statistical model, which takes the nonlinearity of the parameters into account, is called the stochastic nonlinear model (SNM). To verify the usefulness of the proposed method, the results of two-dimensional deformation tests are analyzed.

Original languageEnglish
Article number04014011
JournalInternational Journal of Geomechanics
Volume14
Issue number3
DOIs
Publication statusPublished - Jun 1 2014

Fingerprint

prediction
statistical models
consolidation
transverse isotropy
inverse analysis
compressibility
nonlinear models
nonlinearity
shears
permeability
anisotropy
methodology
parameter
method
soil
testing
test
in situ
laboratory
material

Keywords

  • Consolidation
  • Deformation prediction
  • Inverse analysis
  • Model test
  • Nonlinear stochastic process
  • Observational method
  • Statistical model

ASJC Scopus subject areas

  • Soil Science

Cite this

Prediction of multidimensional deformation behavior based on observed values. / Nishimura, Shin-ichi; Shuku, Takayuki; Fujisawa, Kazunori.

In: International Journal of Geomechanics, Vol. 14, No. 3, 04014011, 01.06.2014.

Research output: Contribution to journalArticle

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N2 - In this study, a method is developed for predicting the future deformation of soft ground, based on measured data. Because it is difficult to predict the deformation behavior of soft ground on the basis of laboratory consolidation test results only, in situ observations are generally made. An inverse analysis is effective for identifying the in situ parameters of the ground and for predicting future deformation based on those parameters. In the method proposed, the induced anisotropy (transverse isotropy) of the ground is introduced to solve the problem of predicting lateral displacement, and a simplified hyperbolic model is introduced to simulate nonlinear shear behavior. Furthermore, the change in volume compressibility of the material and the decrease in permeability caused by consolidation are considered simultaneously through the use of a statistical model for the soil parameters. This statistical model, which takes the nonlinearity of the parameters into account, is called the stochastic nonlinear model (SNM). To verify the usefulness of the proposed method, the results of two-dimensional deformation tests are analyzed.

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