Abstract
Data assimilation, using the particle filter (PF), and incorporating the soil-water coupled finite element method, is applied herein to choose the elasto-plastic constitutive model and to identify its parameters based on the sequential measurements of hypothetical soil tests and an actual construction sequence. An appropriate constitutive model can be selected by identifying some parameters within the Exponential/Logarithmic Contractancy model (EC/LC model) proposed by Ohno et al., which covers a wide variety of constitutive models, including the Cam-clay and the modified Cam-clay models, and intermediate models with different yield curves. The hypothetical observed displacements of a soil specimen for CD tests were obtained through synthetic FEM computation, and actual measured data were used for the settlement behavior of Kobe Airport constructed on reclaimed land.
