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A platform for research: civil engineering, architecture and urbanism
Research on visco-elastic-plastic creep model of artificially frozen soil under high confining pressures
Abstract The triaxial creep experiment of artificially frozen soil in deep alluvium was performed by a self-developed machine of triaxial creep frozen soil. After analyzing the experiment results, applying parabolic yield criterion for improved viscoplasticity in the Nishihara model, a new creep constitutive model was established for describing frozen-soil's creep characteristics under high confining pressures. The secondary development tools and data interface had been used to add the visco-elastic-plastic creep constitutive model to standard ADINA FEM. Numerical simulation of the shaft well excavation process and field measurement displacements of frozen wall were performed in the mine; and the results showed that the visco-elastic-plastic creep constitutive model was suitable and reasonable. This constitutive model could be significance for the frozen soil structure long-term stability analysing and the displacement forecasting.
Research on visco-elastic-plastic creep model of artificially frozen soil under high confining pressures
Abstract The triaxial creep experiment of artificially frozen soil in deep alluvium was performed by a self-developed machine of triaxial creep frozen soil. After analyzing the experiment results, applying parabolic yield criterion for improved viscoplasticity in the Nishihara model, a new creep constitutive model was established for describing frozen-soil's creep characteristics under high confining pressures. The secondary development tools and data interface had been used to add the visco-elastic-plastic creep constitutive model to standard ADINA FEM. Numerical simulation of the shaft well excavation process and field measurement displacements of frozen wall were performed in the mine; and the results showed that the visco-elastic-plastic creep constitutive model was suitable and reasonable. This constitutive model could be significance for the frozen soil structure long-term stability analysing and the displacement forecasting.
Research on visco-elastic-plastic creep model of artificially frozen soil under high confining pressures
Li, Dong-Wei (author) / Fan, Ju-Hong (author) / Wang, Ren-He (author)
Cold Regions, Science and Technology ; 65 ; 219-225
2010-08-15
7 pages
Article (Journal)
Electronic Resource
English
Triaxial Low-Temperature Creep Tests of Artificially Frozen Soil
| British Library Conference Proceedings | 2011