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Consolidation of a Two-Layer System for Unsaturated Soil with the Differential Quadrature Method
Based on Fredlund's one-dimensional (1-D) consolidation theory for unsaturated soils, the solution to consolidation of a two-layer system for unsaturated soil is obtained in matrix form by using differential quadrature method (DQM). The DQ solution can produce highly accurate solutions with a small number of sample points. Due to the uniform matrix structure of the present solution, it is easy to program and many complicated in situ factors can be considered. In addition, the solution can be easily extended to multilayered unsaturated soil profiles. In the case study, the influences of different saturated water permeability ratios kw,2 / kw,1and thickness ratios h2 / h1 on the dissipation of both water and air phases subjected to instantaneous loading are investigated. The variation of average degree of consolidation versus time and the isochrones along depth for both water and air phases are presented and discussed. It is found that the saturated water permeability ratio has a large influence on the dissipation process of both water and air phases.
Consolidation of a Two-Layer System for Unsaturated Soil with the Differential Quadrature Method
Based on Fredlund's one-dimensional (1-D) consolidation theory for unsaturated soils, the solution to consolidation of a two-layer system for unsaturated soil is obtained in matrix form by using differential quadrature method (DQM). The DQ solution can produce highly accurate solutions with a small number of sample points. Due to the uniform matrix structure of the present solution, it is easy to program and many complicated in situ factors can be considered. In addition, the solution can be easily extended to multilayered unsaturated soil profiles. In the case study, the influences of different saturated water permeability ratios kw,2 / kw,1and thickness ratios h2 / h1 on the dissipation of both water and air phases subjected to instantaneous loading are investigated. The variation of average degree of consolidation versus time and the isochrones along depth for both water and air phases are presented and discussed. It is found that the saturated water permeability ratio has a large influence on the dissipation process of both water and air phases.
Consolidation of a Two-Layer System for Unsaturated Soil with the Differential Quadrature Method
Zhou, Wan-Huan (author) / Zhao, Lin-Shuang (author)
Geo-Congress 2014 ; 2014 ; Atlanta, Georgia
Geo-Congress 2014 Technical Papers ; 3994-4003
2014-02-24
Conference paper
Electronic Resource
English
Consolidation of a Two-Layer System for Unsaturated Soils with the Differential Quadrature Method
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