Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Approaches for 2D Coupled Modeling of Column-Supported Embankments
Columns in conjunction with or without geosynthetic reinforcement have been used to support embankments over soft clay worldwide. Columns can enhance both load transfer and excess pore water pressure dissipation. So far, no analytical solution is available to evaluate these two effects. Coupled mechanical and hydraulic modeling often becomes one feasible method to analyze this problem. Coupled modeling involves considerable computation time, especially under three-dimensional (3D) situations. To save computation time, the possibility of converting a three-dimensional (3D) problem into a two-dimensional (2D) one is appealing to practice. Two approaches (property and geometry conversions) were adopted and examined in this study to simplify a 3D problem of column-supported embankments into a 2D plane-strain one. A constructed bridge approach embankment supported by deep mixed (DM) columns and reinforced by one layer of geosynthetic was adopted for this examination. The numerical results are compared with the field data to examine the validity of these two simplification approaches. Overall, the geometry conversion approach is better than the property approach to simulate the behavior of the column-supported embankment.
Approaches for 2D Coupled Modeling of Column-Supported Embankments
Columns in conjunction with or without geosynthetic reinforcement have been used to support embankments over soft clay worldwide. Columns can enhance both load transfer and excess pore water pressure dissipation. So far, no analytical solution is available to evaluate these two effects. Coupled mechanical and hydraulic modeling often becomes one feasible method to analyze this problem. Coupled modeling involves considerable computation time, especially under three-dimensional (3D) situations. To save computation time, the possibility of converting a three-dimensional (3D) problem into a two-dimensional (2D) one is appealing to practice. Two approaches (property and geometry conversions) were adopted and examined in this study to simplify a 3D problem of column-supported embankments into a 2D plane-strain one. A constructed bridge approach embankment supported by deep mixed (DM) columns and reinforced by one layer of geosynthetic was adopted for this examination. The numerical results are compared with the field data to examine the validity of these two simplification approaches. Overall, the geometry conversion approach is better than the property approach to simulate the behavior of the column-supported embankment.
Approaches for 2D Coupled Modeling of Column-Supported Embankments
Huang, Jie (Autor:in) / Han, Jie (Autor:in)
U.S.-China Workshop on Ground Improvement Technologies 2009 ; 2009 ; Orlando, Florida, United States
Advances in Ground Improvement ; 36-45
10.03.2009
Aufsatz (Konferenz)
Elektronische Ressource
Englisch
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