Abstract
Nonlinear elasto-plastic FEM analyses were conducted to simulate interaction behaviors of a geosynthetics multi-linear system installed in a slope that is made by overburden geomaterials to resist uplift force behind the seawall of a controlled sea-based disposal site. The interaction model was created based on the shear resisting characteristics obtained from a series of direct shear tests between geosynthetics and geomaterials that are used in the liner system. Then, the analysis method was verified by simulating the measured behaviors in direct shear tests on five-layered linear models. For a fundamental case of the slope, having sufficient safety factor obtained from a limit equilibrium method, in which two sets of geosynthetics multi-linear system are installed, distribution of tensile forces induced in geosynthetics were obtained by incremental analysis method that can simulate actual execution procedures. In addition, parameter studies were conducted on the effects of shear resistance between geosynthetics and their tensile rigidity.
