Abstract
The fill of Noto Airport is constructed rapidly to a height of 55 meters, and its embankment material is high water content clay. Geotextile horizontal drain is installed in the fill to accelerate consolidation. To establish a reasonable method to analyze a behavior of the fill installed the horizontal drain, an applicability of the elasto-visco-plastic FEM is examined in this paper. The result of the simulation is agreed with observed deformation and stress behavior, but horizontal deformation measured is smaller than estimated by FEM. It probably shows that a reinforced effect by friction between the soil and the geotexitile, not modeled in FEM, is produced in fact. Some trial FEM calculations in varies case of the field conditions such as varies embankment speed are done, and a possibility of applying FEM which has the advantage of adapt to complicated conditions to the design for drain placing is shown.
