Abstract
In the Maizuru-Wakasa expressway construction, the soft ground composed of the cohesive soil and humus soil is also thick 40m or more and piles up. In the test embankment executed for this soft ground measures, a very big settlement was generated, and a large deformation as for the surrounding ground was caused. In addition, a special tendency to concentrate only on the one side of the embankment was seen as for the deformation of the surrounding ground. The check boring and FEM analysis were executed to examine such a deforming behavior factor in this thesis. As a result, the possibility that a local slipping in the humus layer are caused, and it was guessed that this humus layer moved along a basic inclination. Moreover, it has been understood to be able to expect an enough effect as a deformation control measures against the surrounding ground by promoting the consolidation of this humus layer.
