ABSTRACT
A series of numerical analysis in terms of elasto-viscoplastic finite element method is performed for a Geosynthetic Horizontal Drain (GHD)-reinforced soft clay embankment that was actually constructed in the southern part of Osaka. In this analysis, truss element has been introduced for modeling GHD that is assumed to be a linear elastic material with constant modulus. The effect of interaction between GHD and clay is taken into account with joint element. As far as the effect of drainage of GHD is concerned, perfectly drained boundary is introduced in this particular case where the loss of permeability in GHD is not taken into account. Stress buildup and deformation of the embankment associated with migration of excess pore water pressure are discussed based on the calculated performance. In-situ monitored results are compared with the numerical ones to discuss the validity of the present modeling.
