Abstract
We had developed a liquefaction analysis program by Distinct Element Method (D.E.M.), and applied that method to a river dike damaged by the 1995 Hyogoken-Numbu earthquake and an urban river dike with a revetment managed in Tokyo or Osaka. The actual damaged measured vertical permanent displacement of embankment crest could be comparable with the result of analysis. The vertical displacement of embankment crest with a revetment utilized the ground improvement method with steel pipe pile and the zone occupied liquefied areas of ground foundation for the seismic resistance at riverside land, were smaller than those values of river dike with a revetment before the seismic resistance construction. Also, the effect of ground improvement planning to construct at land side was observed by this analysis. Therefore, this analysis program proved satisfactorily enough estimation for the seismic resistant method.
