STUDY ON APPLICATION OF CREST REINFOCING METHOD USING GEOSYNTHETICS FOR ROAD EMBANKMENT

Abstract

For establishing a highly-performed road network against earthquakes, the seismic reinforcement of road embankments is very important. In this paper, a new design idea: "artificial base-ground structure" is proposed adding to the existing "crest reinforcing structure" to control sliding failure of road embankments. The effects of seismic reinforcing methods based on the above two design ideas and their combinations are calculated with use of the safety factor analysis based on seismic coefficient method, and the application of the "crest reinforcing method using geosynthetics" combining with the "artificial base-ground structure" considering Level-1 and Level-2 seismic motions is discussed and clarified.