Abstract
In the construction of Shinkansen railway, the slab track type embankments is applied in order to reduce the maintenance works, as a substitute for existing type of ballasted track. However, the allowable deformation of the slab track type embankments is restricted severely at usual and earthquake states. Therefore, a reasonable and economic design of geogrid reinforced embankment is an important subjects in the seismic design for large earthquakes.
In this report, the required length and arrangements of geogrid reinforcement are examined based on allowable deformation requirement of slab track embankment. Other design parameters, such as: the height and slope of embankment, filled materials, compaction performance and subground conditions are also examined.
