新幹線盛土のジオテキスタイルによる耐震補強に関する研究

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  • Seismic design of geogrid reinforced Shinkansen railway embankment against large earthquakes

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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.<br>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.

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