Ballast retaining structure, tool jig, and bedded track

摘要

A ballast retaining structure according to the present invention is a ballast retaining structure in which ballast laid on the roadbed is tamped to thereby retain a track bed extended in an extending direction of the roadbed from a transverse direction thereof, and includes a layered body formed by a plurality of bag-like objects, each being formed in a bag shape and containing the ballast, which are stacked from a toe of slope to a top of slope of the track bed such that each of the bag-like objects is tilted to decline from an outer end portion to an inner end portion thereof.