Pre-packed block roadbed and its construction method

摘要

PROBLEM TO BE SOLVED: To provide a prepacked block roadbed and a construction method therefor which increase roadbed rigidity on a fill at the boundary between a railway track structure and the fill to suppress an abrupt change in track support rigidity between the fill and a concrete structure (box culvert).;SOLUTION: The prepacked block roadbed includes a plurality of block-shaped bags 5 containing ballast that are arranged with gaps 6 on fill 2 at the structure boundary 3 of a railway track, ballast 7 cast in the gaps 6 between the block-shaped bags 5, and ultra-quick-hardening mortar 8 placed to fill gaps between the ballast 7.;COPYRIGHT: (C)2010,JPO&INPIT