The present invention relates to a novel easily-cuttable tunnel segment structure
used for the departure of a shield machine from a main tunnel to a branch tunnel
or the return to the main tunnel from the branch tunnel, and provides an easily-cuttable
tunnel segment structure 1 constructed by connecting a plurality of easily-cuttable
tunnel segment pieces 2 in the longitudinal direction of a tunnel, wherein
at least an easily-cuttable area 3 is formed by concrete 7 in which
easily-cuttable reinforcement members are arranged, and a join disposed at least
in the easily-cuttable area 3 in the longitudinal direction has an easily-cuttable
join structure.