How to build the structure inside the tunnel and the structure inside the tunnel

摘要

PROBLEM TO BE SOLVED: To provide a tunnel inner structure and a construction method therefor that simplify construction work.SOLUTION: A tunnel inner structure according to one embodiment of the present invention includes a plurality of culverts installed in a tunnel, having a bottom part and a pair of side wall parts provided on both sides of the bottom part. Each of the two adjacent side wall parts is formed to have a cross-sectional thickness in a transverse direction of the tunnel thinner than a required performance thickness, and to have the cross-sectional thickness in the transverse direction of the tunnel thicker than the required performance thickness when the two adjacent side wall parts are coupled to each other.SELECTED DRAWING: Figure 1