| 摘要 |
PROBLEM TO BE SOLVED: To provide an in-tunnel ceiling structure excellent in heat resistance, which can enhance in-situ workability, and which can reduce the application of a load to tunnel lining. SOLUTION: Ceiling bearing parts, between which an interval is provided in the longitudinal direction of a tunnel and which protrude in such a manner as to face the internal-space side of the tunnel, are provided on both left and right sides, perpendicular to the longitudinal direction of the tunnel, of an upper part of an interior wall of the tunnel; pieces of shape steel are laid across the respective ceiling bearing parts on both the left and right sides between which an interval is provided in the longitudinal direction of the tunnel; a metal corrugated sheet is laid and fixed across the pieces of shape steel, between an interval is provided in the longitudinal direction of the tunnel; and the pieces of shape steel, which are laid between the ends of the metal corrugated sheets serially adjacent to each other in the longitudinal direction of the tunnel so as to fix the ends of the metal corrugated sheets, are joined to each other. COPYRIGHT: (C)2005,JPO&NCIPI
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