| 摘要 |
PROBLEM TO BE SOLVED: To provide a method for constructing a floor slab in a tunnel in a high-quality and inexpensive manner within a short period. SOLUTION: The T-shaped PC floor slab 2 composed of a horizontal floor slab 21 and a supporting wall 22 is conveyed by a truck while remaining in a T-shaped state, moved downward in a suspended state in a prescribed position, and horizontally rotated at an angle of 90 degrees. After that, both ends of the floor slab 21 are placed on height adjusting implements 4 mounted on the top surfaces of supporting frames 3 on both sides of the inner wall of the tunnel 1. Concurrently with that, after the lower end of the supporting wall 22 is inserted into the groove part 11 of the adjusting base 10 of the bottom surface of the tunnel 1, the implements 4 are operated, and both of the supporting frames 3 are buried for fixation by means of a curing material 14.
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