| 摘要 |
PROBLEM TO BE SOLVED: To provide a segment capable of easily suppressing the out-of-plane deformation of a flange at low cost.SOLUTION: A segment 1 includes a pair of main girders 4 and 4 disposed at both ends of a tunnel in the axial direction, a pair of end plates 5 and 5 disposed at both ends of a tunnel in the circumferential direction, a skin plate 6 for covering the ground-side end faces of the pair of main girders 4 and 4 and the pair of end plates 5 and 5, a plurality of shape holding member 7, 7, ... horizontally disposed at intervals between the main girders 4, in parallel with the end plates 5 and 5, and a reinforcement member 8 of which one end is fixed to a flange 42 arranged on the internal face of the main girder 4, and another end is fixed to the shape holding member 7.SELECTED DRAWING: Figure 1 |
