SEGMENT AND ITS MANUFACTURING METHOD

PROBLEM TO BE SOLVED: To provide a segment and its manufacturing method making the member thickness thin and causing no chipping of the corner part in a shield tunnel of great depth and bore. SOLUTION: The segment 1 is manufactured comprising a general part 2 manufactured from a cement-based material 41 of high strength and formed as a rectangular slab with required curvature, and end face members 3 manufactured from a fiber reinforced cement-based mixed material and provided at the end faces of the general part 2 to constitute joint parts between the segments, wherein the surface of the end face member 3 on one end or both ends is provided with a seal groove 31 recessed in the extended direction. Waterproof coating treatment may be applied in a straddling manner to the surfaces of the end face members 3 and the surface of the general part 2. COPYRIGHT: (C)2005,JPO&NCIPI