| 摘要 |
PROBLEM TO BE SOLVED: To provide a tunnel segment capable of preventing corrosion of a metallic part without requiring much trouble. SOLUTION: This tunnel segment comprises a segment body Sh constituted by integrally constituting a pair of outer main beams 1, a pair of joint plates 2, and a circumferential surface plate part 3 connected over both the outer main beams 1 and both the joint plates along the circumferential direction of the tunnel by use of a metallic material; a concrete filling part V filled with concrete c, which is formed in a hollow part enclosed by the outer main beams 1, the joint plates 2 and the circumferential plate part 3; and a sealing part 5 continued over the respective butt surface 4 to each segment body Sh to be arranged adjacently. The concrete filling part V is formed so that the tunnel inner circumferential-side surface is located closer to the tunnel inner circumferential side over the outer main beams 1 and the joint plates. The sealing part 5 is arranged in a concrete butting surface 4b consisting of only the concrete filling part V within the butt surface 4. COPYRIGHT: (C)2005,JPO&NCIPI
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