| 摘要 |
PROBLEM TO BE SOLVED: To provide a segment capable of securing fixing performance without increasing the size of a segment joint.SOLUTION: The segment 1 of a tunnel includes a skin plate 2 forming an outer peripheral surface of the tunnel, main girders 3, 3 erected at both side edges thereof at an interval in the axial direction, joint plates 4, 4 erected at both end edges of the skin plate at an interval in the peripheral direction, ribs 5, 5A extending between the main girders on a surface of the skin plate to be parallel to the joint plates, segment joints 7 arranged on the joint plates to connect the segment to the other one in the peripheral direction, ring joints 8 arranged at the main girders to connect the segment with the other one in the axial direction, and a concrete part 6. Each of the segment joints extends between a notch formed at the rib 5 erected near the joint plate and the joint plate, and includes a fixing part embedded in the concrete part. |
