| 摘要 |
PROBLEM TO BE SOLVED: To provide a structure for surely fixing a female metal fitting of an inter-ring joint of a segment in concrete. SOLUTION: A male screw is projected as a male metal fitting on the joining end surface of one segment to be joined. A female metal fitting is embedded in the concrete on a joining end surface of the other segment. The female metal fitting is embedded with a short pipe of projecting a plurality of disc spring washers on the inside surface of a face plate. A cap is fitted to the tip of the short pipe, and side plates are fixed to both side edges of the face plate, and a reinforcement end is fixed to the side plate. COPYRIGHT: (C)2005,JPO&NCIPI
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