| 摘要 |
PROBLEM TO BE SOLVED: To provide a segment connecting structure which is for use in connecting segments together, and facilitates connection of both joint surfaces in an appropriate state. SOLUTION: The segment has a joint surface 12 in which a first connecting fixture 17 having a pair of hook portions 24 is arranged, on one side, and the other joint surface 13 in which a second connecting fixture 18 having an engaging portion 37 consisting of a protruding portion 39 and engaging lugs 40, on the other side. The segment connecting structure is constructed by connecting the plurality of segments 11 together by inserting the engaging portion 37 into a space between the hook portions 24. According to the segment connecting structure, the hook portions 24 of the first connecting fixture 17 and the engaging portion 37 of the second connecting fixture 18 each have a long shape in an inserting direction at the time of engagement, and they function as insertion guides.
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