| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a composite segment capable of surely preventing positional dislocation in the circumferential direction of a segment, without increasing the number of inter-ring bolts for connecting the segments.SOLUTION: A composite segment comprises a circular-arc-shaped frame body 1, a skin plate 2 joined to the frame body 1 and concrete 3 infilled in the frame body . The frame body 1 is composed of a pair of circular-arc-shaped main girders 4 in one and the other, a pair of joint plates 5 joined between both end parts of the main girders 4, a plurality of longitudinal ribs 6 joined between the main girders 4 and a plurality of width stopping reinforcements 7 joined between the main girders 4. Insertion holes 13 and 15 are formed in the main girders 4, and one tip 7a of the width stopping reinforcement 7 projects from the one main girder 4 by penetrating through the insertion hole 15 of the one main girder 4, and the other main girder 4 is formed with an insertion part 12 for inserting the tip 7a of the width stopping reinforcement 7 of a separate segment connected by an inter-ring bolt.</p> |
