Segment joint structure and tunnel construction method

摘要

PROBLEM TO BE SOLVED: To provide a joint structure of a segment capable of cutting by a cutter head of a shield excavator. SOLUTION: A joint structure 20 for abutting and joining the ends of adjacent segments 10 has a rod-shaped member 21 inserted so as to straddle the insertion holes 13 formed at the ends of the respective segments 10 and a rod-shaped member. A gap between a nut portion 24 having a female threaded portion screwed to a male threaded portion formed at at least one end of the member 21 and a rod-shaped member 21 adjacent to the nut portion 24 and between the inner surface of the insertion hole 13 and the rod-shaped member 21. It is provided with a wedge portion 25 interposed therebetween. Here, the rod-shaped member 21 is made of resin. [Selection diagram] Fig. 3