| 摘要 |
PROBLEM TO BE SOLVED: To provide a structure and a method for tunnel connection that reduce the bending moment at the joint position of a tunnel connection, with a simple and low-cost structure. ! SOLUTION: A structure for tunnel connection includes a joint segment 30, on which a first single-circle segment (a single-circle segment) is connected to a first joint end surface and both a connecting segment and a second single-circle segment (joint single-circle segment) 12A are connected to a second joint end surface 32. When the second single-circle segment 12A is connected to the joint segment 30, a pair of first single-circle main girders 13A and a second single-circle main girder 13B are connected to the second joint end surface 32. When a connecting segment is connected to the joint segment 30, the pair of first single-circle main girders 13A is removed from the second joint end surface 32, and a pair of connecting main girders of the connecting segment are connected to the position where the pair of fir |
