| 摘要 |
PROBLEM TO BE SOLVED: To provide a new flexible joint, which has a simple structure and can constitute a joint structure having the high certainty of cutoff and excellent safety besides the easy assembly of the joint structure, the joint structure using the flexible joint and a method of executing an immersed tunnel utilizing the joint structure. SOLUTION: In the flexible joint 1, a cutoff section 10 being abutted under the state, in which the cutoff section is crossed over a joint 20 for a pair of structures 2 and 2, and cutting off water is formed on the external surface sides of the structures in a thick wall having thickness T1 of 25% of width W1. In the joint structure, the flexible joint 1 is used, and cutoff is conducted in the joint 20 between the structures 2 and 2. In the method of executing the immersed tunnel, an immersed tube with a main joint section formed by utilizing the joint structure is joined hydraulically, holding a rubber gasket.
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