| 摘要 |
PROBLEM TO BE SOLVED: To provide a joint structure for protecting and reinforcing a flexible watertight rubber installed across two adjacent cans in the joint structure connecting, to each other, the cans forming a buried structure, and a method of reinforcing the joint structure. SOLUTION: The flexible secondary watertight rubber 21 is installed across the opening parts of the adjacent two cans 10a and 10b. At the opening center x side of the secondary watertight rubber 21, a plurality of ribs 25 are disposed in the opening of one can 10a at intervals along its inner peripheral surface and projectedly to the other can 10b side. COPYRIGHT: (C)2006,JPO&NCIPI
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