| 摘要 |
PROBLEM TO BE SOLVED: To provide a joint sealant and a fitting structure thereof that prevent leakage of sediment, retained water and others even in a case of displacement that equals to or exceeds a primary allowance.SOLUTION: A joint sealant 10 includes: a secondary water cutoff member 12 formed of an elastic material and having both edges fixed on caissons 51, 51 placed adjacent to each other on both sides of a joint part 52, and an excess length part 12a that prevents leakage from a part between the caissons 51, 51; and a primary water cutoff member 11 disposed on one side of the secondary water cutoff member 12, having both edges fixed on the caisson 51, 51 on both sides of the joint part 52, and preventing leakage while allowing displacement between the caissons 51, 51. When displacement is up to a primary allowance set, the first water cutoff member 11 allows the displacement and restricts displacement of the excess length part 12a, and when displacement exceeds the primary allowance, the excess length part 12a allows the displacement.SELECTED DRAWING: Figure 4 |
