| 摘要 |
PROBLEM TO BE SOLVED: To secure water cut-off performance and reduce a cost while improving workability.SOLUTION: A road bridge expansion device 10 in which both ends in a length L direction of a plurality of expansion device units 12 abut on each other, comprise a pair of clearance forming members 14 and a water cut-off member 16. A pair of end surfaces 1610 are positioned on both ends in the length L direction of the water cut-off member 16, and are formed of a flat surface. Recessed parts 1612 are provided on the pair of end surfaces 1610, respectively. and are formed over the total length in a width W2 direction of the water cutoff member 16. A sealing material 24 is applied to the opposed end surfaces 1610 of the water cutoff members 16 adjacent to each other, and the sealing material 24 is filled in the recessed parts 1612 opposed to each other, and both end surfaces 1610 are pressed to each other, and the end surfaces 1610 of the water cut-off members 16 are integrally joined. |
