| 摘要 |
PROBLEM TO BE SOLVED: To surely support a load when a vehicle passes, and to reduce a vertical moving amount as further as possible.SOLUTION: A joint material for a road has rubber elasticity and is disposed in a bed slab expansion gap of the road. The two plate-like parts 71, 76 positioned outermost are formed in such a manner as to oppose each other while vertically orienting a width direction of plate surfaces, and plate-like parts 72-75 are arrayed at fixed intervals between the plate-like parts 71, 76 while being formed in an obliquely inclined shape so as to invert inclining directions alternately horizontally while orienting a length direction of plate surfaces in the same direction as the plate-like parts 71, 76. Plate-like parts 77-81 are provided between the plate-like parts 71-76, respectively, while orienting the planes thereof along the arraying direction of the plate-like parts 71-76 and the length direction of the plate-like parts (the same as a width direction Dw of the road). Therefore, the joint material for the road is formed in a bellows shape having five truncated bend portions. |
