| 摘要 |
PROBLEM TO BE SOLVED: To suppress breaking of a seal member due to a torsional load applied.SOLUTION: An expansion joint for a road bridge includes: a corrugated plate 1 bent in a zigzag shape and extending in a longer-side direction of a joint of a road bridge; a horizontal plate 2 having a concave-convex part at an edge corresponding to a concave part and a convex part of the corrugated plate 1 and forming a joint gap 3 between the corrugated plate 1 and the horizontal plate; a first support member 7 installed on the corrugated plate 1 and having a first vertical plate 7a that extends linearly connecting adjacent convex parts of the corrugated plate 1 over the concave part of the corrugated plate 1, on a side below the horizontal plate 2; a second support member 19 installed below the horizontal plate 2 and having a second vertical plate 19a that linearly extends opposite the first vertical plate 7a; and a groove-form seal member 4 having an end 4a fixed on the first vertical plate 7a and the other end 4b fixed on the second vertical plate 19a.SELECTED DRAWING: Figure 2 |
