| 摘要 |
PROBLEM TO BE SOLVED: To provide an expansive coupling device for a bridge, which suppresses an upheaval of a road surface at a coupling part in the expansion/contraction of the bridge. SOLUTION: In this expansive coupling device which is installed in an expansion spacing part at the connecting place of the bridge, a high-strength fiber sheet 6, whose central part is curved downward, is supported on a pair of supporting metal plates 4 and 5 which overhang toward the side of the expansion spacing part 3 from both the sides of each of bridge skeletons 1 and 2 adjoining each other in the axial direction of the bridge via the expansion spacing part; an upper part of the sheet 6 is covered with an elastic resin 7 with elasticity and durability; an end of the sheet 6 and ends of the metal plates 4 and 5 are fixed to cut step parts 8 of the bridge skeletons 1 and 2 by means of anchor materials 16; thin plates are used as the metal plates 4 and 5; and a leading end subjected to bending molding supports a root part 13 of a curved part of the sheet 6 in the state of being separated from side surfaces 12 on the expansion-spacing-part sides of the bridge skeletons 1 and 2. COPYRIGHT: (C)2005,JPO&NCIPI |
