| 摘要 |
PROBLEM TO BE SOLVED: To provide a movable bearing device for a bridge having excellent durability and capable of following the movement of a bridge girder in a rotating direction. SOLUTION: In this movable bearing device for the bridge, each side block 5 is composed of an upper side block 5a and a lower side block 5b, and the upper side block 5a is formed with a pinhole 10. A pin (not shown in the figure) provided at the lower side block 5b is inserted in the pinhole 10, and the upper side block 5a is constituted to be rotatable on the lower side block 5b around the position of the pinhole 10 used as a rotary shaft. Consequently, when rotating direction movement is generated to an upper shoe plate 7, the upper side blocks 5a are rotated around the positions of the pinholes 10 used as the rotary shafts. Both side faces of the upper shoe plate 7 thereby slide on the inner side faces of the upper side blocks 5a while being followed by rotational deformation around the vertical direction of a rubber bearing body 3 set as an axis, and an abutting state at abutting faces W of the upper shoe plate 7 and the upper side blocks 5a is maintained to prevent the engaging damage of the abutting faces W. COPYRIGHT: (C)2005,JPO&NCIPI |
