| 摘要 |
PURPOSE:To easily perform low cost construction work by integrally fitting a coating elastic member provided with a flange like elastic member on its outer peripheral face on an anchor bar and fitting an anchor cap on the anchor bar so as to be movable along the direction of expansion of a bridge. CONSTITUTION:The lower part of an anchor bar 1 is buried in a bridge pier 2 or an abutment with the upper part of the anchor bar 1 protruding from the bridge pier 2 or the abutment. Then, a flange like elastic member 6 is provided on the circumference of a coating elastic member 5 with which the protruding part of the anchor bar 1 is covered. The coating elastic member 5 is mounted on the peripheral face of the anchor bar 1. Next, an anchor cap 4 is fitted on the protruding part of the anchor bar 1. On the top face of the coating elastic member 5, a tip support elastic member 8 for securing a clearance toward the ceiling face of the anchor cap 4 is provided. When a bridge girder after construction is expanded by contracted due to change of temperature or the like, the peripheral part of the flange like elastic member 6 is deformed to absorb the displacement of the anchor cap 4. Vertical deformation is absorbed by the elastic deformation of the support elastic member 8. |
