METHOD OF MOUNTING BASE ISOLATION DAMPER

摘要

PROBLEM TO BE SOLVED: To provide a method of mounting a base isolation damper capable of additionally mounting the base isolation damper on an existing bridge of T-beam and box-beam structure made of a prestressed concrete by a simple construction work. SOLUTION: An additional concrete 16 for connecting the vertical walls of adjacent T-beams 13a in the direction perpendicular to the axis of the bridge is placed at a position apart a predetermined distance from a pier 11 in the axial direction of the bridge. The upper part of the base isolation damper 21 is fixed to the additional concrete 16 with an anchor 25a. An extension 18 extending from the pier 11 in the axial direction of the bridge is formed oppositely to the additional concrete 16. The lower part of the base isolation damper 21 can be fixed to the extension 18 with the anchor 24a. COPYRIGHT: (C)2007,JPO&INPIT