INSTALLATION METHOD OF BRIDGE GIRDER AND BEARING AND BRIDGE GIRDER USED THEREFOR AND BRIDGE LAID BY THIS METHOD

摘要

PROBLEM TO BE SOLVED: To provide an installation method of a bridge girder which allows a little horizontal deflection of a bearing after installation of the bridge girder by making use of the horizontal flexibility of the bearing and easily carries out the positional adjustment of the bearing and the bridge gireder and further, which can shorten the installation period and remarkably reduce the cost. ;SOLUTION: A flexible aseismic base isolation bearing 6 is fixed to a bridge pier 2 at the underface 22 side thereof and the bridge pier 7 having a recess 35 at the underface is arranged on the aseismic base isolation bearing 6. And one end side 34 of a shearing key 8 projecting from the upper face 26 of the aseismic base isolation bearing 6 is arranged so as to nearly face the recess 35 of the bridge girder 7 and the bridge girder 7 arranged above the aseismic base isolation bearing 6 is lowered and the underface of the bridge girder 7 is arranged on the upper face 26 of the aseismic base isolation bearing 6.;COPYRIGHT: (C)1998,JPO