| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide an earthquake-resistance reinforcement method and an earthquake-resistance reinforcement structure of a concrete main girder for a bridge capable of easily installing a bearing and an installation member, while improving earthquake-resistance reinforcement performance of the concrete main girder, by maximally restraining a chipping quantity of the concrete main girder.SOLUTION: A hole 1d of the depth within cover concrete is drilled on a side surface of a concrete main girder 1 in response to a position of a plurality of female screw holes formed on a sidewall of an installation member 5, and the tip of a fixing bolt 6 is not projected from the sidewall of the installation member 5, and the installation member 5 is screwed in the female screw hole at an interval between a bottom surface and the side surface of the installation concrete main girder 1, and a form is installed in both side openings of the installation member 5, and concrete mortar 9 is filled in a cavity of the concrete main girder 1 enclosed by the installation member 5 and the form, and the tip of the fixing bolt 6 is inserted into the hole 1d of the concrete main girder 1 by rotating the fixing bolt 6, and the concrete mortar 9 is cured and hardened, and the installation member 5 is integrated with the concrete main girder 1.</p> |
