REPLACING CONSTRUCTION METHOD OF SUPPORT DEVICE OF BRIDGE GIRDER AND TEMPORARY RECEIVING JACK FOR INSIDE OF HOLE

摘要

PROBLEM TO BE SOLVED: To solve the problem of requiring much cost and labor for manufacture and installation of temporary receiving members in large-scale, which is required during the time, generally as long as several ten days to several months, until the completion of the installation/fixation of a new support device by disassembling and removing an old support device in replacing work of a support device of a pier.;SOLUTION: This replacing construction method comprises a preparing process of installing a temporary receiving jack for the hole inside in a drilled hole, by drilling the hole in the horizontal direction in the pier of a lower part of the support device, before the replacing work of the support device; a process of removing a concrete skeleton and the old support device of an upper part of the drilled hole in the next place, by removing the temporary receiving jack for the hole inside installed in the drilled hole, after temporarily receiving a bridge girder by using the temporary receiving jack; and a process of removing the temporary receiving jack, after fixing the support device and a pier upper part by filling a hardening material by installing the new support device in a removed concrete skeleton part.;COPYRIGHT: (C)2008,JPO&INPIT