BRIDGE REPAIRNG METHOD BY UPPER STRUCTURE LIFTING AND HINGE TYPEED TEMPORARY BRIDGE CONSTRUCTION

摘要

A bridge repairing method by upper structure lifting and hinge-type temporary bridge construction is provided to reduce the period and cost of bridge repair work by constructing a junction road in advance. A bridge repairing method comprises a step of extending the existing abutment parapet up to the final bridge lifting height first and forming a permanent junction road from the top to the rear side of the extended abutment parapet, a step of making the other side of the abutment parapet supported on the top of a upper structure(100) and setting up a junction bridge(400) in which the abutment parapet side part is omitted, a step of lifting the upper structure to the final lifting height between the upper structure and a lower structure, and a step of removing the bridge support and then removing the lifting device and the junction bridge while fixing a reinforcing member between the upper and lower structures.