INCREMENTAL LAUNCHING METHOD(I.L.M) FOR ARCH BRIDGE STRUCTURE USING ATEMPORARY SEGMENT-SUPPORTER INSTALLED TO SUBSTRUCTUREOF BRIDGE

摘要

An arch bridge construction method using an incremental launching method is provided to carry out construction of an arch bridge in case traffic control is difficult and bypasses are limited in carrying out temporary construction at the area in which national roads, freeways, train rails intersect. An arch bridge construction method using an incremental launching method comprises: a process of forming a propulsion yard having propulsion facility and a field assembly yard with a crossbeam; a process of extruding temporary bridge structure prefabricated in the field assembly yard through an extruding machine at the position for constructing the bridge(20) and constructing an arch-shaped structure(50); a process of extruding the arch-shaped structure manufactured in the field assembly yard on a span bridge of the bridge structure which is temporarily constructed and extruding the bridge structure to the field assembly yard and setting the arch-shaped structure to be fixed; and a process of dismantling facilities surrounding the arch bridge.