BRIDGE AND ITS CONSTRUCTION METHOD USING TIDE ARCH HYBRID GIRDERS HAVING PRECAST SLABS

摘要

PURPOSE: A tied-arch type composite girder bridge using precast slabs and a construction method thereof are provided to cause tension as much as compression stress by blocking the transfer of tension stress to slab concrete. CONSTITUTION: A tied-arch type composite girder bridge using precast slabs comprises a composite girder(210), a precast slab(220), a shear connection part, and an external tensile member(260). The composite girder in which girder concrete is filled in an outer steel material is formed in a pier or bridge post in the field. The precast slab is formed on the top of the composite girder. The shear connection part integrates the precast slab into the composite girder with steel reinforcements and concrete and makes shear connection effect by forming a plurality of protruding studs on the upper flange of the outer steel material. The external tensile member is installed under the composite girder to provide tension.