CONSTRUCTION METHOD FOR COMPOSITE TYPE RAHMEN BRIDGE

摘要

The present invention relates to a method of fabricating a prestressed composite girder using a steel girder, a method of constructing a composite rigid-frame bridge using a prestressed composite girder, and a composite rigid-frame bridge constructed by the method of constructing a composite rigid-frame bridge using a prestressed composite girder. More specifically, the present invention relates to a method of constructing a composite rigid-frame bridge which includes the steps of fabricating a prestressed composite girder by prestressing an I-shaped or H-shaped steel girder; fabricating left and right columns in which multiple PC steel wires protruded upward in the vertical direction are inserted inside and concrete is poured on a field soil; placing lower ends of vertical parts of ��shaped connecting steels, each of which includes a vertical part, a joint part, and a horizontal part, on upper parts of the columns, respectively, applying tension to the PC steel wires, and fixing the ��shaped connecting steels to the columns; placing the prestressed composite girder between both ends of horizontal parts of the two ��shaped connecting steels, and coupling the prestressed composite girder to the ��shaped connecting steels by a fastening member; and forming a rigid-frame by arranging reinforcing bars, installing a mold, and pouring an upper slab outside the prestressed composite girder and the ��shaped connecting steels.