COMPOSITE GIRDER USED STELL-CONCRETE FOR UPPER LOWER REINFORCING ENDURANCE FORCE OF CONTINUITY OF PRESTRESS BRIDGE

摘要

A steel-concrete composite girder for reinforcing the upper and lower resistance load on the continuous point of a prestressed composite girder bridge is provided to increase drooping and bending resistance about the applied load because the composite section of the concrete part is enlarged and prestressed. A steel-concrete composite girder for reinforcing the upper and lower resistance load on the continuous point of a prestressed composite girder bridge comprises H-steel girders(10,10a,10b), and a concrete member(20) and a reinforcement member(30). The H-steel girder is distanced from the continuous point(C) positioned in a bridge post(A) of a composite girder bridge. The concrete member makes load capacity on the continuous supporting point reinforced. The concrete member comprises a first block(20a) and a second block(20b). The first block is fixed to the lower part of each girder. The second block enlarges the composite section on the continuous point. The reinforcing member is fixed on top of the second block and top of each girder.