UPPER STRUCTURE OF CONTINUOUS STEEL COMPOSITE GIRDER BRIDGE FOR ACHIEVING EASY INSTALLATION AND EFFECTIVE ENDURANCE FOR NEGATIVE MOMENT AND METHOD OF CONSTRUCTING SAME

摘要

PURPOSE: An upper structure of a continuous bridge with improved application property, capable of efficiently supporting negative moment, and a construction method thereof are provided to manufacture the lower structure of a long span continuous bridge by supporting negative moment by a lower cross section. CONSTITUTION: An upper structure of a continuous bridge with improved application property comprises a first girder, a third steel composite girder(130), a second girder and a bottom slab concrete(30). The first girder is manufactured in order to support positive moment actuating on the bridge. The third steel composite girder supports the negative moment actuating on the first continuous supporting point.