HOLLOW COMPOSITE GIRDER FOR BRIDGE AND METHOD OF CONSTRUCTING THE SAME

摘要

The present invention relates to a steel composite girder and a constructing method thereof. A steel composite girder and a constructing method thereof capable of improving construction stability by combing advantages of hollow steel girder and concrete and lowering the center of gravity of the steel composite girder by composing: a steel girder formed to have a close span unit by forming a partition wall in a location separated inward from open both end units; a reinforcement steel bar distributed on the outer circumferential surface of the steel composite girder; a filling concrete filled inside an inner space from the both end units of the steel composite girder to the partition wall; a composite concrete formed to surround a part of the steel composite girder to expose at least an upper part of the steel composite girder while surrounding a lower part of the steel composite girder; and a tendon longitudinally installed to be supported by the concrete filled inside the both end units of the steel composite girder and prestressed.