Composite Girder with Heating-Reinforcing Steel Beam and Concrete Beam

摘要

The present invention comprises a concrete beam (1) and a steel reinforcement beam (2). An upper flange (21) of the steel reinforcement beam (2) is located at a distance in the vertical direction from the upper surface of the concrete beam (1) to the top of the concrete beam (1), and the lower portion of a web is located by being embedded in the concrete beam (1). The upper flange (21) in the steel reinforcement beam (2) exposed on top of the concrete beam (1) and the upper portion of the web (22) are provided with a steel concrete composite girder when a slab (4) is constructed in the upper portion of the concrete beam (1). The steel concrete composite girder has a low depth and enables prestress to be embedded in the slab constructed in the upper portion of the composite girder by the steel heat. Moreover, the composite girder can prevent damage due to freezing or the like by having an ice removing function of increasing the temperature of the upper slab winter season and getting rid of frost, snow, or the like.