HYBRID BEAM FOR SLIM-FLOOR AND SLIM-FLOOR STRUCTURE USING THE SAME

摘要

A composite beam for a slim floor and a slim floor structure using the same are provided to reduce the steel volume and improve the structural performance by bonding the reinforcing plate at the upper part of the web convex part of the reverse-T shape frame beam. A composite beam(100) for a slim floor comprises a reverse-T shape steel frame beam(110) containing a lower flange and a web formed as a continual uneven part; upper and lower reinforcing bars horizontally distributed with the longitudinal direction of the steel frame beam and placed at the upper part of the steel frame beam and the lower part of the lower flange; a first band reinforcing bar(140) distributed to cover the upper and lower reinforcing bars; and a beam concrete(150) where the upper part of the uneven part of the web of the steel frame beam and the upper parts of the upper and first band reinforcing bars are exposed, and the lower part of the steel frame beam and the lower parts of the lower and first band reinforcing bars are placed. A reinforcing plate is horizontally bonded with the lower flange of the steel frame beam at the upper part of the uneven part of the web of the steel frame beam.