HYBRID BEAM HAVING WIDE PSC LOWER FLANGE AND ENLARGED SECTION UPPER FLANGE AND STRUCTURE USING SAME

摘要

The present invention relates to a hybrid beam having a wide PSC lower flange and an enlarged section upper flange and a structure using the same. Specifically, the hybrid beam having the wide PSC lower flange and the enlarged section upper flange can obtain integrity with in-site concrete without an additional shear connector and can improve a horizontal shear internal force as a reinforcing bar of a slab can be arranged to be continuous in the upper part and the lower part. Also, the hybrid beam having the wide PSC lower flange and the enlarged section upper flange can maximize continuity of the beam and the slab and between the slabs adjacent to each other and can reinforce a compression zone when a construction load is applied or after being composed of the in-site concrete. According to a proper aspect of the present invention, the hybrid beam having the wide PSC lower flange and the enlarged section upper flange includes: the wide PSC lower flange comprising prestressed concrete to have a fixed length and a cross section having the width wider than the height; an embedded steel frame web comprising a pair of steel sheets having a through hole at fixed intervals in the longitudinal direction at a lower end and spaced at fixed intervals to be parallel, wherein the lower end of the embedded steel frame web is embedded in the wide lower flange in order for the through hole to be exposed to the upper part of the wide lower flange; the enlarged section upper flange formed in an upper end of the embedded steel frame web and reinforcing the compression zone; and a spacer connecting the enlarged section upper flanges on both sides.;COPYRIGHT KIPO 2017