Patent ID: 8813445

Claim:
A support beam structure capable of extending a span and reducing a height of a ceiling structure, the support beam structure comprising: an H-beam extending in a longitudinal direction; a plurality of reinforcing plates inserted between the upper and lower horizontal flanges of the H-beam in such a way as to be spaced apart from each other at regular intervals, with an extension protruding part being provided on a side of each of the reinforcing plates to place a deck thereon; an inclined plate fastened to a lower inclined surface of the extension protruding part of each of the reinforcing plates; the deck placed on the extension protruding part of each of the reinforcing plates; and a concrete layer for filling a top of the inclined plate and a top of the deck, wherein each of the reinforeing plates is configured so that a first side surface thereof inserted into the H-beam has a shape of a flat rectangle and is securely inserted between the upper and lower horizontal flanges of the H-beam, and a second side surface thereof having the deck protrudes to allow the extension protruding part to be placed thereon, and a lower portion thereof coupled to the extension protruding part has an inclined surface.