Subway station steel structure support roof beam

The utility model relates to a subway station steel structure support roof beam, including I -steel, two square steel, two square steel settings are at the intracavity of acceping of the I -steel left and right sides, it is fixed to adopt a plurality of bolted connection between the pterygoid lamina of two square steel and I -steel, be equipped with the arc bead of the length direction extension of a plurality of these square steel of edge on the inside wall of every square steel, the pouring has the concrete in the cavity of two square steel, be equipped with the fire prevention gasket between the inner wall of concrete and square steel. The beneficial effects of the utility model are that: rigidity is big, overall stability is gone with in the part, has strengthened a supporting beam's bearing capacity to and bending resistance torsional strength, have good anti power ability, through setting up the fire prevention gasket between the inner wall at concrete and square steel, and then make subway station stee