Patent ID: 8915042

Claim:
A steel frame structure having columns, a girder connected between the columns, and beams connected to the girder, the steel frame structure comprising: brackets connected to each column between the column and the girder, each bracket having a top flange; the girder having a center portion, end portions, mounting plates and a generally U-shaped section, connecting members connecting the brackets to the girder, each of the connecting members having end portions and a top flange plate having a top portion, one of the end portions of each of the connecting members extending from one of the ends of the girder and the other of the end portions of the connecting members connected to one of the brackets, each connecting member having a center web plate and top and bottom flange plates formed on a top and a bottom of the center web plate, interval maintaining members spaced apart from each other by a given distance over a whole length of a top surface of the mounting plates, and beam connectors connecting the beams to the girder; each of the beams having a bottom flange plate, side web plates extending upwardly perpendicularly from ends of the bottom flange plate, and mounting plates extended outwardly from the side web plates parallel to the bottom flange plate, each of the beams connected to the girder through the beam connectors and further having interval maintaining members spaced apart from each other by a given distance over a whole length of a top surface of the beam mounting plates; and covering members each having a top plate covered over the top portion of the top flange plate of the connecting members and the top flange of the brackets, side plates extending downwardly perpendicularly from the top plate, and at least one bottom plate extending outwardly horizontally from the side plates parallel to the mounting plates of the girder, whereby concrete is filled into the girder and the beams.