CONCRETE FILLED STEEL TUBE STRUCTURE WITH STRENGTHENS CROSS SECTION STIFFNESS OF GIRDER

摘要

The present invention, a pillar installed to stand on the floor, and pouring concrete into the column part casting space formed on the inside; and a main girder that installs the center at the lower part of the column, pours a part of the concrete that has flowed into the column part pouring space in the center, and installs a slab at the side end; It aims to provide a reinforced CFT structure. According to the present invention as described above, by pouring concrete inside the column, it is possible to not only improve the performance of the cross-sectional rigidity of the column, but also have the effect of improving the performance of the cross-sectional rigidity of the girder installed on the column. More specifically, part of the concrete flowing into the column is poured into the central part of the girder installed on the column, and the side end part extending from the central part is provided with a casing to pour concrete, so that the column of the CFT structure and the It has the effect of remarkably improving the cross-sectional stiffness performance of both the joint part of the girder and the support part of the slab.