Prestressed cold-formed joist having reinforcement materials

摘要

The present invention is to provide a steel stud with reinforcement in the steel studs used for the roof or floor structure of the cold-formed steel to increase the resistance to the load by applying the initial tensile force to the steel studs There is a purpose.;According to the present invention, in a steel stud used as a joist in a roof or floor structure of a structure which is constructed of cold-formed steel, the steel stud 22 bent at a predetermined curvature along a longitudinal direction, and the steel stud 22 It includes a plurality of reinforcement 30 is located in a plurality of places to support the upper and lower surfaces of the steel stud 22 and the tension member 40 for connecting the plurality of reinforcement 30, the tension member 40 is adjacent reinforcement A steel stud having a reinforcement connecting the top and bottom of 30 and to which an initial tensile force is applied is provided.