Column base installation structure for studs in steel-frame buildings

摘要

PROBLEM TO BE SOLVED: To provide an installation structure for a column base part for a stud of a steel structure that facilitates fitting of the stud to a beam while ensuring a performance required of the stud.SOLUTION: A structure is for installing a column base part of a stud on a top surface of a reinforced concrete beam. A plurality of gate-form reinforcing bars protrudes from a top surface of the reinforced concrete beam in a longitudinal direction of the beam, while a through-hole that opens in the longitudinal direction of the beam is formed on the column base part of the stud. The stud is positioned between a pair of the adjacent reinforcing bars, while a rod material is inserted into the through-hole so as to have the rod material hooked on the reinforcing bar from inside. Also, a bottom plate is provided on an undersurface of the column base part. A planar area of the bottom plate is smaller than a projected area of the stud. Additional concrete is cast on the top surface of the reinforced concrete beam, for embedding the column base part in the concrete along with the reinforcing bar and a steel bar inserted therethrough.SELECTED DRAWING: Figure 1