三角スチフナを用いた鉄骨フープ筋コンクリート柱鉄骨はり接合部の終局耐力

抄録

Steel・hoop・concrete composite structure without longitudinal reinforcing bar was developed. This composite is abbreviated to SHC. The mechanical properties of SHC were discussed in the previous papers published in the AIJ Trans. Nos. 345, 348, 354, 391 and 394. This paper mainly deals with the joint panel of steel beam and SHC column. In this joint, triangle stiffners are used. Four cross shaped beam-column joint specimens were tested. Experimental variables were the amount of hoop reinforcement and the shape of column steel section. H-shaped and cross-H-shaped steel section were used in the column. Ultimate strength of the panel was analyzed. In the analytical model, steel web shear panel, steel flange frame, hoop reinforcement with concrete and concrete enclosed by steel share the panel moment. Hoop reinforcement with concrete is modelled to truss. The concrete in the panel is replaced by a strut. The section and the strength of the strut are decided considering the area of triangle stiffners and the confined effect. The ultimate strength of beam-column joint panel is well estimated by the analysis.