Experiments on Beam - to - Column Welded Connections with Wide Flats and Steel Plates Produced by Electric Furnaces

Abstract

In order to evaluate the applicability of wide flats and steel plates produced by electric furnaces to steel structures of buildings, experiments on subassemblages of the members with the beam-to-column welded connections are carried out. 27 specimens are prepared and examined under cyclic loading until the ultimate state. 15 specimens fractured at the T-butt joint between the flange of column and the lower flange of the beam where the type for the site welding is adopted as the detail of the groove and scallop. The phenomena of the fractures are categorized to 6 types depending on the ratio of the yield loads among the column, the beam and the beam-to-column connection, material toughness and quality of welding including tack weldings.