Abstract

10 full scale specimens of sub-assemblage including beam-to-column connections are experimented applying axial force at column and bending moment at the end of beam. The main factors of the specimens are the stress level in the column, the shape of column, the detail of welded joints and the stiffness of column web with doubler plates. The characteristics of fracture of beam-to-column welded connections was discu-ssed in the preceding report (PART 1). This paper was discussed about the experi-mental results of stuctural behavior of beam-to-column welded connections in heavy members steel structures and effect on the charactristics of fracture by strength proportion between the members of frame work. The results are summarized as follows ; The specimesn reinforced with doubler-plates at column web within connection are more fragile than non-reinforced. It recognize that the column web become hard for reinforced with doubler-plates, but on the other hand the column and the beam keep up much more deformation.

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