600N급 강을 적용한 기둥-보 용접접합부의 인성평가

This paper aimed to evaluate the toughness of the 600N grade high strength column to beam steel welded joint which subjected to cyclic loading. The specimens were designed as a unit frame of tall building's middle-stores, and cross type weld connection. SA440 were used for column and SM490 for beam. Six tests were carried out. EBS (Enlarged Beam System) specimens were considered to be superior structural strength, ductility capacity. Beam to column connection using EBS showed higher strength and toughness than the basic shape.