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김종락,김성배,박양희,정웅기,김선명,오세진 대한건축학회 2001 대한건축학회 학술발표대회 논문집 - 계획계/구조계 Vol.21 No.1
This paper described the results of cyclic loading tests applied to 6 column to beam field welded connections. The test parameters are type of scallop, the distance from column flange to the first gauge line and the number of bolt line, The results are as follows; (1) In comparison with scallop types, in one line bolt fastening, the non-scallop type and the ellipse scallop type were shown about 110% of strength improvement ratio(α), about 130% of ductility factor(μ) and normalized cumulative plastic energy ratio(η) to the ¼ circle type. But in two bolt fastening the non-scallop type, the ellipse scallop type and, the ¼ circle type were shown the similar results. (2) The results about the distance from column flange to first gauge line : When the distance increases two times the stress improvement ratio(α) increases 114%, ductility factor(μ) and normalized cumulative plastic energy ratio(η) increase 160% as compared with general distance.
용접구조용 압연강재의 제성질에 관한 통계적 연구(1) : SM490 A, B강재의 제성질
김종락,김성배,박양희,정웅기 대한건축학회 1999 대한건축학회 학술발표대회 논문집 - 계획계/구조계 Vol.19 No.2
This study is investigated chemical components and mechanical properties of rolled steel for welded structure as follows the means, the standard deviations and correrations by analysing the mill test certificate. It is also showed the distribution of the yield stress, the ultimate strength, and the yield ratio on the materials according to the thickness variation. The results are follow; 1. It is directly proportional to the yield ratio and the yield sterns with above 0.9 of correlation. 2. It is needed to establish a distribute limitation because the range of normal distribution is very wide in the yield stress and yield ratio.