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박학길 대한건축학회지회연합회 2006 대한건축학회연합논문집 Vol.8 No.3
The purpose of this paper is to develop geometrically variable structural systems. It especially focuses on idealizing a horizontal resisting linear structural system with a large scale spatial steel framing and can improve the construction problems for the system. Cardinal topics raised in the working procedure are delivery inconvenience, unfitness of connections, working inefficiency, construction inexactness, and working cost up etc. Geometrically variable characteristics in the structural system can provide for a much more availability at practical field engineering and constructing efficiency especially for large-scale structural system. In this paper, we defined a Geometrically Variable Structural System (GVSS) with a long span plane truss system and proposed the analytical idealization of the GVSS and solution method by means of the energy principle according to the compatibility of the system. It proves convenient to regard displacements as generalized coordinates of the joints of the GVSS. Idealizing the variable structural system with a very long span truss system assembled subsystems by means of a transformable link element. we checked up that the configuration of such system is completely definable by positions of the joints. Finally, efficiency of this method was investigated through an 80m idealized practical structural stadium model. First of all, this paper can apply the roof system like aerodrome, convention center, commercial system, stadium, and sports facility with an 80m∼150m span length.
I刑斷面의 Web Crippling과 Web Buckling에 關한 理論的 硏究
朴鶴吉 동아대학교 공과대학 부설 한국자원개발연구소 1984 硏究報告 Vol.8 No.1
This study is on the two phenomena which are the localized yielding and over-all bucking of the web plates, i, e,, web crippling and web buckling. Such situations arise when concentrated loads are applied to the shape sections(I,H,WF Type, and plate girder) of the beams, beam bearing supports, and column web for the reactions of beam flanges at the beam-to-column connections. In this paper a theoretical solution to determine the ultimate strenght was presented, and the estimative and analytical investigation for the design code(AISC)and the theoretical background was summarized. The principal findings and results of the study may be summarized as follows; 1. It is considered that the theoretical expressions adequately describes the actural condition. 2. AISC testing expressions are satisfied with force equilibrium condition, but those are unsatisfied with the mechanism and full plastic moment conditions. 3. The safety factor for the web buckling is lower than that of the web crippling at the beam-to-column connections in comparison with the plate girders.
角形鋼管 Beam-to-Column 接合部 耐力一變形 特性
朴鶴吉 동아대학교 공과대학 부설 한국자원개발연구소 1994 硏究報告 Vol.18 No.1
This paper has been researched in an attempt to estimate strength-behaviour characteristics of Beam-to-column connection between W-beam and rectangular hollow section(RHS) column. Ail yield line thee is applied to estimate yield strength of connection in this study. Stress concentration and strain distribution of the cruiform connections which β ratios of beam flange with to RHS range from 0.5 to 1.0 are analyzed by the analytical method of FEM. FEM gives good estimation for an actural connection stress-strain characteristics, but yiel line theory had some differences between the theory and actural behaviour.