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An Analytical Evaluation on Buckling Resistance of Tapered H-Section Deep Beam  

Lee, Seong Hui (서울시립대학교 건축공학과)
Shim, Hyun Ju (중앙대학교 건축공학과)
Lee, Eun Taik (중앙대학교 건축학부)
Hong, Soon Jo (우석대학교 건축공학과)
Choi, Sung Mo (서울시립대학교 건축학부)
Publication Information
Journal of Korean Society of Steel Construction / v.19, no.5, 2007 , pp. 493-501 More about this Journal
Abstract
Recently, in the domestic amount of materials,curtailment and economic efficiency security by purpose, tapered beam application is achieved, but the architectural design technology of today based on the material non-linear method does not consider solutions to problems such as brittle fracture. So, geometric non-linear evaluation thatincludes initial deformation, width-thickness ratio, web stiffener and unbraced length is required. Therefore, in this study, we used ANSYS, a proven finite elementanalysis program,and material and geometric non-linear analysis to study existing and completed tapered H-section as deep beam's analysis model. Main parameters include the width-thickness ratio of web, stiffener, and flange brace, with the experimental result obtained by main variable buckling and limit strength evaluation. We made certain that a large width-thickness ratio of the web decreases the buckling strength and short unbraced web significantly improves ductility.
Keywords
Tapered Beam; Local Buckling; Lateral-Torsional Buckling; P.E.B(Pre-Engineered Building) System; Ductile Design;
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