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Flexural Capacity of the Encased(Slim Floor) Composite Beam with Deep Deck Plate  

Heo, Byung Wook (한국건설기술연구원)
Bae, Kyu Woong (한국건설기술연구원)
Moon, Tae Sup (한양대 건축공학부)
Publication Information
Journal of Korean Society of Steel Construction / v.16, no.2, 2004 , pp. 235-245 More about this Journal
Abstract
The advantages of composite construction are now well understood in terms of structural economy, good performance in service, and ease of construction. However, these conventional composite construction systems have some problems in application to steel framed buildings due to their large depth. So, in this study we executed an experimental test with the "Slim Floor"system which could reduce the overall depth of composite beam. Slim Floor system is a method of steel frame multi-story building construction in which the structural depth of each floor is minimized by incorporating the steel floor beams within the depth of the concrete floor slab. Presented herein is an experimental study that focuses on the flexural behaviour of the partially connected slim floor system with asymmetric steel beams encased in composite concrete slabs. Eight full-scale specimens were constructed and tested in this study with different steel beam height, slab width, with or without shear connection and concrete topping thickness. Observations from experiments indicated that the degree of shear connection without additional shear connection was $0.53{\sim}0.95$ times that of the full shear connection due to inherent mechnical and chemical bond stress.
Keywords
Slim Floor; Composite Beam; Deep Deck Plate; Shear Connector; Partially Connected Composite Beam;
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