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http://dx.doi.org/10.12989/scs.2012.13.5.409

Shear strength formula of CFST column-beam pinned connections  

Lee, Seong-Hui (Automobile Examination Division, Korean Intellectual Property Office)
Kim, Young-Ho (Sejin Patent & Law Office)
Choi, Sung-Mo (Division of Architectural Engineering, School of Architecture and Architectural Engineering, University of Seoul)
Publication Information
Steel and Composite Structures / v.13, no.5, 2012 , pp. 409-421 More about this Journal
Abstract
Recently, as the height of building is getting higher, the applications of CFST column for high-rise buildings have been increased. In structural system of high-rise building, The RC core and exterior concrete-filled tubular (CFST) column-beam pinned connection is one of the structural systems that support lateral load. If this structural system is used, due to the minimal CFST column thickness compared to that of the CFST column width, the local moment occurred by the eccentric distance between the column flange surface from shear bolts joints degrades the shear strength of the CFST column-beam pinned connections. This study performed a finite element analysis to investigate the shear strength under eccentric moment of the CFST column-beam pinned connections. The column's width and thickness were used as variables for the analysis. To guarantee the reliability of the finite element analysis, an actual-size specimens were fabricated and tested. The yield line theory was used to formulate an shear strength formula for the CFT column-beam pinned connection. the shear strength formula was suggested through comparison on the results of FEM analysis, test and yield lime theory, the shear strength formula was suggested.
Keywords
shear strength; concrete filled tubular column; pinned connections; width-thickness ratio; yield line method; fem analysis;
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