Shear strength formula of CFST column-beam pinned connections

Seong Hui Lee, Young Ho Kim, Sung Mo Choi

Research output: Contribution to journalArticlepeer-review

12 Scopus citations


Recently, as the height of building is getting higher, the applications of CFST column for highrise 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.

Original languageEnglish
Pages (from-to)409-421
Number of pages13
JournalSteel and Composite Structures
Issue number5
StatePublished - Nov 2012


  • Concrete filled tubular column
  • Fem analysis
  • Pinned connections
  • Shear strength
  • Width-thickness ratio
  • Yield line method


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