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Steel and Composite Structures
  Volume 15, Number 3, September 2013 , pages 281-298

3D finite element modelling of composite connection of RCS frame subjected to cyclic loading
Mohammad Hossein Habashizadeh Asl, Mohammad Reza Chenaglou, Karim Abedi and Hassan Afshin

    Composite special moment frame is one of the systems that are utilized in areas with low to high seismicity to deal with earthquake forces. Composite moment frames are composed of reinforced concrete columns (RC) and steel beams (S); therefore, the connection region is a combination of steel and concrete materials. In current study, a three dimensional finite element model of composite connections is developed. These connections are used in special composite moment frame, between reinforced concrete columns and steel beams (RCS). Finite element model is discussed as a most reliable and low cost method versus experimental procedures. Based on a tested connection model by Cheng and Chen (2005), the finite element model has been developed under cyclic loading and is verified with experimental results. A good agreement between finite element model and experimental results was observed. The connection configuration contains Face Bearing Plates (FBPs), Steel Band Plates (SBPs) enveloping around the RC column just above and below the steel beam. Longitudinal column bars pass through the connection with square ties around them. The finite element model represented a stable response up to the first cycles equal to 4.0% drift, with moderately pinched hysteresis loops and then showed a significant buckling in upper flange of beam, as the in test model.
Key Words
    composite structure; RCS connection; panel zone; cyclic loading; plastic work
Mohammad Hossein Habashizadeh Asl, Mohammad Reza Chenaglou, Karim Abedi and Hassan Afshin: Department of Civil Engineering, Sahand University of Technology, Sahand Town, Tabriz, Iran.

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