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Cyclic Loading Test for Beam-to-Column Connections of Concrete Encased CFT Column

콘크리트피복충전 각형강관 기둥-보 접합부의 주기하중 실험

  • Park, Hong Gun (Dept. of Architecture & Architectural Engineering, Seoul National University) ;
  • Lee, Ho Jun (Dept. of Architecture & Architectural Engineering, Seoul National University) ;
  • Park, Sung Soon (SHINSEGAE E&C) ;
  • Kim, Sung Bae (The Naeun Structural Engineering Co. Ltd.)
  • Received : 2013.08.18
  • Accepted : 2014.02.04
  • Published : 2014.02.27

Abstract

In this study, the beam-to column connections of concrete-encased-and-filled steel tube columns were tested under cyclic loading. Two specimens using steel beams and two specimens using precast concrete beams were tested. The dimension of the column cross section was $670mm{\pm}670mm$. The beam depths were 488mm and 588mm for the steel beams and 700mm for the precast concrete beams. The longitudinal bar ratios of the precast concrete beams were 1.1% and 1.5%. For the connections to the steel beams, continuity plates were used in the tube columns. For the connections to the PC beams, couplers were used for beam re-bar connections. The test results showed that except for a specimen, deformation capacities of the specimens were greater than 4% rotation angle, which is the requirement for the Special Moment Frame. Particularly, specimens using precast concrete beam showed excellent performances in the strength, deformation, and energy dissipation.

Keywords

Beam-column connection;Concrete-encased-and-filled steel tubular column;Precast concrete beam;Steel beam;Cyclic load test

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