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


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.


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


  1. 이호준, 박홍근, 김성배, 박성순(2014) 프리캐스트 콘크리트에 의해 피복된 콘크리트충전 강관기둥의 편심압축실험, 한국강구조학회논문집, 한국강구조학회, 제26권, 제1호, pp.33-44. Lee, H.J., Park, H.G., Kim, S.B., and Park, S.S. (2014) Eccentric Axial Load Test for Concrete-Filled Tubular Columns Encased with Precast Concrete, Journal of Korean Society of Steel Construction, KSSC, Vol.26, No.1, pp.33-44.
  2. Nakamura, Y., Matsuo, A., and Ueura, K. (1999) Ultimate Strength and Plastic Deformation Capacity of CFT Columns with Covering RC Considering Material Combination, Summaries of Technical Reports, AIJ, No.7, pp.39-44 (in Japanese).
  3. Miyauchi, Y., Fukuhara, T., Hiroshige, T., and Muto, K. (2010) Seismic Behavior of Reinforced Concrete Covered CFT Structural Elements: Part2. Performance of Steel Beam-Column Joints, Summaries of Technical Papers of Annual Meetings(Structures III), AIJ, pp. 1361-1362 (in Japanese).
  4. ANSI/AISC 341 (2005) Seismic Provisions for Structural Steel Buildings, American Institute of Steel Construction, Chicago.
  5. 임형주, 박홍근, 엄태성, 강수민(2010) 프리캐스트 콘크리트 U형 쉘 공법 보-기둥 접합부의 내진성능, 한국콘크리트학회논문집, 한국콘크리트학회, 제22권, 제6호, pp. 741-751. Im, H.J., Park, H.G., Eom, T.S., and Kang, S.M. (2010) Earthquake Resistance of Beam-Column Connection of Precast Concrete U-Shaped Shell Construction, Journal of the Korea Concrete Institute, KCI, Vol.22, No.6, pp.741-751 (in Korean).
  6. 대한건축학회(2009) 건축구조설계기준 및 해설(KBC 2009), 기문당. AIK (2009) Korea Building Code and Commentary - Structural, Architectural Institute of Korea (in Korean).
  7. Park, R. (1988) State-of-the-Art Report on Ductility Evaluation from Laboratory and Analytical Testing, Proceedings of 9th World Conference on Earthquake Engineering, Tokyo-Kyoto, Japan, Vol.8, pp.605-616.
  8. Architectural Institute of Japan (2008) Recommendations for Design and Construction of Concrete Filled Steel Tubular Structures, 2nd ed. (in Japanese).
  9. Fukumoto, T. (2007) Local Elasto-Plastic Behavior of Steel Beam to Concrete-Filled Square Steel Tube Column Moment Connections, J. Struct. Constr. Eng., AIJ, No.617, pp.177-184 (in Japanese).