Journal of the Architectural Institute of Korea Structure & Construction (대한건축학회논문집:구조계)

Architectural Institute of Korea (대한건축학회)
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Evaluation of Flexural Performance of Hybrid Steel-RC Beam System with Simplified Rigid Connection Details

단순 강접합 연결상세를 갖는 하이브리드 강재 보-철근 콘크리트 보의 휨 성능 평가

  • 권혁진 (경기대 일반대학원 건축공학과) ;
  • 양근혁 (경기대 플랜트.건축공학과) ;
  • 송유석 ((주)한기엔지니어링건축사사무소)
  • Received : 2016.09.01
  • Accepted : 2016.11.09
  • Published : 2016.11.30
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Abstract

This study examines the effect of dowel bars on the flexural behavior of a hybrid H-steel-reinforced concrete (HSRC) beam system with a simple ductile connection developed to overcome the limitation of a conventional bolt connection method. Five HSRC beams were tested under overhanging beam system subjected to two-point concentrated top loads at the free-end of H-steel beam and reinforced concrete(RC) beams. The simultaneous flexural yielding was induced at the H-steel under negative moments and RC beams under positive moments. Test results showed that the propagation of flexural cracks and peak strength of HSRC beams were insignificantly influenced by the configuration of dowel bars. Meanwhile, the flexural ductility of HSRC beams was enhanced by the dowel bars with reliable anchorage into H-steel beams, indicating that the displacement ductility ratio of HSRC beams with anchored dowel bars was approximately 1.5 times higher than that of hybrid beams with bolt connections. Furthermore, the failure loads of HSRC beams with anchored dowel bars could be accurately estimated by the collapse mechanism derived under consideration of a rigid joint for the developed ductile connection.

Keywords

Acknowledgement

Supported by : 중소기업청, 경기대학교

References

  1. Heo, B. W., Kwak, M. K., Bae, K. W., & Jeong, S. M. (2007). Flexural capacity of the profiled steel composite beams, Journal of the Korean Society of Steel Construction, 19(3), 247-258.
  2. Seo, E. A., Yang, K. H., & Hong, S. H. (2015). Evaluation on flexural behavior of hybrid beams with rigid joint connection steel and precast concrete elements, Journal of the Korea Concrete Institute, 28(1), 13-21. https://doi.org/10.4334/JKCI.2016.28.1.013
  3. Kim, S. H., Ryu, G. C., Ha, S. S., Moon, J. H., & Lee, L. H. (2006). An experimental study of the structural behavior on the precast concrete exterior beam-column joint with through-bar type connection, Journal of the Architectural Institute of Korea Structure & Construction, 22(1), 3-10.
  4. Kim, J. M. (2008). An Experimental and Analytical Investigation of Modularized Hybrid System, MSc Thesis, Kyunghee University.
  5. Park, H. G., Lee, C. H., Park, C. H., Hwang, H. J., Lee, C. N., Kim, H. S., & Kim, S. B. (2011). Cyclic seismic testing of concrete-filled U-shaped steel beam-to-steel column connections, Journal of the Korean Society of Steel Construction, 23(3), 337-347.
  6. Kim, O. J., Moon, J. H., & Lee, L. H. (2001). Shear strength of RS hybrid steel beam with reinforced concrete ends, Journal of Architectural Institute in Korea, 17(5), 27-34.
  7. Yang, K. H., Seo, E. A., & Hong, S. H. (2016). Cyclic flexural tests of hybrid steel-precast concrete beams with simple connection elements, Engineering Structures, 118, 344-356. https://doi.org/10.1016/j.engstruct.2016.03.045
  8. KS B 1010 (2004). Sets of high strength hexagon bolt, hexagon nut and plain washers for friction grip joints, Korean Standards Association.
  9. KS D 3504 (2011). Steel bars for concrete reinforcement, Korean Standards Association.
  10. KS B 0802 (2003). Method of tensile test for metallic materials, Korean Standards Association.
  11. Kim, S. B., Kim, S. S., & Ryu, D. S. (2013). Study on the cyclic seismic testing of U-shape hybrid composite beam-to-composite column connections, Journal of the Korean Society of Steel Construction, 25(1), 47-59. https://doi.org/10.7781/kjoss.2013.25.1.047
  12. Choi, H. K., Yoo, C. H., Choi, Y. C., & Choi, C. S. (2010). Structural capacity evaluation of hybrid precast concrete beam-column connections subjected to cyclic loading, Journal of the Korea Concrete Institute, 22(3), 325-333 https://doi.org/10.4334/JKCI.2010.22.3.325
  13. Kim, Y. J., Bae, J. H., Ahn, T. S., & Jang, S. H. (2014). Test of SRC column-to-composite beam connection under gravity loading, Journal of the Korean Society of Steel Construction, 26(5), 441-452. https://doi.org/10.7781/kjoss.2014.26.5.441
  14. Yang, K. H., & Mun, J. H. (2013). Flexural capacity and stress in unbonded tendons of post-tensioned lightweight concrete beams, Advances in Structural Engineering, 16(7), 297-310.
  15. Mansur, M.A., Chin, M.S., & Wee, T.H. (1997). Flexural behavior of high-strength concrete beams, ACI Structural Journal, 94(6), 663-674.
  16. Sarkar, A.S., Adwan, O., & Munday, J.G.L. (1997). High strength concrete: an investigation of the flexural behavior of high strength RC beams, Journal of the Institution of Structural Engineers, 75(7), 115-121.
  17. ACI 318-14 (2014). Building Code Requirements for Structural Concrete and Commentary, American Concrete Institute, Farmington Hills, USA.