Journal of Korean Society of Steel Construction (한국강구조학회 논문집)

Korean Society of Steel Construction (한국강구조학회)
권호 표지
DOI QR코드

DOI QR Code

A Study on Flexural Behavior of Composite PHC pile with CT Structural Steel

PHC파일과 CT형강을 합성한 합성형 벽체파일의 휨거동에 대한 연구

  • Received : 2011.10.10
  • Accepted : 2012.03.21
  • Published : 2012.04.27
Download PDF
⟨ Previous Next ⟩

Abstract

This study verifies the structural capacity of the composite PHC pile (Pretensioned spun high-strength concrete) consisting of a PHC pile and two CT structural steels. Four full-scale specimens are fabricated and the experimental tests were performed to investigate the flexural behaviors of the composite PHC piles. The composite PHC pile can enhance both the structural capacity and functional convenience, since the web of CT structural steel with holes in the web acts as a shear connector (referred to as the perfobond rib), which can connect concrete and steel. All specimens exhibited flexural failure and the ultimate strengths were larger than the anticipated design strength according to the design standard. Thus, the composite PHC pile can be applicable to wall structures with sufficient strength. In addition, it seems that the web of the CT structural steel with holes performs its role as shear connectors.

본 연구에서는 PHC(Pretensioned spun High strength Concrete)파일에 CT형강을 합성시킨 합성형 벽체파일을 실물 크기로 4개 제작한 후 휨 실험을 수행하여 합성형 벽체파일의 극한 강도와 합성작용 등의 구조 성능을 분석하였다. 합성형 벽체파일은 천공홀이 설치된 CT형강의 복부가 perfobond rib 전단연결재 역할을 하여 콘크리트와 CT형강을 합성시킨 구조물로써 CT형강의 플랜지를 이용하여 벽체파일과 버팀보 또는 상 하부 슬래브의 연결이 가능하므로 기능성과 구조적 성능이 동시에 향상된 구조이다. 모든 실험체의 파괴모드는 휨 파괴였으며, 극한강도는 설계기준에 따라 계산된 목표 설계값보다 큰 것으로 분석되어 개발된 합성형 벽체파일은 충분한 강도를 확보한 것으로 판단되었다. 또한 천공홀을 갖는 CT형강의 복부는 perfobond rib 전단연결재 역할을 적절히 수행할 수 있는 것으로 분석되었다.

Keywords

References

  1. 일본 토목연구센터(2005) 토류 구조물용 프리스트레스 콘크리트 벽체(H형 PC항).
  2. ABAQUS(2008) ABAQUS Analysis User's Manual, Ver. 6.8.
  3. Ahn, J.H., Kim, S.H., and Jeong, Y.J. (2008) Shear Behaviour of Perfobond Rib Shear Connector under Static and Cyclic Loadings. Magazine of Concrete Research, Vol. 60, pp.347-357. https://doi.org/10.1680/macr.2007.00046
  4. Ahn, J.H., Lee, C.G., Won, J.H., and Kim, S.H. (2010) Shear Resistance of the Perfobond-rib Shear Connector Depending on Concrete Strength and Rib Arrangement. Journal of Constructional Steel Research, Vol. 66, pp.1295-1307. https://doi.org/10.1016/j.jcsr.2010.04.008
  5. Candido-Martins, J.P.S., Costa-Neves, L.F., and Vellasco, P.C.G.S. (2010) Experimental Evaluation of the Structural Response of Perfobond Shear Connectors, Engineering Structures, Vol. 32, pp.1976-1985. https://doi.org/10.1016/j.engstruct.2010.02.031
  6. Oguejiofor, E.C. and Hosain, M.U. (1994) A Parametric Study of Perfobond Rib Shear Connectors, Canadian Journal of Civil Engineering, Vol. 21, pp.614-625. https://doi.org/10.1139/l94-063
  7. Oguejiofor, E.C. and Hosain, M.U. (1995) Tests of Full-size Composite Beams with Perfobond Rib Connectors, Canadian Journal of Civil Engineering, Vol. 22, pp.80-92. https://doi.org/10.1139/l95-008
  8. Oguejiofor, E.C. and Hosain, M.U. (1997) Numerical Analysis of Push-Out Specimens with Perfobond Rib Connectors, Computers and Structures, Vol. 62, No. 4, pp.617-624. https://doi.org/10.1016/S0045-7949(96)00270-2
  9. Sara, B.M. and Bahram, M.S. (2002) Perfobond Shear Connectors for Composite Construction, Engineering Journal, first quarter, pp.2-12.
  10. Ushijima, Y., Hosaka, T., Mitsuki, K., Watanabe, H., Tachibana, Y., and Hiragi, H. (2001) An Experimental Study on Shear characteristics of Perfobond Strip and its Rational Strength Equations. In: Proceedings of the international symposium on connections between steel and concrete. Stuttgart: University of Stuttgart, pp.1066-1075.
  11. Valente, I. and Cruz, P.J.S. (2004) Experimental Analysis of the Perfobond Shear Connection between Steel and Lightweight Concrete, Journal of Constructional Steel Research, Vol. 60, pp.465-479. https://doi.org/10.1016/S0143-974X(03)00124-X

Cited by

  1. An Experimental Study on Structural Capacity of Joint Between Composite PHC Wall Pile and Bottom Slab with CT Shear Connector vol.25, pp.5, 2013, https://doi.org/10.7781/kjoss.2013.25.5.531
  2. Effects of infilled concrete and longitudinal rebar on flexural performance of composite PHC pile vol.52, pp.4, 2014, https://doi.org/10.12989/sem.2014.52.4.843