Computers and Concrete

  • 제22권3호
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  • Pages.261-267
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  • 2018
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  • 1598-8198(pISSN)
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  • 1598-818X(eISSN)
테크노프레스 (Techno-Press)
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An experimental and numerical study on long-term deformation of SRC columns

  • An, Gyeong-Hee (Department of Civil and Environmental Engineering, Korea Advanced Institute of Science and Technology) ;
  • Seo, Jun-Ki (Construction & Environment Team, Gyeongin Construction Headquarters, Korea Electric Power Corporation) ;
  • Cha, Sang-Lyul (Department of Civil and Environmental Engineering, Korea Advanced Institute of Science and Technology) ;
  • Kim, Jin-Keun (Department of Civil and Environmental Engineering, Korea Advanced Institute of Science and Technology)
  • 투고 : 2017.01.31
  • 심사 : 2018.08.03
  • 발행 : 2018.09.25
⟨ 이전 논문 다음 논문 ⟩

초록

Long-term deformation of a steel-reinforced concrete (SRC) column is different from that of a reinforced concrete (RC) column due to the different moisture distribution. Wide-flange steel in an SRC column obstructs diffusion and makes long-term deformation slower. Previous studies analyzed the characteristics of long-term deformation of SRC columns. In this study, an additional experiment is conducted to more precisely investigate the effect of wide-flange steel on the long-term deformation of SRC columns. Long-term deformation, especially creep of SRC columns with various types of wide-flange steel, is tested. Wide-flange steel for the experiment is made of thin acrylic panels that can block diffusion but does not have strength, because the main purpose of this study is to exclusively demonstrate the long-term deformation of concrete caused by moisture diffusion, not by the reinforcement ratio. Experimental results show that the long-term deformation of a SRC column develops slower than that in a RC column, and it is slower as the wide-flange steel hinders diffusion more. These experimental results can be used for analytical prediction of long-term deformation of various SRC columns. An example of the analytical prediction is provided. According to the experimental and analytical results, it is clear that a new prediction model for long-term deformation of SRC columns should be developed in further studies.

키워드

과제정보

연구 과제 주관 기관 : NRF

참고문헌

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피인용 문헌

  1. Axial behavior of steel reinforced lightweight aggregate concrete columns: Analytical studies vol.38, pp.2, 2018, https://doi.org/10.12989/scs.2021.38.2.223