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

Architectural Institute of Korea (대한건축학회)
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Compressive Strength of Hollow-Precast Concrete Composite Column under Uniaxial and Eccentric Axial Load

중심과 편심축력을 받는 중공 프리캐스트 콘크리트 합성기둥의 압축강도

  • 이승준 (한국교통대학교 건축공학과) ;
  • 서수연 (한국교통대학교 건축공학과) ;
  • 김강수 (서울시립대학교 건축학부)
  • Received : 2014.09.09
  • Accepted : 2015.01.14
  • Published : 2015.02.28
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Abstract

In this paper, in order to evaluate the applicability of KBC formula in calculating the strength of hollow-precast concrete (HPC) column for design purpose, a compressive capacity was evaluated through the concentric and eccentric test for the columns with various material strength and hollow size, respectively. Based on the test result, the suitability of code formulae was checked and the lateral confining effect of HPC composite column was also evaluated by using Mander's stress-strain relationship. Also, nonlinear sectional analysis process was performed. As a result, it was found that the strength of the HPC composite column could be suitably predicted by using KBC code formulae for design purpose. In the calculation of the compressive strength of the column by using Mander model considering the lateral confining effect of hoop, the confining effect of it in HPC was less than that in reinforced concrete column and changed corresponding to the concrete strength ratio between PC and CIP (Cast-In-Place). The effect decreases when the concrete strength of CIP is not less than that of PC. The flexural-compression capacity of HPC composite column can be suitably evaluated by using the effective strength of concrete.

Keywords

Acknowledgement

Supported by : 건설교통부, 한국연구재단

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