An Analytical Study on Ductility of Reinforced Concrete Columns under Tension Controlled Region

인장지배영역에서의 철근콘크리드 기둥의 연성에 관한 해석적 연구

  • 손혁수 (정회원, 영남대학교 토목공학과) ;
  • 김준범 (정회원, 영남대학교 토목공학과) ;
  • 이재훈 (정회원, 영남대학교 토목공학과)
  • Published : 1997.10.01

Abstract

Design strength of structural members could be determined by applying a strength reduction factor to nominal strength. At the beginning point of the transition region for the strength reduction factor, P=0.1$\sigma$$_{ck}A_g$, only sectional area and concrete strength are adopted as the variables of P=0.1$\sigma$$_{ck}A_g$. Therefore, P=0.1$\sigma$$_{ck}A_g$ is the empirically adopted which does not consider steel ratio, steel yielding stress, and steel arrangement. So, this research was perpormed the computer program for the analysis of axial force-moment-curvature relationship of reinforced concrete columns by sectional behaviour nonlinear analysis using a concrete compressive stress-strain curve, in order to investigate the ductility of reinforced concrete columns. As a result, ductility indicies of axial force, P=0.1$\sigma$$_{ck}A_g$, represented the lack of consistency of the indicies value for the various sections.

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