KSCE Journal of Civil and Environmental Engineering Research (대한토목학회논문집)

Korean Society of Civil Engeneers (대한토목학회)
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Design of Economical Steel Ratio in RC Flexural Members

RC 휨부재의 경제적 철근비 설계

  • 정제평 (호남대학교 토목환경공학과) ;
  • 이창기 (호남대학교 토목환경공학과) ;
  • 유희중 (호남대학교 토목환경공학과)
  • Received : 2014.08.08
  • Accepted : 2014.12.14
  • Published : 2015.02.01
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Abstract

This paper is on a practical method for determination of the economical steel ratio in RC flexural members with an equal safety factor. The cost functions of each material and labor are considered to construct the cost function. Then, an equation for determination of the economical flexure steel ratio with the lowest construction cost were proposed. It was found that a relevant steel ratio is recommended to be 0.65~1.0% for designing singly reinforced rectangular beam.

본 연구는 RC 휨부재에서 동일한 안전율을 갖으면서 경제성을 확보할 수 있는 휨 철근비를 결정하는 방법에 관한 실용적 연구이다. 재료비 및 인건비를 고려하여 공사비 함수를 구성하였고, 최저공사비를 유도하는 경제적 휨 철근비를 결정하는 식을 제안하였다. 제안식을 통해 단철근보의 최적 철근비는 0.65~1.0%를 추천하였다.

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References

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