Journal of the Korea Concrete Institute (콘크리트학회논문집)

Korea Concrete Institute (한국콘크리트학회)
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Performance Based Design of Coupling Beam Considering Probability Distribution of Flexural and Shear Strength

휨강도와 전단강도의 확률분포를 고려한 연결보의 성능기반설계

  • Kim, Yun-Gon (Hyundai Engineering & Construction, R&D Division) ;
  • Cho, Suk-Hee (Hyundai Engineering & Construction, R&D Division)
  • 김윤곤 (현대건설(주) 연구개발본부) ;
  • 조석희 (현대건설(주) 연구개발본부)
  • Received : 2012.12.13
  • Accepted : 2013.08.20
  • Published : 2013.10.31
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Abstract

In this paper, performance based design of coupling beam using non-linear static analysis is proposed considering probability distribution of flexural and shear strength in order to develop flexural hinge. This method considers post-yielding behavior of coupling beam and stress redistribution of system. It can verify the reduced effective stiffness to meet the current design requirement based on linear analysis. It also evaluates the lateral displacement under service load (un-factored wind load) properly. In addition, it can optimize the coupled shear wall system by taking stress redistribution between members into account. For a simplified 30-story building, non-linear static (push-over) analysis was performed and the structural behavior was checked at performance point and several displacement steps. Furthermore, system behavior according to the amount of reinforcement and depth of coupling beam was explored and compared each other.

이 연구에서는 휨힌지를 유도하기 위해 휨강도와 전단강도의 확률분포를 고려한 연결보의 성능기반설계법을 제안하였다. 이 방법은 연결보의 항복 이후 거동과 시스템의 재분배를 반영하므로 현행 선형해석 기반의 연결보 설계에서 임의로 저감된 유효강성의 적합성을 검증할 수 있으며, 사용하중에서의 연결보의 실제 강성을 반영하여 횡변위를 평가하는데 적정하다. 또한 부재간 내력 재분배를 고려할 수 있어 병렬전단벽의 최적설계가 가능할 것으로 판단된다. 이 설계법의 적합성을 검증하기 위해 단순화된 30층 오피스 건물을 대상으로 비선형정적해석을 수행하고 성능점 및 각 스텝의 구조성능을 검토하였다. 또한 사용하중의 부재강성을 평가하고 극한하중의 부재 강성을 사용한 시스템의 거동과 비교하였다. 또한 연결보의 다양한 배근 및 보 춤에 따른 시스템의 거동특성을 비교, 분석하였다.

Keywords

References

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  1. Hysteretic Behavior Evaluation of a RC Coupling Beam using a Steel Fiber and Diagonal Reinforcement vol.27, pp.3, 2015, https://doi.org/10.4334/JKCI.2015.27.3.291