DOI QR코드

DOI QR Code

Benefit·Cost Analysis of Combine Method Using Hollow Precast Concrete Column

중공 PC기둥 복합공법의 편익-비용 분석

  • Kim, Jae-Yeob (Department of Architectural Engineering, Korea National University of Transportation) ;
  • Park, Byeong-Hun (Department of Architectural Engineering, Korea National University of Transportation) ;
  • Lee, Ung-Kyun (Department of Architectural Engineering, Catholic Kwandong University)
  • Received : 2016.06.13
  • Accepted : 2016.08.30
  • Published : 2016.10.20

Abstract

Because of the shortage of construction workers due to The rising labor costs and an aging labor force, construction time has been extended. As a solution, The construction time of high-rise buildings can be reduced by adopting precast concrete construction methods. Most relevant studies have focused on the development and structural analysis of such methods and not on their construction management. Therefore, this study focused on the construction management of the hollow precast concrete column (HPC) method. The objective of this study was to evaluate the performance of HPC formulations through the analytic hierarchy process and benefit-cost analysis. After a gap analysis of the available literature and expert interviews, the evaluation criteria were selected. A questionnaire survey was administered to professionals with ample experience in precast concrete construction for the pair-wise evaluation of the benefit and costs of the HPC method. The results show that the benefits of the HPC method outweighed its costs. Therefore, the HPC method is a suitable substitute for the half-slab method.

최근 인건비 상승 및 노동인력의 고령화로 인한 건설인력의 부족, 초고층 건물의 공기단축과 같은 문제들이 대두되면서 PC공법에 대한 연구가 활발히 진행되고 있다. 하지만 대부분의 연구는 PC공법에 대한 개발과 구조적 해석을 목적으로 하고 있으며, 공사관리 측면의 연구들이 부족한 실정이다. 이에 본 연구는 '중공 PC기둥 복합공법(이하 HPC공법)' 에 대한 공사관리 측면의 연구로서, HPC공법의 계층분석적 의사결정(AHP)을 이용한 편익-비용 분석을 목적으로 하였다. 이를 위해 기존 문헌과 연구 자료를 조사하여 HPC공법의 비교대상 공법을 선정하고, PC복합화 공법의 시공절차와 전문가 면담을 기반으로 한 차이점 분석을 통해서 평가기준을 선정하였다. 편익측면과 비용측면의 평가요소 및 평가항목에 대한 쌍대비교를 위해서 설문조사를 실시하였다. 설문은 PC공사에 대한 충분한 경험을 가진 전문가들을 대상으로 심층면접방식으로 실시하였다. 분석결과, HPC공법은 비용에 비해 편익의 가치가 더 크며 현장에 적용할 경우, 하프슬래브공법과 비교하여 충분한 경쟁력이 있을 것으로 판단된다.

Keywords

References

  1. An SH, Lee UK, Kang KI. A Study on the Proposal about the Improvement of PC in Construction Industry. Journal of The Korea Institute of Building Construction. 2004 Jul;20(7):133-40.
  2. Shin DH. Structural Capacity of the Exterior Beam-Column Joint Using Hollow Precast Concrete Column [master's thesis]. [Chungju (Korea)]: Korea National University of Transportation; 2016. 125 p.
  3. Lee SJ. A Compressive Behavior of Hollow Precast Concrete Column [master's thesis]. [Chungju (Korea)]: Korea National University of Transportation; 2014. 111 p.
  4. Nam BR. Structural Capacity of Mortar-filled Head Splice Sleeve [master's thesis]. [Chungju (Korea)]: Korea National University of Transportation; 2016. 119 p.
  5. Lim WY, Park HG, Oh JK, Kim CS. A Study on the Proposal about the Improvement of PC in Construction Industry. Journal of The Korea Concrete Institute. 2014 Feb;26(1):35-46. https://doi.org/10.4334/JKCI.2014.26.1.035
  6. Shin YS, Choi HB, Lee UK, An SH, Kang KI. A study on Selection of Slab Form Work System for High-rise Building Construction. Journal of Architectural Institute of Korea Structure & Construction. 2006 Feb;22(2):147-54.
  7. Kim JY, Kim JH, A Study on Benefit/Cost Analysis of Form Work Methods for High-rise Residential Buildings, Journal of the Korea Institute of Building Construction, 2010 Aug;10(4) :49-57. https://doi.org/10.5345/JKIC.2010.10.4.049
  8. Kim JY, Kwon YW, Kim JY, A Study on Benefit/Cost Analysis of Re-Bar Connection Methods for Hyper Strength(SD500) Reinforcement. Journal of the Korea Institute of Building Construction. 2008 Apr;8(2):81-7. https://doi.org/10.5345/JKIC.2008.8.2.081
  9. Korea Society of Architectural Hybrid System, korea precast prestressed concrete association. Precast concrete, Seoul (Korea): Kimoondang; 2007. p. 19-30.