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A study on the feasibility assessment model of urban utility tunnel by analytic hierarchy process

계층의사분석 기법을 적용한 도심지 공동구 타당성 평가모델 연구

  • 정지승 (동양대학교 건설공학과) ;
  • 나귀태 ((주)한국종합기술 구조부)
  • Received : 2017.12.06
  • Accepted : 2018.01.04
  • Published : 2018.01.31

Abstract

The urban center of a large city has a high concentration ratio of population, commerce, and traffic. Therefore, the expected effect is high from the introduction of the urban utility tunnel and it also has sufficient economic feasibility considering life cycle cost. Moreover, the construction cost can be greatly reduced if it is included in a large underground development such as a subway or a complex transfer center construction. However, it is not reflected in actual underground development plan. When planning a urban utility tunnel in Korea, it is expected to have difficulties such as the cost of relocation of the existing Life-Line, conflicts among the individual facility institutions, procurement of construction resources and sharing. Furthermore, it is possible to promote the project only if a consensus is drawn up by a collective council composed of all facilities and project developers. Therefore, an optimal alternative should be proposed using economic analysis and feasibility assessment system. In this study, the analytic hierarchy process (AHP) is performed considering the characteristics of urban areas and the importance of each indicator is quantified. As a result, we can support reasonable design capacity optimization using the feasibility assessment system.

국내 대도시의 도심은 인구, 상업, 교통 등의 집중도가 높으므로 공동구 도입에 따른 기대효과가 높고 생애주기비용을 고려한 경제적 타당성을 충분히 확보하고 있다. 더욱이 지하철, 복합환승센터 등과 같은 대규모 지하공간 개발에 포함하여 설치할 경우 초기 건설비용을 획기적으로 줄일 수 있으나 실제 지하개발 계획에 구체적으로 반영되지 못하고 있다. 국내에서 도심지 공동구를 새로이 계획할 경우 기존 Life-Line의 이설비용, 수용 기관별 의견충돌, 건설재원 조달 및 분담 등의 어려움이 예상되며 더욱이 모든 수용기관과 사업시행자로 구성된 공동구 협의회에서 합의를 도출해야만 사업추진이 가능하기 때문에 경제성 분석과 더불어 타당성 평가 시스템을 통한 합리적 의사결정 과정을 통해서 최적 대안이 제시되어야만 원활한 사업추진이 가능하다. 그러므로 도심지 유형별 특성을 고려해서 평가지표와 의사결정 계층구조를 재구성하고 계층의사분석(AHP) 기법을 적용해서 항목별 중요도를 정량화함으로써 타당성 평가시스템을 이용한 합리적인 설계용량 최적화를 지원할 수 있을 것으로 판단된다.

Keywords

References

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