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A study on the feasibility evaluation technique of urban utility tunnel by using quantitative indexes evaluation and benefit·cost analysis

정량적 지표평가와 비용·편익 분석을 활용한 도심지 공동구의 타당성 평가기법 연구

  • Lee, Seong-Won (Geotechnical Engineering Research Institute, Korea Institute of Civil Engineering and Building Technology) ;
  • Chung, Jee-Seung (Dept. of Civil Engineering, Dongyang University) ;
  • Na, Gwi-Tae (Dept. of Structural Engineering, Korea Engineering Consultant Corporation) ;
  • Bang, Myung-Seok (Dept. of Transportation System Engineering, Korea National University of Transportation) ;
  • Lee, Joung-Bae (Dept. of Transportation System Engineering, Korea National University of Transportation)
  • 이성원 (한국건설기술연구원 지반연구소) ;
  • 정지승 (동양대학교 건설공학과) ;
  • 나귀태 ((주)한국종합기술 구조부) ;
  • 방명석 (한국교통대학교 교통시스템공학과) ;
  • 이정배 (한국교통대학교 교통시스템공학과)
  • Received : 2018.10.16
  • Accepted : 2018.11.16
  • Published : 2019.01.31

Abstract

If a new utility tunnel is planned for high density existing urban areas in Korea, a rational decision-making process such as the determination of optimum design capacity by using the feasibility evaluation system based on quantitative evaluation indexes and the economic evaluation is needed. Thus, the previous study presented the important weight of individual higher-level indexes (3 items) and sub-indexes (16 items) through a hierarchy analysis (AHP) for quantitative evaluation index items, considering the characteristics of each urban type. In addition, an economic evaluation method was proposed considering 10 benefit items and 8 cost items by adding 3 new items, including the effects of traffic accidents, noise reduction and socio-economic losses, to the existing items for the benefit cost analysis suitable for urban utility tunnels. This study presented a quantitative feasibility evaluation method using the important weight of 16 sub-index items such as the road management sector, public facilities sector and urban environment sector. Afterwards, the results of quantitative feasibility and economic evaluation were compared and analyzed in 123 main road sections of the Seoul. In addition, a comprehensive evaluation method was proposed by the combination of the two evaluation results. The design capacity optimization program, which will be developed by programming the logic of the quantitative feasibility and economic evaluation system presented in this study, will be utilized in the planning and design phases of urban community zones and will ultimately contribute to the vitalization of urban utility tunnels.

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Fig. 1. Graph of quantitative indexes evaluation and B/C analysis for the urban utility tunnel

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Fig. 2. Graph of combined feasibility evaluation score for the urban utility tunnel

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Fig. 3. Graph of combined feasibility evaluation of the urban utility tunnel on high-rank 20 sectors

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Fig. 4. A planning program of urban utility tunnel considering feasibility and economic evaluation

Table 1. Result of a study on the quantitative feasibility evaluation index by AHP analysis (Chung and Na, 2018)

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Table 2. Evaluation items of benefit ‧ cost ratio analysis for the urban utility tunnel (Cho et al., 2018)

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Table 3. Result of a study on the quantitative feasibility evaluation index by AHP analysis

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Table 3. Result of a study on the quantitative feasibility evaluation index by AHP analysis (continue)

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Table 4. Consideration main road-lines and sectors for quantitative indexes and economic evaluation in Seoul

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Table 5. Consideration main road-lines and sectors for quantitative indexes and economic evaluation in Seoul

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Table 6. Quantitative indexes and economic evaluation on high rank 20 sectors

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Table 6. Quantitative indexes and economic evaluation on high rank 20 sectors (continue)

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Table 7. Combined feasibility evaluation of the urban utility tunnel on high rank 20 sectors

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Table 7. Combined feasibility evaluation of the urban utility tunnel on high rank 20 sectors (continue)

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Acknowledgement

Grant : 도심지 소단면(

Supported by : 국토교통과학기술진흥원

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