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2022 Vol.38, Issue 12 Preview Page
Investment Prioritization Method for Steep Slope Retaining Wall Considering the Disaster Risk and the Repair and Reinforcement Cost

재해위험도와 보수보강비용을 고려한 급경사지 옹벽의 투자 우선순위 결정방법 연구

Jae-Soon Choi1
,
Yean-Ju Shin2
,
Woo-Hyun Baek3*
최 재순1
,
신 연주2
,
백 우현3*
1Member, Prof., Dept. of Civil Engrg., Seokyeong Univ.
2Student, Dept. of Civil Engrg., Seokyeong Univ.
3Graduate Student, Dept. of Civil Engrg., Seoultech Univ.
1정회원, 서경대학교 토목건축공학과 교수
2비회원, 서경대학교 토목건축공학과 학사과정
3비회원, 서울과학기술대학교 토목공학과 박사과정
*Corresponding Author
31 December 2022. pp. 79-89
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Abstract

Every summer in our country, an accident occurs, in which the retaining wall on a steep slope collapses due to torrential rain. According to the data on the results of steep slope risk assessment in 2019, over 780 retaining walls are below grade C; therefore, preparing for countermeasures is urgent. However, due to the limited budget for the repair and reinforcement of these retaining walls, it is necessary to discuss the investment prioritization. In this study, a prioritization method was proposed at the network and project levels along with the review of the revised criteria of disaster risk assessment in the steep slope retaining wall, and an application research in the network level was conducted for six retaining walls. Moreover, it is proposed that the priority index was determined by using the actual cost for repair and reinforcement in determination of the project level prioritization.

Keywords
Disaster risk assessment
Priority determination of network
Priority determination of project level
Retaining wall

매해 여름, 우리 나라에서는 집중호우로 인해 급경사지 옹벽이 붕괴되는 사고가 발생하고 있다. 2019년 급경사지 위험도 평가결과에 대한 데이터를 보면, 780여개소의 옹벽이 C등급 이하로 이에 대한 대책마련이 시급한 실정이다. 그러나, 이러한 옹벽에 대한 보수보강 예산이 한정적이므로 투자 우선순위에 대한 논의가 필요하다. 이 연구에서는 개정된 급경사지 옹벽의 위험도 평가기준에 대한 고찰과 함께 네트워크 레벨 및 프로젝트 레벨에서의 우선순위방법을 제안하고 이에 대해 6개 옹벽을 대상으로 적용성 검토를 수행하였다. 이때, 프로젝트 레벨에서의 우선순위 결정에는 실제 투입된 보수보강비용자료를 이용하여 우선순위 지수를 결정하였다.

References
1
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2
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3
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www.yna.co.kr : photos of retaining wall collapse.
Information
  • Publisher :The Korean Geotechnical Society
  • Publisher(Ko) :한국지반공학회
  • Journal Title :Journal of the Korean Geotechnical Society
  • Journal Title(Ko) :한국지반공학회 논문집
  • Volume : 38
  • No :12
  • Pages :79-89
  • Received Date : 2022-11-15
  • Revised Date : 2022-12-01
  • Accepted Date : 2022-12-02
  • DOI :https://doi.org/10.7843/kgs.2022.38.12.79
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