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Study on the Maintenance Cost of Railway Infrastructure Using Line Classification and TMV Data

선로등급 및 검측차 검측정보를 고려한 철도시설 유지보수비용 산정에 관한 연구

  • Kim, In Kyum (Advanced High-speed Railroad Systems Research Division, Korea Railroad Research Institute) ;
  • Lee, Jun S. (Advanced High-speed Railroad Systems Research Division, Korea Railroad Research Institute) ;
  • Choi, Il Yoon (Advanced High-speed Railroad Systems Research Division, Korea Railroad Research Institute) ;
  • Lee, Hoo Seok (Advanced High-speed Railroad Systems Research Division, Korea Railroad Research Institute)
  • Received : 2017.01.25
  • Accepted : 2017.03.08
  • Published : 2017.04.30

Abstract

During the feasibility study of new rail lines, maintenance cost of railway infrastructure has mostly been estimated based on the track length and on simplified parameters; however, the estimation reliability can be improved by employing the correction factor from UIC 715, as well as the line classification in UIC 714. The correlations between maintenance cost and various parameters such as weighted track length based on line classification, radius of curvature, gradient and worn -out rate have been analyzed according to the case studies. Prediction of the maintenance cost has been carried out using the cost data, which were representative of the whole cost data; as a result, it was demonstrated that a cost model based on the line classification and the correction factor was more reliable than the existing models. Furthermore, possibilities of using data from both the track measurement vehicle and from the maintenance information system, which are under development, have been investigated and, based on this investigation, a combined cost model using line classification, radius of curvature, gradient and worn-out rate, among other factors, will be proposed in the near future.

신규 철도노선의 건설을 위한 타당성 검토시 관련 유지보수비용은 궤도연장을 기반으로 여러 요인을 단순화하여 예측하고 있으나 UIC 714의 선로등급 및 UIC 715의 유지보수비용 영향요인 개념을 반영하는 경우, 비용산정결과의 신뢰도를 향상시킬 수 있다. 따라서 본 연구에서는 국내외 사례를 기초로 유지보수비용과 선로등급에 따른 가중 철도연장, 곡선반경, 종단경사 및 노후도 등과의 상관관계를 분석하였다. 이를 위하여 유지보수 위탁기관의 각 지역본부별 유지보수비용 중 대표성이 있는 자료를 기반으로 비용예측을 수행하였으며, 이 결과 기존노선의 선로등급 및 등급별 비용계수에 따른 유지보수비용 산정방안이 기존 적용방법에 비해 합리적임을 밝혔다. 또한 현재 개발중인 고속 종합검측차의 검측데이터 및 철도시설물의 이력정보를 고려한 비용산정 방안을 함께 고려하였으며 이를 기반으로 선로등급, 곡선반경, 노후도 및 선로 기울기 등을 종합적으로 고려한 유지보수비용 산정모델의 개발이 가능할 것으로 예상된다.

Keywords

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