철도차량 경량화에 따른 운영기관의 경제적 효과 분석 연구

초록

This article deals with how to evaluate the operator's economical benefit by light-weighting of rolling stock. The representative economical effects are energy saving and the reduction of rail maintenance cost. We propose a method to calculate the two economical effects and real case studies are conducted. The correlation equation between the weight and the energy consumption is proposed through analysing real operating and test data at line 2 and 3 in Seoul Metro. The reduction of rail maintenance cost is calculated by the reduce of the frequency of the preventive maintenance works in the existing rail maintenance policy of Seoul Metro.