이종(異種)열차 혼용 운행 시 저속열차 서비스 수준 평가 연구
Evaluation of the level of service of low-speed trains under heterogeneous train operations
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본 연구는 이종열차 혼용 운행 시 저속열차의 대피 지연시간을 유전자 알고리즘을 활용한 시뮬레이션방법으로 분석하여 철도노선용량 이용률을 기준으로 서비스수준(LOS)의 척도를 제시하였다. 각 이종열차의 정차역, 정차시간, 운행시간, 속도를 다르게 적용하였다. 고속열차가 저속열차보다 운행회수가 많으면 저속열차의 LOS는 저하되며, 각 Case에 따라 저속열차 LOS를 평가하여 열차운행 서비스를 고려한 운행회수를 도출하였다. 향후 본 연구를 토대로 철도건설의 기본계획에서 실질적으로 적용할 수 있고 부본선 위치 변화 및 열차 운행 회수의 조정 등 다양한 열차운영환경에서 지속적인 연구로 철도계획 및 열차운영의 최적화를 도모할 수 있을 것으로 기대한다.
Abstract
This study develops a measure of the LOS based on the utilization rate of railway line capacity by analyzing the evacuation delay time of low-speed trains during heterogeneous train operations. The stopping station, stopping time, operating time, and speed of each heterogeneous train are applied differently. And considering the number of train operations in three cases, the LOS of low-speed trains was analyzed. If the high-speed train operates more frequently than the low-speed train, the LOS of the low-speed train decreases. By evaluating the LOS of the low-speed train according to each case, it was possible to derive the operating frequency considering the train operation service. The results of this study are anticipated to be practically applicable to railway construction planning in the future. Therefore, railway planning and train operations can be optimized in various train operating environments through continuous research, such as changing the location of the sub-main track and adjusting the number of train operations.
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