Optimal Location of Submain Tracks on an Urban Railway Line

作     者：Oh, Suk-Mun Kim, Kyung Min 

作者机构：Korea Railroad Res Inst Transport Syst Res Team 176 Cheoldobangmulgwan Ro Uiwang Si 16105 Gyeonggi Do South Korea Myongji Univ Dept Ind Management & Engn 116 Myongji Ro Yongin 17058 Gyeonggi Do South Korea 

出 版 物：《JOURNAL OF TRANSPORTATION ENGINEERING PART A-SYSTEMS》 (J Transp Eng Part A Syst)

年 卷 期：2020年第146卷第9期

核心收录：

基　　金：Basic Science Research Program through the National Research Foundation of Korea (NRF) [2019R1G1A1085191] R&D Program of the Korea Railroad Research Institute 

主　　题：Submain tracks (SMTs) Optimal location Urban railway Mixed-integer programming 

摘      要：Determining the location of submain tracks (SMTs) or sidings to accommodate flexible operation is a critical issue in supporting construction investments and meeting passenger preferences. This project considered the problem of calculating the optimal location of SMTs. The objective was to minimize the sum of the construction costs for the SMTs and the total delay cost for passengers. We introduced properties for two train types. Additionally, we developed a mixed-integer model for multiple train types. We propose a procedure for using our model to determine the locations of SMTs for various headways and traffic mixes, and conducted numerical experiments to verify its performance. The results confirmed that our procedure is practical for an urban railway because the average total delay does not increase by more than about 55% compared with the optimal solution for any operational scheme. (c) 2020 American Society of Civil Engineers.