Abstract
Auxiliary stopping area (ASA) is the necessary emergency facility for train safety of the normal high-speed maglev. The study addresses the ASA layout problem of the high-speed maglev operated bidirectionally on single track. First, an optimization model of the ASA layout for unidirectional double-track lines considering train safety, operation efficiency, and construction cost is established, and two basic methods of the ASA layout are investigated based on the distance demand characteristic of ASAs. Then, the ASA layout problem of bidirectional single-track lines is analyzed, and an ASA two-way coordination layout algorithm (ASA-TWCLA) is proposed. Finally, a numerical experiment is carried out. The results suggest that under the premise of train safety and operation efficiency, compared with using the basic methods separately on the two directions, adopting the ASA-TWCLA algorithm can obtain a more economical ASA layout scheme for the same scenario.
Highlights
With the advantages of strong climbing ability, low noise, green, and so on, maglev transportation has attracted more and more attention [1,2,3]
Unlike the wheel-rail transportation system, the driving power of the maglev train comes from the track, and the train does not touch the track during operation [1,2,3,4,5]
The operation control system (OCS) of maglevs needs to have a complete safety protection function. e 2-dimension (2D) speed protection mode, which prevents the train speed from exceeding the maximum speed profile and prevents the speed from falling below the minimum speed profile, is one of the important safety contents for the normal high-speed maglev [1, 6,7,8,9,10]. e auxiliary stopping area (ASA) is the emergency facility equipped with power rails and evacuation exits in the interstation section
Summary
With the advantages of strong climbing ability, low noise, green, and so on, maglev transportation has attracted more and more attention [1,2,3]. Based on the study of Yu et al [6], Jiang et al [13] further discussed an ASA layout method considering train tracking operation. Train safety, line condition, economy, train speed profile, and tracking interval should be considered while setting up ASAs. enlightened by the operation of the Shanghai Maglev Demonstration Line and wheel-rail transportation systems, the research on the ASA layout problem of the normal high-speed maglev should consider the bidirectional operation on a single track. To the best of our knowledge, the ASA layout problem considering train safety, bidirectional operation, line condition, economy, train speed profile, and tracking interval simultaneously has not yet been discussed.
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