Journal of Jilin University(Engineering and Technology Edition) ›› 2022, Vol. 52 ›› Issue (12): 2864-2873.doi: 10.13229/j.cnki.jdxbgxb20210410

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Layout optimization of auxiliary stopping areas for normal high⁃speed maglev based on scenario division

Peng-zi CHU1,2(),Yi YU2(),Dan-yang DONG2,Hui LIN2,Hua-hua ZHAO2   

  1. 1.Key Laboratory of Road and Traffic Engineering，Ministry of Education，Tongji University，Shanghai 201804，China
    2.Maglev Transportation Engineering R&D Center，Tongji University，Shanghai 201804，China
  • Received:2021-05-10 Online:2022-12-01 Published:2022-12-08
  • Contact: Yi YU E-mail:cpz_myhk@163.com;12164@tongji.edu.cn

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Abstract:

The layout process of auxiliary stopping areas （ASAs） for normal high-speed maglev is facing the challenges of various demands and complex constraints. Focusing on ensuring the safety of maglev train operation with fewer ASAs， a scenario division-based method for ASA layout was proposed. Firstly， the general scenarios of ASA layout were divided into train operation direction， train speed profile， demand priority section and demand restriction section， and the optimization models of ASA layout were constructed. Then， taking that each ASA is as far as possible from the terminal station as the criterion， the optimization rules for different scenarios were designed， and then a heuristic algorithm for solving the optimization model was proposed. Finally， numerical experiments were carried. The results illustrate that the proposed method can efficiently obtain reliable and economical layout schemes. The demand of ASAs increases as the train stepping redundancy time increases. When setting up ASAs for bidirectional operation， the demand for ASAs can reduce by using the ASAs in the opposite direction.

Key words: maglev transportation, auxiliary stopping area, scenario division, train safety, cost saving

CLC Number: 

  • U237

Fig.1

Idea for ASA layout optimization"

Fig.2

ASA spacing considering single speed profile"

Fig.3

ASA adjustment considering multiple speed profiles"

Fig.4

Schematic diagram of demand priority section"

Fig.5

Schematic diagram of demand restriction section"

Fig.6

Reference ASA adjustment considering first direction"

Fig.7

Flowchart of layout method based on scenarios division"

Table 1

Line gradient"

区段起点位置/m终点位置/m坡度/%
105 3000.000
25 3006 1300.302
36 1306 3000.450
46 3006 970-0.250
56 9708 8750.100
68 87511 6150.000
711 61513 3850.353
813 38514 205-0.369
914 20519 3150.000
1019 31520 0254.117
1120 02523 635-0.118
1223 63527 2850.000
1327 28528 5350.239
1428 53530 7350.000
1530 73539 6500.225
1639 65041 530-0.432
1741 53042 880-0.597
1842 88054 4800.000
1954 48056 0400.382
2056 04059 210-0.689
2159 21061 1400.312
2261 14063 5000.000

Table 2

Demand restriction sections"

区段起点位置/m终点位置/m区段起点位置/m终点位置/m
15 1005 5001028 33528 735
25 9307 1701130 53530 935
38 67510 3061231 60032 600
411 41511 8151339 45039 850
513 18513 5851441 33043 080
614 00514 4051552 00053 100
719 11520 2251654 28054 680
823 43523 8351755 84059 410
927 08527 485

Fig.8

Layout scheme for unidirectional operation"

Fig.9

Layout scheme for bidirectional operation considering first direction"

Fig.10

Layout scheme for bidirectional operation considering two directions separately"

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