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Marshalling disintegration and marshalling subsystem operational reliability study

Author: ChenLiang
Tutor: KouZuoHua
School: Southwest Jiaotong University
Course: Safety Technology and Engineering
Keywords: Disintegration and marshalling subsystem Operational reliability Queuing model Stochastic processes
CLC: U291.4
Type: Master's thesis
Year: 2010
Downloads: 103
Quote: 2
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Abstract


At this stage, China's railway network in terms of traffic for the marshalling yard, showing a train streams are concentrated in different time periods to reach and send intensive features, such transport imbalance marshalling work on the reliability of a higher requirements. In marshalling system, subsystem complete disintegration and marshalling marshalling system's main function is the disintegration and marshalling of freight trains, and the disintegration and marshalling subsystem operational reliability and is a measure of the disintegration and marshalling marshalling yard capacities and uninterrupted operation important indicator, so the work of disintegration and marshalling subsystem reliability level for achieving marshalling the timeliness, safety and the smooth flow of the railway network plays a vital role. To study the work of disintegration and marshalling subsystem reliability, need to be clear about its definition. According to the system of technical ideas and processes for marshalling marshalling functions of each subsystem and queuing features are described, while the use of system reliability theory, the research object, using the condition that the time required function four-pronged approach, specific describes the disintegration and marshalling subsystem reliability, based on the disintegration of this sub-group is defined operational reliability, the operational reliability of the disintegration subsystem refers to the actual working process, the disintegration time subsystem complete disintegration of operations to ensure uninterrupted access to reach the train is the ability to reach the venue. Marshalling subsystem operational reliability refers to the actual work process, marshalling subsystem timely completion of marshalling operations to ensure uninterrupted operation disintegration ability. Using queuing theory and stochastic process theory, the number of vehicles in accordance with the input subsystem and subsystems different relationships between the capacity of the work of disintegration and marshalling subsystem reliability of a quantitative analysis. In this process, using the phase method and the update process, on the subsystem into \Then two subsystems some may appear in the premise queuing model, the reliability of its work were established specific formula, the queuing model are: M/M/1 / ∞, Ek/M/1 / ∞, M / Er / 1 / ∞, Er/Ek/1 / ∞, M / M / C / N / and M / Ek / C / N. Finally, the case analysis. First collected downstream of Zhengzhou North Station disintegration and marshalling subsystem on the system input traffic and operation time of the actual data as a basis, the use of methods of mathematical statistics collating data presented input traffic and the statistical distribution of working time and verify assumptions mentioned assumption holds. Secondly, according to the formula has been established, the sub working group disintegration and reliability of the calculation. Finally, from the subsystem capacity and operating organization and other aspects of its work to improve the reliability of the measures discussed.

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CLC: > Transportation > Rail transport > Rail transport management projects > Station and terminal > Marshalling yard
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