The Scheme Of Comprehensive Maintenance Window For Beijing-guangzhoug High-Speed Railway

Comprehensive maintenance window has a great influence on the maintenance efficiency, line capacity, the operation of Sunset-Departure and Sunrise-Arrival train and train operation safety. How to reasonable set the window in train diagram is one of the most important issue to be solved in High-speed railway transport organization work. With a characteristic of high speed, high service frequency and high maintenance standards, the High-speed railway has a higher requirement to the setup of maintenance. Based on the maintenance overseas and domestic existing railway, the window setting elements and night train operation demands of Beijing-Guangzhou high-speed railway is analyzed, and the feasibility of opening maintenance window in day time is studied. And the calculation method for carrying capacity of Sunset-Departure and Sunrise-Arrival train in different forms is proposed to set the rational scheme of comprehensive window. The mainly work of this paper is listed below:(1) Based on the actual investigation and theory analysis, the Beijing-Guangzhou high-speed railway comprehensive maintenance window setting elements are analyzed. This paper expounds the time requirements of each work in the skylight maintenance and comparatively analyzes the vertical rectangle skylight and segmented skylight, then finally put forwards several window schemes for the Beijing-Guangzhou high-speed railway.(2) Starting with the definition of Sunset-Departure and Sunrise-Arrival train, this paper analyzes the night train operation feature, including the operation range and the reasonable arrival and departure time zone of Beijing-Guangzhou high-speed railway and cross-line train trains.(3) Based on the theoretical analysis method and Actual Train Graphs, this paper discusses the through capacity affected by the daytime window, and analysize the train arrival and departure time zone under different window length so as to demonstrate the rationality of the Beijing-Guangzhou daytime window scheme.(4) This paper explores the feasibility of evening-morning trains’ operation under the vertical rectangle skylight and segmented skylight. Firstly, present the calculation method of waiting train number before skylight time, and then use the graphical method to compare the capacities under the different window schemes so as to obtain the best. At last, some safeguard measures are pointed out to guarantee the effective time of maintenance window.The research results show that the method of using graphical method to analyze carrying capacity under different window scheme has certain credibility, and it can present the best scheme to some extent.