Research On The Optimization Of The Layout Of The Comprehensive Maintainance Organnization And The Opening Of Skylights For High-speed Railways Under The Condition Of Long Remps In The Alpine Region

The installation of comprehensive maintenance skylights for high-speed railways is an important part of the transportation organization,which affects the line passing capacity,maintenance efficiency in the skylights,and driving safety.Increased train speed,increased traffic density,and harsh line environment put forward higher requirements for skylight installation.At present,there is no mature experience in the layout of railway operation and maintenance organization and the opening of skylight under the condition of long and steep slopes in alpine regions in China.Based on the introduction of comprehensive maintenance skylight,this paper summarizes the research status and development trend at home and abroad,and puts forward the suggestion that the maintenance of high-speed railway under the condition of long and steep slopes in alpine regions should adopt the mechanical method,combined with the characteristics of Alpine long ramp line,this paper puts forward the layout method of comprehensive maintenance area and the scheme of skylight opening,the main research contents are as follows:(1)Introduce the composition and functions of the maintenance organization,analyze the principle of maintenance organization layout and the principle of skylight installation,classify the skylight form and explain the characteristics of different skylight forms,and propose that high-speed railways can meet the requirements of passenger trains under the condition of long ramps in alpine regions.Rectangular skylights should be installed from the perspective of maintenance safety under the conditions of reasonable arrival time range,easy adjustment of delays,and passing capacity requirements.(2)Based on the analysis of the influence of maintenance area layout on the skylight time,the paper deeply analyzes the skylight setting time of high-speed railway in plain area.Combined with the influence of Alpine long ramp line on maintenance operation,the paper puts forward the methods of online maintenance vehicle in advance and meticulous maintenance organization.Finally,the paper puts forward the suggestion that the skylight opening time of high-speed railway should not be less than 4h under the condition of Alpine long ramp.(3)By analyzing the influencing factors of maintenance area layout,the calculation method of maintenance area jurisdiction is obtained,the layout model of high-speed railway maintenance area is established,and MATLAB is used to solve the model,and finally the layout scheme of maintenance area is obtained.Under the condition that the layout of maintenance area is determined,the graphic method is used to design and solve the best scheme of maintenance skylight opening period.(4)Combining the above model and algorithm,AH Alpine railway is taken as an example for case analysis,and the opening mode of ah Alpine skylight and the layout scheme of B-E section maintenance area are obtained.