Reasearch On The Planning Method Of Small And Medium Railway Junction Terminal Layout

With the expansion of railway network scale and the increase of network density in China,scientific and rational planning and design of railway junction terminal is becoming increasingly important.Although the small and medium-sized railway junction terminal has a lower position in the road network,its size and the volume of passengers and freight are smaller,it is also an important factor affecting the integrity and systematicness of the railway network.Studying the planning method of small and medium-sized railway junction terminal is also helpful to optimize transportation resources and improve the efficiency of terminal operation organization.Because of its different position from the large railway junction terminal,its planning ideas and methods are also different.It is also important to study the planning methods of small and medium-sized railway junction terminal to improve the planning methods of the terminal.On the basis of relevant research at home and abroad,this paper systematically studies the planning and evaluation methods of small and medium-sized railway junction terminals.In this paper,the characteristics of small and medium-sized railway junction terminals are sorted out,the scope and specific standards of small and medium-sized railway junction terminals in China are determined,and the planning contents and influencing factors of small and medium-sized railway junction terminals are given.This paper summarizes and compares the commonly used railway traffic forecasting methods in the actual railway planning and design projects,and puts forward a suitable forecasting method for the transport demand of small and medium-sized railway junction terminals combined with the characteristics of the traffic volume of small and medium-sized railway junction terminals.From the perspective of comprehensive cost of planning,aiming at the minimum comprehensive cost of railway junction terminal construction,operation and passenger and cargo distribution in terminal cities or regions,a layout planning model of railway junction terminal is established.The evaluation index system of layout planning of small and medium-sized railway junction terminals is established,and the quantitative method of the index is given.A comprehensive evaluation method of small and medium-sized railway junction terminals based on analytic hierarchy process is established.Taking Wuzhou railway junction terminal planning as an actual case,based on the actual economic and transportation data,as well as the existing railway stations and traffic volume,the paper predicts the passenger and freight volume of Wuzhou in the direction of 2030.By using the implicit enumeration method and Dijkstra algorithm,the preliminary and comparative schemes of Wuzhou railway junction terminal layout planning are obtained.Through the comprehensive comparison of different schemes,the comprehensive optimal scheme is obtained and verified.The validity of the model and the algorithm is discussed.