Research On Signal Technology Of "Three Networks Integration" Of Rail Transit

High speed railway and urban rail transit have formed an efficient transportation network respectively.With the development of urban agglomeration and regional integration,the demand for inter city or inter city transportation in the region is increasing.As an effective means to supplement the shortage of inter city high speed railway network and urban rail transit network,inter city railway and inter city rail transit have developed rapidly in recent years.However,due to the influence of technology limitation and management system,most of the trunk railway,intercity railway,urban rail and urban rail are still running in their own networks.The interconnection between the networks is realized through transfer,without giving full play to the overall comprehensive benefits of the rail transit network,and there is still room to improve the attraction of passenger travel.A large number of high-frequency travel needs in the region put forward new requirements for the integration of intercity railway,urban rail and urban rail network.This research is a part of the project "railway passenger and freight transport efficiency and service level improvement technology" of the national key research and development plan advanced rail transit special project "railway comprehensive efficiency and service level improvement technology under the condition of high-speed railway network".By analyzing the research direction at home and abroad and the existing technology reserve of intercity,city and city tracks,the paper focuses on the research of "three networks integration" technology route in the direction of train operation control system.This paper analyzes the technical characteristics and equipment elements of CTCS system and CBTC system of existing national railway,and puts forward the technical scheme of mutual integration of CTCS2 and CBTC.This paper divides the Intercity Track and the urban area track into two sections,and puts forward the train operation control scheme to adapt to different lines or sections according to the different requirements of travel speed and passing capacity of different lines or sections,so as to provide the signal system technical means for "three networks integration".Through the simulation calculation of the selected lines,the transport efficiency indexes of CTCS2,CBTC and CTCS2 + CBTC are analyzed.The analysis shows that under the different line conditions and road section characteristics of intercity rail,urban rail and urban rail,the comprehensive transportation capacity and transportation service level can be effectively improved by selecting the scheme of separate or integrated network to realize cross line operation.The economic feasibility of "three networks integration" of rail transit is verified.