Research On Signal Equipments Layout Planning Of Urban Rail Transit Based On Topological Graph Theory Strategy

With the sustained and rapid development of China’s economy, the city size expand increasingly, ground transportation in many cities has been unable to meet the growing passenger demand. As urban rail transit system has characteristics such as large carrying capacity, fast and convenient, not impede existing traffic roads, so many cities have already established the strategy with rail transit as the backbone of public transport.In urban rail transit, reasonable layout signal equipment is important working link to ensure the safe operation of trains. In the process of urban rail transit signal project implementation, due to large capacity of signal equipment and cumbersome procedures, the schedule reduces greatly. Based on this background, this thesis uses signal equipments as the research object, designs metro signal equipments layout application model of urban rail transit, so as to improve the engineering efficiency.This thesis analyzes and studies the relationship between the station plane and signal devices, using related strategies of graph topology theory to design reasonable vector graphics data topology structure for signal equipments layout of the urban rail transit, achieving the organization of information and data, it is convenient to expand the development and research of the application function. Comprehensive analysis and study of the factors affecting the urban rail transit signal equipments layout, according to the needs of project implementation, researching the signal equipments layout of the urban rail transit, summarizing the design principles of the signal equipments layout of the urban rail transit systematically.On the basis of information data model, using the decision-making technology to design the layout model of urban rail transit based on topology search. The thesis builds the decision knowledge base according to the equipments layout principle, through comprehensive traversal search algorithm and decision-making technique to achieve the automatic layout function of main signal equipments. In order to expand the application function, designing route generation algorithm based on graph search strategy, which achieved the automatic generation function of metro route Excel table of the urban rail transit.Simulation results show that the method used in the thesis can effectively achieve signal equipments layout, the model has some practical value in reducing working strength of signal projects.