Study On The System Of Computer Aided Railway Yard Design

It is an important stage between the preceding and the following or railway yard design during the process of construction and reconstruction of railway basic facilities. Computer Aided Design has been increasingly popularized in railway engineering design with the development of railway survey and design technology and computer technology. It is an important measure for shortening design cycle, realizing design standardization, which can greatly relieve design intensity, and it's also useful for schemes comparing and choosing, design process automating, and it is meaningful for speeding up design process and improving design quality by applying CAD technology. Based on theories and methods of the system design, the article has maken an analysis, research and design on the system of computer aided railway yard design.First of all, by way of system analysis and system design, according to theories and means of software engineering, the article has systematic analysis and discussion on the aim, principle, capability, function, implementation method, critical techniques and overall structure of the system, then gets a chart on its structure and a chart on its data flow;Secondly, the article has a detailed dissertation on the plane design of the railway yard. After putting forward the design idea of the system, it has function design, structure design and the analysis on data flow, then concretely designs the data structure of the primary graphic element of the railway yard plan, establishes the relationship of each graphic element in the plane throat regions and the corresponding optimization model on the basis of the analysis on the topology structure of graphic element and the layout mode between switches;Finally, the article establishes digital terrain model, makes scheme design, function design and program flow design on railwayyard's profile and cross section design subsystem.