Multi-source Data Integration And Model Data Management In 3d Rapid Design Of Urban Rail Transit Line

In recent years,urban rail transit has been developing rapidly,it has become the most effective way to solve the problem of urban congestion.As the "leading" of the whole project construction,the design of 3D line selection has been paid more and more attention,However,the design of three dimensional fast line selection pays great attention to the environment,geology and landscape of the two sides of the line,The construction of these scenarios requires a large number of three-dimensional basic data,and each data because of its acquisition mode or the use of software differences,the storage structure or format of the different data caused the multi-source,which caused the sharing of data adverse.In addition,in the course of line selection design,with the construction of 3D scene and line model,a large number of model data will appear.The traditional two-dimensional data management methods can not meet the basic requirements of 3D fast line selection design.Therefore,it is of great practical significance to establish a Multi-Source Data Integration and 3D model data management system.In this paper,from the aspects of multi-source data integration,model data management,data transmission of each module to research on multi-source data integration and model data management in 3D rapid design of urban rail transit line,The main research contents are as follows:(1)Integrating multi-source scene data.Through the research and analysis of the data structure characteristics of the scene model data such as terrain,landform,geology and underground pipeline data,the multi-source scene data is integrated.(2)Management of model data.Analyzes the characteristics of all kinds of model data in the design of 3D fast line selection of Urban Rail Transit and designs the data table,so as to set up the 3D model spatial information database,and set up the query function,such as query,update,modify,delete and so on.(3)The realization of data transfer interface between each module of the system.Through the analysis of the data needs of each module in the system,with VS 2013 C# interface settings to achieve the transfer of data between the various modules.(4)Example verification.Taking Zhongshan Road of Shijiazhuang metro line as an example,through the main functions of terrain splicing,cutting display,data management and interface implementation are verified,and then textual research on the theory and method of the research.