Research Of Building Techniques For Integrated Transport Network Model

With the diversified development of transportation, to satisfy the demand of production and the demand of going around requires the cooperation of all kinds of transportation. Integrated transportation system is composed of road, waterway, railway, airline and pipeline. These transportation modes construct the integrated transportation networks under certain rules. With the development of multimodal transportation, digital model building technique for integrated transport should be researched, which has great significance. This paper designed a model of integrated transportation networks, aiming to integrate multimodal transportation networks. Furthermore, this paper focused on the construction technique of the model, which is the technique to generate the geometric data and topological relationships that can be processed by computer from basic transportation data.First, the composition of integrated transport network and the characteristics of different transport modes are analyzed. The expression of different transport networks and the connection and transformation between them is discussed. In addition to this, the organization of mode communication node is also discussed. Based on the research, the conceptual model and logical model of integrated transport network are designed.Second, the implementation algorithms of the model is studied based on the source of data of traffic in Jiangsu Province. This paper researched the process technique of geometric form of data, which includes broken lines and the geometric noise. Then, this paper proposed a series of check algorithm, which can check and process the topological structure including redundant lines and dangle points automatically. Then, this paper researched on the technique of implementation of topological relationship for integrated transportation networks and proposed the topological structure generation algorithm, including processing segments and node matching。At last, this paper proposed multi-level path analysis algorithm based on the research of the transportation networks, which is used to verify the practicability of the modelFinally, based on the theoretical research and key technology, the test program of modeling integrated transport network is designed. With ArcGIS second-development platform and the.Net development platform, the test program is development, which integrates networks of different traffic mode and applies the model to path analysis.