Application Research Of Gis In Bridge Management System

With the continuous development of road network construction, traffic grows rapidly. Large overloading vehicles increasingly appear, leading to a decrease in bridge function and an increase in bridge disease, so more and more attentions are paid to bridge management. At the same time, Geographical Information System(GIS) is becoming prefect, and it has been an important research field to apply the power of GIS to bridge management systems. A useful attempt is made in this paper.(1) Making a study of component GIS. Component GIS is decomposed into a number of control modules, each control completes a specific function, and GIS or non-GIS controls integrate the final application with visual developing tools. As a typical control, ArcObjects provides users with capability of secondary development and expanding function. So, the user can easily develop powerful GIS applications with ArcObjects.(2) Making a study of spatial databases. Spatial data model Geodatabase can seamlessly store spatial features; Spatial data engine ArcSDE can store spatial data in relational database management system RDBMS. As a result, storage, management and access of spatial and non-spatial data are accomplished in RDBMS, so are storage and management of massive data.(3) Designing and implementing the bridge management system based on GIS. Design its structure,interface and database after analyzing the bridge management system. Using Visual C++ 6.0 as programming language and ArcObjects as secondary platform, develop the system and implement its functional modules. Finally, carry out its user interface testing and function testing.Applying GIS to bridge management systems, the integrated storage of spatial distribution and attribute data can be made, their dynamic management also acquired though querying and searching. Whether or not to possess and apply advanced GIS functions has become an important indicator of the management level.