Design Of Highway Pavement Structure Under Overloading Transportation Checked System In Shaanxi Province Base On GIS

With the rapid development of China highway construction, Transport market became more prosperous. Because of the more and more serious phenomenon of overloading transportation in China, there is the primary factor to destroy roads which is the load of axle more than design standard Through the research on the overload situation check system for highway pavement structure, it can help the administration departments to understand the stress of asphalt pavement structure under the overrun and overload, to take measures to road maintenance timely and to guide highway management department to distribute the maintenance funds.Based on the current specification for design of highway asphalt pavement and cement pavement, through the analysis of the domestic and foreign relevant literatures and the features of out-of-gauge traffic, it is concluded that the standard axle load conversion formula under the overrun of the asphalt pavement and cement road surface. The highway pavement structure check system under overload situation was considered and discussed, and then proposed the asphalt pavement structure check system including the pavement deflection value, allowable tension stress, pavement service life and the required thickness of asphalt pavement structure, all that under the current axial load; And proposed the cement pavement structure check system including combined fatigue stress value, pavement service life and the required thickness of the cement pavement structure; Meanwhile, in this paper based on the data statistics of axial load and pavement design data, the pavement structure was checked and the scientific and decision-making theory was provided for the maintain and manage of the highway in the Shaanxi province.Based on the above theoretical analysis, combined with GIS related theory, the "Highway Pavement Structure under Overloading Transportation Checked System in Shaanxi Province Base on GIS" was developed. In this software system, make the component GIS as the customized development and NET2005 with Visual Studio as the integrated development environment; ArcEngine9.3 was embedded. In addition the advanced OLE automation development technology, vb.net language programming and ado.net technology was used to access the database. In this system, the ArcInfo database and Access database was connected, and the bidirectional inquiring between spatial data and attribute data by the establishment of linear referencing system and dynamic segmentation technology.In this system, the existing data:dynamic weighing system database was made full used and the information foundation database of pavement structure was established by data collection. Modular design procedures were used in this system, including the module of data attribute, pavement structure check and picture edit. Different modules were displayed in different view and the modules can be converted by menu commands.