Climate Impact Research Division And Based On GIS Method Of Asphalt Pavement In Hunan Province

Asphalt pavement are exposed to the natural environment for a long time and influenced by various natural factors after Paved, climate is the most active factor, asphaltpavement must be adapted to the local climate conditions in order to guarantee its proper and normal service life.Thesis is based on the road survey of asphalt pavement in Hunan Province, combined the investigation results of the meteorological materials of all parts of the whole province, and consulted the domestic and international latest research results, it has analyzed the impact of climate factors on asphalt pavement surface, Based on the analysis of the water temperature situation in Hunan Province, it determined the suitable climate of Hunan Division of asphalt pavement model and produced the related zoning map,and also established the relevant database system.First, through studying with bituminous highway that being under building or plan to build in Hunan Province, and combining with10 years of meteorological data of 23 regions in Hunan Province,thesis obtains that national standards model and heat coefficient model are suitable for the status of asphalt pavement in Hunan Province. Two partition methods can meet different needs, Hunan carried the Asphalt Pavement climate tertiary area, and on the basis of dividing area,it also carried PG rating of the asphalt performance.Secondly,through Investigation and analysis the traffic conditions and the climate survey data of Hunan Province, using MAPGIS powerful graphics image processing and spatial analysis and query functions , and aslo the map editing function, it carried the climate division zoning plan for Hunan Province of asphalt pavement, and produce relevant maps. it also established a climate of Hunan asphalt pavement partitioned database system, which consists of 8 forms,basically realized the data to add,delete,refresh,inquiry and other basic functions, it completed climate of Hunan Highway Asphalt Pavement three partitions. using this system can be more convenient to serve the needs of the road system.According to different climatic conditions in different areas,it requirements different pitch quality and asphalt mixture property to make the road has a strong high-temperature rutting resistance, low temperature cracking resistance and water stability, those are important issues that related to the using quality of the highway pavement. Road asphalt and asphalt performance climate divisions have an important significance in practical application.