Study On Trunk Highway Asphalt Pavement Features Of Diseases And Overhaul Decision In Shaanxi Province

Shanxi Province is a province of resources,the road surface of national and provincial trunk highway is badly damaged by the heavy vehicles and the large traffic vol-ume.Considering the rapid development of the highway transportation and large-scale high-way construction,the maintenance task will be very heavy.How to timely and effective, eco-nomical way to repair has been an urgent need to resolve important issues which a highway departments faced.However, China has no specific activities for the repair of asphalt pave-ment, this brought many difficulties for the smooth implementation of the asphalt pavement repair.Therefore,researching the Overhaul Decision Making of the Trunk Highway Asphalt Pavement in Shanxi Province,perfecting the repair technology of asphalt pavement is of a very important practical significance,for ensuring the road performance and service life, as well as training and development of road maintenance team.This paper first according to the Traffic Load Characteristics of the Shanxi Provincial trunk highway and climate characteristics,aimed at the typical pavement structure used in the trunk road,analyzed and checked the main diseases on the typical asphalt pavement of the trunk road around the cities,summarized the characteristics of the diseases.On this basis, es-tablished the Pavement Damage Assessment System based on Triangle whitening weight function,using Gray cluster. Second,summed up the disease characteristics and influencing factors of pavement after overhaul.And reseached the determinnation of the overhaul time and program;finally summed up the typical overhaul technology of the asphalt pavement,to guide the overhaul design of the Trunk Highway Asphalt Pavement in Shanxi Province.