Study On Road Surface Of Using Capability On Alaer~Hetian Desert Highway

The research on the road surface using performance of desert highway is to discuss how to evaluate the practicability of desert highway in an objective, complete and reasonable way. Bases pavement structure characteristic of desert highway and its using status to analyse road surface of using capability of desert highway, which from Alaer to Hetian. The analysis has two aspects: pavement structure capability and pavement function capability. Stability of sand roadbed is important element to analyse capability of pavement structure, then modulus of esilience of sand roadbed and sedimentation of road surface are treated as two aspects of aeolian sand roadbed stability, because the two subentries each has his strong point and complement to each other during token sand roadbed stability. Secondly, the paper based on modulus of esilience and faults to talking how to improve on pavement structure model.About capability of pavement function, dilapidation of road surface is regarded as keystone to investigate its causation and type. Then, status of traffic absorbing load of the desert highway is analysed.By investigate datas, to appraise the road surface using performance of the desert highway. Condition of disrepair, structural intensity, level limit and skid-resisting ability are subentry evaluate indexes of road surface using capability evaluate on our country. The four indexes are endued with coefficients then addition is synthetically evaluation. But the evaluate model for desert highway in our country is not comfortable, especially for the desert highway which is using Aeolian sand work as roadbed filler, the evaluate model is not to take into consideration that desert area have different environments and structural particularity of desert highway. So in this paper, increase evaluate indexes from 4 to 6, the new indexes are sand roadbed stability and traffic absorbing load. Then be based upon new indexes system of desert highway road surface using capability to establish two new evaluate models to appraise the road surface using performance of desert highway: grey model with gray theories is built. Another is element model of pavement performance extension assessment, which is established on the basis of extenics theory.