Study On The Performance Evaluation And Forecast Decision-making Of Expressway Asphalt Pavement

With rapid economic growth, people’s living standards gradually improved, the quality of life requirements are also increased. China’s highway construction in recent years has made relatively great progress, which as a highway theoretical research and practical exploration are an important part of some achievements. However, the frequency of the current highway early disease, road maintenance and other issues not timely seriously affected the performance of the road surface, the urgent need is more appropriate for Pavement Maintenance Decision Making Chinese expressway.Since reasonable certainty before Pavement Maintenance Decision program is fully aware of the highway pavement performance, based on external conditions, Pavement Maintenance Decision Based on the selection method of decision-making program, the first of Expressway Pavement Performance Evaluation Methods were studied. In the fully learn the theory and practical experience at home and abroad on the basis of, an improved pavement performance evaluation methods and the comprehensive evaluation system. Secondly, in order to be more objective and correct decision to develop a road maintenance program, the paper several common diseases Expressway Asphalt Pavement introduced and cause analysis, in order to take full account of the decision-making when these external factors. When the prediction method described in highway pavement performance, the paper at home and abroad fully cf. several commonly used prediction models, and summarize its characteristics and applicability, with predictive models paper establishes the principle put forward by gray theory completed highway pavement performance prediction, is more suitable for the current Chinese national highway pavement performance prediction methods. Finally, on the basis of highway asphalt pavement performance index evaluation and prediction of the proposed road maintenance decision method, mainly in gray matter element method based on the theory, the model selection and processing variables on the evaluation index system was further optimized, making the final decision model more operational and practical significance. Thesis on previous studies carried out and proposed new conservation decision method for highway asphalt pavement performance provided a scientific basis for the relevant highway departments provide reference for pavement maintenance decisions.