Research On The Development Of Pavement Predicted Model Basted On Constructing Database

Chinese road construction and development in the early days of reform and opening up this period is the golden age of Chinese infrastructure,especially in the highway construction and operating mileage increase achieved remarkable achievements.After decades of rapid development,the highway engineering in Xinjiang has become an important social infrastructure for the development of production and life,and is also the key to measure the level of modern society.Asphalt pavement performance evaluation which can embody the service level of the road,through the analysis of change data of pavement performance,the establishment of the database performance,the asphalt pavement decay trend in Xinjiang area,for road construction and maintenance management to provide guidance.In this paper,the performance of asphalt pavement as the focus of research,the use of the database,the analysis of the four climatic zones in Xinjiang,the performance of the 12 typical sections.According to the factors of highway grade,subgrade height and moisture coefficient.At the same time,this paper discusses the current domestic and foreign asphalt pavement performance comprehensive model and method,after analyzing the shortcomings and advantages of the domestic and foreign prediction model,the paper chooses the model of the Sun Lijun of Tongji University.According to the actual characteristics of Xinjiang,the use of each single index collection field investigation and detection equipment,regression analysis and put forward the Xinjiang asphalt pavement performance decay model using the Sun Lijun model,the average height of subgrade,traffic and climate factors of three model parameters,performance revealed variation of asphalt pavement in the natural environment of Xinjiang area under the the.Finally,the PQI value is compared with the predicted PQI value with the actual situation,and the error between them is obtained.