Analysis And Development Of Expressway Asphalt Pavement Management System

Since 1980s, the construction of expressways in China has made tremendous achievements, especially for expressways asphalt pavement. With the gradual improvement of Highway Network in China, Road management departments work focus will from large-scale construction road network to conserve, rebuild, maintain and improve the existing road network, which highly show the importance of pavement management system. Therefore, this paper does some researches on the highway asphalt pavement management system, including five parts: expressway asphalt pavement condition data collection; asphalt pavement performance of expressway evaluation model; asphalt pavement performance of expressway prediction model; optimal of asphalt highway pavement maintenance decisions model; development of the pavementmanagement system.Pavement performance data acquisition is the basis of pavement management system. This paper introduce and research pavement data collection methods based on the new equipment , the pavement performance index is obtained through analysis of collected data, which providing the basis for asphalt pavement performance of expressway evaluation and prediction model. In performance evaluation, they account for the present methods of the pavement performance evaluation in china. Then, in view of the current pavement condition data have the characteristics of grey, brought rutting index into evaluation system and established a evaluation model based on grey clustering method. In asphalt pavement performance prediction, summarize systematically the reseach conclusions of asphalt pavement performance prediction in the domestic and international literatures, according to characteristics of less pavement condition datas of expressway in HUNAN province , grey markov forecasting model is established.Then, the author utilized the FAMINCON function in MATLAB for solving the constrained optimization problems of Markov's transition matrix. In performance optimization decision, based on 0-1 integer programming principle, a model of optimum decision for maintenance of asphalt pavement of expressway is established in this paper.Finally, this paper summarizes general system design and system's function,and builds a pavement management system for HUNAN Province. Meanwhile,the conclusions of asphalt pavement management system are presented and the potential prospects in this area are discussed.