The Study On The Model Of Performance Prediction And Optimization Decision In Asphalt Concrete Pavement Based On The Preventive Maintenance

The freeway network in China is rapidly developing, causing a lot of problems about maintenance and management. Pavement Preventive Maintenance (PPM) can maintain a good service level of pavement, reduce maintenance cost, extent road service life, so as a new concept and technology, it is being extended and used gradually by highway management in china.Preventive Maintenance of Asphalt concrete pavement is a preventive maintenance measures which crack repair, surface treatment or combinations of them are implemented in the right years after Asphalt Concrete Pavement was put into use. The study on this technology of china starts relatively late. In the current, the study for PPM technology emphasis on the technical level of the Application of specific conservation, but decision techniques of preventive maintenance has not made substantial progress. And no complete practice results of the preventive maintenance system. The utility performance of PPM also has the very big gap compared with abroad.The Study and software development on the optimization decision of Preventive Maintenance of Asphalt concrete pavement can help the decision institution to obtain optimal repair strategy and practical application of PPM. Moreover, It can let decision institution accept the concept of PPM, it is very important for the successful management of the road.1. Through the evaluation and grading standards of pavement performance in Specifications for Maintenance and Assessment Standards, the judge standards that if the performance Maintenance fit or not for a kind of pavement is established.2. A computational method of the probability transition matrix of Asphalt concrete pavement condition with different traffic and different preventive maintenance measures has been proposed.3. Reference the study results of the optimum preventive maintenance time, dissertation develops the Dynamic Programming to establish Decision-making model for the conservation strategy of Asphalt Concrete Pavement Preventive Maintenance. Select the best Pavement Preventive Maintenance Strategies based on some analysis method.4. Design the software interface According to user needs.