| With the gradual improvement of the highway network in our country,the highway in operation is more and more,more and more long,but there are different degrees of damage on the pavement of each highway.But for the highway maintenance department,the maintenance funds are very few,so it is hard to ensure that the highway can be well maintained and repaired.With the improvement of the expressway network in China,the mileage of the motorway has become longer and longer,and the asphalt pavement of each expressway has been damaged in different degrees.However,the maintenance funds of various expressway maintenance and management organizations can be limited,and it is difficult to ensure that all highway asphalt pavement can achieve good maintenance.All highway maintenance and management organizations urgently need to solve the problem of how to allocate the highway pavement maintenance budget.Based on the research results of the existing highway asphalt pavement maintenance decision model of the Shaanxi provincial traffic construction group,this paper applies the theory of matter element research to study the network level strategy and comprehensive research of asphalt highway by using the theory of matter element research.There are too many factors to be considered in the maintenance and maintenance of the highway.According to the characteristics of the expressway in the whole road network,combined with the mature maintenance management experience and the matter element analysis theory,the influence factors of the highway asphalt pavement maintenance decision are discussed,including the pavement performance and the pavement structure.Many factors,such as the traffic volume,the age of the road and the status of the road in the whole road network,are explored,and some important evaluation indexes are selected as the characteristic indexes of the maintenance decision of the asphalt pavement.Using the fuzzy mathematics theory and the matter element analysis theory,the influence of the characteristic factors on the asphalt pavement network maintenance decision is studied,and the selected characteristic indexes are normalized.For the decision-making factors of pavement structure,traffic volume and road age,the corresponding fitting function with the highest fitting accuracy is selected for numerical fitting.The weight of each influence factor is calculated by matter-element analysis.The influencing factors include pavement performance,pavement structure,traffic volume,road age and road grade corresponding to the weight vector.By approximating the theory of mathematical analysis,the evaluation index of the influencing factors of each strategy and the correlation of the necessary maintenance pavement are analyzed,so that the maintenance order of each route in the highway network is sorted.Through comprehensive analysis and comparison of several main deterministic and probabilistic models,the grey system prediction model is most suitable for practical operation.According to the grey system prediction model,the maintenance demand analysis of pavement performance prediction results is carried out,and the strategy number method is used to maintain the maintenance plan for the highway asphalt project,providing the corresponding maintenance measures for each maintenance road,and planning the maintenance plan of this route in recent years.Based on the matter element analysis model,the comprehensive ranking of all maintenance sections is obtained.The sorting results are applied to the comprehensive analysis of the highway network maintenance plan,and the pavement maintenance plan of the 10 Expressway in Shaanxi Province in the next 5 years is obtained.The research results of this paper can provide technical support for the maintenance and management of highway pavement in the future,and have very important significance for the maintenance and management of the asphalt pavement in our country. |
