| During the long-term operation of the airport pavement,with the increase of traffic and the influence of various natural factors,its performance will gradually weaken.To carry out research on the performance of use,it is necessary to establish a scientific and effective airport pavement evaluation system to conduct targeted investigation,analysis,evaluation and prediction of pavement.Since the pavement evaluation system in China started late,compared with the expressway evaluation system,there are few studies on the airport pavement evaluation system.At present,domestic and international researches on airport pavement evaluation indicators mainly focus on four aspects: Pavement Condition Index(referred to as PCI),International Roughness Index(referred to as IRI),Skidding Resistance Index(referred to as SRI),and Aircraft Classification Number-Pavement Classification Number Index(referred to as ACN-PCN).The content of the airport pavement evaluation system is too single,and the evaluation indicators are not perfect,so that the airport maintenance staff can not make better evaluation and maintenance of the road surface,which has laid a huge hidden safety hazard for the safe operation of the airport.In order to improve the performance of the airport pavement,manage and maintain the pavement more scientifically and effectively,and prolong the service life of the airport pavement,the main research contents and conclusions are as follows:1)Investigate and evaluate the influencing factors of the existing airport pavement performance.Based on the PCI?IRI?SRI and ACN-PCN,the airport is analyzed with ground penetrating radar detection.Impact of hidden diseases in deep structure of pavement on airport performance.2)Correlation between hidden diseases and various influencing factors was calculated using grey correlation analysis.The results show that the hidden disease has correlations with other factors that affect the performance of the pavement,and has the greatest correlation with the PCI.3)The analytic hierarchy process is used to calculate the weight of hidden diseases and the influence factors on the airport performance.The hidden diseases are taken as an important part of the establishment of a relatively complete airport pavement evaluation system,and an airport pavement comprehensive evaluation index model is established.4)Combined with an airport project example,according to its geological survey data,the comprehensive evaluation index of the airport is analyzed,and the comprehensive evaluation with multi-index interval number approximation is used to make a deeper explanation and explanation to verify the established comprehensive evaluation model of the airport pavement.Reasonableness,and predict the remaining life of the airport pavement. |
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