| With the growth of aviatic transport business,airport pavement is subjected to load and the influence of environmental factors which makes airport pavement damage inevitably in various degrees.Airport pavement management departments need to adopt different methods of maintenance and repairment.Preventive maintenance is an active type of maintenance which can better meet needs of the maintenance work of airport pavement,prevent and delay the attenuation of pavement performance,reduce maintenance cost.The key to achieve goal of preventive maintenance is to choose suitable preventive maintenance measures in pavement maintenance at the right time.This paper mainly carried out the following research work.Firstly,the comprehensive evaluation of the airport pavement performance based on preventive maintenance is completed by the use of approximation method of interval number in order to reflect the overall performance of the airport pavement.Secondly,probing macro-analysis and micro-analysis of the standard and its use methods of pavement preventive maintenance by consulting domestic and foreign pavement preventive maintenance technical literature.Thirdly,the key of preventive maintenance technology is to judge the timing of maintenance.This paper builds asphalt pavement PCI prediction model suited for preventive maintenance by the use of GM(1,1).The timing of asphalt pavement preventive maintenance is obtained by calculating the inflection point of the pavement PCI decay curve.Finally,the judgement of timing of preventive maintenance is based on the PCI value of the airport pavement.The airport pavement preventive maintenance system has been constructed with the secondary development of of GIS software to realize digital management and achieve timing of preventive maintenance based on the management of the airport pavement.The research of this paper provides reference for ariport pavement management department to carry out preventive maintenance. |
PDF Full Text Request