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The Optimal Timing of Preventive Maintenance of Highway Asphalt Pavements

Author: ZuoYan
Tutor: WuJianMin
School: Chang'an University
Course: Road and Railway Engineering
Keywords: Expressway Asphalt Pavement The best preventive maintenance timing Prediction model Virtual decision making unit Data envelopment analysis
CLC: U416.217
Type: Master's thesis
Year: 2009
Downloads: 122
Quote: 2
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Abstract


Currently more serious damage to our highway pavement early , preventive maintenance on the road has become the focus of pavement maintenance work . Preventive maintenance will be taken in the diseases micro trillion measures to take preventive measures, so that the road can maintain good performance in a long time , it becomes very important preventive maintenance timing . Of great significance to the study and application of the preventive maintenance timing of asphalt pavement maintenance . Firstly, the concept of preventive maintenance and preventive maintenance significance to introduce the study of the need for preventive maintenance timing , and the key to solve the problem . Expressway asphalt pavement preventive maintenance needs based on the use of asphalt pavement performance evaluation and analysis of individual indicators , based on the current evaluation system based on increased rutting indicators proposed for use in highway asphalt pavement performance evaluation system. The proposed evaluation model , the weighted geometric mean calculated pavement performance indicators PQI main objective deployment combined to determine the weight of each indicator . Given the current less historical data , this paper uses a regression forecast performance each itemized indicators and the composite indicator based on the least squares method of gray prediction model GM (1,1) on the road . Several commonly used at home and abroad for preventive maintenance timing analysis methods for determining the best time in reference to several other common method based on the use of data envelopment analysis DEA model to determine the preventive maintenance . The DEA input indicators : output indicators for day-to-day maintenance costs and preventive maintenance costs ; Data Envelopment Analysis model for Distinguishing Efficient Decision Making Units : the conservation benefits of pavement performance indicators area , the pavement life changes in the amount and the residual value . Using built expressway asphalt pavement preventive maintenance timing DEA model , several different preventive maintenance timing of the decision-making unit is calculated to determine the best preventive maintenance timing .

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CLC: > Transportation > Road transport > Road works > Roadbed, pavement engineering > Pavement Engineering > Road : use of the material points > Asphalt Pavement
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