抄録
The paper presents a systematic approach to find optimal maintenance strategies for pavement management systems by using the World Bank's Highway Development and Management System (HDM-4) combined with gradient methods proposed by Tsunokawa et al (2005). The optimal maintenance strategy is defined as the set of optimal maintenance options corresponding to different traffic levels and various initial pavement conditions, which minimizes the sum of agency costs and road user costs in present value or maximizes the net benefit to society over an analysis period. The basic data for the analysis was derived from the Vietnamese conditions and the most sensitive parameters in HDM-4 were calibrated into the local conditions for a basic application. The findings may help highway agencies in better applying the right maintenance work at the right time and thus result in savings with regard to the total transport costs to the society.
