A. Ferreira and S. Meneses (Portugal)
Modelling, genetic algorithms, resource management, road network modelling
This paper presents the development and implementation of a new Decision-Aid Tool to be used in the Oliveira do Hospital’s Pavement Management System. This system includes the following components: a Road Network Database; a Quality Evaluation Tool; a Costs Model; a Pavement Performance Model; and a Decision-Aid Tool. Nowadays, the Decision-Aid Tool uses a deterministic section-linked optimisation model with the objective of minimising the total expected discounted costs over the planning period while keeping the road pavements within given quality standards. The new Decision-Aid Tool uses a deterministic section-linked optimisation model with the goal of maximising quality, performance or user benefits over the planning period for given annual budget levels. This new approach is suitable for road administrations that strictly adhere to known maintenance and rehabilitation annual budgets. The current pavements quality and the constraints defined by the annual budgets determine the future quality and level of performance of the road pavements. The new Decision-Aid Tool also uses the deterministic pavement performance model used in the AASHTO flexible pavement design method that allows closing the gap between project and network management.
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