Abstract
Irregularity of ballasted track grows due to gradual deformation of ballast under repeated train passage. Daily maintenance is indispensable to sustain normal track condition. For planning of maintenance policy (MTT, rail grinding, ballast replace), a time history model which considers material deformation is used. In this paper, applying this model, new procedure which can assist decision-making on the maintenance policy is presented. The procedure is formulated under the criterion to minimize maintenance costs, track irregularity and bias of maintenance work concerned with time, using “branch and bound technique” and “Genetic. Algorithm”. And the procedure is analyzed citing several practical example.
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