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    Optimal infrastructure maintenance scheduling problem under budget uncertainty

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    GAO-DISSERTATION.pdf (1.247Mb)
    Date
    2011-08
    Author
    Gao, Lu
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    Abstract
    This research addresses the infrastructure maintenance scheduling problems under budget uncertainty. Infrastructure agencies usually face budget uncertainties that will eventually lead to suboptimal planning if maintenance decisions are made without taking the uncertainty into consideration. It is important for decision makers to adopt maintenance scheduling policies that take future budget uncertainty into consideration. The author proposes a multistage, stochastic linear programming model to address this problem. The author also develops solution procedures using the augmented Lagrangian decomposition algorithm and scenario reduction method. A case study exploring the computational characteristics of the proposed methods is conducted and the benefit of using the stochastic programming approach is discussed. In the case study, the road network in Dallas District is used with data taken from the Texas Department of Transportation’s Pavement Management Information System. The case study results reveal that the stochastic programming solutions tend to allocate more resources to preventive maintenance than deterministic solutions that ignore the uncertainty information. The proposed methodology can help decision makers effectively obtain optimal maintenance plan under budget uncertainty.
    Department
    Civil, Architectural, and Environmental Engineering
    Description
    text
    Subject
    Infrastructure management
    Maintenance planning
    Stochastic programming
    Budget uncertainty
    URI
    http://hdl.handle.net/2152/ETD-UT-2011-08-3889
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