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http://dx.doi.org/10.9765/KSCOE.2013.25.5.276

Development of Stochastic Expected Cost Model for Preventive Optimal- Maintenance of Armor Units of Rubble-Mound Breakwaters  

Lee, Cheol-Eung (Department of Civil Engineering, Kangwon National University)
Publication Information
Journal of Korean Society of Coastal and Ocean Engineers / v.25, no.5, 2013 , pp. 276-284 More about this Journal
Abstract
A stochastic expected cost model has been suggested by combining the nonlinear cumulative damage model with the expected cost model together which can be useful for doing the preventive optimal-maintenance of the armor units of rubble-mound breakwaters. The suggested model has been satisfactorily calibrated by comparison of the results from others models, also the sensitivity analysis has been carried out in detail under the variation of the associated parameters with the model. The optimal repair times can be directly evaluated by minimizing the expected cost rates that depend on the social importances, damage intensity functions and resistance limits. Finally, the present cost model has been straightforwardly applied to the armor units of rubble-mound breakwaters. Based on the assumption of turning the damaged structure back to the state as good as new after repairs, the required optimal repair times and magnitudes can be determined quantitatively in terms of the optimum balance between the costs and benefits on the preventive maintenance.
Keywords
stochastic expected cost model; cumulative damage; armor units of rubble-mound breakwaters; preventive optimal-maintenance;
Citations & Related Records
Times Cited By KSCI : 3  (Citation Analysis)
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