Optimal Maintenance Policies of Breakwater Armored with Wave- Dissipating Blocks  
Author Dong Yunlong


Co-Author(s) Kodo Ito; Yoshiyuki Higuchi


Abstract The social infrastructure has to be maintained economically and efficiently because the scale is huge, maintenance budgets of local governments are strict, and the number of skillful maintenance workers declines. Optimal policies which consider the characteristics of social infrastructure maintenance are needed for economical and efficient maintenance. We have established such optimal maintenance policies utilizing the cumulative damage model and apply them to the solution of actual problem of breakwater in a port on the Sea of Japan. Although it is known that the deterioration of breakwaters is Weibull distribution, it is not easy to calculate the optimum policy in the case of the Weibull distribution. This problem is solved by using the approximate formula, the optimum policies are obtained, and we can show that the actual policies undergone by the local government are appropriate because the same policies are obtained theoretically.


Keywords Coastal protection, asset management, maintenance, optimal policy, cumulative damage model
    Article #:  RQD27-33

Proceedings of 27th ISSAT International Conference on Reliability & Quality in Design
Virtual Event

August 4-6, 2022