Optimal Maintenance Models of Social Infrastructures Considering Natural Disasters  
Author Takumi Kishida

 
Co-Author(s) Kodo Ito; Yoshiyuki Higuchi; Toshio Nakagawa

 
Abstract Social infrastructure such as roads and bridges have to be maintained under both strict budgets of local governments and scarcity of skillful engineers. Maintenance policies which consider various kind of factors such as maintenance periods, cost, degradation level, and natural disaster distribution, have to be established. In this paper, considering natural disasters, we form stochastically cumulative damage models and discuss their optimal policies theoretically and numerically. The total expected cost rates are obtained and optimal preventive maintenance levels which minimize them, are derived. Based this model, we consider extended models with a natural disaster and its recovery.

 
Keywords Social Infrastructure, asset management, maintenance, optimal policy, cumulative damage model
   
    Article #:  RQD25-58
 
Proceedings of 25th ISSAT International Conference on Reliability & Quality in Design
August 1-3, 2019 - Las Vegas, NV, U.S.A.