ANALYSIS OPTIMAL MAINTENANCE STRATEGY FOR EXISTING ASEISMATIC STRUCTURE BASED ON MARKOV PROCESS

The state of aseismic structure is classified as several sorts according to Code for Seismic Design of Building (GB 50011-2001) and corresponding maintenance strategy is set also. A mathematical model of optimal maintenance strategy based on Markov process for aseismic structure is built. State transition probability matrix and reward matrix are determined according to the different maintenance strategies, then structure limiting state transition probability vector and expected total cost are calculated. By optimization analysis of maintenance strategy for aseismic structure, the optimal maintenance strategy which is the minimal expected total cost can be get. An optimal maintenance strategy is arranged according to the state of structure. All of these provide a scientific basis for decision-making.