ABSTRACT
This paper deals with the inspection planning for service life management of deteriorating bridges based on efficient multi-objective optimization. The damage detection based-objectives presented in this paper are (a) minimizing the expected fatigue damage detection delay, (b) minimizing the probability of fatigue failure, (c) maximizing the expected extended service life, and (d) minimizing the expected total lifecycle cost. The effect of fatigue damage detection on the probability of failure, service life extension, and lifecycle cost is considered. Using the objective reduction approach, the effects of adding or removing particular objectives among these four on the Pareto front are investigated, and the redundant objectives, which have no effect on the Pareto front, are identified. By removing the redundant objectives, the efficiency in decision making and visualization of the multi-objective optimization for inspection planning are improved.
