2009 Volume 55A Pages 249-260
This study discusses the life cycle cost for sheet pile quay walls considering the progress of corrosion. It is necessary to calculate the failure probabilities according to the decrease of section modulus by corrosion for the evaluation of life cycle cost. The condition that the section modulus becomes initial value after the restoration work makes the evaluation of life cycle cost difficult. We proposed the simple evaluation method of life cycle cost and showed that the proposed method well evaluates the failure probability corresponding to the minimum life cycle cost. We also compared the failure probability for minimum life cycle cost with that for minimum expected total cost.
