A Consideration on Deterioration Model for Cold Region Tunnel Lining Based on Life-cycle Concept

This paper proposes the tunnel lining deterioration model which is based upon actual inspection data in order to carry out strategic maintenance and to rationalize life cycle cost analysis for tunnel structures. The evaluation value of deteriorating tunnel structures is a non-stationary stochastic process, and reliability problems of such structures are needed to the consideration of the future risk. In Japan, the probability that an earthquake occurs is high compared with other countries. A risk analysis of seismic motion and technical components as well as damages associated with cost variables have to be dealt with. The model of the tunnel management system presented in the paper is applied to the asset management of the cold region road tunnels. This research will be developed to the efficient tunnel maintenance system and a quantitative criterion from pictures of tunnel lining using the life cycle cost analysis. And also, in order to describe the deterioration model of the life cycle assessment is needed to consider the large-scale earthquake phenomena in Japan.