抄録
In this paper consist of three parts; 1) An identification methods based upon actual inspection data in order to carry out strategic maintenance for bridge and tunnel structures in cold region. The resistance of deteriorating bridge and tunnel structures is non-stationary stochastic processes, and reliability problems of such structures are essentially different of time-independent reliability problems. 2) Log-normal distribution shows excellent fit with various data on the durations of disabilities, irrespective of their severity. Persisting long tails suggest the fractal nature of disability distributions. Finally, numerical examples are worked out to demonstrate the usefulness of this estimation method for Bridge Management System and Tunnel Management System. And long tails of the duration distributions for the bridge and tunnel lining are analyzed.
