SERVICE LIFE PREDICTION METHOD BASED ON THE THEORY OF RELIABILITY

摘要

In order to fulfill the shortcut of the prediction method for the service life of subsea tunnels, which is based on fixed parameters, a new approach based on the theory of reliability is proposed.According to the reliability theory, the failure of a lining is because the failure of the lining system, both inside and outside.The proposed method generates the prediction models for the chloride corrosion of reinforcing bars and service life of corrosion cracking.The calculation results show that it is fulfill the requirements of durability and economic by taking the chloride corrosion of reinforcing bars as a signal of losing the durability;the durability predicted by logarithmic normal distribution and normal distribution are similar;reducing the water cement ratio is the most effective way of increasing the service life of chloride corrosion reinforcing bars and reliability index.