Method for Evaluating Durability of Existing Concrete Bridges Structures in Marine Environment

Based on the three-level-multi-index evaluating model,the factors influencing the durability of concrete bridges structures in marine environment are analyzed in this paper and then the membership degree of durability test indexes at various fuzzy levels is determined. In the end,taking Hangzhou Bay Bridge as an example,this evaluating method is proved reasonable. The presented method is of simplicity,practicability and clear aim with reference value to durability evaluation of bridges in other chlorine environment.