ABSTRACT

Cai, J.; Dong, F., and Luo, Z., 2018. Durability of concrete bridge structure under marine environment. In: Liu, Z.L. and Mi, C. (eds.), Advances in Sustainable Port and Ocean Engineering. Journal of Coastal Research, Special Issue No. 83, pp. 429–435. Coconut Creek (Florida), ISSN 0749-0208.

According to the known erosion mechanism of chloride ion on concrete structure and the mechanism of steel corrosion, the evaluation index system and fuzzy comprehensive evaluation factor set for studying the durability of concrete bridge structure are established, and the durability evaluation model of concrete bridge structure under the environment of chloride ion erosion. Taking into account the uncertainty of the main parameters in the life assessment model, based on the Monte Carlo principle, the random simulation of concrete members is carried out by using Crystal Ball software. The results of random simulation show that the thickness of protective layer and the concentration of chloride ion are the important parameters that affect the durability of concrete structure under chloride erosion. In the durability evaluation of concrete bridge structure, the thickness of the protective layer and the concentration of chloride should be paid attention to.

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