海岛强腐蚀环境下某变电站混凝土结构耐久性评估

Durability Evaluation of Concrete Structure of a Substation Under Strong Corrosion Environment on an Island

结合某岛屿变电站土建结构的耐久性劣化情况的调研结果,对海岛强腐蚀环境下,混凝土结构的耐久性进行了评估。考虑杂散电流作用下氯离子的侵蚀过程,基于Fick第二定律对不同环境和部位下的构件进行了耐久性寿命预测和分析,指出混凝土保护层厚度是保证变电站土建结构耐久性的最关键因素。

Based on the investigation results of durability deterioration of civil engineering structure on an island substation,the durability of concrete structure under island strong corrosion environment is evaluated.Considering the chloride erosion process under the action of stray current and based on Fick's second law,the durability life of members under different environments and parts was predicted and analyzed and it was pointed out that the thickness of concrete cover was the most important factor to ensure the durability of substation civil structure.