Research on Anti corrosion Design of Underground Structures—Taking Foshan Metro Line 4 as an Example
In order to find a general corrosive treatment scheme suitable for underground structures in Foshan area,based on the geotechnical investigation of the Phase I project of Foshan Metro Line 4,this study adopted the method of literature research and comparative analysis of specifications to conduct in-depth analysis of the corrosion resistance requirements in different specifications.Furthermore,the existing problems in the GB/T 50476-2019 Durability Design Standard for Concrete Structures were discussed,and combined with the actual situation of the existing Foshan Metro Line 3 and Guangzhou Metro Line 7 West Extension to Shunde section,a set of groundwater corrosion prevention and control design standards suitable for subway structures in Foshan area were carried out.The application results in the early construction site of Foshan Metro Line 4 show that when executed according to the above design standards,the relevant performance indicators meet the regulatory requirements.
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