Measuring and modeling moisture environment in underground metro stations during commissioning stage: A case study

Due to the humid underground environment, metro stations often have internal condensation issues, especially during commissioning and initial operation phases, these issues will a negative impact on equipment building life. This study aims solve issue by 1) identifying common areas with risks based on-site measurements numerical simulation methods, 2) proposing effective dehumidification solutions for moisture control of stations. By investigating characteristics station’s environment assessing effects two different strategies, it has been found that Tianjin, most times in summer, air temperature station phase was maintained relatively stable, but significantly changing humidity; relative humidity platforms higher than 80% almost 30% testing time, surface upper structure platform doors having high risk condensation; 3) effect industrial dehumidifiers be better increasing exhaust volume. The authors hope research could aid decision strategies provide guidance further Practical Application article analyzed conducted approach assess risk. Potential including volume using proposed, their investigated compared. this can facilities maintenance