Cause analysis and suggestion on screen door air leakage of underground railway platform

 At present, most researches on the leakage of PSD (platform screen door) at home and abroad focus on the air leakage in the condition that the PSD is open. By analysing the measured data, finds that the amount of air leakage in the closed state of the PSD is high. Combined with the technical codes, summarizes the rules of the airtightness of the PSD, analyses the problems existing in the installation process and the cause of the air leakage among the door parts, the doors and the civil structure, and gives some suggestions.