Fire incidents pose a significant threat to the operational safety of subway platforms. Currently

research on smoke exhaust during subway platform fires primarily relies on numerical simulations or reduced-scale experiments

with limited availability of tested data of airflow organization. This study focuses on a typical station of Wuhan Metro Line 8

conducting air velocity tests at locations including platform escalator entrances

side smoke outlets of track-top air duct

and outlets of platform-hall smoke exhaust system under conditions of train overtaking (Train passes through the platform without stopping). This study captures the variations in air velocity at escalator entrances and side smoke exhaust outlets during different time periods of trains passage. Using the measured data

the study analyzes the operational effectiveness of the proposed two coordinated platform smoke exhaust modes. The results indicate that

in the absence of train movement

air velocities at various escalator entrances of YZH (Station called YZH) station consistently meet the standard requirements of 1.5 m/s throughout the entire testing period. During train overtaking

air velocities at measuring points of escalator entrances exhibit a three-stage trend of initial decrease

followed by an increase

and subsequent decrease. The time variation of air velocities at the escalator entrance is closely related to the total time of train movement. Additionally

the opening position of the side smoke exhaust openings on the track-top air duct doesn't have an obvious impact on the air velocity at escalator entrances. It is worth noting that while the tests did not involve a fire scenario

in the event of a fire

the ventilation capacity would likely be affected

and air velocity may decrease. However

the airflow characteristics and trends observed in this study provide valuable reference data for evaluating the system's performance under real-world conditions. This study

by providing experimental data

will support the operational effectiveness of smoke exhaust systems in real-world subway stations.