Abstract
In recent years, there are many subway lines under construction in cold regions of China. In severe cold regions, due to the harsh winter weather, cold protection has become a key task for subway operations. In this study, field experiments on the influence of cold protection technologies on the thermal environment and train-induced unsteady airflow (TIUA) of a typical island station in Harbin were conducted. The results show that the temperature, wind speed, and air volume of the entrance and the piston duct all change periodically under the driving interval. For the cold protection technologies at the entrance and exit, the cold-proof effect of the door curtain is stronger than that of the hot air curtain and the outer door. The air inflow and outflow volumes through the entrance without the inner and outer curtains are 1.4–2.2 and 2.1–2.3 times higher than those with inner and outer curtains, respectively. For the cold protection technologies at piston duct, the cold-proof effect of electric roller blinds is stronger than that of wind pavilion cover. Compared with the use of the two cold protection technologies, the average temperature of the piston duct when the electric roller shutter is fully opened is 1.8–2.0 °C lower than it, and the air inflow and outflow through the piston duct are also 1.3 and 1.4 times higher than it respectively.
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