Test and Analysis on the Thermal Environment of Island Subway Platform in Frosty Area

Abstract:

in order to study the piston wind and its effect on the thermal environment and velocity field in island subway station platform with full-height non-enclosed screen doors, a number of field measurements were taken at the platform of century station of metro line 2 in Shenyang from Oct. 2012 to Mar. 2013. The test results show that the full-height non-enclosed screen doors enhances the heat transfer between the platform and the tunnel, the effect of piston wind increases the average temperature of platform by 0.7°C-1.4°C. Meanwhile, the full-height non-enclosed screen doors prevent the piston wind from entering into the platform effectively. The wind speed of the platform fluctuates between 0.25~0.52m/s when no train enters or leaves the platform, increasing slightly under the effect of the outdoor wind velocity. When one-way train goes into and out of the site, the maximum wind speed reaches up to 2.2m/s at the working area of platform. While, the wind speed of the stair section shows cyclical shocks between 1.2m/s ~ 1.7m/s with the amplitude attenuates gradually.The two-way train caused the the maximum wind speed up to 2m/s with the duration of 220s.

• Periodical: Applied Mechanics and Materials (Volumes 353-356)
• Pages: 3025-3028
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.353-356.3025
• Online since: August 2013
• Authors: Pei Hong Zhang, Lei Xin Yu, Jian Wang
• Keywords: Field Measurement, Piston Wind, Screen Doors, Temperature Field, Velocity Field

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