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在沈阳地铁二号线世纪广场站的站台层设置多个测点,利用多通道热球式风速仪进行站台层风速的测试,分析站台两端、扶梯口及站台中部各断面速度场的变化规律。测试结果表明,对于北方严寒地区采用全高非封闭式屏蔽门地铁车站,受列车活塞风影响,列车进出站时站台各测点最大风速瞬时可达到3.7m/s,站台平均风速不超过2.5m/s,活塞风持续时间200s,地铁站台的风速可以满足规范的要求,活塞风可以对站台起到辅助通风的作用。
A number of measuring points were set up at the platform of the Shenyang Metro Line 2 Century Plaza Station. The multi-channel thermal ball anemometer was used to test the wind speed at the platform level. The changes of the velocity field at each end of the platform, the escalator mouth and the central section of the platform were analyzed . The test results show that the maximum wind speed at each measuring point of the platform can reach 3.7m / s instantaneously and the average wind speed of the platform does not exceed 2.5m / s due to the influence of train piston wind. s, the duration of the piston wind 200s, the wind speed of the subway platform can meet the requirements of the specification, and the piston wind can play an auxiliary ventilation role on the platform.