为评估越站列车高速（350 km/h）通过半地下车站时气动效应对车站内、外环境的影响，为车站及连接隧道的设计提供参考。利用重叠网格技术建立高速铁路半地下车站气动效应计算模型，分析单车上行、单车下行、全地下段会车、半地下段会车等工况下站台区域的空气压力及风速、站外微气压波变化规律。结果表明： 1）全地下段比半地下段的压力波动剧烈； 2）单车上行工况，全地下段站台区域压力波动最剧烈，其压力波动峰值、瞬变压力峰值均最大，但均小于评价标准； 3）全地下段会车工况，站台区域的风速最大，最大风速未超过5.0 m/s； 4）上行列车通过时，在全地下段和半地下段交界处附近产生微气压波，50 m范围内有建筑物时需考虑微气压波的影响。
In order to evaluate the influence of aerodynamic
effect on internal and external environment of station when train passes
through the semiunderground station with speed of 350 km/h, and provide a reference
for the design of station and connection tunnel, the variation rules of air
pressure, wind speed in the platform area and micro pressure wave outside the
station are studied by the computational model of aerodynamic effects built by
overset mesh technology under the working conditions of upgoing, downgoing, allunderground section and semiunderground
section. The results show that: (1) The pressure fluctuation degree of
underground area is more severe than that of semiunderground
area. (2) Under the condition of upgoing, the pressure
fluctuation of underground platform area is the most severe and the peak value
of pressure fluctuation and transient pressure reaches maximum, but both are
less than the evaluation standard. (3) Under the condition of allunderground section, wind speed of platform area reaches maximum,
but the maximum wind speed does not exceed 5.0 m/s. (4) When the up train
passes through, micro pressure wave will be generated near junction of
underground section and semiunderground section, and
the buildings within 50 m should consider the influence of micro pressure.
