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中文摘要：
高速列车经过火车站时，列车与建筑物之间会出现十分复杂的非定常湍流现象。该复杂流场对建筑物产生很大甚至是破坏性影响。采用数值方法模拟这种复杂流场，运用滑移网格技术，结合k-ε二方程湍流模型对跨线天桥周围的三维、非定常和可压缩流动进行数值模拟研究。研究结果表明：对于跨线天桥、站台雨棚以及火车站大跨屋盖等跨线结构，在结构设计时需要考虑列车风致效应。
英文摘要：
When a high - speed train is passing through a station, complex unsteady turbulent flows arise between the train and building structure. Particularly in the case that the high - speed train is close to the building, these flows would have significant even devastating influence. In order to simulate the complicated flow field, numerical approach was employed in this paper, and three -dimensional unsteady compressible flows around a cross - line bridge for passengers were evaluated with sliding mesh technology combined with the two - equation k - turbulence model. The numerical results demonstrate that these wind -induced effects should be taken into consideration during the structure design period, particularly for cross - line bridges, platform canopies, long - span roofs of railway stations, etc.
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