高速列车作用在跨线天桥上风压力的数值模拟

列车风载是临近高速铁路建筑物设计和确定相关建筑限界必须考虑的重要问题，采用三维不可压缩势流模型和而元法，对高速列车通过时作用在跨线天桥表面上的气压动力进行了数值计算，结果表明，高速列车通过时一天桥表面受空气压力波的作用，压力系数的波动范围为－０．１３５～０．０９５，文中分析了跨线天桥上压力的分布的基本特征。

Simulation of Pressure on Overline Bridge Due to High Speed Train Passage

It is necessary to predict the aerodynamic load on buildings near the track due to high speed train passage for designing these buildings and determining their limit. In this paper, a numerical computation of pressure on overline bridge surface by a high speed train head is carried out with 3D Panel method. Results of the computations show that on overline bridge a pressure pulse occurs while a train passes. the coefficients of the pressure pulse range from-0.135 to 0.095. The features of pressure distribution on overline bridge are discussed.