中文摘要：

连续梁桥是高速铁路上的一种典型桥梁，利用计算流体力学软件对其不同截面在不同工况下的静气动性能进行了数值模拟，研究了平均风速、风攻角、宽高比以及桥上列车分布状况分别对桥梁截面三分力系数的影响。研究结果表明：风速和风攻角对桥梁的静气动性能影响显著；梁高的增大使桥梁处于不利的风荷载作用下；gL桥上有列车状态下桥梁的静气动性能不如无车时稳定。

英文摘要：

Continuous beam bridge is a typical bridge form on high - speed railway. A CFD software was used to simulate and calculate tri - component force coefficient of continuous beam bridge on high - speed railway under different operating conditions. The effect of average wind speed attack angle, aspect ratio and the distribution of train on tri - component force coefficient of bridge section was investigated respectively. The results indicate that both wind speed and attack angle have an obvious influence on bridge＇ s aerostatie performance, and the increase of beam height leads to the corresponding increase of wind load, and bridge ＇s aerostatic performance under the presence of train is less stable than that without train varies with the situation of train on bridge.