YZ_(22)型车辆与铁路T型简支梁桥的风荷载研究

采用数值模拟技术 ,分别计算了横风中不同来流攻角下 YZ2 2型车辆单体、铁路 1 6m预应力 T形简支梁桥单体、YZ2 2 型车辆和铁路 1 6m预应力 T型简支梁桥组合体的阻力系数和升力系数 .研究表明 ,当 YZ2 2 型车辆通过铁路 1 6m T形简支梁桥时 ,YZ2 2 型车辆和 T形简支梁桥所受风荷载均比各自单独存在时明显增大 ,认为在桥梁设计时 ,应考虑车辆过桥对桥梁风荷载的影响 .

Investigation on Wind Loads for YZ_(22)Vehicle and Railway Freebeam Bridge

Aiming at the YZ_ 22 vehicle and the 16 m simply supported beam-bridge in crosswind,based on the numerical simulation,the conclusion that both the drag coefficients of the vehicle and the 16 m freebeam bridge with different angle of attack become obviously large is presented when the YZ_ 22 vehicle is running on the 16 m freebeam bridge,compared with those only considering the vehicle or the bridge;Correspondingly,wind loads on both of the 16 m freebeam bridge and YZ_ 22 vehide should be adjusted.