某钢箱梁独塔斜拉桥采用双索面形式,且该桥处于我国东南沿海的台风多发区,抗风稳定性是控制该桥设计和施工的主要因素。本文以该桥成桥状态的动力特性为基础,进行了主梁断面和桥塔断面气动力参数CFD数值计算,分析了该桥的静力扭转发散临界风速、涡激共振和颤振稳定性,最后,进行了风荷载分析和风荷载响应计算。结果表明:该桥成桥状态均具有良好的抗风稳定性,运营过程中出现抗风问题的几率不大。 A steel box girder single pylon cable-stayed bridge with double cable form, and the bridge in the southeastern coast of China typhoon prone area, wind stability is to control the bridge design and construction of the main factors. In this paper, based on the dynamic characteristics of the bridge into the bridge state, the CFD numerical calculation of the aerodynamic parameters of the main girder section and the bridge tower section was carried out. The critical wind speed, vortex-induced resonance and flutter stability of the bridge were analyzed. Finally, wind load analysis and wind load response calculation were carried out. The results show that all the bridges in the bridge have good wind stability, and there is not much wind-resistance during operation.