以洞庭湖大桥桥塔(主塔)为研究对象,基于Fluent软件平台,采用Realizable和SST两种湍流模型对桥塔表面风压分布特性进行了数值模拟,将模拟结果与现场实测值进行了比较,以此验证了所提数值模拟方法的可行性;预测和探讨了桥塔在不同风速及不同风向下对其五分力系数的影响,并对五分力系数的影响变化规律进行了总结,从而为钻石型建筑结构的抗风设计提供一定的参考。 Taking the tower of Dongting Lake Bridge (main tower) as the research object, based on the Fluent software platform, two types of turbulence models, Realizable and SST, were used to simulate the wind pressure distribution characteristics of the bridge tower. The simulation results were compared with the field measurements , Which verifies the feasibility of the proposed numerical simulation method. The influence of the bridge tower on its five-component force coefficient at different wind speeds and wind directions is predicted and discussed. The variation rules of the five-component force coefficient are summarized. Thus providing some reference for the wind-resistant design of diamond-type building structure.