串列六边形截面桥塔气动干扰效应研究

为了研究串列六边形截面塔柱的气动干扰效应,采用数值模拟方法研究串列塔柱的三分力系数。首先,对正方形截面的三分力系数进行数值模拟,验证数值模型的准确性;然后,计算单个塔柱截面的上游和下游截面的三分力系数;最后,考查了间距等参数的影响。结果表明,对单个塔柱截面来说,上游截面阻力系数较大,上下游两个截面的升力系数斜率完全相反。对串列塔柱截面来说,上游截面的阻力系数在两截面的距离较小时会变大,但距离较大时会变小;下游截面的阻力系数比单个截面的小,而升力系数和力矩系数的变化较小。

Research on Aerodynamic Interference Effect of Tower with Tandem Hexagonal Section

In order to study the aerodynamic interference effect of tandem hexagonal cross-section columns, the three-component force coefficient of tandem towers is studied by numerical simulation method. Firstly, the numerical simulation of the three-component force coefficient of square section is carried out to verify the accuracy of the numerical model. Then, the three-component coefficient of the upstream and downstream sections of a single tower section is calculated. Finally, the influence of parameters such as spacing is examined. The results show that for the single column section, the upstream section has a large drag coefficient and the slopes of the lift coefficients of the upstream and downstream sections are completely opposite. For the tandem column section, the drag coefficient of the upstream section is smaller, but becomes smaller when the distance is larger. The drag coefficient of the downstream section is smaller than that of the single section, and the change of the lift coefficient and the moment coefficient is small..