A study of the aerodynamic characteristics of circular steel tubular lattice tower bodies in an ultrahigh-voltage direct-current transmission tower under skew winds is presented. The objective of the study, which was based on experimental and numerical methods, was to investigate the aerodynamic coefficients of tower bodies under both yaw and tilt angles. Scaled rigid models of tower bodies with a scale ratio of 1:30 were tested, and the influence of the wind velocity and turbulence intensity on the aerodynamic coefficient was examined. Furthermore, a modified formula for the skewed wind load factor is proposed and compared with different standards. The aerodynamic coefficients of tower bodies with different solidity ratios and tilt angles were obtained via numerical simulation. Additionally, a recommended calculation formula of tilted wind load factor is proposed. The results show that the drag coefficients calculated by standards for different yaw angles were significantly underestimated and that the wind direction corresponding to the predicted maximum drag coefficient was inconsistent with observed wind direction. The formulas proposed in this study accurately describe the characteristics of wind load factor under different yaw and tilt angles. In particular, the influence of the tilt angle on the drag coefficient cannot be ignored.

研究了斜风下超高压直流输电塔中圆形钢管格子塔体的空气动力特性。该研究的目标是基于实验和数值方法，其目的是研究在偏航角和倾斜角下塔身的空气动力系数。测试了比例为1:30的塔体的比例缩放刚性模型，并研究了风速和湍流强度对空气动力系数的影响。此外，提出了偏风荷载系数的修正公式，并与不同标准进行了比较。通过数值模拟得到了不同固结比和倾斜角的塔身的空气动力学系数。此外，提出了倾斜风荷载系数的推荐计算公式。结果表明，通过标准计算得出的针对不同偏航角的风阻系数被大大低估了，并且与预测的最大风阻系数相对应的风向与观测到的风向不一致。这项研究中提出的公式准确地描述了不同偏航角和倾斜角下的风荷载因子的特征。特别地，不能忽略倾斜角对阻力系数的影响。这项研究中提出的公式准确地描述了不同偏航角和倾斜角下的风荷载因子的特征。特别地，不能忽略倾斜角对阻力系数的影响。这项研究中提出的公式准确地描述了不同偏航角和倾斜角下的风荷载因子的特征。特别地，不能忽略倾斜角对阻力系数的影响。