输电线路设计规范中风荷载计算方法的比较

通过对我国GB 50545-2010《110～750 kV架空送电线路设计技术规范》与国际电工学会规范IEC 60826-2003、美国输电线路规范ASCE 74-2009、日本输电线路规范JEC 127-1979中输电线路设计风荷载的计算公式与各个计算参数设定的比较，在输电线路设计中可以更好理解输电线路风荷载的计算。以1条500 kV输电线路的典型铁塔为例，分析了相同设计条件下不同标准计算结果的差别。结果表明我国规范计算的风荷载在数值上与其他三者差别不大，但在各个参数规定上值得进一步讨论。

Comparison of Wind Load Calculation Standards for Power Transmission Lines

In order to better understand the wind load calculation in the transmission line design, the calculation formulas of wind load and the setting of calculation parameters were compared among four different design standards: Technical Code for Designing 110~750 kV Overhead Transmission Line (GB 50545-2010) in China, IEC 60826-2003, ASCE 74-2009 and JEC 127-1979. Moreover, based on the calculation and comparison of wind load in a real 500 kV project, the differences among the calculation results of different standards were analyzed under the same design condition. The results show that the wind load defined in the China’s code is little numerical different from those calculated by other codes, however, some parameters are still worthy of further discussion.