中文摘要：

利用高频测力天平风洞试验分别得到了三种典型的格构式塔架的基底弯矩、基底剪力时程，在此基础上提出了格构式塔架的风载体型系数取值方法，进而计算出上述格构式塔架在不同工况下的风载体型系数。通过将风洞试验得到的结果与荷载规范的值进行对照，得到了一些有用的结论。

英文摘要：

The base moment and base shear force time series of three typical lattice towers are obtained based on base balance technique in a boundary layer wind tunnel. On the basis of this work, the method to calculate wind load shape coefficients of lattice towers is proposed, and the wind load shape coefficients of above mentioned lattice towers are evaluated at various conditions. At last, throught comparing the results obtained from wind tunnel tests with those from load code of China and US, some useful conclusions are obtained.