高耸塔架横风向动力风效应

在现行的荷载规范、高耸结构设计规范以及能源部颁发的《架空送电线路杆塔结构设计技术规定》（ＳＤＧＪ９４－９０）中，对格构式塔架的横风向风振力均未作考虑。作者通过对气动弹性模型风洞试验和国外现场实测资料的分析，论证格构式塔架具有几乎与顺风向等同的横风向风振力，以期在设计中引起足够的重视，并且根据试验结果提出了横风向风振力的简化计算公式。

ACROSS-WIND DYNAMIC RESPONSE OF TALL LATTICED TOWERS

Wind-induced Dynamic response in across-wind direction for tall latticed towers has not been considered in the present load code of building structures, design code of latticed structure and design code of transmission tower. This paper is going to prove that the wind-induced dynamic forces are almost equivalent in along-wind direction and across-wind direction based upon the results of a wind tunnel aerodynamic test and two field measurements. It is emphasized that the wind-vibration forces in two sway directions have to be considered in the design of tall latticed towers. A simplified for mula for calculating across-wind vibration force is presented in accordance with the test results.