高耸结构的风荷载试验研究

Wind Tunnel Tests Study on the Tall Tower Structure Model

南京奥体中心的观光塔为一高耸结构,其风荷载是必须考虑的问题之一。由于观光平台及观光塔本身形状的复杂性,建筑规范无法准确给出其风荷载,因此需要在风洞中进行测压测力试验,以测定观光塔整体及局部风载,获得风场数据。文章介绍了整个试验过程,并对试验结果进行分析,根据各风向角下的风压分布特征给出了结构抗风设计和考虑载人时的最不利风向角与最大风压值,可为观光塔结构强度设计、电梯间及观光平台的玻璃幕墙设计提供风荷载依据。

The sightseeing tower of Nanjing Olympic Game Center is a tall structure,which wind load must be concerned.Because of the complexity of the supporting structure,we can not get the accurate wind load data from the building codes.Then a model of the building is tested in tunnel to get the data.This paper presents the whole process of the test.By analysis of data acquired from wind field,load-distributing character of wind pressure on the obtuse structure is given.