考虑风与结构耦合作用时电视塔结构的风振响应  

Wind-induced Vibration Response of TV-tower Structure Considering Wind-structure Interaction

作　　者：范存新[1] 薛松涛[2] 陈镕[2] 唐和生[2] 

机构地区：[1]苏州科技学院,江苏苏州215011 [2]同济大学结构工程与防灾研究所

出　　处：《苏州大学学报（工科版）》2006年第4期27-30,38,共5页Journal of Soochow University Engineering Science Edition (Bimonthly)

基　　金：建设部科技项目(编号04-2-042);苏州市科技项目(编号SS0511)

摘　　要：目前在通常的结构风振响应的计算中,一般并不考虑风荷载与结构的耦合作用,但是对基频较低的高层建筑或高耸结构,风与结构的耦合作用不容忽视。本文根据风的统计特征,将风速模拟成时间的函数,然后在结构的运动微分方程中考虑风速与结构速度的耦合作用,并提出采用傅立叶变换-时频迭代法来求解结构的运动微分方程,最后得到结构的风振响应。计算结果表明对电视塔结构应考虑风与结构的耦合作用。In the ordinary calculation of the wind-induced vibration, the wind-structure coupling effect is not considered. The wind-structure interaction has the significant effect to the tall buildings and high-rise structures with the lower first frequent, The basic method of this paper is to simulate wind velocity as a function of time according to the statistics character of wind firstly. Then the differential equations of structural system are solved by using the Fourier transform-time domain iteration method considering the coupling effect of wind velocity and structure velocity. From the analysis, it is clear that more attention should be paid to the wind-structure coupling effect to the TV-Tower structure.

关 键 词：电视塔结构 耦合 非线性 风振响应 

分 类 号：TU311[建筑科学—结构工程]