脉动风作用下高耸塔结构风振响应研究

Wind-induced Response of High-rise Tower Structure with Fluctuating Wind Load

根据脉动风的特性对脉动风荷载进行模拟并验证其有效性,得到作用在高耸塔结构上的脉动风荷载时程样本。在此基础上,建立塔结构的空间三维有限元模型,采用时程分析方法计算塔结构的风振动力响应。结果表明脉动风作用下高耸塔结构顶部风振响应较大,因而需要采取有效措施抑制其风振响应。

According to the characteristics of fluctuating wind, the fluctuating wind load was simulated, its va- lidity was confirmed and samples of the fluctuating wind load were obtained. Established 3-D finite element model of the tower, and calculated the wind-induced vibration response of the tower by time-history analysis method. The results indicate that the wind-induced response is larger at the top of high-rise tower structure un- der the function of fluctuating wind load, and the effective method was suggested to control its wind-induced vibration response.