广东科学中心典型区域的风振响应及风振控制

刘 纯 周 云 张季超 汪大洋

振动与冲击 ›› 2009, Vol. 28 ›› Issue (9) : 60-64.

PDF(2780 KB)
PDF(2780 KB)
振动与冲击 ›› 2009, Vol. 28 ›› Issue (9) : 60-64.
论文

广东科学中心典型区域的风振响应及风振控制

  • 刘 纯 周 云 张季超 汪大洋
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Wind-induced Vibration Response and Wind-induced Vibration Control of the Typical Area of Guangdong Science Center

  • Liu Chun Zhou Yun Zhang Jichao Wang Dayang
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摘要

以广东科学中心典型区域为研究对象,利用AR法模拟了该结构的脉动风速时程,进行不同风压、不同风向角下的风振响应分析,给出了采用非线性粘滞阻尼器的六种风振控制方案,并对不同方案的减振效果进行了对比研究。结果表明:所提减振方案对结构的风振反应具有很好的减振效果,结构顶点位移和加速度响应的最大降幅达18%和84.9%;对此类不规则大跨结构,建议将阻尼器安装在结构两侧以取得最好的减振效果;安装粘滞阻尼器对结构加速度的控制效果优于对结构侧移的控制效果。

Abstract

Based on Auto-Regressive method, fluctuating wind velocity series were simulated, and the wind-induced vibration response for the typical area of Guangdong Science Center in different wind pressure and in different wind directions was studied. Six kinds of wind-induced vibration control plans of adding non-linear viscous dampers are given and the control effects of different plans were analyzed in detail. The results show that the wind-induced vibration responses of the structure are reduced effectively by using the reducing vibration plans. The max vertex displacement and acceleration response can be respectively reduced by 18% and 84.9%. For the irregular long-span structures, it is suggested that the dampers are installed in the two sides of them to get the maximal reducing-vibration effect. For the structure with viscous dampers, the control effect of acceleration is better than that of displacement

关键词

广东科学中心 / 脉动风荷载 / AR法 / 风振控制分析 / 粘滞阻尼器

Key words

Guangdong Science Center / fluctuating wind load / auto-regressive method / wind-induced vibration control analysis / viscous dampers

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刘 纯 周 云 张季超 汪大洋. 广东科学中心典型区域的风振响应及风振控制[J]. 振动与冲击, 2009, 28(9): 60-64
Liu Chun Zhou Yun Zhang Jichao Wang Dayang. Wind-induced Vibration Response and Wind-induced Vibration Control of the Typical Area of Guangdong Science Center[J]. Journal of Vibration and Shock, 2009, 28(9): 60-64

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