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《建筑科学与工程学报》[ISSN:1673-2049/CN:61-1442/TU]

卷:

26卷

期数:

2009年04期

页码:

87-94

栏目:

出版日期:

2009-12-20

文章信息/Info

Title:

Comparison of Vibration Plans of High-rise Building with Protrusion

作者:

刘纯^1,2,汪大洋¹,周云¹

1.广州大学土木工程学院,广东广州510006;2.广州城建职业学院建筑工程系,广东广州510925

Author(s):

LIU Chun^1,2, WANG Da-yang¹, ZHOU Yun¹

1. School of Civil Engineering, Guangzhou University,Guangzhou 510006, Guangdong, China; 2. Department of Construction Engineering, Guangzhou City Construction College, Guangzhou 510925, Guangdong, China

关键词:

高层建筑;  突出物;  粘滞阻尼器;  幕墙开洞;  风振控制

Keywords:

high-rise building;  protrusion;  viscous damper;  making hole in curtain wall;  wind-induced vibration control

分类号:

TU973.23

DOI:

-

文献标志码:

A

摘要:

采用改进的自回归模型模拟了某带突出物高层建筑结构的脉动风荷载时程,针对其自身特点,提出了突出物玻璃幕墙开洞(方案A)、设置粘滞阻尼器(方案B)、玻璃幕墙开洞与设置粘滞阻尼器相结合(方案C)的3种减振方案。在10年和50年一遇2种风振作用下,对该工程进行了不同减振方案下的风振动力分析,最后依据分析结果对类似结构体系风振控制的分析与设计提出了建议。结果表明:方案B和方案C具有大量耗散风振输入能量、有效衰减结构动力响应和降低结构风振作用的能力,可减小主体结构顶点位移和加速度响应的最大幅度分别为34.6%、36.8%,提出的减振方案对于抑制结构风致振动、提高结构安全性和舒适性具有可行性和有效性。

Abstract:

Wind-induced vibration control of a high-rise building with protrusion was selected as an example. Fluctuating wind-speed time history of the structure was simulated by modified AR model. According to natural characteristics of the high-rise building, three kinds of vibration plans of making holes in curtain walls(plan A), adding viscous dampers(plan B), and making holes in curtain walls and adding viscous dampers(plan C)were presented. Structural dynamic analysis of the control plans was studied in wind-induced vibration occured once in 10 years and 50 years. The control effect of the three plans was analyzed in detail. Finally, suggestions of wind-induced vibration control for similar structural system were presented. The results show that the control plans B and C can dissipate energy induced by wind and can attenuate dynamic responses effectively. The maximum displacement and acceleration response of the top story can be reduced by 34.6% and 36.8% respectively. So, the presented plans are feasible and effective to control structural wind-induced vibration and improve structural safety and comfort.

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备注/Memo

备注/Memo:

收稿日期:2009-09-13
基金项目:教育部高等学校博士学科点专项科研基金项目(200810780001); 广东省自然科学基金项目(8351009101000001)
作者简介:刘 纯(1983-),男,湖南邵阳人,工学硕士,E-mail:zhydxs@163.com。

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更新日期/Last Update: 2009-12-20