上海交通大学学报(自然版) ›› 2013, Vol. 47 ›› Issue (06): 862-866.

• 建筑科学 • 上一篇    下一篇

漏斗形开敞式膜结构的风致振动效应分析

周岱,钱锟,马骏,韩兆龙,洪荣华,季清   

  1. (上海交通大学 船舶海洋与建筑工程学院,上海 200240)
     
  • 收稿日期:2012-06-08 出版日期:2013-06-28 发布日期:2013-06-28
  • 基金资助:

    国家自然科学基金项目(51078230, 11172174),上海市优秀学术带头人计划(13XD1402100)资助

Analysis of Wind-induced Vibration Effects of a Funnel-shaped Open Membrane Structure

ZHOU Dai,QIAN Kun,MA Jun,HAN Zhaolong,HONG Ronghua,JI Qing
  

  1. (School of Naval Architecture, Ocean and Civil Engineering, Shanghai Jiaotong University, Shanghai 200240, China)
  • Received:2012-06-08 Online:2013-06-28 Published:2013-06-28

摘要:

采用谐波叠加法模拟风速时程,将风速时程转换为风荷载时程施于漏斗形膜结构,分析膜结构风振响应,获得结构各区块风致动力放大系数.计算表明:漏斗形敞开式膜结构各节点位移响应较为稳定且具有周期性,速度响应曲线和加速度响应曲线均较稳定;结构表面不同部位的风振响应差别较大,迎风面的风致动力放大系数较高,背风面风致动力放大系数平缓.
 
 

关键词: 膜结构, 风速时程模拟, 风致动力放大系数

Abstract:

By using the harmony superposition method (HSM), the wind velocity time history was simulated and converted to wind load time series. Applying the wind load time series to funnel-shaped open membrane structure(FOMS), the structural wind-induced vibration response and the wind-induced dynamic magnification factor were numerically investigated. The results revealed that the wind-induced nodal displacement, the velocity and acceleration responses of FOMS were stable, and the statistics for the wind-induced nodal displacement time history followed the Gaussian distribution. Furthermore, the windinduced dynamic magnification factor related to different parts of the structure varied significantly and the windinduced dynamic magnification factor on the windward part of structural system was greater than that on the leeward part.

Key words: membrane structure, wind velocity time series simulation, windinduced dynamic magnification factor

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