| 大跨度球面网壳结构的风振系数研究 |
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| 引用本文： | 韩庆华,陈越,曾沁敏,刘锡良.大跨度球面网壳结构的风振系数研究[J].地震工程与工程振动,2007,27(1):38-45. |
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| 作者姓名： | 韩庆华 陈越 曾沁敏 刘锡良 |
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| 作者单位： | 天津大学,建筑工程学院,天津,300072;天津大学,建筑工程学院,天津,300072;天津大学,建筑工程学院,天津,300072;天津大学,建筑工程学院,天津,300072 |
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| 基金项目： | 国家自然科学基金项目（50608054） |
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| 摘 要： | 大跨度球面网壳结构应用日趋广泛,其结构特点使风荷载常常起主要甚至是控制作用,风振动力响应研究日益受到关注与重视。本文讨论了网壳结构风振响应时程分析计算方法,并采用节点位移风振系数来衡量网壳结构风振特性。对角锥型双层球面网壳结构进行了不同几何参数即跨度、矢高、球壳厚度等多种情况下的位移风振系数的研究,得出该类网壳的风振系数随几何参数的变化规律,并回归出计算公式,为双层球面网壳结构的抗风设计提供参考。
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| 关 键 词： | 球面网壳结构 风振响应 风振系数 时程分析 几何参数分析 |
| 文章编号： | 1000-1301（2007）01-0038-08 |
| 修稿时间： | 2006-08-162006-09-21 |
Analysis of wind-induced vibration coefficient for long-span reticulated dome |
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| Han Qinghua,Chen Yue,Zeng Qinmin,Liu Xiliang.Analysis of wind-induced vibration coefficient for long-span reticulated dome[J].Earthquake Engineering and Engineering Vibration,2007,27(1):38-45. |
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| Authors: | Han Qinghua Chen Yue Zeng Qinmin Liu Xiliang |
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| Institution: | School of Civil Engineering, Tianjin University, Tianjin 300072, China |
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| Abstract: | The long-span reticulated shells are widely used in roof structures.Due to the sensibility to wind load,the wind is always the major or even the critical load applied to such structures.So study on dynamic response of reticulated shell structures under wind load is paid more and more attention to.In this paper,the computational method of wind-induced vibration response of reticulated shell structures in time domain is discussed,and the wind-induced vibration coefficient of nodal displacement is used to evaluate the vibration characteristics of such structures.Parametric analysis of wind-induced vibration coefficient of nodal displacement for a batch of quadrangular pyramid type double-layer dome shells under different geometric parameters,including span,depth,and thickness,is carried out.Some wind-induced vibration rules are formulated and a formula by linear regression is proposed,which may be a reference of the wind-resistance design of double-layer reticulated domes. |
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| Keywords: | reticulated domes dynamic response of wind-induced vibration wind-induced vibration coefficient time domain analysis geometrical parameter analysis |
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