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劉正權， 劉海波， 董人文
（中國建筑材料檢驗認證中心門窗幕墻實驗室，北京 100024）[摘要] 張拉索桿結構是點支式玻璃幕墻最常見的支承體系之一，屬于-種柔性結構，對外荷載的作用比較敏感。建立了點支式玻璃幕墻張拉索桿支承體系的非線性動力特性分析的有限元模型，分析了該結構的自振頻率與各階振型，并進一步研究了初始預拉力、拉索截面面積、撐桿截面面積和撐桿長度幾個主要的發(fā)計參數(shù)以及玻璃質量變化對該結構的自振頻率的影響。
[關鍵詞] 點支式玻璃幕墻；張拉索桿；動力特性；自振頻率；參數(shù)分析Natural frequencies parameters analysis on tension cable strut supporting system of point supported gass curtain walls
Liu Zhengquan, Liu Haibo, Dong Renwen
(Laboratory of Building Facades, China Building Material Test ＆Certifcation Center, Beijing 100024, China)Abstract: Prestressed tension cable strut structure is one of the supporting systems which is widely used for point- supported glass curtain wall. It is very impotant to study its dynamic characteristics because the flexible structure is sensitive to exterior loading. The finie elemert model for the nonlinear dynamic characteristics of this prestressed tension cable-strut structure of point-supported glass curtain wall is established, and its natural vibratim frequencies and vibration modas, the changes of design parameters such as cable's section area, strut's section area and strut's length, prestressing force and glasss quality and their effects on this structuIes natural frequencies are studied. The conclusion can be used for structure design by engineers.
Keywords: point supported glass curtain wall; tension cable-strut; dynamic characteristics; natural frequency; parameter analysis
