刘正权，  刘海波，  董人文
（中国建筑材料检验认证中心门窗幕墙实验室，北京 100024）

[摘要]  张拉索杆结构是点支式玻璃幕墙最常见的支承体系之一，属于-种柔性结构，对外荷载的作用比较敏感。建立了点支式玻璃幕墙张拉索杆支承体系的非线性动力特性分析的有限元模型，分析了该结构的自振频率与各阶振型，并进一步研究了初始预拉力、拉索截面面积、撑杆截面面积和撑杆长度几个主要的发计参数以及玻璃质量变化对该结构的自振频率的影响。
[关键词]  点支式玻璃幕墙；张拉索杆；动力特性；自振频率；参数分析

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