玻璃对索网幕墙结构性能影响的实验研究

Experimental research on glass' influence on structural performance of cable-net curtain wall

点支式玻璃幕墙结构的索网与玻璃通过连接件进行连接,共同参与结构的受力。本文主要利用实验的方法研究了单层索网玻璃幕墙结构在振动荷载作用下的结构性能的变化,并进一步研究了玻璃面板对索网结构刚度以及索力松弛的影响的大小。研究结果表明索网幕墙结构在安装玻璃与未安装玻璃的情况下结构体系的振动频率明显不同,有玻璃索网幕墙比无玻璃情况下的频率有所下降。结构发生损伤时没有玻璃的结构比有玻璃时结构的频率反应要大。同时,通过对不同拉索预应力损失时的不同工况的研究得出了不同拉索的应力的松弛对幕墙结构体系的振动频率的影响。

In the point-supported cable net glass curtain wall structure, glass is connected to cable net structure by connectors, participating in structural stress. In this paper, in order to analyze the effect of cable stress relaxation and structural stiffness of cable net curtain wall, the change of frequency of the cable net curtain wall structure under different working conditions is studied. The results show that the frequency of cable net is decreased after installation of glass, when damage occurs in the same condition, the frequency response of the non - glass cable net is more obvious than the glass cable net. At the same time, through the study of different cable force loss I concluded the influence on the frequency of cable net curtain wall structure when the cable net force loss.