风荷载作用下单层平面索网体系点支式玻璃幕墙的动力性能研究

近年来,单层平面索网体系点支式玻璃幕墙以其简洁、通透的特点在国内外得到广泛的应用,其破坏主要由风荷载造成,目前国内外针对此种结构的风振动力性能研究甚少。本文应用谐波叠加法模拟了脉动风速的时程曲线,进而得到风荷载;通过有限元分析软件ANSYS,对单层平面索网体系点支式玻璃幕墙模型进行动力风荷载下的时程分析,研究在动力风荷载下,幕墙的玻璃面板厚度、拉索截面积以及拉索预拉力对其受力性能的影响,以供幕墙设计参考。

Study on Dynamic Performance of Monolayer Cable Net Point-supporting Glass Curtain Wall under Wind Load

In recent years,monolayer cable net point-supporting glass curtain wall is adopted widely due to its simplicity and limpidity. It is mainly destroyed by wind load,but research of the dynamic characteristic of this kind of structure is only a few. This paper uses the harmonic wave superposition method to simulate the curve of fluctuating wind,and obtain the wind load further. By using finite element analysis software,this paper analyzes monolayer cable net point-supporting glass curtain wall under dynamic wind load in time domain and studies the influence of thickness of glass panel,area of cross-section of tensile cable,and pretension of tensile cable on load-bearing performance of curtain wall under dynamic wind load,and provides reference for the design of curtain wall in the future.