单层平面索网玻璃幕墙结构的抗风性能研究

Research of single-plane cable-net curtain wall on wind resistance

单层平面索网玻璃幕墙结构是一种既新颖又富有表现力的新型点支式幕墙形式,在大型建筑上取得了广泛的应用.本文通过对某商务中心天灯层的超高空单层平面索网幕墙结构建立有限元模型,再进行模型简化分析,确定预应力施加大小,以风洞试验结果为基础,将风荷载时程作为荷载直接作用在有限元模型上,并对风静力分析和风动力分析做出对比,得出对工程有实际指导意义的幕墙实用抗风设计方法.

The monolayer plane cable net curtain wall is one of the newly-developed type of point supported glass curtain wall which has been widely applied in large buildings behaving as a neoteric and expressive structure. To take the practical engineering project named Commercial Center as an example, which is a specific super high-rise structure with cable net curtain wall, the paper first established the finite element model and then conducted a simplified model analysis. The result finally confirmed the magnitude of the prestress. What’s more, based on the wind tunnel test, the time-history wind load was directly applied for the finite model to compare the static wind analysis with the dynamic wind analysis, which can serve as a helpful guidance for practical engineering project on wind resistance.