考虑裁切线的张拉膜结构水平风荷载响应分析  

The corresponding analysis on tensioned membrane structure horizontal wind load considering of cutting line

作　　者：武红周 Wu Hongzhou(China Railway 7th Bureau Group Overseas Company,Zhengzhou 450016,China)

机构地区：[1]中铁七局集团海外公司,河南郑州450016

出　　处：《山西建筑》2022年第22期59-62,共4页Shanxi Architecture

摘　　要：张拉膜结构作为一种通过对钢索和膜面直接施加预拉力使其具有足够的刚度,以承担外部荷载的稳定结构,索和膜均只受拉。膜结构对风荷载极为敏感,且膜裁剪是膜结构施工必不可少的环节,经过裁剪后的膜结构抗风性能分析成为至关重要环节。选取规范中静力风荷载和动力风荷载,采用Davenport谱脉动风模型,以常见马鞍形张拉膜结构为例,结合裁剪前后相同位置点的荷载响应,说明裁切线影响了膜结构的承载能力,该研究对膜结构设计和应用具有一定参考价值。The tensioned membrane structure is a stable structure with sufficient stiffness to bear external load by directly applying pre-tension to the cable and membrane surface. The cable and membrane are only tensioned. Membrane structure is sensitive to wind load, and membrane cutting is an essential link in membrane structure construction, and wind resistance performance analysis of membrane structure after cutting becomes a crucial link. The static wind load and dynamic wind load in the code are selected, the Davenport spectral fluctuating wind model is adopted, and the load response at the same position before and after cutting is taken as an example to show that the cutting line affects the bearing capacity of the membrane structure.This study has certain reference value for the design and application of membrane structure.

关 键 词：张拉膜 裁切线 风荷载 脉动风 Davenport风速谱 

分 类 号：TU312.1[建筑科学—结构工程]