大跨度预应力钢结构在国家体育馆工程中的应用  

APPLICATION OF LARGE-SPAN PRESTRESSED STEEL STRUCTURE IN NATIONAL GYMNASIUM PROJECT

作　　者：胥飞 

机构地区：[1]北京市建设工程安全质量监督总站,北京100073

出　　处：《建筑技术》2009年第6期507-510,共4页Architecture Technology

摘　　要：国家体育馆屋盖采用大跨度钢结构。大跨度钢结构通过施加预应力可有效节约钢材,且自身刚度大,预应力结构受力合理,可抵消大部分自重和屋面其他安装悬挂物的附加应力,应变较小,中心挠度小,后期应力应变健康监测便利,可随时调整预应力,保证结构安全稳定。Successful prestressing construction of large-span steel structure in National Indoor Stadium Project obtained great achievements and accumulated abundant experiences in design and construction of largespan prestressed steel structure. Large-span steel structure can effectively reduce steel material use through application of prestress, and has high rigidity and reasonable load-carrying prestressed structure which can offset most self weight and additional stress of other suspension on roof. In addition, this structure has such features as small deformation, low central deflection, convenient stress and strain health monitor, flexible prestress adjustment and safe and reliable structure.

关 键 词：预应力钢索 预应力张拉 应力监测 应变监测 

分 类 号：TU723[建筑科学—建筑技术科学]