（北京市建筑设计研究院有限公司, 北京 100045）

［摘要］福州数字中国会展中心是“数字中国”建设峰会的永久会址，主要功能为展览、会议中心及配套用房。项目为7度抗震设防的重点设防类建筑，具有结构空间尺度大、荷载重、空间关系多变的特点。创新性应用大跨度延性桁架式框架体系，同时合理布置层间屈曲约束支撑，改善了结构的安全性和经济性。为满足结构整体受力需求，对层间斜撑的截面、布置位置进行了对比分析；为满足大跨空间的承载力设计需求，对桁架布置形式、端部上弦截面形式和端部下弦BRB布置进行了着重考虑。通过楼盖振动分析和布置调谐质量阻尼器，解决了大跨空间的舒适度问题。通过结构体系的特殊设计使曲面幕墙达到了通透的视觉效果。

［关键词］钢框架-支撑结构； 大跨结构； 屈曲约束支撑； 延性桁架； 舒适度

中图分类号：TU393-3文献标识码：A文章编号：1002-848X(2019)18-0077-05

Structural design of Fuzhou Digital China Convention and Exhibition Center

Zhang Yanhua, Zhen Wei, Sheng Ping, Zhang Lei

（Beijing Institute of Architectural Design， Beijing 100045， China)

Abstract:Fuzhou Digital China Convention and Exhibition Center is the permanent site of DIGITAL CHINA Construction Summit. The main functions of the center include exhibition center, conference center and supporting facilities. The project is a key fortification category structure with 7 degree seismic fortification intensity. The characteristics of the building consist of large space scale, heavy load distribution and complex spatial relationship. Through rational use of inter-layer buckling restrained brace and innovation of the large-span ductile truss, the safety and economy of the structure were highly improved. To meet the entire structural performance requirement, the different cross-sectional shapes and positions of inter-layer buckling restrained brace were analyzed. To achieve higher load bearing capacity, the layout of truss, the cross-sectional shape of upper chord and the position of buckling restrained brace(BRB) at the end of the lower chord were discussed. Through floor vibration analysis and tuned mass damper, the comfort problem of the large-span space was solved. Structural system was specially designed to achieve the transparent visualization of glass curtain wall.

Keywords:steel braced frame structure; large-span structure; buckling restrained brace; ductile truss; comfort