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（北京市建筑設(shè)計(jì)研究院有限公司, 北京 100045）

［摘要］福州數(shù)字中國(guó)會(huì)展中心是“數(shù)字中國(guó)”建設(shè)峰會(huì)的永久會(huì)址，主要功能為展覽、會(huì)議中心及配套用房。項(xiàng)目為7度抗震設(shè)防的重點(diǎn)設(shè)防類建筑，具有結(jié)構(gòu)空間尺度大、荷載重、空間關(guān)系多變的特點(diǎn)。創(chuàng)新性應(yīng)用大跨度延性桁架式框架體系，同時(shí)合理布置層間屈曲約束支撐，改善了結(jié)構(gòu)的安全性和經(jīng)濟(jì)性。為滿足結(jié)構(gòu)整體受力需求，對(duì)層間斜撐的截面、布置位置進(jìn)行了對(duì)比分析；為滿足大跨空間的承載力設(shè)計(jì)需求，對(duì)桁架布置形式、端部上弦截面形式和端部下弦BRB布置進(jìn)行了著重考慮。通過(guò)樓蓋振動(dòng)分析和布置調(diào)諧質(zhì)量阻尼器，解決了大跨空間的舒適度問(wèn)題。通過(guò)結(jié)構(gòu)體系的特殊設(shè)計(jì)使曲面幕墻達(dá)到了通透的視覺(jué)效果。

［關(guān)鍵詞］鋼框架-支撐結(jié)構(gòu)； 大跨結(jié)構(gòu)； 屈曲約束支撐； 延性桁架； 舒適度

中圖分類號(hào)：TU393-3文獻(xiàn)標(biāo)識(shí)碼：A文章編號(hào)：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