福州海峽國際會展中心擴(kuò)建項(xiàng)目外傾式落地空間拱桁架結(jié)構(gòu)設(shè)計(jì)
許富貴，魏艷芳，倪烽，朱興剛
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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］福州海峽國際會展中心擴(kuò)建項(xiàng)目平面呈長橢圓形，縱向長度為280m，橫向?qū)挾葹?2m，結(jié)構(gòu)高度為15.60m。結(jié)構(gòu)橫向采用單榀雙曲空間管桁架，與縱向空間管桁架構(gòu)成格構(gòu)式鋼框架結(jié)構(gòu)體系。結(jié)構(gòu)體型復(fù)雜，抗震要求高，整體結(jié)構(gòu)縱向穩(wěn)定性偏弱。采用MIDAS/Gen，MIDAS/FEA軟件對結(jié)構(gòu)進(jìn)行了整體抗震設(shè)計(jì)和抗連續(xù)倒塌、整體穩(wěn)定、關(guān)鍵節(jié)點(diǎn)應(yīng)力分析，結(jié)果表明結(jié)構(gòu)具有良好的抗連續(xù)倒塌和整體穩(wěn)定性能，在保證結(jié)構(gòu)安全的前提下，完美實(shí)現(xiàn)了建筑藝術(shù)與結(jié)構(gòu)的有機(jī)結(jié)合。［關(guān)鍵詞］雙曲空間管桁架; 抗連續(xù)倒塌; 整體穩(wěn)定; 關(guān)鍵節(jié)點(diǎn)中圖分類號：TU318，TU393.3 文獻(xiàn)標(biāo)識碼：A 文章編號：1002-848X(2015)18-0082-05
Structural design on extraversion landing space arch truss of Fuzhou Strait International Conference and Exhibition Center expansion projectXu Fugui, Wei Yanfang, Ni Feng, Zhu Xinggang(Beijing Institute of Architectural Design, Beijing 100045, China)Abstract: The shape of Fuzhou Strait International Conference and Exhibition Center expansion project is oval, with longitudinal length of 280m, transverse width of 82m and structural height of 15.60m. The lattice steel frame structural system is composed of transverse hyperbolic spatial pipe truss and longitudinal spatial pipe truss. The structure shape is complex with high requirements of seismic resistance, and the structure has lower global stability in the longitudinal direction. Programs of MIDAS/Gen and MIDAS/FEA were used to carry out global seismic design of the structure, the progressive collapse resistance analysis, global stability analysis and stress analysis of key nodes. The results show that the structure has good resistance to progressive collapse and well global stability, and the perfect combination of architectural art and structure is achieved under the premise of ensuring the structural safety.Keywords: hyperbolic spatial pipe truss; progressive collapse resistance; global stability; key node
作者簡介：許富貴，碩士，工程師，一級注冊結(jié)構(gòu)工程師，Email：xufugui@biad.com.cn。
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