廣東科學(xué)中心復(fù)雜空間網(wǎng)格結(jié)構(gòu)設(shè)計(jì)
李霆1，陳興1，錢屹1，張季超2，徐天平3
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（1 中南建筑設(shè)計(jì)院股份有限公司，武漢 430071； 2 廣州大學(xué)土木工程學(xué)院，廣州 510006；3 廣東省建筑科學(xué)研究院，廣州 510006）［摘要］廣東科學(xué)中心A，B區(qū)上部大跨鋼屋蓋為體型復(fù)雜的曲面空間網(wǎng)格結(jié)構(gòu)，曲面高差達(dá)41m；中庭透明屋蓋上部設(shè)有六片寬達(dá)9m的巨型遮陽板，風(fēng)載及風(fēng)振較大。工程通過風(fēng)洞試驗(yàn)及風(fēng)振分析解決了抗風(fēng)問題。此外，為了滿足建筑效果及支撐遮陽板的需要，采用了豎腹桿貫通的新型圓鋼筒節(jié)點(diǎn)，并對該型節(jié)點(diǎn)進(jìn)行了節(jié)點(diǎn)試驗(yàn)和分析；為了抗風(fēng)需要，支撐網(wǎng)殼的抗拔支座及混凝土柱采用了預(yù)應(yīng)力技術(shù)。介紹了該復(fù)雜空間網(wǎng)殼結(jié)構(gòu)的造型、布置、節(jié)點(diǎn)設(shè)計(jì)和結(jié)構(gòu)分析。［關(guān)鍵詞］網(wǎng)格結(jié)構(gòu)；網(wǎng)殼；圓鋼筒節(jié)點(diǎn)；風(fēng)洞試驗(yàn)；風(fēng)振Structural design on the complex spatial grid structure of Guangdong Science CenterLi Ting1, Chen Xing1, Qian Yi1, Zhang Jichao2, Xu Tianping3(1 Central-south Architectural Design Institute Co., Ltd., Wuhan 430071, China; 2 School of Civil Engineering, Guangzhou University, Guangzhou 510006, China; 3 Guangdong Provincial Academy of Building Research, Guangzhou 510006, China)Abstract:The long-span steel roof in areas A and B of Guangdong Science Center is a complex spatial grid structure with an elevation of 41m. Six 9m wide giant sun visors over the central transparent part bears the action of intensive wind load and wind-induced response, so wind tunnel tests and wind-induced response analysis had been adopted to solve the wind action problem. Besides, considering the architecture and the requirement of the brace for the sun visor, a new type of circular tube steel joint is utilized and a particular joint test and finite element analysis had been conducted. Prestress technic has been used in concrete columns and the anti-pulling bearings of the latticed shell. The structural modeling, layout, analysis and joint design of the complex spatial latticed shell are introduced for design of the structure.Keywords:grid structure; latticed shell; circular tube steel joint; wind tunnel test; wind-induced vibration*廣東省科技計(jì)劃項(xiàng)目(2004B10101048),(2005A11601014),(2006B37301009)；建設(shè)部科技計(jì)劃項(xiàng)目(2005K148),(2006K301),(2007K309)。作者簡介：李霆，教授級高工，總工程師， Email:lting@vip.sina.com。參考文獻(xiàn)［1］李霆,李宏勝,尹優(yōu),等.廣東科學(xué)中心大跨巨型鋼框架結(jié)構(gòu)設(shè)計(jì)［J］. 建筑結(jié)構(gòu),2010，40(8).［2］約翰奇爾頓. 空間網(wǎng)格結(jié)構(gòu)［M］. 北京: 中國建筑工業(yè)出版社, 2004.［3］李星榮,魏才昂,丁峙NFDA1,等.鋼結(jié)構(gòu)連接節(jié)點(diǎn)設(shè)計(jì)手冊［M］.北京:中國建筑工業(yè)出版社,2005.［4］易和,王良福,張季超,等.廣東科學(xué)中心的風(fēng)洞試驗(yàn)研究［J］.建筑技術(shù),2006，37(增刊).
［5］張季超,朱立宏，周云，等.工程災(zāi)害防護(hù)技術(shù)在廣東科學(xué)中心建設(shè)中的研究與應(yīng)用［J］.工程力學(xué),2006，23(S2):200-209.
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