- 摘 要
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(中國建筑設(shè)計研究院 北京 100044)
【提要】 北京中關(guān)村金融中心連廊工程平面及立面均為弧形，支承在不同的結(jié)構(gòu)主體上，體型獨(dú)特，支承條件復(fù)雜。主體采用大跨度空間鋼桁架結(jié)構(gòu)體系，屋面采用異型空間剛架結(jié)構(gòu)體系。在施工階段，主桁架支座設(shè)計成縱向可自由滑動的滑動鉸支座，以釋放部分內(nèi)力。采用抗震球形鋼支座消除相對位移對各獨(dú)立主體結(jié)構(gòu)產(chǎn)生的影響。由于屋面風(fēng)荷載效應(yīng)顯著，通過風(fēng)洞試驗確定連廊屋面的風(fēng)壓分布情況。
【關(guān)鍵詞】 大跨度 空間鋼桁架 風(fēng)洞試驗 抗震球形鋼支座 滑動支座
Structural Design of Spatial Gallery of Zhongguancun Financial Center of Beijing/Wang Chunguang,Fan Zhong,Ying Fenfang(China Architecture Design & Research Group,Beijing 100044,China)
Abstract:The spatial gallery of Zhongguancun Financial Center of Beijing is very special for the planar and the supporting conditions are very complicated.Large span steel spatial truss system is adopted for the floor structure and allotype gabled frames are adopted for the roof structure.In order to partial release the internal forces,the bearing of the main trusses are designed as free sliding bearings in construction stage.Special bearing devices are adopted to overcome differential displacements between independent buildings.As the response of the structure under wind loads is significant,the distribution of wind pressure on the roof is determined by wind tunnel test.
Keywords:large span structure;steel spatial truss;wind tunnelapproach;special bearing;sliding free bearing
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