九江文化中心自由曲面鋼屋蓋結(jié)構(gòu)設(shè)計(jì)
韓重慶1，黃桂新2，陳浩曼2，張翀1
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韓重慶1，黃桂新2，陳浩曼2，張翀1（1 東南大學(xué)建筑設(shè)計(jì)研究院有限公司， 南京 210096； 2 東南大學(xué)土木工程學(xué)院， 南京 210096）［摘要］九江文化中心鋼屋蓋外形為造型輕盈的自由曲面，根據(jù)不同部位的受力特點(diǎn)，采用由雙層螺栓球網(wǎng)殼、空間管桁架、樹狀支撐系統(tǒng)雜交而成的空間網(wǎng)格結(jié)構(gòu)。重點(diǎn)介紹了鋼屋蓋的結(jié)構(gòu)體系布置、靜載分析、動(dòng)力特性、整體穩(wěn)定及多維多點(diǎn)地震響應(yīng)分析。分析結(jié)果表明：關(guān)鍵部位的管桁架有效地增強(qiáng)了結(jié)構(gòu)的整體剛度；樹狀支撐與大跨屋蓋共同形成了高效的拱形受力機(jī)理；跨越多棟建筑的鋼屋蓋需進(jìn)行多維多點(diǎn)地震響應(yīng)分析；曲面的面外變形可顯著地降低溫度應(yīng)力。［關(guān)鍵詞］雙層網(wǎng)殼； 管桁架； 樹狀支撐； 雜交結(jié)構(gòu)； 多維多點(diǎn)地震響應(yīng)分析中圖分類號(hào)：TU242.4，TU318.2 文獻(xiàn)標(biāo)識(shí)碼：A 文章編號(hào)：1002-848X(2013)05-0029-06Structural design on the free-form steel roof for Jiujiang Cultural CentreHan Chongqing1, Huang Guixin2, Chen Haoman2, Zhang Chong1(1 Architects & Engineers Co., Ltd. of Southeast University, Nanjing 210096, China; 2 College of Civil Engineering, Southeast University, Nanjing 210096, China)Abstract: The shape of steel roof for Jiujiang Cultural Centre is light free-form surface. According to the mechanical characteristics of different parts, the steel roof adopts spatial latticed structure which is consisted of double-layer reticulated shell, space tube truss and dendritic support system. Structural layout, static analysis, dynamic characteristic, overall stability and multi-dimensional and multi-support earthquake excitation analysis were mainly introduced. The results indicate that: the tube truss arrangement in key positions enhances the structural rigidity effectively; the dendritic support together with large-span roof is served as arched stress mechanism; the steel roof which spans multiple buildings needs multi-dimensional and multi-support earthquake excitation analysis; out-of-plane deformation of free-form structure reduces temperature stress significantly.Keywords: double-layer reticulated shell; tube truss; dendritic support; hybrid structure; multi-dimensional and multi-support earthquake excitation analysis作者簡介：韓重慶,博士,高級工程師,Email:chq_han@seu.edu.cn。參考文獻(xiàn)［1］GB 50011—2010建筑抗震設(shè)計(jì)規(guī)范［S］. 北京:中國建筑工業(yè)出版社,2010.［2］GB 50068—2001建筑結(jié)構(gòu)可靠度設(shè)計(jì)統(tǒng)一標(biāo)準(zhǔn)［S］. 北京:中國建筑工業(yè)出版社, 2001.［3］JGJ 7—2010空間網(wǎng)格結(jié)構(gòu)技術(shù)規(guī)程［S］. 北京:中國建筑工業(yè)出版社, 2010.［4］陳浩曼. 九江文化中心不規(guī)則空間網(wǎng)殼的抗震關(guān)鍵性能研究［D］.南京:東南大學(xué),2012.
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