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(中國建筑東北設(shè)計研究院有限公司， 沈陽 110006)
［摘要］中國建筑千米級摩天大樓超限高層建筑高度1 180m，采用由3個周邊單塔+中央交通核每100m通過2層共15m高的連接平臺剛性連接而成的巨型組合結(jié)構(gòu)體系。4個單體均采用圓形鋼管混凝土柱+鋼框架梁+外包鋼板剪力墻結(jié)構(gòu)體系，在連接平臺樓層周邊單塔設(shè)置伸臂桁架和腰桁架，單塔沿弧形長度方向設(shè)置兩道巨型X形支撐。系統(tǒng)介紹了該項目的結(jié)構(gòu)體系及布置、地基基礎(chǔ)設(shè)計、地震作用和風荷載的確定方法和原則、抗震設(shè)防性能化目標；通過不同程序計算，對結(jié)構(gòu)整體計算結(jié)果進行分析，對外包鋼板剪力墻進行詳細研究，關(guān)鍵節(jié)點進行有限元模擬。研究表明，體系選擇合理，工程各項計算指標比較理想，結(jié)構(gòu)滿足性能化設(shè)計的要求。
［關(guān)鍵詞］千米級摩天大樓； 超限高層； 巨型組合結(jié)構(gòu)體系； 外包鋼板剪力墻； 性能化設(shè)計； 關(guān)鍵節(jié)點； 有限元分析
中圖分類號：TU973文獻標識碼：A文章編號：1002-848X(2017)03-0001-09
Structural design and research on the 1 000m-high skyscraper of CSCEC
Chen Yong, Chen Peng, Wu Yihong， Zhou Yu， Gao Jian
(China Northeast Architectural Design & Research Institute Co., Ltd., Shenyang 110006, China)
Abstract:The 1 000m-high skyscraper is an out-of-code high-rise building with height of 1 180m. The mega composite structural system consists of 3 main surrounding towers and one central traffic tower which are rigidly connected by two stories 15m-high connected platform in every 100m. Concrete filled steel tubular (CFST) column, steel beam and concrete filled steel (CFS) shear wall are used in the 4 single towers. Outriggers and belt trusses are set around the stories with connection platforms. And two mega X-typed bracings are arranged in both sides of each single tower. The structural system and arrangement, foundation design, principles and methods on determining the seismic action and wind load, seismic performance-based target were presented. Through the calculations by different programs, overall structural calculation results were analyzed and concrete filled steel shear wall was studied in detail. The finite element simulation was conducted on critical nodes. Study shows that the choice of the structural system is reasonable and each engineering calculation index is ideal. Design can meet the performance requirements.
Keywords:1 000m-high skyscraper; out\|of\|code high-rise building; mega composite structural system; concrete filled steel shear wall; performance-based design; critical node; finite element analysis
*中建股份科技研發(fā)課題(CSCEC-2010-Z-01-02)。
作者簡介：陳勇，博士，教授級高級工程師，Email：dr_cy@126.com。
