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(中國建筑設(shè)計(jì)研究院  北京 100044)
【提要】  北京中關(guān)村金融中心鋼結(jié)構(gòu)主塔樓為國內(nèi)首座平面和立面均為雙曲面的超高層鋼結(jié)構(gòu)建筑,建筑面積79 318m²,總高度150m,地下4層,地上35層,采用鋼框架-支撐體系,其中層1～4為型鋼混凝土結(jié)構(gòu)。曲面上的框架柱隨著立面的變化全部采用斜柱。介紹了金融中心鋼結(jié)構(gòu)主塔樓分析的結(jié)構(gòu)方案、線性和非線性分析、折線柱的處理、過渡層、梁柱外伸式連接節(jié)點(diǎn)等設(shè)計(jì)中需要解決的相關(guān)問題。
【關(guān)鍵詞】  鋼結(jié)構(gòu)  超高層建筑  結(jié)構(gòu)設(shè)計(jì)  型鋼混凝土  框架支撐
Structural Design  and Analysis of Main Tower of Zhongguancun Financial Center of Beijing/Shen Lin,  Hu Chunyang,  Hu Tianbing,  Fan Zhong,  Yu Yinquan(China Architecture Design & Research Group, Beijing 100044, China)
Abstract:The main tower　of Zhongguancun financial center in  Beijing is the first hyperboloidal super highrise building　in China, of which plane and faade are all curve. The total area of the building is 79 318m2, and the total height is 150m. The building consists of 4 stories underground and 35 stories overground. The structural system is steel braced frame and SRC system is used from floor 1 to floor 4. For the requirement of architectural function, the declining column along the curve must be used to substitute traditional vertical column. The structural design of the building is presented and several related problems such as structural scheme, linear and nonlinear analysis, solution of declining column, transitionfloor, joints which connecting beam to column with cantilever,are discussed.
Keywords:steel structure; super highrise building; structural design; frame; SRC; brace