中宇國際大廈超高層結(jié)構(gòu)抗震設計
于錦華，肖志斌，劉中華，干鋼
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于錦華，肖志斌，劉中華，干鋼（浙江大學建筑設計研究院，杭州 310027）［摘要］中宇國際大廈主樓為高204m的超限高層建筑，采用圓形鋼管混凝土柱框架鋼筋混凝土核心筒混合結(jié)構(gòu)體系。為保證結(jié)構(gòu)延性，針對超限情況及結(jié)構(gòu)體系，提出性能設計目標，利用承載力及變形驗證不同水準下結(jié)構(gòu)與構(gòu)件的抗震性能，包括小震彈性計算、中震彈性關鍵構(gòu)件驗算以及罕遇地震下的彈塑性動力時程分析。工程采用了3種不同的計算軟件進行結(jié)構(gòu)分析，以提高結(jié)構(gòu)設計的可靠性。計算結(jié)果表明，通過采取相應的設計措施，可以實現(xiàn)預定的性能目標，工程抗震性能良好，結(jié)構(gòu)體系安全可行。［關鍵詞］超高層；混合結(jié)構(gòu)；抗震設計；斜柱中圖分類號：TU398.9 文獻標識碼：A 文章編號：1002-848X(2013)02-0007-05Seismic design on ultra-limit high-rise building for Zhongyu International PlazaYu Jinhua, Xiao Zhibin, Liu Zhonghua, Gan Gang（Architectural Design and Research Institute of Zhejiang University, Hangzhou 310027, China）Abstract: A frame-core wall hybrid system was applied in Zhongyu International Plaza, which exceeds the limit of the code-specification with the height of 204m. In order to guarantee the ductility of the structure, the performance-based seismic design method was adopted and its performance objectives were proposed. Through elastic analysis under frequent earthquake, elastic analysis of critical components under medium earthquake and elastic-plastic dynamic time-history analysis under rare earthquake, seismic performances of the structure and components were verified based on bearing capacity and deformation results under different levels. Structural analysis was carried out by three different calculation software to enhance the reliability of the structural design. The results indicate that the performance objectives can be well realized by proper design measures, and the structure is safe and reliable.Keywords: ultra-limit highrise building; hybrid structure; seismic design; inclined column參考文獻［1］ GB 50011—2010 建筑抗震設計規(guī)范［S］. 北京：中國建筑工業(yè)出版社,2010.［2］ GB 50009—2001 建筑結(jié)構(gòu)荷載規(guī)范［S］. 2006年版. 北京：中國建筑工業(yè)出版社,2006.［3］ JGJ 3—2002 高層建筑混凝土結(jié)構(gòu)技術規(guī)程［S］. 北京：中國建筑工業(yè)出版社,2002.［4］ 徐培福，傅學怡，王翠坤，等. 復雜高層建筑結(jié)構(gòu)設計［M］.北京：中國建筑工業(yè)出版社,2005.［5］ 周穎，呂西林. 中震彈性設計與中震不屈服設計的理解及實施［J］. 結(jié)構(gòu)工程師,2008,24(6):1-5.
