武漢保利廣場混合減震連體高層結構設計
李霆，王小南，范華冰，袁理明，黃銀燊，劉峻
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李霆，王小南，范華冰，袁理明，黃銀燊，劉峻(中南建筑設計院股份有限公司，武漢 430071）[摘要] 武漢保利廣場是由兩棟高度不同的塔體組成的高位大跨連體復雜高層建筑，塔樓均采用“圓鋼管混凝土柱+H型鋼梁或鋼桁架+鋼筋混凝土核心筒”結構，連接體采用鋼桁架結構。由于超高層核心筒完全偏置在一側，為減小及控制扭轉振動，除兩端加密柱外，還設置了非線性粘滯阻尼器。在42.5m大跨連體主桁架中部，斜腹桿采用屈曲約束支撐（BRB），以使在大震下連體中部可以上下錯動耗能，減小主體結構的扭轉。動力彈塑性分析及振動臺模型對比試驗表明，粘滯阻尼器及BRB減震效果明顯。另外，還介紹了大廳42.5m×55.9m單層索網(wǎng)幕墻設計及4層地下室 “隔水-排水”抗浮設計等。[關鍵詞] 超高層; 連接體; 粘滯阻尼器; 混合減震; 排水抗浮; 單層索網(wǎng)幕墻中圖分類號：TU973.1+9， TU973.3+2文獻標識碼：A 文章編號：1002-848X(2012)12-0001-07Structure design on connected double-tower of Wuhan Ploy Plazza with mixed energy dissipation devicesLi Ting, Wang Xiaonan, Fan Huabing, Yuan Liming, Huang Yingshen, Liu Jun(Central-south China Architectural Design Institute Co., Ltd., Wuhan 430071, China）Abstract: Wuhan Poly Plaza is a connected double-tower structure, each tower has different height and is consisted of concrete filled steel tubes with steel girders and concrete core walls, and the connecting structure with 42.5m span is made of steel trusses. Because the higher core tube completely offsets on one side, in order to reduce and control the torsion vibration, nonlinear fluid viscous dampers were setup in the structure. In the middle of connecting main truss, buckling restrained braces (BRB) were used as diagonals web members, which permit up-and-down deformation at the middle of the main trusses under seldomly occured earthquake, thereby reduce torsion of the main tower. The elastic-plastic time-history analysis and shaking table model tests show that BRB and viscous dampers absorb seismic energy effectively. The design of the sigle cable-net glass wall which is 42.5m wide and 55.9m high, and the design of drainage anti flosting were also introduced.Keywords: ultra-high rise building; connected structure; fluid viscous damper; mixed energy dissipation; drainage anti floating; sigle cable-net glass wall作者簡介：李霆，教授級高級工程師，Email：lting@vip.sina.com。參考文獻［1］ 王小南，李霆，袁理明，等. 武漢保利廣場大跨減震連接體結構設計［J］.建筑結構，2012，42(12)：13-18，36.［2］ 李霆，王小南，黃銀燊，等. 武漢保利廣場混合減震連體高層抗震性能研究［J］.建筑結構，2012，42(12):8-12,31.［3］ 徐培福,傅學怡，王翠坤，等.復雜高層建筑結構設計［M］.北京：中國建筑工業(yè)出版社，2005.［4］ 武漢大學結構風工程研究所. 保利文化廣場風洞試驗與抗風性能分析報告 ［R］. 2008.［5］ 廣州大學結構工程研究所. 武漢保利文化廣場模擬地震振動臺試驗研究報告 ［R］. 2009［6］ 尹華鋼，李志強，劉曉華，等.北京新保利大廈結構抗震設計［J］.建筑結構，2007，37（4）：1-5.
