武漢保利廣場大跨減震連接體結構設計
王小南，李霆，袁理明，彭林立
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王小南，李霆，袁理明，彭林立（中南建筑設計院股份有限公司，武漢 430071）[摘要] 武漢保利廣場兩棟不對稱塔樓之間設有42.5m跨、5層高的鋼結構連接體。連接體與兩側塔樓采用剛接連接方式，采用主、次桁架的結構形式：沿跨度方向設置2榀主桁架，沿寬度方向設置4榀次桁架托換上部框架。連接體剛度對整體結構的動力特性有顯著影響,為減少整體結構的地震扭轉反應，連接體主桁架中部斜腹桿采用屈曲約束支撐（BRB）。連接體采用了抗震性能化設計思路，以彈性分析方法為主，結合靜力彈塑性分析及彈塑性時程分析方法進行驗證，重點考慮了連接體的溫度作用及樓板平面內受力。連接體采用“液壓同步提升技術”進行整體提升，設計中對該過程進行了詳細的模擬分析。在提升施工過程中對連接體位移及應變進行了監(jiān)測。[關鍵詞] 超高層； 連接體； 屈曲約束支撐； 消能減震； 施工模擬中圖分類號：TU973.1+9， TU973.1+3文獻標識碼：A 文章編號：1002-848X(2012)12-0013-06Structure design of long-span connective structure with energy dissipation of Wuhan Poly PlazaWang Xiaonan, Li Ting, Yuan Liming, Peng Linli（Central-south China Architectural Design Institute Co., Ltd., Wuhan 430071, China）Abstract: Between the two asymmetrical towers of Wuhan Poly Plaza, there is a 42.5m span, 5-storey hight steel connective structure. The connective structure rigidly connects with the two tower.The main and sub truss system are used to form the connective structure，two main trusses are set along the span direction, and four sub trusses are set along the width direction to support the frame structure above. Since the stiffness of the connective structure have a significant affect on the dynamic characteristics of the whole building, the buckling restrained brace (BRB)is installed in the middle span of the main truss of the connective structure to reduce the torsional responses of the building under earthquake. The connective structure was designed based on seismic performance use elastic analysis theory. The pushover analysis and elastic-plastic time-history analysis were carried out for validation. The temperature effect and force in the plane of the floor slabs is especially considered. The hydraulic synchronizing technology is used to elevate the connective structure.In the design process, a detailed construction phase simulation analysis was applied. Monitoring of displacement and strain of the connective structure has been carried out during the lifting construction process.Keywords: ultra-high-rise building; connective structure; buckling restrained brace; earthquake energy dissipation；construction phase simulation analysis作者簡介：王小南，教授級高級工程師，Email:Wangxn@csadi.net.參考文獻［1］ 李霆，王小南,范華冰，等.武漢保利廣場混合減震連體高層結構設計［J］.建筑結構，2012，42(12)：1-7，25.［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］ 侯加健，李楨章，韓小雷，等.雙塔連體超高層建筑結構連接方案比較［J］.工程抗震與加固改造，2006，28（6）：81-84,80.［4］ 周云.屈曲約束支撐結構設計應用［M］.北京：中國建筑工業(yè)出版社，2007.［5］ 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.［6］ 汪大綏，姜文偉,包連進，等.中央電視臺（CCTV）新主樓的結構設計及關鍵技術［J］.建筑結構, 2007, 37（5）：1-7.
