大跨度高位連體結構抗震設計
婁榮，陳威文，卓春笑，戴杭亮
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婁榮，陳威文，卓春笑，戴杭亮（華匯工程設計集團，紹興 312000）[摘要] 詳細介紹了某四塔高位連體結構的抗震設計。連接體采用鋼結構平面桁架體系，兩個方向跨度均超過58m，屬超限結構。根據(jù)連接體與筒體之間的不同連接方式，將分析模型簡化為雙塔連體結構。結合工程特點及超限情況，確定各構件的性能化抗震設計目標。對連接體及筒體角柱進行了中震彈性設計，并對連接體單獨進行了三水準下豎向地震時程分析。在進行多遇水平地震分析時，采用兩組地震波記錄和一組人工波進行時程分析，并采用CQC組合進行了譜分析，結果表明各項指標均在規(guī)范允許的范圍以內。采用基于能力譜法的Pushover方法研究了結構的彈塑性破壞機制，結果表明現(xiàn)行設計能夠滿足性能化設計目標。[關鍵詞] 連體結構；性能化抗震設計；連接體；Pushover方法中圖分類號：TU318-82文獻標識碼：A文章編號：1002-848X(2012)11-0044-05Seismic design of high-position large-span connected structureLou Rong, Chen Weiwen, Zhuo Chunxiao, Dai Hangliang（Huahui Engineering Design Group Co., Ltd., Shaoxing 312000, China）Abstract: Seismic design of a four-tower high-position connected structure was illustrated. With a structural system of steel planar truss, the span of connecting structure is more than 58m. The model was simplified to a double-tower connected structure, according to connection property between steel planar truss and tower. Performance objectives of seismic design were proposed with consideration of the design beyond code limits. Elastic design under moderate earthquake was carried out for connecting structure and corner columns. Vertical earthquake analysis of three-level was carried out. During normal seismic analysis, two natural ground acceleration records and one artificial record were applied in time-history analysis, and CQC combination was applied in the response spectrum analysis. It shows that the results can satisfy the code requirements. During ultimate seismic analysis, Pushover method based on capacity spectrum method was applied, as shown in the results, the structure can achieve performance objectives.Keywords: connected structure; performance-based seismic design; connecting structure; Pushover method作者簡介：婁榮，博士，工程師，Email：ghost261412@163.com.參考文獻［1］ 超限高層建筑工程抗震設防專項審查技術要點［S］.2010.［2］ 黃坤耀.雙塔連體結構的靜力、抗震和抗風分析［D］.杭州：浙江大學,2004.［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］ JGJ 3-2010高層建筑結構混凝土技術規(guī)程［S］. 北京：中國建筑工業(yè)出版社，2011.［5］ American Society of Civil Engineers. FEMA 356 Prestandard and commentary for the seismic rehabilitation of buildings［S］. Washington D.C.: Federal Emergency Management Agency, 2000.［6］ 侯書利, 張南, 李俊峰,等. 某復雜連體高層結構抗震設計［J］.建筑結構，2010，40(10)：26-29.［7］ 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.［8］ 芮佳, 王毓麟.新天地國際大廈基于目標位移的Pushover分析［J］.建筑結構，2010，40(11)：45-48.［9］ 汪大綏, 賀軍利, 張鳳新.靜力彈塑性分析(Pushover Analysis)的基本原理和計算實例［J］.世界地震工程，2004，20(1)：45-53.
