- 摘 要
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（奧雅納工程顧問， 北京 100020）
［摘要］北京大望京626地塊2號樓為一超限高層辦公樓，主塔樓采用型鋼梁+圓鋼管混凝土柱組合框架-鋼筋混凝土核心筒結(jié)構(gòu)體系，無加強層。項目為超高、超限結(jié)構(gòu)，抗震設(shè)防烈度為8度，受地震作用影響較大，設(shè)計時基于不同性能水準(zhǔn)下的抗震性能目標(biāo)，依據(jù)相關(guān)規(guī)范及風(fēng)洞試驗，對結(jié)構(gòu)設(shè)計方案及整體性能進(jìn)行詳細(xì)研究。主塔樓彈性分析采用兩種不同的分析軟件計算對比，并應(yīng)用LS-DYNA進(jìn)行動力彈塑性分析。由結(jié)果可知，工程整體結(jié)構(gòu)性能滿足相關(guān)規(guī)范要求，結(jié)構(gòu)設(shè)計安全，構(gòu)件設(shè)計主要由地震作用或重力荷載控制；罕遇地震下結(jié)構(gòu)抗震性能滿足“大震不倒”的性能目標(biāo)。
［關(guān)鍵詞］組合框架； 斜柱； 構(gòu)件性能設(shè)計； 墻肢拉應(yīng)力； 彈塑性分析
中圖分類號：TU318文獻(xiàn)標(biāo)識碼：A文章編號：1002-848X(2017)14-0007-06
Structural design of No.2 super high-rise office building in lot 626 of Greater Wangjing District in Beijing
Li Xiuying, Zhu Yansong, Liu Hao, Yang Mingliu, Liu Peng
(Arup, Beijing 100020, China)
Abstract:The main tower building of No.2 out-of-code high-rise office building in Lot 626 of Greater Wangjing District in Beijing consists of frame steel beam+concrete-filled steel round tubular column composite frame-reinforced concrete corewall structural system without strengthening layers. The project is a super high-rise, out-of-code structure, with 8 degree of seismic fortification intensity. It is largely impacted by the earthquake action. The design was based on seismic performance objectives under different performance levels, and a detailed research was conducted on the structural design scheme and overall performance according to the relevant specifications and wind tunnel test. Two different analytical programs were used to compare the elastic analysis of the main tower building, and the dynamic elastic-plastic analysis was carried out by LS-DYNA. Results show that the overall structural performance of the project meets the requirements of the relevant specifications, and the structural design is safe. The design of the components is mainly controlled by seismic action or gravity load. The seismic performance of the structure under rare earthquakes meets the performance goals of “not collapsing under rare earthquakes”.
Keywords:composite frame; inclined column; component performance-based design; tensile stress in wall; elastic-plastic analysis
作者簡介：李秀英，碩士，結(jié)構(gòu)工程師，Email: abby.li@arup.com。
