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朱立剛， 張志強， 梁金桐
（奧雅納工程咨詢有限公司，上海 200031）[摘要] 重慶“嘉陵帆影”超高層項目共有三個塔樓，其中二期超高層塔樓總高度440m，是目前中國西南地區(qū)第一高樓。結構中低區(qū)采用帶有腰桁架組合的鋼管混凝土外框架+鋼筋混凝土組合核心筒+伸臂桁架，高區(qū)采用帶有帽桁架的鋼框架+鋼支撐。結構沿豎向設置5道腰桁架和一道帽桁架以及4道桁架；為減少墻厚和自重，核心筒底部加強區(qū)采用組合鋼板剪力墻，底部六層以下采用大直徑鋼管混凝土柱，6—83層采用方鋼管混凝土柱，83層以上采用箱型截面的鋼柱。對結構進行了彈性及彈塑形動力分析，各項分析結果均滿足規(guī)范及抗震審查專家組的要求，整體結構安全可靠，經(jīng)濟合理。在彈性和彈塑性動力時程分析中，共采用14組時程波，以確?？拐鹦阅芤蟮陌踩煽俊?br /> [關鍵詞] 混合結構；鋼管混凝土；組合鋼板剪力墻；加強層；剪重比；外框架剪力分配；彈塑性時程分析
中圖分類號：TU375 文獻標識碼：A 文章編號：1002-848X(2012) Sl-0251-10Design and study on super high rise structural system of CQ project Tower 2
Zhu Ligang, Cheung Penny, Luong Andrew
( Arup Intemational Consultants( Shanghai) Ltd., Shanghai 200031, China)Abstract: The Chongqing super high rise building project has three towers, tower 2 is 440m tall and it will become one of the tallest buildings in southwest China. The tower cleverly adopts the combined lateral stability system of reinforced concrete core and perimeter CFT-column-beam moment frame, linked by 5 stories belt tmsses and 4 stories outriggers. In order to reduce the tluckness of core wall to comply with the strict code axial- force-ratio requirements, composite steel plate wall( CSPW) was adopted in the core walls at the tower bottom. The seismic design of tower has satisfied the strict requirement of expert panel review. The design had considered 14 sets of elastic and elasto-plastic time history analysis, demonstrating structural safety and satisfying the requirement of seismic performance.
Keywords: composite structure; concrete filled steel tube; composite steel plate wall; strengthening story; shear-weight ratio; distribution of outer frame shear force; elasto-plastic analysis
