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（奧雅納工程顧問， 深圳 518048）
［摘要］深圳華潤大沖舊村改造項目某地塊由3棟超B級高度的塔樓和裙房組成，為大底盤多塔結(jié)構(gòu)。其中2棟塔樓采用框架-核心筒結(jié)構(gòu)體系，主要特點為高區(qū)斜墻轉(zhuǎn)換，東西側(cè)框架柱不同軸；1棟塔樓采用框架-外置雙筒結(jié)構(gòu)體系，主要特點為筒體偏置。針對結(jié)構(gòu)特點，提出了異形柱建模和設(shè)計的方法，在斜墻轉(zhuǎn)換部位合理埋置型鋼以保證結(jié)構(gòu)安全性，闡述了外框架不同軸的工作機理及加強措施，總結(jié)了框架-外置雙筒結(jié)構(gòu)體系的受力特點和設(shè)計要點。對結(jié)構(gòu)進行了小震彈性、中大震彈塑性等的深入分析和驗算，以確保整體結(jié)構(gòu)設(shè)計的安全可靠及合理經(jīng)濟。
［關(guān)鍵詞］大底盤多塔； 異形柱模擬和設(shè)計； 框架-外置雙筒體系； 斜墻轉(zhuǎn)換； 外框不同軸
中圖分類號：TU318-2文獻標(biāo)識碼：A文章編號：1002-848X(2017)14-0043-08
Structural design on complex out-of-code project of Shenzhen CRC Dachong
Xin Yingpei, Yang Tianxiang, Lin Fengjun, Chen Wenyu, Sun Yang
(Arup, Shenzhen 518048, China)
Abstract:CRC Dachong Urban Renewal Project in Shenzhen consists of three towers exceeding B-class height requirement of code and a large podium. It is a system of multi-towers on large chassis. The frame-corewall structural system is adopted in two towers, with inclined wall transfer in higher zone of the building and discontinuous outer frame. The rest tower adopts frame-outer double corewall structural system. Considering structural characteristics, the modeling and design methods for irregular-shaped column were introduced. The section steel was embedded in the inclined wall transfer parts to ensure the structural safety, and working mechanism and strengthening details for discontinuous outer frame were expounded. The mechanical characteristics and design essentials for frame-outer double corewall structural system were summarized. Further analysis and check on structure were conducted including elastic analysis under frequent earthquake and elasto-plastic analysis under fortification and rare earthquakes, so the safety, reasonability and economy of the structure can be ensured.
Keywords:multi towers on large chassis; simulation and design of irregular shaped column; frame outer double corewall structural system; inclined wall transfer; discontinuous outer fram
作者簡介：信瑛佩，碩士，工程師，Email: ying-pei.xin@arup.com。
