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（廣州瀚華建筑設(shè)計(jì)有限公司， 廣州 510655）

［摘要］邦華環(huán)球貿(mào)易中心為1幢高度為228-2m的超高層辦公樓，存在高度超限、扭轉(zhuǎn)不規(guī)則、樓板局部不連續(xù)等超限情況。采用設(shè)置伸臂大梁及腰梁加強(qiáng)層的框架（鋼管柱）-核心筒結(jié)構(gòu)體系。設(shè)計(jì)中采用了基于性能的抗震設(shè)計(jì)方法，根據(jù)結(jié)構(gòu)重要性提出不同的抗震性能目標(biāo)，對(duì)結(jié)構(gòu)進(jìn)行兩種不同力學(xué)模型程序的小震彈性對(duì)比分析、彈性時(shí)程分析、中震驗(yàn)算、大震作用下的彈塑性時(shí)程分析。分析結(jié)果表明：結(jié)構(gòu)整體及構(gòu)件抗震性能設(shè)計(jì)能達(dá)到性能C的目標(biāo)等級(jí)。對(duì)加強(qiáng)層及其相鄰層的框架柱、伸臂大梁及腰梁與框架柱連接位置等采取了有效加強(qiáng)措施，確保構(gòu)件滿足設(shè)定的抗震性能目標(biāo)。

［關(guān)鍵詞］超高層辦公樓； 抗震性能目標(biāo)； 鋼筋混凝土伸臂大梁； 整層高鋼筋混凝土腰梁

中圖分類號(hào)：TU318-2， TU375， TU973文獻(xiàn)標(biāo)識(shí)碼：A文章編號(hào)：1002-848X(2019)13-0030-05

Structural design of Bravo Global Trade Center Tower

Yan Shiji， Ye Yunqing

（Guangzhou Hanhua Architects+Engineers Co., Ltd., Guangzhou 510655， China）

Abstract:Bravo Global Trade Center Tower is a 228-2m high super high-rise office building. There are out-of-code conditions including height exceeding code limitation, irregular torsion and partial floor discontinuity. Frame-corewall structural system with concrete-filled steel tubular column, outrigger and waist beams was used. In the design, the performance-based seismic design method was adopted, different seismic performance targets were proposed according to the importance of the structure, and two different mechanical model programs were used for the comparative elastic analysis of under frequent earthquake, elastic time-history analysis, checking calculation under fortification earthquake, and elasto-plastic time-history analysis under the action of rare earthquake. The results show that the seismic performance of the whole structure and its components can reach the goal grade of performance C. Effective strengthening measures were taken for the frame column of the reinforcing layer and its adjacent layers, the connecting position of the beam and the waist beam with the frame column, etc., so as to ensure that the components meet the set seismic performance target.

Keywords:super high-rise office building; seismic performance target; reinforced concrete outrigger beam; entire floor high reinforced concrete waist beam

作者簡(jiǎn)介：嚴(yán)仕基，學(xué)士，高級(jí)工程師，一級(jí)注冊(cè)結(jié)構(gòu)工程師，Email: yanshij @gzhanhua.com。