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(中國(guó)建筑東北設(shè)計(jì)研究院有限公司， 沈陽(yáng) 110006)

［摘要］以高1180m的中國(guó)建筑千米級(jí)摩天大樓為載體，在3個(gè)周邊單塔+中央交通核每100m通過2層共15m高連接平臺(tái)剛性連接的連接平臺(tái)樓層、3個(gè)周邊單塔上設(shè)置7種不同伸臂桁架方案，來(lái)研究伸臂桁架對(duì)結(jié)構(gòu)剛度、剛重比、周期、樓層剪力、位移及框架承擔(dān)剪力占基底剪力百分比等結(jié)構(gòu)設(shè)計(jì)控制指標(biāo)的影響。研究結(jié)果表明：伸臂桁架對(duì)結(jié)構(gòu)的平動(dòng)剛度影響較大，對(duì)扭轉(zhuǎn)剛度影響較??；可顯著提高結(jié)構(gòu)整體剛度，增大結(jié)構(gòu)的剛重比；伸臂桁架對(duì)結(jié)構(gòu)的樓層剪力影響不大；可有效減小結(jié)構(gòu)的樓層位移角，對(duì)這種巨型組合結(jié)構(gòu)體系的底部加強(qiáng)部位框架承擔(dān)剪力占基底剪力百分比的影響甚微。

［關(guān)鍵詞］千米級(jí)摩天大樓； 超限高層； 巨型組合結(jié)構(gòu)體系； 伸臂桁架； 剛重比； 周期

中圖分類號(hào)：TU973文獻(xiàn)標(biāo)識(shí)碼：A文章編號(hào)：1002-848X(2017)03-0015-04

Impact of different arranged location of outriggers on 1 000m-high skyscraper of CSCEC

Chen Peng, Chen Yong, Wu Yihong

(China Northeast Architectural Design & Research Institute Co., Ltd., Shenyang 110006, China)

Abstract:The 1 000m-high out-of-code high-rise building skyscraper has height of 1 180m and it consists of 3 main surrounding towers and one central traffic tower which are rigidly connected by two stories 15m-high connected platform  in every 100m. Seven different types of outrigger schemes were set on the 3 surrounding towers, to study the influence of outriggers on structural design controlling parameters including structural rigidity, rigidity-to-gravity ratio, period, story shear forces, displacements, ratio of shear force carried by frames to total base shear force. The study results indicate that outriggers have  large influence on structural planar displacement stiffness, while providing small influence on torsional stiffness. Outriggers can significantly increase the total stiffness of the whole structure, resulting in the increase of the rigidity-to-gravity ratio. Outriggers have small influence on story shear force and can effectively reduce the inter-story displacement angle. Outriggers have minimal impact on the ratio of shear force carried by frames in bottom strengthening part to total base shear force in mega composite structural system.

Keywords:1 000m-high skyscraper; out-of-code high-rise building; mega composite structural system; outrigger; rigidity-to-gravity ratio; period

*中建股份科技研發(fā)課題(CSCEC-2010-Z-01-02)。

作者簡(jiǎn)介：陳鵬，碩士，高級(jí)工程師，Email：chenpenghit@126.com。