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（1 同濟(jì)大學(xué)建筑設(shè)計(jì)研究院（集團(tuán)）有限公司，上海 200092；2 同濟(jì)大學(xué)建筑工程系，上海 200092）

［摘要］以最大層間位移角為優(yōu)化目標(biāo)，提出一種簡單有效的向量積算法，可以快速確定最優(yōu)的伸臂桁架設(shè)置數(shù)目及位置。以上海中心大廈為例，給出了該算法的應(yīng)用方法及過程，并結(jié)合分析結(jié)果對帶伸臂超高層結(jié)構(gòu)的最優(yōu)伸臂道數(shù)及位置的設(shè)置規(guī)律進(jìn)行了分析。對于典型的100層以上的超高層建筑，向量積算法的效率比常規(guī)的窮舉法提高約28倍。分析表明，最優(yōu)的伸臂桁架設(shè)置方案與桁架設(shè)置的數(shù)目和位置均有關(guān)系，且伸臂桁架設(shè)置方案的最優(yōu)性并非隨著伸臂桁架數(shù)目的增加而增加。

［關(guān)鍵詞］超高層結(jié)構(gòu);伸臂桁架;位置;數(shù)目;靈敏度向量法

中圖分類號：TU973文獻(xiàn)標(biāo)識碼：A文章編號：1002-848X(2011)05-0020-04

Sensitivity vectors algorithm that fast determine favorable arrangement of outriggers for super tall buildings with outrigger systems

Zhao Xin¹, Liu Nanxiang², Zheng Yimin¹, Ding Jiemin¹(1 Architectural Design & Research Institute of Tongji University (Group) Co., Ltd., Shanghai 200092, China; 2 Building Department, Tongji University, Shanghai 200092, China)

Abstract:Sensitivity vectors algorithm (SVA) method was put forward to fast determine the favorable arrangement of setting number and position of outriggers for super tall buildings with outrigger systems, based on the maximum drifts control. Shanghai Tower project was taken as an example to illustrate the proposed SVA method and the setting rules involving number and position of outrigger systems were discussed. It is illustrated that SVA method can be 28 times faster than the regular method for the typical super tall buildings over 100 floors. It is also shown that the favorable arrangement is relevant to both the setting number and position of outriggers, rather than directly proportional to the setting number.

Keywords:super tall buildings; outrigger system; position; number; sensitivity vectors algorithm

*上海市科技攻關(guān)計(jì)劃（09dz1207704），上海市青年科技啟明星計(jì)劃（跟蹤）（11QH1402700）。

作者簡介：趙昕，博士，高級工程師，Email：22zx@tjadri.com。

參考文獻(xiàn)

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［4］WU J R, LI Q S. Structural performance of multi-outrigger-braced tall buildings［J］. The Structural Design of Tall and Special Buildings, 2003(12): 155-176.

［5］丁潔民. 高層建筑水平帶狀桁架的最佳位置及側(cè)移折減系數(shù)［J］. 建筑結(jié)構(gòu)， 1991,21（2）:10-13.