（1 同济大学建筑设计研究院（集团）有限公司，上海 200092；2 同济大学建筑工程系，上海 200092）

［摘要］以最大层间位移角为优化目标，提出一种简单有效的向量积算法，可以快速确定最优的伸臂桁架设置数目及位置。以上海中心大厦为例，给出了该算法的应用方法及过程，并结合分析结果对带伸臂超高层结构的最优伸臂道数及位置的设置规律进行了分析。对于典型的100层以上的超高层建筑，向量积算法的效率比常规的穷举法提高约28倍。分析表明，最优的伸臂桁架设置方案与桁架设置的数目和位置均有关系，且伸臂桁架设置方案的最优性并非随着伸臂桁架数目的增加而增加。

［关键词］超高层结构;伸臂桁架;位置;数目;灵敏度向量法

中图分类号：TU973文献标识码：A文章编号：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

*上海市科技攻关计划（09dz1207704），上海市青年科技启明星计划（跟踪）（11QH1402700）。

作者简介：赵昕，博士，高级工程师，Email：22zx@tjadri.com。

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