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（1 清華大學(xué)土木工程系， 北京  100084； 2 清華大學(xué)建筑設(shè)計(jì)研究院有限公司， 北京  100084；3 中國(guó)能源建設(shè)集團(tuán)廣東省電力設(shè)計(jì)研究院有限公司， 廣州  510663）

［摘要］超高層框架-核心筒結(jié)構(gòu)中廣泛采用腰桁架和伸臂桁架提高結(jié)構(gòu)整體的抗側(cè)剛度。通過(guò)對(duì)腰桁架和伸臂桁架作用機(jī)理的分析，指出了腰桁架和伸臂桁架作用的實(shí)質(zhì)是加強(qiáng)豎向構(gòu)件之間的連接，并使外圍框架柱軸向受力。對(duì)腰桁架和伸臂桁架的最優(yōu)位置進(jìn)行了理論分析和模型計(jì)算，結(jié)果表明，腰桁架和伸臂桁架減小結(jié)構(gòu)變形的最優(yōu)位置在結(jié)構(gòu)的中上部，且二者對(duì)相連構(gòu)件的內(nèi)力有明顯影響。歸納了腰桁架和伸臂桁架的選用原則，指出了設(shè)置腰桁架和伸臂桁架時(shí)需要注意的問(wèn)題。

［關(guān)鍵詞］超高層建筑結(jié)構(gòu)； 框架-核心筒； 腰桁架； 伸臂桁架

中圖分類號(hào)：TU973文獻(xiàn)標(biāo)識(shí)碼：A文章編號(hào)：1002-848X(2019)06-0012-05

Application of belt trusses and outriggers in super high-rise building structures

Liu Kai1, Zhang Chonghou1, Liu Yansheng2, Chen Jiannan3, Li Qingxiang2

(1 Department of Civil Engineering, Tsinghua University, Beijing 100084, China;2 Institute of Architectural Design & Research, Tsinghua University, Beijing 100084, China;3 Guangdong Electric Power Design Institute Co., Ltd., China Energy Engineering Group, Guangzhou 510663, China)

Abstract:Belt trusses and outriggers are wildly used to increase the lateral rigidity of super high-rise frame-corewall structures. Based on the analysis of the action mechanism of belt truss and outrigger, it was pointed out that the essence of the action of belt truss and outrigger is to strengthen the connection between vertical members and to make the outer frame columns axially loaded. The optimal position of the belt truss and the outrigger was analyzed theoretically and calculated by the model. The results show that the optimal position of the belt truss and the outrigger to reduce the structural deformation is in the middle and upper parts of the structure. The belt truss  and outrigger  have a significant influence on the internal forces of the connecting members. The selection principles of belt truss and outrigger were summarized, and the issues needing attention in setting up belt truss and outrigger were pointed out.

Keywords:super high-rise building structure; frame-corewall structure; belt truss; outrigger

作者簡(jiǎn)介：劉凱，碩士研究生，Email：1216503035@qq.com。