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楊育臣， 張燕平， 沈莉， 李國(guó)強(qiáng)， 甘明， 陳一， 周忠發(fā)

（北京市建筑設(shè)計(jì)研究院有限公司， 北京 100045）

 

［摘要］長(zhǎng)懸挑結(jié)構(gòu)的豎向地震反應(yīng)及防連續(xù)倒塌設(shè)計(jì)必須引起工程技術(shù)人員的重視。華能集團(tuán)人才創(chuàng)新創(chuàng)業(yè)基地辦公樓，由于建筑的獨(dú)特造型，層4及層14設(shè)懸挑鋼桁架，最大懸挑長(zhǎng)度達(dá)到18m，標(biāo)準(zhǔn)層在層7，10，13分別設(shè)置一層球形辦公室，采用桁架懸掛在最東側(cè)鋼管混凝土柱-鋼支承筒外，最大懸挑長(zhǎng)度達(dá)到12.4m。采用豎向地震波對(duì)懸挑結(jié)構(gòu)進(jìn)行了時(shí)程分析，通過(guò)對(duì)比懸挑結(jié)構(gòu)的加速度，給出了豎向加速度放大系數(shù)。對(duì)懸挑結(jié)構(gòu)的幾榀關(guān)鍵桁架進(jìn)行了防倒塌分析, 以保證結(jié)構(gòu)設(shè)計(jì)是安全的。

［關(guān)鍵詞］懸挑結(jié)構(gòu)； 豎向地震； 豎向加速度； 球形辦公室； 防連續(xù)倒塌

中圖分類(lèi)號(hào)：TU391.4；TU973.13        文獻(xiàn)標(biāo)識(shí)碼：A        文章編號(hào)：1002-848X(2013)17-0101-04

 

Yang Yuchen, Zhang Yanping, Shen Li, Li Guoqiang, Gan Ming, Chen Yi, Zhou Zhongfa

(Beijing Institute of Architectural Design, Beijing 100045, China)

 

Abstract: The problems of vertical seismic action and preventing structural progressive collapse must draw the attention of engineers in the design process of long cantilever structure. Due to the unique shape, the cantilever steel trusses are set up in the fourth and fourteenth layers of office building for China Hua Neng Group(CHNG) Talent Innovation and Entrepreneurship Campus. The maximum cantilever length can reach to 18m.The staggered spherical offices are set in the seventh, tenth and thirteenth standard layers. The spherical offices are hanging in the outside of the steel brace tube using the trusses. The maximum cantilever length of the spherical offices can reach to 12.4m. Time history analysis of the cantilever structure was done using the vertical seismic waves. By comparing the acceleration of the cantilever structure, the vertical acceleration amplification factor are obtained. In order to ensure the safety of the structure, the preventing structural progressive collapse analysis was used for critical trusses of the cantilever structure.

Keywords: cantilever structure; vertical earthquake; vertical acceleration; spherical office; preventing progressive collapse

作者簡(jiǎn)介：楊育臣，工程師，Email：yangyuchen1120@126.com。