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（中國(guó)建筑西南設(shè)計(jì)研究院有限公司， 成都 610042）

［摘要］通過7度區(qū)建筑高度198-1m、連接體跨度約33-9m的門形雙塔連體結(jié)構(gòu)——成都環(huán)球金融中心的設(shè)計(jì)實(shí)例，分析比較了斜向?qū)ΨQ布置雙塔樓連體結(jié)構(gòu)的扭轉(zhuǎn)位移比、剛重比等計(jì)算參數(shù)的控制及其與單塔結(jié)構(gòu)的差別；分析比較了水平地震作用方向?qū)λ呛瓦B接體結(jié)構(gòu)內(nèi)力的不同影響；討論了豎向地震作用計(jì)算結(jié)果及其對(duì)連接體的設(shè)計(jì)影響；對(duì)連接體桁架有效傳力路徑、連體結(jié)構(gòu)抗連續(xù)倒塌能力進(jìn)行了驗(yàn)證分析和討論。經(jīng)分析發(fā)現(xiàn)，在結(jié)構(gòu)設(shè)計(jì)時(shí)，連體結(jié)構(gòu)連體層及其附近樓層的設(shè)計(jì)參數(shù)控制是設(shè)計(jì)的關(guān)鍵，連體層及其附近的樓板需進(jìn)行加強(qiáng)，連體結(jié)構(gòu)的豎向地震作用及地震作用方向要重點(diǎn)分析。分析結(jié)果表明，結(jié)構(gòu)各設(shè)計(jì)參數(shù)均符合規(guī)范要求，結(jié)構(gòu)整體穩(wěn)定性較好，并滿足抗連續(xù)倒塌設(shè)計(jì)要求，結(jié)構(gòu)體系合理可靠。

［關(guān)鍵詞］成都環(huán)球金融中心； 超高層； 大跨度； 門形； 連體結(jié)構(gòu)

中圖分類號(hào)：TU318， TU973-2文獻(xiàn)標(biāo)識(shí)碼：A文章編號(hào)：1002-848X(2019)07-0009-06

Analysis and research of a large-span portal double-tower connected high-rise structure

Wu Xiaobin， Peng Zhizhen， Xia Yu

(China Southwest Architectural Design and Research Institute Co., Ltd., Chengdu 610042, China)

Abstract:The design of Chengdu Global Financial Center, a portal double-tower connected structure with a height of 199-8m and a spatial corridor span of about 33-9m in 7-degree zone was described. The control of calculation parameters such as rotational displacement ratio and rigid-gravity ratio of inclined symmetrical double-tower connected structure and their differences from single-tower structure were analyzed and compared. The influence of horizontal seismic action direction on the internal force of the tower and the spatial corridor was analyzed and compared. The calculation results of vertical seismic action and the influence on the design of spatial corridor were discussed. The effective load transfer path of truss in spatial corridor and the capacity to resist progressive collapse of connected structure was also verified, analyzed and discussed. Through analysis, it is found that the control of the design parameters of the connected stories and their adjacent stories is the key to the design of connected structure; the floors of the connected stories and their adjacent floors should be strengthened; the vertical seismic action and the direction of seismic action of the connected structure should be emphatically analyzed. The analysis results show that all the design parameters of the structure meet the requirements of the code; the overall stability of the structure is good; the design requirement of progressive collapse resistance is satisfied; and the structural system is reasonable and reliable.

Keywords:Chengdu Global Financial Center; super high-rise; large-span; portal; connected structure

作者簡(jiǎn)介：吳小賓，碩士，教授級(jí)高級(jí)工程師，Email: wumat@vip.sina.com。