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（華南理工大學(xué)建筑設(shè)計(jì)研究院， 廣州 510640）
［摘要］海南移動(dòng)指揮調(diào)度中心一期工程高層塔樓部分為四角漸變過渡的造型獨(dú)特的高層建筑，其高寬比較大，且其角柱與常規(guī)意義上的角柱有很大的區(qū)別。為了抵御該地區(qū)高烈度地震及高風(fēng)壓的作用，設(shè)計(jì)提出了鋼框架+鋼支撐+鋼筋混凝土核心筒的混合結(jié)構(gòu)體系，其中柱采用了圓鋼管混凝土的構(gòu)件形式。通過角部的漸變斜柱以及鋼支撐，對結(jié)構(gòu)的側(cè)向剛度較弱的短邊方向（Y向）進(jìn)行了剛度補(bǔ)償。此外，提出了基于位移等效準(zhǔn)則的關(guān)于節(jié)點(diǎn)性能的精細(xì)化分析方法，并用該方法對通過長牛腿支托的交叉鋼管混凝土節(jié)點(diǎn)的力學(xué)性能進(jìn)行了分析，保證了結(jié)構(gòu)在整體意義上的安全可靠。結(jié)果表明，該結(jié)構(gòu)形式及節(jié)點(diǎn)構(gòu)造能夠滿足安全性的要求，主要節(jié)點(diǎn)性能化分析的微觀結(jié)果也與整體計(jì)算的宏觀結(jié)果相匹配。
［關(guān)鍵詞］混合結(jié)構(gòu)；位移等效準(zhǔn)則；節(jié)點(diǎn)精細(xì)化計(jì)算；性能化分析
中圖分類號(hào)：TU398+.9文獻(xiàn)標(biāo)識(shí)碼：A文章編號(hào)：1002-848X(2021)03-0005-06
Performance analysis on structure and joints of a complex high-rise mixed structure
SUN Wenbo, ZHOU Weijian, XIAN Jiahao
(Architect Design and Research Institute, South China University of Technology, Guangzhou 510640， China)
Abstract:The first phase tower of China-Mobile (Hainan) mansion is a unique high-rise building with four spiral gradient corners and a great aspect ratio. The corner columns of the tower are different from ordinary ones. To resist the regional high seismic intensity and high wind pressure, a mixed system composed of steel frame and braces, RC tube was proposed in design. All columns were made of concrete filled circular steel tube. Due to its weak lateral stiffness in the short side direction (direction Y ) , the structure was strengthened by steel brace and inclined columns. In addition, based on the displacement equivalent criterion, a refined method was proposed for joint performance analysis. This method was used to analyze the mechanical performance of the cross concrete-filled steel tube joints supported by long corbels, so as to ensure the overall safety and reliability of structure. The results show that the structural system and connection can meet the safety requirements, and the microscopic results of the performance analysis of the main connections are consistent with the macroscopic results of the overall calculation.
Keywords:mixed structure;displacement equivalent criterion;refine joint calculation;performance analysis
作者簡介：孫文波，博士，教授級(jí)高級(jí)工程師，Email:sunwenbo@scut.edu.cn。
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