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（中信建筑設(shè)計研究總院有限公司，武漢 430014）

 [摘要] 長江傳媒大廈主樓建筑高度243m，采用框架—核心筒結(jié)構(gòu)。結(jié)合建筑造型與使用功能要求，結(jié)構(gòu)4層至6層局部采用桁架轉(zhuǎn)換，并在14~17層及26~29層間采用斜柱轉(zhuǎn)換（斜柱與豎向角度為20度）。為研究轉(zhuǎn)換結(jié)構(gòu)中關(guān)鍵節(jié)點(diǎn)的受力性能，選取4層轉(zhuǎn)換桁架節(jié)點(diǎn)、14層邊節(jié)點(diǎn)和角部節(jié)點(diǎn)等三種典型節(jié)點(diǎn)進(jìn)行有限元分析?；?/span>ANSYS軟件建立節(jié)點(diǎn)有限元模型，分析時考慮混凝土和鋼骨材料非線性。在與文獻(xiàn)中模型節(jié)點(diǎn)試驗(yàn)結(jié)果對比驗(yàn)證的基礎(chǔ)上，對轉(zhuǎn)換結(jié)構(gòu)中的三種典型節(jié)點(diǎn)進(jìn)行了有限元分析，重點(diǎn)研究了節(jié)點(diǎn)區(qū)域變形與應(yīng)力分布特性。有限元分析結(jié)果表明，在不利荷載組合作用下，三種典型節(jié)點(diǎn)中鋼骨處于彈性受力狀態(tài)，節(jié)點(diǎn)核心區(qū)混凝土工作性能良好，節(jié)點(diǎn)總體上安全可靠。

[關(guān)鍵詞] 桁架轉(zhuǎn)換；斜柱轉(zhuǎn)換；關(guān)鍵節(jié)點(diǎn)；有限元分析；ANSYS

中圖分類號：TU398+.9            文獻(xiàn)標(biāo)識碼：A          文章編號：

作者簡介：譚園，博士，工程師。Email：yuantan_tj@163.com。（聯(lián)系方式：13618605958；027-82743244）

Finite element analysis on key joints of the main building of Yangtze River Media Mansion

Tan Yuan, Peng Ning, Wen Siqing, Zhang Zhigang, Xiao Haibing, Liu Dong

(CITIC General Institute of Architectural Design and Research Co.,Ltd., Wuhan 430014, China)

Abstract: A frame-core wall structural system is applied in the main building of Yangtze River Media Mansion, which is a super high-rise building with height of 243 meters. According to the requirements of architectural form and function, local truss transfer is used between the fourth to sixth floor, and inclined column transfer is adopted between the 14th to 17th floor and 26th to 29th floor, respectively (Note the angle between inclined column and vertical was 20 degree). Finite element analysis (FEA) on the transfer truss joint in fourth floor, edge joint and corner joint in 14th floor were carried out to investigate the loading performance of key joints in transfer structure. The material nonlinearity of steel and concrete was considered in ANSYS FEA. Based on validation of experimental results involved in the references, the performance of deformation and stress distribution in three typical joints were studied. FEA results indicated that steel remained in elastic and concrete of joint core area was in good condition under the unfavorable load combination. The joints were safe and reliable in general.

Keywords: truss transfer; inclined column transfer; key joint; finite element analysis; ANSYS

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