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（天津市建筑設(shè)計(jì)院， 天津 300074）

［摘要］ 津?yàn)硰V場(chǎng)9號(hào)樓超限高層結(jié)構(gòu)采用鋼筋混凝土核心筒-矩形鋼管混凝土柱鋼框架抗側(cè)力結(jié)構(gòu)體系。結(jié)構(gòu)底部布置鋼-混凝土組合巨柱，同時(shí)在第8層設(shè)置轉(zhuǎn)換桁架，轉(zhuǎn)換桁架與巨柱交匯處的節(jié)點(diǎn)區(qū)域受力復(fù)雜，因此對(duì)該節(jié)點(diǎn)區(qū)域進(jìn)行受力分析是保證結(jié)構(gòu)安全的關(guān)鍵。采用ABAQUS軟件建立巨柱節(jié)點(diǎn)區(qū)域的有限元模型，基于損傷塑性本構(gòu)模型，考慮材料非線性，對(duì)其進(jìn)行非線性數(shù)值分析。分析結(jié)果表明，荷載作用下巨柱節(jié)點(diǎn)區(qū)域處于彈性狀態(tài)，局部混凝土損傷發(fā)展不明顯；巨柱節(jié)點(diǎn)區(qū)域受力滿足抗震性能設(shè)計(jì)目標(biāo)的要求。

［關(guān)鍵詞］津?yàn)硰V場(chǎng); 超限高層結(jié)構(gòu); 巨柱節(jié)點(diǎn); 轉(zhuǎn)換桁架; 材料非線性

中圖分類號(hào)：TU973.2文獻(xiàn)標(biāo)識(shí)碼：A文章編號(hào)：1002-848X(2014)02-0048-05

Nonlinear analysis of huge column joint region of out-of-code high-rise No.9 building in Jinwan Square

Huang Zhaowei, Huang Xin, Hu Xueying, Cai Haoliang, Qi Lin, Liu Tao, Zhu Xudong

(Tianjin Architecture Design Institute, Tianjin 300074, China) 

Abstract: Structural system of reinforced concrete corewall and concrete-filled steel rectangular tube frame were adopted for out-of-code high-rise No.9 building in Jinwan Square. Steel-concrete huge columns were set at the structure bottom and transfer truss was arranged on the 8th floor. Stress state of huge column joint region in intersection parts of huge column and transfer truss are complex and joint region stress analysis is the key to guarantee the safety of the structure. Numerical analysis model of huge column joint region was established using ABAQUS software based on damage plastic model and considering material nonlinear. Nonlinear analysis results indicate that huge column joint region is in elastic state and damage development of concrete is not obvious. Huge column joint region meets requirements of performance-based seismic design.

Keywords:Jinwan Square; out-of-code high-rise structure; huge column joint region; transfer truss; material nonlinear

作者簡(jiǎn)介：黃兆緯，高級(jí)工程師，結(jié)構(gòu)總工程師，Email: lisahzw@sina.com。 

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