（天津市建筑设计院， 天津 300074）

［摘要］ 津湾广场9号楼超限高层结构采用钢筋混凝土核心筒-矩形钢管混凝土柱钢框架抗侧力结构体系。结构底部布置钢-混凝土组合巨柱，同时在第8层设置转换桁架，转换桁架与巨柱交汇处的节点区域受力复杂，因此对该节点区域进行受力分析是保证结构安全的关键。采用ABAQUS软件建立巨柱节点区域的有限元模型，基于损伤塑性本构模型，考虑材料非线性，对其进行非线性数值分析。分析结果表明，荷载作用下巨柱节点区域处于弹性状态，局部混凝土损伤发展不明显；巨柱节点区域受力满足抗震性能设计目标的要求。

［关键词］津湾广场; 超限高层结构; 巨柱节点; 转换桁架; 材料非线性

中图分类号：TU973.2文献标识码：A文章编号：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

作者简介：黄兆纬，高级工程师，结构总工程师，Email: lisahzw@sina.com。 

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