| 空间网架结构钢管混凝土柱节点力学性能足尺试验及分析 |
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| 引用本文： | 李明方,蔡元奇,卢云祥,娄泽方. 空间网架结构钢管混凝土柱节点力学性能足尺试验及分析[J]. 土木建筑与环境工程, 2013, 35(6): 73-81 |
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| 作者姓名： | 李明方 蔡元奇 卢云祥 娄泽方 |
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| 作者单位： | 武汉科技大学 理学院, 武汉 430065;武汉大学 土木建筑工程学院，武汉 430072;贵州省建筑科学研究检测中心，贵阳 550006;中信建筑设计研究总院有限公司, 武汉 430014 |
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| 基金项目： | 中央高校基本科研业务费专项资金(201121002020004)；湖北省交通厅基金项目(2012857216) |
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| 摘 要： | 采用足尺试验与数值仿真相结合的方法研究空间网架结构中的钢管混凝土柱节点的受力及抗震性能。试验荷载逐级加载到设计荷载的1.6倍并观测柱节点的变形与应力。试验结果表明试验荷载下柱节点钢结构部分基本处于弹性状态，混凝土极小部分区域超出压应力极限，钢管与混凝土粘接良好。非线性有限元分析结果揭示了柱节点在低周往复荷载作用下的滞回耗能能力和破坏特征，指出了柱节点承载的薄弱位置，给出了柱节点的极限承载力。结果表明，足尺试验与数值计算相结合的方法可以全面揭示柱节点的受力特性及抗震性能。
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| 关 键 词： | 钢管混凝土柱节点；足尺试验；非线性有限元；极限承载力；滞回耗能能力 |
Full-Scale Test and Analysis of Mechanical Behavior of Concrete Filled Steel Tubular Column Node in Space Truss Structure |
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| Li Mingfang,Cai Yuanqi,Lu Yunxiang and Lou Zefang. Full-Scale Test and Analysis of Mechanical Behavior of Concrete Filled Steel Tubular Column Node in Space Truss Structure[J]. Journal of Civil,Architectrual & Environment Engineering, 2013, 35(6): 73-81 |
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| Authors: | Li Mingfang Cai Yuanqi Lu Yunxiang Lou Zefang |
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| Affiliation: | College of Science, Wuhan University of Science and Technology, Wuhan 430065, P.R.China;School of Civil Engineering, Wuhan University, Wuhan 430072, P.R.China;Construction Scientific Research Testing Center of Guizhou Province, Guiyang 550006, P.R.China;CITIC General Institute of Architectural Design and Research Co., Ltd, Wuhan 430014, P.R.China |
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| Abstract: | To investigate mechanical behavior and seismic behavior of concrete filled steel tubular column node (CFSTCN) in space truss structure, both full-scale test and Finite Element Method (FEM) were employed. The test load was 1.6 times of design load and by incremental step loading. Meanwhile, stress and deformation in CFSTCN were observed to monitor bearing capacity of the node. The results show that steel tubular works in elastic state and a small part of concrete beyond of compressive stress limits; steel tube and concrete adhesive well. The hysteretic energy dissipation capacity and failure mode under cyclic loading were revealed by nonlinear FEM. weakest position and ultimate bearing capacity of the node were obtained from FEM results. The method of combining full-scale test and FEM can well reveal the mechanical behavior and the seismic behavior of the node. |
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| Keywords: | concrete filled steel tubular column node full-scale test nonlinear finite element method ultimate bearing capacity hysteretic energy dissipation capacity |
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