| 矩形钢管混凝土树状节点受力分析 |
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| 引用本文： | 刘东,甘正立,赵仕兴,李正良.矩形钢管混凝土树状节点受力分析[J].重庆大学学报(自然科学版),2009,32(1):50-54. |
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| 作者姓名： | 刘东 甘正立 赵仕兴 李正良 |
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| 作者单位： | 刘东,甘正立,李正良,LIU Dong,GAN Zheng-li,LI Zheng-liang(重庆大学,土木工程学院,重庆,400030);赵仕兴,ZHAO Shi-xing(四川省建筑设计研究院,成都,610017)
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| 基金项目： | 国家重点基础研究发展规划(973计划) |
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| 摘 要： | 钢管混凝土树状节点是由钢管混凝土Y形柱与双十字形梁柱节点组合而成的复杂节点.采用ANSYS对该类节点进行非线性有限元计算分析.计算模型考虑材料,几何和接触非线性.粱端荷栽位移曲线以及滞回曲线与试验吻合较好,并能准确模拟出节点的破坏形态.分析有限元计算结果表明:梁端加劲肋使拉压应力能有效传递到内隔板,中间孔洞的存在对内隔板的传力影响较小,反复荷载作用下节点核心区混凝土对角区受压,对梁端压应力的传递有较大贡献.
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| 关 键 词： | 钢管混凝土 树状节点 Y形柱 非线性有限元分析 滞回环 |
Behavior of dendriform connections of concretefilled steel rectangular tubes |
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| LIU Dong,GAN Zheng-li,ZHAO Shi-xing,LI Zheng-liang.Behavior of dendriform connections of concretefilled steel rectangular tubes[J].Journal of Chongqing University(Natural Science Edition),2009,32(1):50-54. |
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| Authors: | LIU Dong GAN Zheng-li ZHAO Shi-xing LI Zheng-liang |
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| Institution: | 1.College of Civil Engineering;Chongqing University;Chongqing 400030;P.R.China;2.Sichuan Provincial Institute of Architectural Design;Chengdu 610017;P.R.China |
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| Abstract: | Dendriform connections of concrete filled steel rectangular tubes(CFSRT) are composed of a bifurcated column and double-cruciform beam-column connections.A 3-D nonlinear finite element analysis(FEA) which considers all nonlinear effects of materials,geometry and contact interfaces is established.Analysis of the FEA results show that the load-displacement curves at the ends of the beam and hysteretic curves obtained experimentally and via FEA agreed with each other.The stiffener transfers the tension-compres... |
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| Keywords: | concrete filled steel tubes dendriform connection bifurcated column nonlinear finite element analysis hysteresis loop |
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