| 节点刚度对鞍型网壳稳定性的影响 |
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| 引用本文： | 康菊,赵金城,宋振森. 节点刚度对鞍型网壳稳定性的影响[J]. 低温建筑技术, 2005, 0(6): 47-49 |
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| 作者姓名： | 康菊 赵金城 宋振森 |
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| 作者单位： | 1. 宁夏大学土木与水利工程学院,银川,750021
2. 上海交通大学土木工程系,上海,200240 |
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| 摘 要： | 节点刚度是影响网壳稳定性的重要因素之一,为理解其影响规律,应用Ansys的M atrix27单元建立节点刚度单元模型,并考虑初始缺陷的影响,运用非线性有限元全过程分析方法,研究了节点刚度变化对不同缺陷双曲抛物面鞍型网壳稳定性的影响。结果表明:刚度降低,网壳稳定承载力下降;缺陷增大,节点刚度的影响减弱,并给出了一些工程设计的建议。
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| 关 键 词： | 节点刚度 半刚性 缺陷 双曲抛物面 |
| 文章编号： | 1001-6864（2005）06-0047-03 |
| 收稿时间： | 2005-06-06 |
| 修稿时间： | 2005-06-06 |
THE INFLUENCE OF JOINT STIFFNESS ON THE STABILITY OF HYPERBOLIC PARABOLOID RETICULATED SHELLS WITH INITIAL IMPERFECTION |
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| KANG Ju,ZHAO Jin-cheng,SONG Zhen-sen. THE INFLUENCE OF JOINT STIFFNESS ON THE STABILITY OF HYPERBOLIC PARABOLOID RETICULATED SHELLS WITH INITIAL IMPERFECTION[J]. Low Temperature Architecture Technology, 2005, 0(6): 47-49 |
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| Authors: | KANG Ju ZHAO Jin-cheng SONG Zhen-sen |
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| Affiliation: | 1. School of Civil and Water Conservancy Engineering, Ningxia University, Yinehuan 750021, China; 2. School of Civil Engineering, Shanghai Jiao Tong University, Shanghai 200240, China |
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| Abstract: | The stiffness of joints is one of the most important factors that affect the stability of reticulated shells.Taking the initial imperfection into account,the finite element model of joints stiffness is presented using finite element program,Ansys and then a numerical analysis is performed on the influence of joint stiffness on the stability of hyperbolic paraboloid reticulated shells through the geometrically nonlinear finite element method.Analysis indicated that joint stiffness affect the load capacity behavior of shells with the change of initial imperfection and some suggestions are made for structural design. |
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| Keywords: | joint stiffness semi-rigid imperfection hyperbolic paraboloid |
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