| 基于刚度的构件重要性评估及其与冗余度的关系 |
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| 引用本文： | 柳承茂,刘西拉. 基于刚度的构件重要性评估及其与冗余度的关系[J]. 上海交通大学学报, 2005, 39(5): 746-750 |
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| 作者姓名： | 柳承茂 刘西拉 |
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| 作者单位： | 清华大学,土木工程系,北京,100084;上海交通大学,土木工程系,上海,200030 |
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| 基金项目： | 国家重点基础研究发展规划(973)项目(2002CB412709)，清华大学基础研究项目(JC2002004) |
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| 摘 要： | 提出了基于刚度的结构构件重要性的评估方法，并通过最小势能原理对构件重要性与结构冗余度之间存在的关系进行了证明．两个算例说明了该方法在平面桁架和刚架体系中的应用．理论推导和算例表明，所给出的方法能够有效地反映结构中存在的薄弱环节，可以为结构设计和维护提供必要的理论依据．
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| 关 键 词： | 结构可靠性 结构安全度 构件重要性 冗余度 易损性 |
| 文章编号： | 1006-2467(2005)05-0746-05 |
| 修稿时间： | 2004-04-29 |
Stiffness-Based Evaluation of Component Importance and Its Relationship with Redundancy |
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| LIU Cheng-mao,LIU Xi-la. Stiffness-Based Evaluation of Component Importance and Its Relationship with Redundancy[J]. Journal of Shanghai Jiaotong University, 2005, 39(5): 746-750 |
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| Authors: | LIU Cheng-mao LIU Xi-la |
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| Affiliation: | LIU Cheng-mao~1,LIU Xi-la~2 |
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| Abstract: | A method based on component stiffness was provided to calculate the importance indices of structural components and also the relationship between importance indices and structural redundancy was given, which is proved by the theory of minimum of potential energy. Two practical examples are given for illustrating. It is shown that the method can explore the weak parts in a structure and offer necessary theoretical foundation for the structural primary design and maintenance. |
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| Keywords: | structural reliability structure safety component importance redundancy vulnerability |
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