| 桁架桥空间自振特性分析 |
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| 引用本文： | 沈锐利,李富文.桁架桥空间自振特性分析[J].西南交通大学学报,1989(4). |
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| 作者姓名： | 沈锐利 李富文 |
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| 摘 要： | 本文用杆系结构动力有限元法分析了我国定型设计中具有斜桥门架的三座铁路简支桁架桥的空间自振特性,并在分析计算结果的基础上就自振频率的近似计算及用有限元法分析时计算模型的选取等问题作了讨论。
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| 关 键 词： | 桁架桥 有限元 自振频率 振型 |
Free Vibration Analysis of Truss Bridges as Three-dimensional Struetures |
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| Shen Ruili,Li Fuwen.Free Vibration Analysis of Truss Bridges as Three-dimensional Struetures[J].Journal of Southwest Jiaotong University,1989(4). |
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| Authors: | Shen Ruili Li Fuwen |
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| Institution: | Shen Ruili;Li Fuwen |
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| Abstract: | The paper analyses the free vibration characteristics of three typical simply supported railway truss bridges as space-frame structures by finite element method. In this paper the approximate formulas for computing the natural frequencies of these bridges are presented and the corresponding mode shapes are discussed. |
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| Keywords: | truss bridges finite element method natural frequencies mode shapes |
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