| 薄壁箱粱桥自由振动的半解析分析 |
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| 引用本文： | 徐杏华,李朝,丛敏,林森.薄壁箱粱桥自由振动的半解析分析[J].建筑技术开发,2012(2):5-9. |
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| 作者姓名： | 徐杏华 李朝 丛敏 林森 |
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| 作者单位： | [1]孝感学院城市建设学院,湖北孝感432000 [2]长春市轨道交通集团有限公司,长春130012 |
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| 摘 要： | 以常微分方程求解器为工具，利用半解析方法对薄壁简支箱梁桥的自由振动进行了分析计算，建立了具有连续分布质量和刚度的三维连续化动力分析模型，也就是将箱梁简化为一个带凸缘的薄壁筒组合体。计算结果表明，分析模型是合理的、可行的，从而为认识此类结构的动力特性提供了一种新的途径和方法。
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| 关 键 词： | 桥梁结构 自由振动 半解析方法 常微分方程求解器 |
SEMI-ANALYTICAL METHOD FOR FREE VIBRATION ANALYSIS OF BRIDGE WITH THIN-WALLED CROSS SECTIONS |
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| Xu Xing-hua Li Zhao Cong Min Lin Sen.SEMI-ANALYTICAL METHOD FOR FREE VIBRATION ANALYSIS OF BRIDGE WITH THIN-WALLED CROSS SECTIONS[J].Building Technique Development,2012(2):5-9. |
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| Authors: | Xu Xing-hua Li Zhao Cong Min Lin Sen |
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| Affiliation: | Xu Xing-hua Li Zhao Cong Min Lin Sen |
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| Abstract: | The free vibration analysis of simple beams with thin-walled cross sections is performed by semi-analytical method based on ODE （ Ordinary Differential Equation ） solver, using a model of continuously distributed masses and stiffness in space dimension. That is, the box girder bridge is simplified equivalently into a three-dimensional model, a thin-walled tubular structure with a flange. The computed results indicate that the model is reasonable and feasible, and a new approach and dynamic analytical method is developed for the insight into dynamic performance of box girder structures. |
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| Keywords: | bridge structure free vibration semi-analytical method ordinary differential equation solver |
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