| 考虑剪切变形及转动惯量的H型钢梁自由振动 |
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| 引用本文： | 李静斌,陈淮,葛素娟.考虑剪切变形及转动惯量的H型钢梁自由振动[J].铁道科学与工程学报,2012(2):29-33. |
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| 作者姓名： | 李静斌 陈淮 葛素娟 |
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| 作者单位： | 郑州大学土木工程学院 |
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| 基金项目： | 河南省高等学校青年骨干教师资助计划项目 |
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| 摘 要： | 以3种典型热轧H型钢截面简支梁为研究对象,分别采用初等梁理论模型和考虑剪切变形及转动惯量影响的高等梁理论模型,分析在不同长细比情况下H型钢截面简支梁前3阶自由振动频率的差异,得出了初等梁理论进行H型钢梁自由振动分析的适用条件,该结论可供结构动力分析及动力设计参考。
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| 关 键 词： | H型钢梁 自由振动频率 剪切变形 转动惯量 长细比 |
Free vibration of H-shape steel beam considering shear deformation and rotational inertia |
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| LI Jing-bin,CHEN huai,GE Su-juan.Free vibration of H-shape steel beam considering shear deformation and rotational inertia[J].Journal of Railway Science and Engineering,2012(2):29-33. |
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| Authors: | LI Jing-bin CHEN huai GE Su-juan |
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| Institution: | (School of Civil Engineering,Zhengzhou University,Zhengzhou 450001,China) |
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| Abstract: | With three kinds of typical hot-rolled H-shape steel section free beam as research objective,the difference of former third-order free vibration frequency with different slenderness ratio was analyzed by elementary beam theory model and higher beam theory model which considering the shearing deformation and the inertia effect.The applicable conditions of free vibration analysis by the elementary beam theory on H-shape steel beam is obtained.This conclusion provids reference for dynamic analysis and the dynamic design. |
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| Keywords: | H-shape steel beam free vibration frequency shear deformation rotational inertia slenderness ratio |
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