| CRTSⅠ型板式无砟轨道脱空状态对结构模态的影响 |
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| 作者单位： | ;1.西南交通大学高速铁路线路工程教育部重点实验室 |
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| 摘 要： | 以CRTSⅠ型板式无砟轨道作为研究对象,运用有限元软件ANSYS,建立有限元梁体模型,对轨道板不同脱空长度的轨道结构进行模态分析,为轨道结构的损伤识别提供理论指导。计算结果表明:随着轨道板脱空长度的增加,轨道结构的同阶固有频率减小;振型的波峰逐渐向脱空区域移动,在脱空区域轨道板的垂向位移增大,轨道板与凸台分离明显。
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| 关 键 词： | 板式轨道 CA砂浆 脱空 模态分析 有限元 |
The Influence of CRTSⅠSlab Track Disengaging on Structural Modal |
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| Institution: | ,MOE Key Laboratory of High-speed Railway Engineering,Southwest Jiaotong University |
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| Abstract: | CRTSⅠSlab Track is selected as the research object. A finite element beam-solid model is established with software ANSYS to analyze the modal of track structure with different disengaging lengths of slab track and provide theoretical guidance for identifying track damages. The results show that with the increase of disengaging length of slab track,the natural frequency of the track structure decreases;the peak of mode shape is moved gradually to the void region,the vertical displacement of the slab track is increasing,and the slab track and cam basement are obviously separated in void region. |
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| Keywords: | Slab track CA mortar Disengaging Modal analysis Finite element |
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