| 高速铁路空沟隔振数值分析 |
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| 引用本文： | 肖世伟,雷长顺,郭超,闫澍旺. 高速铁路空沟隔振数值分析[J]. 铁道工程学报, 2011, 0(8) |
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| 作者姓名： | 肖世伟 雷长顺 郭超 闫澍旺 |
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| 作者单位： | 1. 铁道第三勘察设计院集团有限公司,天津,300152
2. 天津大学,天津,300072 |
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| 摘 要： | 研究目的:随着高速铁路在我国大量建设,其诱发的环境振动问题变得日益突出,空沟因其施工方便且隔振效果相对较好而在实际工程中得到较多应用,本文采用数值分析研究空沟的深度、宽度及荷载的频率对隔振效果的影响.研究结论:使用无限元和黏弹性边界模拟半无限空间能取得较好的计算结果,计算结果表明空沟的深度在1.0～4.0m时对隔振效果影响显著,宽度对隔振效果影响不大,空沟对近场隔振优于远场隔振.幅值一定,高频荷载作用下空沟具有更好的隔振作用,低频荷载作用下较深的沟深才能达到理想的隔振效果.
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| 关 键 词： | 高速铁路 空沟 隔振 无限元 黏弹性 |
Numerical Analysis of Vibration Reduction of Open Trench for High - speed Railway |
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| XIAO Shi-wei,LEI Chang-shun,GUO Chao,YAN Shu-wang. Numerical Analysis of Vibration Reduction of Open Trench for High - speed Railway[J]. Journal of Railway Engineering Society, 2011, 0(8) |
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| Authors: | XIAO Shi-wei LEI Chang-shun GUO Chao YAN Shu-wang |
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| Affiliation: | XIAO Shi-wei1,LEI Chang-shun1,GUO Chao1,YAN Shu-wang2(1.The Third Railway Survey & Design Institute Group Corporation,Tianjin 300152,China,2.Tianjin University,Tianjin 300072,China) |
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| Abstract: | Research purposes: With a large number of high-speed railways constructed in China,the environmental vibration induced by high-speed railway becomes prominent increasingly.The open trench has been widely used for the railway construction because of its easy construction and the relatively good isolation effects.In this paper,the numerical analysis is made to analyze the influence of the open trench's depth and width as well as the load frequency on the isolation effect. Research conclusions:The infinite ele... |
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| Keywords: | high-speed railway open trench isolation infinite element viscoelasticity |
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