中国铁道科学2018，Vol.39Issue(2)：44-51,8.DOI:10.3969/j.issn.1001-4632.2018.02.06
空沟对列车运行产生的环境振动隔振效果研究
Study on Vibration Isolation Effect of Open Trench on Environmental Vibration Induced by Train Operation
摘要
Abstract
On the basis of analyzing the reflection and transmission of Rayleigh wave at the corner of open trench bottom and the propagation of Rayleigh wave along the surface of open trenches,the relationship between the attenuation law of Rayleigh wave and the parameters of open trench was obtained.Then the calculation formula for the vibration response of soil at any point outside open trench was derived.The formula and simulation analysis were used to study the influence of open trench on the environmental vibration induced by train operation.Results show that the vibration isolation effect of open trench is more obvious with the increase of the depth of open trench.The vibration isolation effect of open trench on high frequency (11～40 Hz) vibration is more obvious than that of low frequency (1～10 Hz) vibration.The vibration isolation effect of open trench is related to the Rayleigh wavelength.When the depth of open trench is greater than the Rayleigh wavelength,the vibration isolation effect is better.The vibration isolation effect on the environmental vibration caused by the train is not obvious with the change of such parameters as the width of open trench and the distance from the open trench to vibration source.Calculated results basically agree well with numerical analysis results,and the correctness of the derived formula is verified.关键词
环境振动/空沟/隔振/列车运行/瑞利波Key words
Environmental vibration/Open trench/Vibration isolation/Train operation/Rayleigh wave分类
交通工程引用本文复制引用
姚锦宝,夏禾,胡敬梁..空沟对列车运行产生的环境振动隔振效果研究[J].中国铁道科学,2018,39(2):44-51,8.基金项目
国家“九七三”计划项目(2013CB036203) （2013CB036203）
国家自然科学基金重点资助项目(50538010) （50538010）
