| 轨道结构参数对地铁引起地面环境振动特性的影响分析 |
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| 引用本文： | 肖桂元,韦红亮,杨圣春,王志驹.轨道结构参数对地铁引起地面环境振动特性的影响分析[J].桂林工学院学报,2014(2):272-277. |
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| 作者姓名： | 肖桂元 韦红亮 杨圣春 王志驹 |
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| 作者单位： | [1]桂林理工大学 广西矿冶与环境工程重点实验室,广西桂林 541004 [2]广西岩土力学与工程重点实验室,广西桂林541004 [3]内蒙古科技大学建筑与土木工程学院,内蒙古包头014010 [4]广西壮族自治区交通运输厅,南宁530012 |
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| 基金项目： | 国家自然科学基金项目（51108110;51369010;41262011;41102202）;广西岩土力学与工程重点实验室项目（11-CX-01;11-KF-02）;广西矿冶与环境科学实验中心项目（KH2013ZD006） |
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| 摘 要： | 分别采用有限元和现场试验方法,研究了在短波不平顺条件下,轨道结构参数变化对地铁列车引起地面环境振动特性的影响。结果表明:地铁列车引起的地面环境振动总体上由波长为0.3~1.0 m的短波不平顺所引起,减小扣件刚度和增大轨枕质量可以分别在50~100 Hz和30~100 Hz范围内减小地面振动水平,减小道床支承刚度可在20~100 Hz范围内有效减小地面环境振动水平约13.5 dB,但会导致地面环境振动水平在某些频率上出现增大。
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| 关 键 词： | 地下列车 轨道结构 地面振动 现场试验 数值计算 |
Effect of track parameters on ground-vibration characteristics induced by metro-train |
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| XIAO Gui-yuan,WEI Hong-liang,YANG Sheng-chun,WANG Zhi-ju.Effect of track parameters on ground-vibration characteristics induced by metro-train[J].Journal of Guilin University of Technology,2014(2):272-277. |
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| Authors: | XIAO Gui-yuan WEI Hong-liang YANG Sheng-chun WANG Zhi-ju |
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| Affiliation: | 1. a. Guangxi Scientific Experiment Center of Mining, Metallurgy And Environment ; b. Guangxi Key laboratory of Geomechnics and Geoteehnical Engineering, Guilin University of Technology, Guilin 541004, China; 2. School of Architecture and Civil Engineering, Inner Mongolia University of Science and Technology, Baotou 014010, China; 3. Communication Depatment of Guangxi Zhuang Awtonomous Region, Nanning 530012, China) |
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| Abstract: | The effect of track parameters on ground-vibration characteristics induced by metro-train in the condition of rail roughness was studied by FEM and on-site experiments.The results show that the ground vibration from metro train mainly is caused by roughness with wavelength of 0.3 -1.0 m.The decreasing fastener stiffness and increasing the mass of sleeper can reduce the ground vibration level in the range of 50-100 Hz and 30-100 Hz respectively.The decreasing supporting stiffness of slab can effectively reduce the ground vibration level in the range of 20-100 Hz with about 13.5 dB,but will cause ground-vibration increase in certain frequency. |
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| Keywords: | metro-train railway track ground environment vibration characteristics numeric analysis field test |
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