| 无碴轨动车组运行引起的场地振动试验研究 |
| |
| 引用本文： | 葛勇,张希黔,肖正直,严春风,詹永祥.无碴轨动车组运行引起的场地振动试验研究[J].振动与冲击,2010,29(11):209. |
| |
| 作者姓名： | 葛勇 张希黔 肖正直 严春风 詹永祥 |
| |
| 作者单位： | 1.重庆大学 土木工程学院，重庆市 400045；2.中国建筑第三工程局，湖北 武汉市 430070；3.西南交通大学土木工程学院， 四川 成都 610031 |
| |
| 基金项目： | 重庆市科委自然科学基金计划资助项目 |
| |
| 摘 要： | 为研究场地振动加速度衰减特性,对我国首条无碴轨道试验段—渝遂铁路的CRH2动车组运行的场地振动进行了实测。基于最小二乘法,拟合了场地竖向加速度振级的一阶指数和二次多项式衰减经验公式后分析表明:一阶指数函数衰减模型更符合实际。应用正交经验模式分解法和Hilbert变换对场地竖向振动加速度信号进行频谱分析,得到了振动信号的Hilbert边际谱;对比分析表明:Hilbert边际谱较Fourier谱能更好地反映动车组引起的场地振动信号的频谱特性。
|
| 关 键 词： | 无碴轨道 场地振动 现场实测 1/3倍频程 Hilbert边际谱 |
| 收稿时间： | 2009-7-6 |
| 修稿时间： | 2009-9-29 |
A test of the ground vibrations induced by ballastless truck running |
| |
| GE Yong,ZHANG Xi-qian,XIAO Zheng-zhi,YAN Chun-feng,ZHAN Yong-xiang.A test of the ground vibrations induced by ballastless truck running[J].Journal of Vibration and Shock,2010,29(11):209. |
| |
| Authors: | GE Yong ZHANG Xi-qian XIAO Zheng-zhi YAN Chun-feng ZHAN Yong-xiang |
| |
| Affiliation: | 1. College of Civil Engineering，Chongqing University，Chongqing 400045; 2. China Construction Third Engineering Division. CORP. LTD， Wuhan 430070; 3. Southwest Jiaotong University .Chengdu Sichuan China 610031 |
| |
| Abstract: | In order to study the vertical acceleration decay laws of ground vibration, the field vibration induced by impetus locomotive CRH2 were measured on the SuiYu ballastless truck. Through establishing the empirical formula of vertical acceleration vibration level decay laws on the basis of least-squares criterion , the analysis shows that the first-order exponential function is better than quadratic polynomial function in the fitting the experiment data. Based on the EMD and HHT, Comparative analysis shows that using Hilbert spectrum to study on the vibration is more suitable for than using that of Fourier spectrum |
| |
| Keywords: | Ballastless truck Environmental vibration Field experiments one third octave spectrum Marginal Hilbert spectrum |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
| 点击此处可从《振动与冲击》浏览原始摘要信息 |
|
点击此处可从《振动与冲击》下载全文 |
