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| 无砟轨动车组运行激励场地振动谱分析 | |
| 引用本文： | 葛勇,张希黔,严春风,詹永祥.无砟轨动车组运行激励场地振动谱分析[J].地震工程与工程振动,2010,30(1). |
| 作者姓名： | 葛勇 张希黔 严春风 詹永祥 |
| 作者单位： | 1. 重庆大学,土木工程学院,重庆,400045 2. 重庆大学,土木工程学院,重庆,400045;中国建筑第三工程局,湖北,武汉,430070 3. 西南交通大学土木工程学院,四川,成都,610031 |
| 基金项目： | 铁道部科技研究发展计划项目(2005K004-C(G)) |
| 摘 要： | 为研究CRH2动车组在无砟轨道段运行引起的场地加速度振动的频谱特性,本文对我国首条无砟轨道段(渝遂铁路二岩隧道—湾里头隧道段)动车组运行时的场地振动进行了现场实测;对实测竖向振动加速度时程进行1/3倍频谱分析表明:地面竖向振动加速度随着与振源距离的增大而明显衰减,随车速增大场地振动强度增强;应用正交HHT变换,对加速度时程进行了Hilbert谱分析,获得了地面竖向振动加速度的主频为10~120Hz、振动传播高频成分衰减较快等频谱特性;最后,将Hilbert边际谱与傅里叶谱进行了对比分析,得到了两种方法分析振动信号频谱特性表现出的差异性。 |
| 关 键 词： | 无砟轨 场地振动 1/3倍频谱 Hilbert谱 谱分析 |
Spectral analysis of field vibration induced by CRH2 operation in truck on railway without ballast |
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| GE Yong,ZHANG Xiqian.,YAN Chunfeng,ZHAN Yongxiang.Spectral analysis of field vibration induced by CRH2 operation in truck on railway without ballast[J].Earthquake Engineering and Engineering Vibration,2010,30(1). | |
| Authors: | GE Yong ZHANG Xiqian YAN Chunfeng ZHAN Yongxiang |
| Institution: | 1.College of Civil Engineering;Chongqing University;Chongqing 400045;China;2.China Construction Third Engineering Division;Corp.LTD;Wuhan 430070;3.College of Engineering;Southwest Jiaotong University;Chengdu 610031;China |
| Abstract: | In order to study the frequency spectrum characteristics of the field vibration acceleration induced by impetus locomotive CRH2 operation in the truck on railway without ballast,field vibration measurement was performed on the Suining-Chongqing railway without ballast between Er-Yan Tunnel to Wan-Litou Tunnel.Through one third octave spectrum analysis of vibration acceleration time-history data,it can be sure that ground vibration acceleration obviously decreases with the increase of distance to the central... |
| Keywords: | railway without ballast truck field vibration one third octave spectrum Hilbert spectrum spectrum analysis |
| 本文献已被 CNKI 万方数据 等数据库收录！ | |