|Table of Contents|

Ground vibration characteristic of embankment section for fast railway(PDF)

《交通运输工程学报》[ISSN:1671-1637/CN:61-1369/U]

Issue:
2014年03期
Page:
8-14
Research Field:
道路与铁道工程
Publishing date:

Info

Title:
Ground vibration characteristic of embankment section for fast railway
Author(s):
ZHANG Guang-ming;  HE Yu-long;  YANG Li-zhong;  SU Kai
School of Geosciences and Environmental Engineering, Southwest Jiaotong University, Chengdu 610031, Sichuan, China
Keywords:
subgrade engineering;  ground vibration;  frequency-division section;  vibration level;  prediction method
PACS:
U213.11
DOI:
-
Abstract:
The ground vibration induced by trains running on the embankment of Chengguan Fast Railway was measured through field test. The maximum vibration levels, equivalent vibration levels and vibration frequencies in various locations induced by trains running from inside and outside tracks were analyzed. The orrelation of decy speed and vibration frequency was studied, a new frequency-division section prediction method based on Bornitz model for railway embankment ground vibration wasbuilt and verified. Analysis result indicates that the levels of the maximum vibration is 51-77 dB in the distance away from embankment 5-75 m, which meets the requirement of current railway environmental vibration standard. The environmental vibration induced by train running on inside track is greater than that on outside track. The ground vibration attenuates quickly in the region less than 35 m away from embankment, and the attenuate rate of ground vibration become slower in the region more than 35 m away from embankment. High frequency vibration is the major vibration phenomenon within the scope of nearby embankment. In the site of 5 m away from embankment, the dominate vibration frequency range is from 16 Hz to 100 Hz. The low frequency vibration less than 4 Hz is the main vibration phenomenon in the region of more than 65 m away from embankment. The phenomenon of vibration rebound mainly occurs in the frequency range of less than 20 Hz or greater than 100 Hz. The prediction method has good prediction accuracy. 3 tabs, 6 figs, 25 refs.

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Last Update: 2014-06-30