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Field experiment of subgrade
vibration induced by passing train in a seasonally frozen region of
Daqing
Ling Xianzhang1,2 , Zhang Feng1,2 , Zhu
Zhanyuan 1,2,3 , Ding Lin 4 and Hu Qingli
1
1. School of Civil Engineering, Harbin Institute of Technology,
Harbin 150090, China
2. Institute of Subgrade and Prevention Engineering, Harbin Institute of
Technology, Harbin 150090, China
3. Information & Engineering Technology College, Sichuan Agricultural
University, YaˇŻan 625014, China
4. School of Architectural Engineering, Heilongjiang University, Harbin
150080, China
Abstract: The vibration characteristics and attenuation of the
subgrade caused by passing trains in a seasonally frozen region of
Daqing, China are investigated. Three field experiments were conducted
during different times through the year, in normal, freezing and thawing
periods, respectively, and the influence of the season, train speed and
train type, is described
in this paper. The results show that: (1) the vertical component is the
greatest among the three components of the measured vibration near the
rail track, and as the distance to the railway track increases, the
dominant vibration depends on the season. (2) Compared with the
vibration in the normal period, the vertical and longitudinal vibrations
increase while the lateral vibration decreases in the freezing period.
However, in the thawing period, the vertical and longitudinal vibrations
decrease, and the lateral vibration increases. (3) As train speeds
increase, the subgrade vibration increases. (4) The vibration induced by
a freight train is greater than by a passenger train. These observations
provide a better understanding of the vibration and
dynamic stability of the subgrade and may be useful in developing
criteria for railway and building construction in cold regions.
Keywords: subgrade vibration; passing train; characteristic
acceleration; seasonally frozen regions; Daqing area of
China
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