Full Text:
<40>
CLC number:
On-line Access: 2025-01-16
Received: 2024-07-16
Revision Accepted: 2024-11-26
Crosschecked: 0000-00-00
Cited: 0
Clicked: 53
Dynamic response of the ground beneath a high-speed railway based on typical upper Shanghai clays involving water table change
| |||||||||||||
Jing HU1, Chengming YE1, Juntao JIANG1, Shujing WU1, David THOMPSON2, Xuecheng BIAN3. Dynamic response of the ground beneath a high-speed railway based on typical upper Shanghai clays involving water table change[J]. Journal of Zhejiang University Science A, 1998, -1(-1): .
@article{title="Dynamic response of the ground beneath a high-speed railway based on typical upper Shanghai clays involving water table change",
author="Jing HU1, Chengming YE1, Juntao JIANG1, Shujing WU1, David THOMPSON2, Xuecheng BIAN3",
journal="Journal of Zhejiang University Science A",
volume="-1",
number="-1",
pages="",
year="1998",
publisher="Zhejiang University Press & Springer",
doi="10.1631/jzus.A2400345"
}
%0 Journal Article
%T Dynamic response of the ground beneath a high-speed railway based on typical upper Shanghai clays involving water table change
%A Jing HU1
%A Chengming YE1
%A Juntao JIANG1
%A Shujing WU1
%A David THOMPSON2
%A Xuecheng BIAN3
%J Journal of Zhejiang University SCIENCE A
%V -1
%N -1
%P
%@ 1673-565X
%D 1998
%I Zhejiang University Press & Springer
%DOI 10.1631/jzus.A2400345
TY - JOUR
T1 - Dynamic response of the ground beneath a high-speed railway based on typical upper Shanghai clays involving water table change
A1 - Jing HU1
A1 - Chengming YE1
A1 - Juntao JIANG1
A1 - Shujing WU1
A1 - David THOMPSON2
A1 - Xuecheng BIAN3
J0 - Journal of Zhejiang University Science A
VL - -1
IS - -1
SP -
EP -
%@ 1673-565X
Y1 - 1998
PB - Zhejiang University Press & Springer
ER -
DOI - 10.1631/jzus.A2400345
Abstract: A rising water table increases soil water content, reduces soil strength, and amplifies vibrations under identical train loads, thereby posing greater risks to train operations. To investigate this phenomenon, we used a 2.5D finite element model (FEM) of a coupled vehicle-embankment-ground system based on Biot's theory. The ground properties were derived from a typical soil profile of the Yangtze River basin, using geological data from Shanghai. The findings indicate that a rise in the water table leads to increased dynamic displacements of both the track and the ground. This amplification effect extends beyond the depth of the water table, impacting the entire embankment-foundation cross-section, and intensifies with higher train speeds. However, the water table rise has a limited impact on the critical speed of trains and dominant frequency contents. The dy-namic response of the embankment is more significantly affected by water table rises within the subgrade than by those within the ground. When the water table rises into the subgrade, significant excess pore pressure is generated inside the embankment, causing a substantial drop in effective stress. As a result, the stress path of the soil elements in the subgrade approaches the Mohr-Coulomb failure line, increasing the likelihood of soil failure.
Open peer comments: Debate/Discuss/Question/Opinion
<1>