CLC number:
On-line Access: 2024-01-08
Received: 2023-10-03
Revision Accepted: 2023-12-26
Crosschecked: 0000-00-00
Cited: 0
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Yu SU, Yue ZHANG, Junyi DUAN, Jianglin GAO, Zhongzheng WANG, Da LIU, Bo HAN, Wenzhe ZHU. Investigation on the resilient modulus of soil mixture at various water contents and coarse grain contents under train moving loads[J]. Journal of Zhejiang University Science A,in press.Frontiers of Information Technology & Electronic Engineering,in press.https://doi.org/10.1631/jzus.A2300492
@article{title="Investigation on the resilient modulus of soil mixture at various water contents and coarse grain contents under train moving loads",
author="Yu SU, Yue ZHANG, Junyi DUAN, Jianglin GAO, Zhongzheng WANG, Da LIU, Bo HAN, Wenzhe ZHU",
journal="Journal of Zhejiang University Science A",
year="in press",
publisher="Zhejiang University Press & Springer",
doi="https://doi.org/10.1631/jzus.A2300492"
}
%0 Journal Article
%T Investigation on the resilient modulus of soil mixture at various water contents and coarse grain contents under train moving loads
%A Yu SU
%A Yue ZHANG
%A Junyi DUAN
%A Jianglin GAO
%A Zhongzheng WANG
%A Da LIU
%A Bo HAN
%A Wenzhe ZHU
%J Journal of Zhejiang University SCIENCE A
%P
%@ 1673-565X
%D in press
%I Zhejiang University Press & Springer
doi="https://doi.org/10.1631/jzus.A2300492"
TY - JOUR
T1 - Investigation on the resilient modulus of soil mixture at various water contents and coarse grain contents under train moving loads
A1 - Yu SU
A1 - Yue ZHANG
A1 - Junyi DUAN
A1 - Jianglin GAO
A1 - Zhongzheng WANG
A1 - Da LIU
A1 - Bo HAN
A1 - Wenzhe ZHU
J0 - Journal of Zhejiang University Science A
SP -
EP -
%@ 1673-565X
Y1 - in press
PB - Zhejiang University Press & Springer
ER -
doi="https://doi.org/10.1631/jzus.A2300492"
Abstract: Interlayer soil in railway substructures is characterized by a fine/coarse soil mixture. Considering that the resilient modulus Mr of the mixture is influenced by the microstructure of fine soil, it appears worthwhile to investigate this aspect further. In this work, the microstructure of fines was explored by mercury intrusion porosimetry, and its influence on the Mr of the mixture was studied by multi-stage dynamic triaxial tests with varying deviator stress amplitudes σd. The results showed a fine matrix fabric obtained at water contents of fine soil wf=17.6% and 13.7% (> the plastic limit of fine soil wp=12%), and a fine aggregate fabric identified at wf=10.6% (< wp=12%). Interestingly, the influences of wf and σd on the Mr of the mixture were observed: the rise in σd contributed to a decline in Mr when wf>wp but to an increase in Mr when wf<wp. It was concluded that, for the fine matrix fabric (wf>wp), increasing σd induced a reduction in Mr, while for the fine aggregate fabric (wf<wp), increasing σd gave rise to the growth of Mr. The distinct Mr–σd behaviors for these two fabrics were explained by the competing influences between soil hardening upon loading and soil rebounding upon unloading. For the fine matrix fabric (wf>wp), considering its high deformability, the rebounding effect on Mr outweighed the hardening effect, thus a decline in Mr occurred with the growth of σd. Conversely, for the fine aggregate fabric (wf<wp), the rebounding effect on Mr was secondary compared with the hardening effect based on the consideration of its low deformability, thus an increase in Mr was observed with rising σd.
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