CLC number: TU473.1
On-line Access: 2016-07-05
Received: 2016-03-11
Revision Accepted: 2016-06-08
Crosschecked: 2016-06-14
Cited: 0
Clicked: 4282
Citations: Bibtex RefMan EndNote GB/T7714
Yue-dong Wu, Hong-guo Diao, Jian Liu, Chui-chang Zeng. Field studies of a technique to mitigate ground settlement of operating highways[J]. Journal of Zhejiang University Science A, 2016, 17(7): 565-576.
@article{title="Field studies of a technique to mitigate ground settlement of operating highways",
author="Yue-dong Wu, Hong-guo Diao, Jian Liu, Chui-chang Zeng",
journal="Journal of Zhejiang University Science A",
volume="17",
number="7",
pages="565-576",
year="2016",
publisher="Zhejiang University Press & Springer",
doi="10.1631/jzus.A1600231"
}
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%J Journal of Zhejiang University SCIENCE A
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%DOI 10.1631/jzus.A1600231
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T1 - Field studies of a technique to mitigate ground settlement of operating highways
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A1 - Hong-guo Diao
A1 - Jian Liu
A1 - Chui-chang Zeng
J0 - Journal of Zhejiang University Science A
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PB - Zhejiang University Press & Springer
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DOI - 10.1631/jzus.A1600231
Abstract: In the eastern coastal region of China, many operating highways built over soft ground are vulnerable to severe post-construction settlement. In this study, a technique using jet grouted piles is developed to mitigate post-construction settlement. The piles are installed by drilling boreholes throughout the embankment. The principal stages of the construction process are described, and two field tests in China, on the Lianyan and Linhai highways, are presented. The results revealed that ground heaves of up to 219 mm and 337 mm induced during a short construction period were able to mitigate the settlement of the embankment. The average settling rate was significantly reduced from 60 mm/y to 9 mm/y on the Lianyan highway. Lateral ground displacement on the Linhai highway increased with time during construction, but after construction showed a slight reduction associated with the dissipation of excess pore water pressure. An analytical method was adopted to describe the ground heave due to the jet grouted piles. The ground heave increased with grout pump pressure, but decreased as the embankment load and distance from the pile center increased.
The authors present a very interesting and detailed study of an interesting problem.
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