CLC number: TU447
On-line Access: 2024-08-27
Received: 2023-10-17
Revision Accepted: 2024-05-08
Crosschecked: 2021-01-14
Cited: 0
Clicked: 3585
Hua-yang Lei, Yao Hu, Jing-jin Liu, Xu Liu, Chen-yuan Li. Consolidation behavior of Tianjin dredged clay using two air-booster vacuum preloading methods[J]. Journal of Zhejiang University Science A, 2021, 22(2): 147-164.
@article{title="Consolidation behavior of Tianjin dredged clay using two air-booster vacuum preloading methods",
author="Hua-yang Lei, Yao Hu, Jing-jin Liu, Xu Liu, Chen-yuan Li",
journal="Journal of Zhejiang University Science A",
volume="22",
number="2",
pages="147-164",
year="2021",
publisher="Zhejiang University Press & Springer",
doi="10.1631/jzus.A2000133"
}
%0 Journal Article
%T Consolidation behavior of Tianjin dredged clay using two air-booster vacuum preloading methods
%A Hua-yang Lei
%A Yao Hu
%A Jing-jin Liu
%A Xu Liu
%A Chen-yuan Li
%J Journal of Zhejiang University SCIENCE A
%V 22
%N 2
%P 147-164
%@ 1673-565X
%D 2021
%I Zhejiang University Press & Springer
%DOI 10.1631/jzus.A2000133
TY - JOUR
T1 - Consolidation behavior of Tianjin dredged clay using two air-booster vacuum preloading methods
A1 - Hua-yang Lei
A1 - Yao Hu
A1 - Jing-jin Liu
A1 - Xu Liu
A1 - Chen-yuan Li
J0 - Journal of Zhejiang University Science A
VL - 22
IS - 2
SP - 147
EP - 164
%@ 1673-565X
Y1 - 2021
PB - Zhejiang University Press & Springer
ER -
DOI - 10.1631/jzus.A2000133
Abstract: This paper presents model tests (macro aspect) and microstructure tests (micro aspect) for investigating the consolidation behavior of tianjin dredged clay using the prefabricated vertical drain air-booster vacuum preloading (PAVP) and tube air-booster vacuum preloading (TAVP) methods. The mechanism of air-booster vacuum preloading (AVP) using a spring-like system is explained. The main difference between these two methods is the air-boosting equipment. A new anticlogging air-booster prefabricated vertical drain (PVD) is used in the PAVP technique and a self-designed air-booster tube is used in the TAVP technique. In the model tests, a comparison of the variables that are monitored during reinforcement (vacuum pressure, surface settlement, water discharge, and pore-water pressure) and after reinforcement (water content, dry density, and vane shear strength) is conducted. The results indicate that the consolidation behavior of tianjin dredged clay using the PAVP method is better than that using the TAVP method. PAVP more efficiently mitigates the issue of water-draining PVD clogging and significantly accelerates drainage consolidation. In addition, in the microstructure tests, a comparison of the variables that are monitored after reinforcement (via scanning electron microscopy (SEM) and mercury intrusion porosimetry (MIP)) is conducted, and the results further explain the model test results.
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