Vacuum preloading test for high moisture content slurry using particle image velocimetry

被引：0

作者：

Pan X.-D. ^{[1
]}

Zhou L.-M. ^{[1
]}

Sun H.-L. ^{[1
]}

Cai Y.-Q. ^{[1
]}

Shi L. ^{[1
]}

Yuan Z.-H. ^{[1
]}

机构：

[1] Department of Architecture Engineering, Zhejiang University of Technology, Hangzhou

来源：

Zhejiang Daxue Xuebao (Gongxue Ban)/Journal of Zhejiang University (Engineering Science) | 2020年 / 54卷 / 06期

关键词：

Particle image velocimetry (PIV); Prefabricated vertical drains (PVDs); Soft clay with high moisture content; Vacuum preloading;

D O I：

10.3785/j.issn.1008-973X.2020.06.004

中图分类号：

学科分类号：

摘要：

The particle image velocimetry (PIV) technique was used to obtain the displacement field of dredged slurry with high water content utilizing prefabricated vertical drains (PVDs), in order to investigate the consolidation behavior of the soil around the drain under the vacuum pressure. As results, the soil near the PVD experienced horizontal displacement and the inward lateral displacement expanded to regions away from the PVD along with the vacuum preloading process. The soil near the PVD mainly underwent radial consolidation, and the vertical displacement of the soil away from the drain was bigger. The vertical displacement accumulated, forming a "soil pile" phenomenon in which the soil neighboring the PVD was convex. The measurement results from the pore pressure also show the difference in radial consolidation at diverse positions, and the soil which is located near the PVD consolidate faster. As for soil located 15 cm from the PVD, the degree of consolidation calculated by displacements is larger than the degree of consolidation calculated by pore pressure dissipation. © 2020, Zhejiang University Press. All right reserved.

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页码：1078 / 1085

页数：7

共 19 条

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